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Huang H, Zhou Z, Peng D, Chu J. Potential impacts of climate change on cephalopods in a highly productive region (Northwest Pacific): Habitat suitability and management. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 953:175794. [PMID: 39233075 DOI: 10.1016/j.scitotenv.2024.175794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 08/21/2024] [Accepted: 08/23/2024] [Indexed: 09/06/2024]
Abstract
Cephalopods occupy a mid-trophic level in marine ecosystems and are vital both ecologically and as fishery resources. However, under the pressure of climate change and fishing, the sustainability of cephalopod resources requires reasonable management. This study aims to study climate change and fishing impacts on the common economic cephalopod species habitats using species distribution models. We take the northwest Pacific Ocean region as an example, which stands out as a significant region for cephalopod production around the world. Results found that the habitats of cephalopods are moving to higher latitudes or deeper waters (Bohai Sea, mid-bottom Yellow Sea, and the Okinawa Trough waters) under climate change. Additionally, these regions are currently under lower fishing pressure, which suggests that species migration might mitigate the effects of warming and fishing. This study provides the large-scale assessment of the distribution range of cephalopods affected by climate change coping with fishing pressure in the northwest Pacific Ocean. By identifying climate refuges and key fishing grounds, we underscore the importance of this information for managing cephalopod resources in the context of climate adaptation and sustainable fishing practices.
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Affiliation(s)
- Huimin Huang
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Zhimin Zhou
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Daomin Peng
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; Institute for the Oceans and Fisheries, University of British Columbia, Vancouver V6T 1Z4, Canada.
| | - Jiansong Chu
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
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2
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Xing Q, Yu H, Wang H, Ito SI, Yu W. Mesoscale eddies exert inverse latitudinal effects on global industrial squid fisheries. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175211. [PMID: 39111423 DOI: 10.1016/j.scitotenv.2024.175211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 07/21/2024] [Accepted: 07/31/2024] [Indexed: 08/10/2024]
Abstract
Squid species, as a burgeoning global food source, has garnered significant concerns due to expanding fisheries and little regulation. Elucidating the dynamics of squid fisheries and their biophysical coupling mechanisms is crucial for predicting spatiotemporal variations in squid fisheries and their sustainable management. Mesoscale eddies are discrete rotating oceanographic features that dominate local environmental variations and have been shown to modulate top predators. However, given controls of both predators and environmental factors, it remains unknown how eddies impact mid-trophic level species such as squids. Using satellite-based global squid fishery datasets, we showed an inverse latitudinal pattern of eddy-induced squid fisheries, where fishing activities are aggregated in (repelled from) cyclonic (anticyclonic) eddy cores in tropical waters and anticyclonic (cyclonic) eddy cores in temperate waters, and this pattern can be significantly enhanced with increasing eddy amplitude. Regarding solely the satellite-based global squid fisheries, eddy-induced environmental variations may generate a trade-off between food intake and energy expenditure, causing these oceanic squids to prefer cool cyclonic eddies in hot but food-limited waters, and warm anticyclonic eddies in nutritious but heat-limited waters. Given that eddy activity is projected to continuously enhance under global warming, our finding of eddy-driven bottom-up control for squid fisheries highlights an increasingly important hotspot for squid stock predictions and ecosystem-based ocean management in a changing climate.
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Affiliation(s)
- Qinwang Xing
- College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai 201306, China; Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China.
| | - Haiqing Yu
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China.
| | - Hui Wang
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China; National Marine Environmental Forecasting Center, Beijing 100086, China.
| | - Shin-Ichi Ito
- Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan.
| | - Wei Yu
- College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai 201306, China.
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3
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Høiberg MA, Stadler K, Verones F. Disentangling marine plastic impacts in Life Cycle Assessment: Spatially explicit Characterization Factors for ecosystem quality. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 949:175019. [PMID: 39059661 DOI: 10.1016/j.scitotenv.2024.175019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 07/11/2024] [Accepted: 07/23/2024] [Indexed: 07/28/2024]
Abstract
Inputs of persistent plastic items to marine environments continue to pose a serious and long-term threat to marine fauna and ecosystem health, justifying further interventions on local and global scales. While Life Cycle Assessment (LCA) is frequently used for sustainability evaluations by industries and policymakers, plastic leakage to the environment and its subsequent impacts remains absent from the framework. Incorporating plastic pollution in the assessments requires development of both inventories and impact assessment methods. Here, we propose spatially explicit Characterization Factors (CF) for quantifying the impacts of plastic entanglement on marine megafauna (mammals, birds and reptiles) on a global scale. We utilize Lagrangian particle tracking and a Species Sensitivity Distribution (SSD) model along with species susceptibility records to estimate potential entanglement impacts stemming from lost plastic-based fishing gear. By simulating plastic losses from fishing hotspots within all Exclusive Economic Zones (EEZs) we provide country-specific impact estimates for use in LCA. The impacts were found to be similar across regions, although the median CF associated with Oceania was higher compared to Europe, Africa and Asia. Our findings underscore the presence of susceptible species across the world and the transboundary issue of plastic pollution. We discuss the application of the factors and identify areas of further refinement that can contribute towards a comprehensive assessment of macroplastic pollution in sustainability assessments. Degradation and beaching rates for different types of fishing gear remain a research gap, along with population-level effects on marine taxa beyond surface breathing megafauna. Increasing the coverage of impacts specific to the marine realm in LCA alongside other stressors can facilitate informed decision-making towards more sustainable marine resource management.
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Affiliation(s)
- Marthe A Høiberg
- Industrial Ecology Programme, Norwegian University of Science and Technology, Trondheim, Norway.
| | - Konstantin Stadler
- Industrial Ecology Programme, Norwegian University of Science and Technology, Trondheim, Norway
| | - Francesca Verones
- Industrial Ecology Programme, Norwegian University of Science and Technology, Trondheim, Norway
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4
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Savoca MS, Kumar M, Sylvester Z, Czapanskiy MF, Meyer B, Goldbogen JA, Brooks CM. Whale recovery and the emerging human-wildlife conflict over Antarctic krill. Nat Commun 2024; 15:7708. [PMID: 39256348 PMCID: PMC11387826 DOI: 10.1038/s41467-024-51954-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 08/20/2024] [Indexed: 09/12/2024] Open
Abstract
The Southern Ocean ecosystem has undergone extensive changes in the past two centuries driven by industrial sealing and whaling, climate change and commercial fishing. However, following the end of commercial whaling, some populations of whales in this region are recovering. Baleen whales are reliant on Antarctic krill, which is also the largest Southern Ocean fishery. Since 1993, krill catch has increased fourfold, buoyed by nutritional supplement and aquaculture industries. In this Perspective, we approximate baleen whale consumption of Antarctic krill before and after whaling to examine if the ecosystem can support both humans and whales as krill predators. Our back-of-the-envelope calculations suggest that current krill biomass cannot support both an expanding krill fishery and the recovery of whale populations to pre-whaling sizes, highlighting an emerging human-wildlife conflict. We then provide recommendations for enhancing sustainability in this region by reducing encounters with whales and bolstering the krill population.
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Affiliation(s)
- Matthew S Savoca
- Department of Oceans, Hopkins Marine Station, Stanford University, Pacific Grove, CA, USA.
| | - Mehr Kumar
- Department of Oceans, Hopkins Marine Station, Stanford University, Pacific Grove, CA, USA
| | - Zephyr Sylvester
- Department of Environmental Studies, University of Colorado, Boulder, Boulder, CO, USA
| | - Max F Czapanskiy
- Department of Oceans, Hopkins Marine Station, Stanford University, Pacific Grove, CA, USA
- Institute of Marine Sciences, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - Bettina Meyer
- Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
- Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky University of Oldenburg, Oldenburg, Germany
- Helmholtz Institute for Functional Marine Biodiversity (HIFMB), University of Oldenburg, Oldenburg, Germany
| | - Jeremy A Goldbogen
- Department of Oceans, Hopkins Marine Station, Stanford University, Pacific Grove, CA, USA
| | - Cassandra M Brooks
- Department of Environmental Studies, University of Colorado, Boulder, Boulder, CO, USA
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5
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Jackson J, Arlidge WNS, Oyanedel R, Davis KJ. The global extent and severity of operational interactions between conflicting pinnipeds and fisheries. Nat Commun 2024; 15:7449. [PMID: 39198436 PMCID: PMC11358374 DOI: 10.1038/s41467-024-51298-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 08/02/2024] [Indexed: 09/01/2024] Open
Abstract
Recent population recovery of many pinniped species (seals, sea lions, walrus) is a conservation success. However, pinniped population recovery combined with increasing global fisheries operations is leading to increased conflicts between pinnipeds and fisheries. This human-wildlife conflict threatens pinniped conservation outcomes and may impose damaging impacts on fisheries, but the economic consequences and extent of these impacts are poorly understood. Here, we provide a global assessment of pinniped and fisheries operational interactions. We show that a third of reported fishing days have interactions with pinnipeds and 13.8% of catch is lost. Our results also reveal high heterogeneity between studies. Small-scale fisheries are three times more likely to interact with pinnipeds and lose four times as much catch as large-scale fisheries. Finally, we develop a spatial index that can predict where conflict is most likely to occur. Our findings reveal a substantial global issue requiring appropriate management as pinniped populations continue to recover.
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Affiliation(s)
- John Jackson
- Department of Biology, University of Oxford, 11a Mansfield Road, OX1 3SZ, Oxford, United Kingdom
- Department of Conservation Biology and Global Change, Estación Biológica de Doñana, 41092, Sevilla, Spain
| | - William N S Arlidge
- Department of Fish Biology, Fisheries and Aquaculture, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587, Berlin, Germany
| | - Rodrigo Oyanedel
- Instituto Milenio en Socio-Ecología Costera (SECOS), Av. Libertador Bernardo O'Higgins 340, Santiago, Región Metropolitana, Chile
- Centro de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL)- Universidad Austral de Chile, Edificio Emilio Pugin, piso 1 Campus Isla Teja, Valdivia, Región de los Ríos, Chile
| | - Katrina Joan Davis
- Department of Biology, University of Oxford, 11a Mansfield Road, OX1 3SZ, Oxford, United Kingdom.
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6
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Rodríguez JP, Klemm K, Duarte CM, Eguíluz VM. Shipping traffic through the Arctic Ocean: Spatial distribution, seasonal variation, and its dependence on the sea ice extent. iScience 2024; 27:110236. [PMID: 39015147 PMCID: PMC11250895 DOI: 10.1016/j.isci.2024.110236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 04/04/2024] [Accepted: 06/06/2024] [Indexed: 07/18/2024] Open
Abstract
The reduction in sea ice cover with Arctic warming facilitates shipping through remarkably shorter shipping routes. Automatic identification system (AIS) is a powerful data source to monitor Arctic Ocean shipping. Based on the AIS data from an online platform, we quantified the spatial distribution of shipping through this area, its intensity, and the seasonal variation. Shipping was heterogeneously distributed with power-law exponents that depended on the vessel category. We contextualized the estimated exponents with the analytical distribution of a transit model in one and two dimensions. Fishing vessels had the largest spatial spread, while narrower shipping routes associated with cargo and tanker vessels had a width correlated with the sea ice area. The time evolution of these routes showed extended periods of shipping activity through the year. We used AIS data to quantify recent Arctic shipping, which brings an opportunity for shorter routes, but likely impacting the Arctic ecosystem.
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Affiliation(s)
- Jorge P. Rodríguez
- Instituto de Física Interdisciplinar y Sistemas Complejos (IFISC), CSIC-UIB, Palma de Mallorca 07122, Spain
- CA UNED Illes Balears, Palma 07009, Spain
- Instituto Mediterráneo de Estudios Avanzados (IMEDEA), CSIC-UIB, Esporles 07190, Spain
| | - Konstantin Klemm
- Instituto de Física Interdisciplinar y Sistemas Complejos (IFISC), CSIC-UIB, Palma de Mallorca 07122, Spain
| | - Carlos M. Duarte
- Red Sea Research Center (RSRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955 204, Saudi Arabia
| | - Víctor M. Eguíluz
- Basque Centre for Climate Change (BC3), Leioa, 48940 País Vasco, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao, 48009 País Vasco, Spain
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7
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McDonald G, Bone J, Costello C, Englander G, Raynor J. Global expansion of marine protected areas and the redistribution of fishing effort. Proc Natl Acad Sci U S A 2024; 121:e2400592121. [PMID: 38980905 PMCID: PMC11260147 DOI: 10.1073/pnas.2400592121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 06/07/2024] [Indexed: 07/11/2024] Open
Abstract
The expansion of marine protected areas (MPAs) is a core focus of global conservation efforts, with the "30x30" initiative to protect 30% of the ocean by 2030 serving as a prominent example of this trend. We consider a series of proposed MPA network expansions of various sizes, and we forecast the impact this increase in protection would have on global patterns of fishing effort. We do so by building a predictive machine learning model trained on a global dataset of satellite-based fishing vessel monitoring data, current MPA locations, and spatiotemporal environmental, geographic, political, and economic features. We then use this model to predict future fishing effort under various MPA expansion scenarios compared to a business-as-usual counterfactual scenario that includes no new MPAs. The difference between these scenarios represents the predicted change in fishing effort associated with MPA expansion. We find that regardless of the MPA network objectives or size, fishing effort would decrease inside the MPAs, though by much less than 100%. Moreover, we find that the reduction in fishing effort inside MPAs does not simply redistribute outside-rather, fishing effort outside MPAs would also decline. The overall magnitude of the predicted decrease in global fishing effort principally depends on where networks are placed in relation to existing fishing effort. MPA expansion will lead to a global redistribution of fishing effort that should be accounted for in network design, implementation, and impact evaluation.
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Affiliation(s)
- Gavin McDonald
- Marine Science Institute, University of California, Santa Barbara, CA93106
- Bren School of Environmental Science and Management, University of California, Santa Barbara, CA93106
- Environmental Markets Lab, University of California, Santa Barbara, CA93106
| | - Jennifer Bone
- Marine Science Institute, University of California, Santa Barbara, CA93106
- Bren School of Environmental Science and Management, University of California, Santa Barbara, CA93106
- Environmental Markets Lab, University of California, Santa Barbara, CA93106
| | - Christopher Costello
- Marine Science Institute, University of California, Santa Barbara, CA93106
- Bren School of Environmental Science and Management, University of California, Santa Barbara, CA93106
- Environmental Markets Lab, University of California, Santa Barbara, CA93106
| | | | - Jennifer Raynor
- Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, Madison, WI53706
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8
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Wang W, Fan W, Wu Y, Zhang S, Zhou W, Fan X, Shi J, Jin W, Wang G, Yang S. Quantifying the spatial nonstationary response of environmental factors on purse seine tuna vessel fishing. Heliyon 2024; 10:e33298. [PMID: 39022052 PMCID: PMC11252980 DOI: 10.1016/j.heliyon.2024.e33298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 06/17/2024] [Accepted: 06/18/2024] [Indexed: 07/20/2024] Open
Abstract
To investigate the spatial and temporal patterns of environmental factors influencing the activity of purse seine tuna fishing vessels, data on fishing efforts of purse seine tuna fleets and environmental factors in the Western and Central Pacific Ocean (WCPO) from 2015 to 2020 were utilized to develop a geographically weighted regression (GWR) model. The results showed that fishing activity was primarily concentrated in the area between 140°E and 175°W, and between 10°S and 5°N. The GWR model showed excellent fitting performance and was suitable for correlation analysis. The environmental factors had a significant spatially heterogeneous effect on the fishing activity of purse seine tuna fishing vessels. The sea surface temperature, primary productivity at 200 m depth, and dissolved oxygen below the surface had the greatest spatially heterogeneous effect and are important environmental variables influencing the activity of purse seine tuna vessels in the WCPO. This study provides new methods for exploring the spatial distribution of fishing vessel activity to support science-based conservation and management.
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Affiliation(s)
- Wei Wang
- College of Information, Shanghai Ocean University, Shanghai, 201306, China
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resources, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Wei Fan
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resources, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Yumei Wu
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resources, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Shengmao Zhang
- Laoshan Laboratory, Qingdao, 266237, China
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resources, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Weifeng Zhou
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resources, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Xiumei Fan
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resources, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Jiashu Shi
- School of Navigation and Naval Architecture, Dalian Ocean University, Dalian, 116023, China
| | - Weiguo Jin
- Shanghai Kaichuang Deep Sea Fisheries Co., Ltd., Shanghai, 200131, China
| | - Guolai Wang
- Shanghai Kaichuang Deep Sea Fisheries Co., Ltd., Shanghai, 200131, China
| | - Shenglong Yang
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resources, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
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9
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Wang YH, Ruttenberg BI, Walter RK, Pendleton F, Samhouri JF, Liu OR, White C. High resolution assessment of commercial fisheries activity along the US West Coast using Vessel Monitoring System data with a case study using California groundfish fisheries. PLoS One 2024; 19:e0298868. [PMID: 38843128 PMCID: PMC11156284 DOI: 10.1371/journal.pone.0298868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 02/01/2024] [Indexed: 06/09/2024] Open
Abstract
Commercial fisheries along the US West Coast are important components of local and regional economies. They use various fishing gear, target a high diversity of species, and are highly spatially heterogeneous, making it challenging to generate a synoptic picture of fisheries activity in the region. Still, understanding the spatial and temporal dynamics of US West Coast fisheries is critical to meet the US legal mandate to manage fisheries sustainably and to better coordinate activities among a growing number of users of ocean space, including offshore renewable energy, aquaculture, shipping, and interactions with habitats and key non-fishery species such as seabirds and marine mammals. We analyzed vessel tracking data from Vessel Monitoring System (VMS) from 2010 to 2017 to generate high-resolution spatio-temporal estimates of contemporary fishing effort across a wide range of commercial fisheries along the entire US West Coast. We identified over 247,000 fishing trips across the entire VMS data, covering over 25 different fisheries. We validated the spatial accuracy of our analyses using independent estimates of spatial groundfish fisheries effort generated through the NOAA's National Marine Fisheries Service Observer Program. Additionally, for commercial groundfish fisheries operating in federal waters in California, we combined the VMS data with landings and ex-vessel value data from California commercial fisheries landings receipts to generate highly resolved estimates of landings and ex-vessel value, matching over 38,000 fish tickets with VMS data that included 87% of the landings and 76% of the ex-vessel value for groundfish. We highlight fisheries-specific and spatially-resolved patterns of effort, landings, and ex-vessel value, a bimodal distribution of fishing effort with respect to depth, and variable and generally declining effort over eight years. The information generated by our study can help inform future sustainable spatial fisheries management and other activities in the marine environment including offshore renewable energy planning.
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Affiliation(s)
- Yi-Hui Wang
- Center for Coastal Marine Sciences, California Polytechnic State University, San Luis Obispo, California, United States of America
| | - Benjamin I. Ruttenberg
- Center for Coastal Marine Sciences, California Polytechnic State University, San Luis Obispo, California, United States of America
- Biological Sciences Department, California Polytechnic State University, San Luis Obispo, California, United States of America
| | - Ryan K. Walter
- Center for Coastal Marine Sciences, California Polytechnic State University, San Luis Obispo, California, United States of America
- Physics Department, California Polytechnic State University, San Luis Obispo, California, United States of America
| | - Frank Pendleton
- Bureau of Ocean Energy Management, Camarillo, California, United States of America
| | - Jameal F. Samhouri
- National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northwest Fisheries Science Center, Seattle, Washington, United States of America
| | - Owen R. Liu
- National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northwest Fisheries Science Center, Seattle, Washington, United States of America
| | - Crow White
- Center for Coastal Marine Sciences, California Polytechnic State University, San Luis Obispo, California, United States of America
- Biological Sciences Department, California Polytechnic State University, San Luis Obispo, California, United States of America
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10
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Navarro-Herrero L, Saldanha S, Militão T, Vicente-Sastre D, March D, González-Solís J. Use of bird-borne radar to examine shearwater interactions with legal and illegal fisheries. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2024; 38:e14224. [PMID: 38111961 DOI: 10.1111/cobi.14224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 07/24/2023] [Accepted: 11/12/2023] [Indexed: 12/20/2023]
Abstract
Seabirds interact with fishing vessels to consume fishing discards and baits, sometimes resulting in incidental capture (bycatch) and the death of the bird, which has clear conservation implications. To understand seabird-fishery interactions at large spatiotemporal scales, researchers are increasing their use of simultaneous seabird and fishing vessel tracking. However, vessel tracking data can contain gaps due to technical problems, illicit manipulation, or lack of adoption of tracking monitoring systems. These gaps might lead to underestimating the fishing effort and bycatch rates and jeopardize the effectiveness of marine conservation. We deployed bird-borne radar detector tags capable of recording radar signals from vessels. We placed tags on 88 shearwaters (Calonectris diomedea, Calonectris borealis, and Calonectris edwardsii) that forage in the northwestern Mediterranean Sea and the Canary Current Large Marine Ecosystem. We modeled vessel radar detections registered by the tags in relation to gridded automatic identification system (AIS) vessel tracking data to examine the spatiotemporal dynamics of seabird-vessel interactions and identify unreported fishing activity areas. Our models showed a moderate fit (area under the curve >0.7) to vessel tracking data, indicating a strong association of shearwaters to fishing vessels in major fishing grounds. Although in high-marine-traffic regions, radar detections were also driven by nonfishing vessels. The tags registered the presence of potential unregulated and unreported fishing vessels in West African waters, where merchant shipping is unusual but fishing activity is intense. Overall, bird-borne radar detectors showed areas and periods when the association of seabirds with legal and illegal fishing vessels was high. Bird-borne radar detectors could improve the focus of conservation efforts.
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Grants
- 794938 European Union's Horizon 2020, Marie Skłodowska-Curie Actions
- PID2020-117155GB-I00/AEI/10.13039/501100011033 Ministerio de Ciencia e Innovación, Gobierno de España
- CGL2016-78530-R Ministerio de Economia y Competitividad, Gobierno de España
- BES-2017-079874 Ministerio de Economia y Competitividad, Gobierno de España
- 2021/058 CIDEGENT program of the Generalitat Valenciana (Spain)
- 4880 MAVA Foundation
- 20210/20113/20033 MAVA Foundation
- 2017/2349 PLEAMAR Fundación Biodiversidad, European Maritime and Fisheries Fund, European Maritime and Fisheries Fund, European Maritime and Fisheries Fund
- 2019/1423 PLEAMAR Fundación Biodiversidad, European Maritime and Fisheries Fund, European Maritime and Fisheries Fund, European Maritime and Fisheries Fund
- 2020FI_B100171(2019FI_B00829) Agència de Gestió d'Ajuts Universitaris i de Recerca, Generalitat de Catalunya (Spain)
- BDNS481561(2020FISDU463) Agència de Gestió d'Ajuts Universitaris i de Recerca, Generalitat de Catalunya (Spain)
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Affiliation(s)
- Leia Navarro-Herrero
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Universitat de Barcelona, Barcelona, Spain
- Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Barcelona, Spain
- Unitat de Zoologia Marina, Institut Cavanilles de Biodiversitat i Biologia Evolutiva, Universitat de València, Paterna, Spain
| | - Sarah Saldanha
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Universitat de Barcelona, Barcelona, Spain
- Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Barcelona, Spain
| | - Teresa Militão
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Universitat de Barcelona, Barcelona, Spain
- Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Barcelona, Spain
| | - Diego Vicente-Sastre
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Universitat de Barcelona, Barcelona, Spain
- Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Barcelona, Spain
| | - David March
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Universitat de Barcelona, Barcelona, Spain
- Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Barcelona, Spain
- Unitat de Zoologia Marina, Institut Cavanilles de Biodiversitat i Biologia Evolutiva, Universitat de València, Paterna, Spain
- Centre for Ecology and Conservation, College of Life & Environmental Sciences, University of Exeter, Penryn, UK
| | - Jacob González-Solís
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Universitat de Barcelona, Barcelona, Spain
- Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Barcelona, Spain
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11
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Perold V, Connan M, Suaria G, Weideman EA, Dilley BJ, Ryan PG. Regurgitated skua pellets containing the remains of South Atlantic seabirds can be used as biomonitors of small buoyant plastics at sea. MARINE POLLUTION BULLETIN 2024; 203:116400. [PMID: 38692002 DOI: 10.1016/j.marpolbul.2024.116400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 04/15/2024] [Accepted: 04/18/2024] [Indexed: 05/03/2024]
Abstract
Using seabirds as bioindicators of marine plastic pollution requires an understanding of how the plastic retained in each species compares with that found in their environment. We show that brown skua Catharacta antarctica regurgitated pellets can be used to characterise plastics in four seabird taxa breeding in the central South Atlantic, even though skua pellets might underrepresent the smallest plastic items in their prey. Fregetta storm petrels ingested more thread-like plastics and white-faced storm petrels Pelagodroma marina more industrial pellets than broad-billed prions Pachyptila vittata and great shearwaters Ardenna gravis. Ingested plastic composition (type, colour and polymer) was similar to floating plastics in the region sampled with a 200 μm net, but storm petrels were better indicators of the size of plastics than prions and shearwaters. Given this information, plastics in skua pellets containing the remains of seabirds can be used to track long-term changes in floating marine plastics.
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Affiliation(s)
- Vonica Perold
- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa.
| | - Maëlle Connan
- Department of Zoology, Marine Apex Predator Research Unit (MAPRU), Institute for Coastal and Marine Research, Nelson Mandela University, Gqeberha, South Africa
| | - Giuseppe Suaria
- CNR-ISMAR (Institute of Marine Sciences - National Research Council), Lerici 19032, La Spezia, Italy
| | - Eleanor A Weideman
- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa
| | - Ben J Dilley
- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa
| | - Peter G Ryan
- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa
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12
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Oremus KL, Rising J, Ramesh N, Ostroski AJ. Geolocated fish spawning habitats. Sci Data 2024; 11:521. [PMID: 38778024 PMCID: PMC11111787 DOI: 10.1038/s41597-024-03348-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 05/07/2024] [Indexed: 05/25/2024] Open
Abstract
Fish spawning locations are a crucial input into fisheries management and conservation plans, and many stocks are especially sensitive to the environmental conditions within these localized zones. Globally collated data on spawning locations across many species has been unavailable, hindering global stock assessments and analyses of sustainable development and global environmental change. To address this, we created a geocoded fish spawning dataset using qualitative spawning information from FishBase and Science and Conservation of Fish Aggregations (SCRFA). We cleaned and geocoded the spawning locations of 1,045 marine fish species into 2,931 regions. Each spawning region is defined by one or more polygons, and most spawning regions are associated with spawning months. The resulting dataset covers oceans globally. This dataset will be useful to scientists studying marine fish population dynamics and their interactions with the physical environment on regional to large scales.
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Affiliation(s)
- Kimberly L Oremus
- University of Delaware, School of Marine Science and Policy, Newark, DE, 19716, USA.
| | - James Rising
- University of Delaware, School of Marine Science and Policy, Newark, DE, 19716, USA
| | - Nandini Ramesh
- Commonwealth Scientific and Industrial Research Organisation, Natural Systems Modelling Group, Data61, Eveleigh, NSW, 2015, Australia
| | - Audrey J Ostroski
- University of Delaware, School of Marine Science and Policy, Newark, DE, 19716, USA
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13
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Jacquemont J, Loiseau C, Tornabene L, Claudet J. 3D ocean assessments reveal that fisheries reach deep but marine protection remains shallow. Nat Commun 2024; 15:4027. [PMID: 38773096 PMCID: PMC11109251 DOI: 10.1038/s41467-024-47975-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 04/17/2024] [Indexed: 05/23/2024] Open
Abstract
The wave of new global conservation targets, the conclusion of the High Seas Treaty negotiations, and the expansion of extractive use into the deep sea call for a paradigm shift in ocean conservation. The current reductionist 2D representation of the ocean to set targets and measure impacts will fail at achieving effective biodiversity conservation. Here, we develop a framework that overlays depth realms onto marine ecoregions to conduct the first three-dimensional spatial analysis of global marine conservation achievements and fisheries footprint. Our novel approach reveals conservation gaps of mesophotic, rariphotic, and abyssal depths and an underrepresentation of high protection levels across all depths. In contrast, the 3D footprint of fisheries covers all depths, with benthic fishing occurring down to the lower bathyal and mesopelagic fishing peaking in areas overlying abyssal depths. Additionally, conservation efforts are biased towards areas where the lowest fishing pressures occur, compromising the effectiveness of the marine conservation network. These spatial mismatches emphasize the need to shift towards 3D thinking to achieve ocean sustainability.
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Affiliation(s)
- Juliette Jacquemont
- School of Aquatic and Fishery Sciences, University of Washington, 1122 NE Boat St, Seattle, WA, USA.
- National Center for Scientific Research, PSL Université Paris, CRIOBE, CNRS-EPHE-UPVD, Maison de l'Océan, 195 rue Saint-Jacques, Paris, France.
| | - Charles Loiseau
- National Center for Scientific Research, PSL Université Paris, CRIOBE, CNRS-EPHE-UPVD, Maison de l'Océan, 195 rue Saint-Jacques, Paris, France
| | - Luke Tornabene
- School of Aquatic and Fishery Sciences, University of Washington, 1122 NE Boat St, Seattle, WA, USA
| | - Joachim Claudet
- National Center for Scientific Research, PSL Université Paris, CRIOBE, CNRS-EPHE-UPVD, Maison de l'Océan, 195 rue Saint-Jacques, Paris, France.
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14
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Clairbaux M, Rönkä M, Anker-Nilssen T, Artukhin Y, Danielsen J, Gavrilo M, Gilchrist G, Hansen ES, Hedd A, Kaler R, Kuletz K, Olsen B, Mallory ML, Merkel FR, Strøm H, Fort J, Grémillet D. An ecologically sound and participatory monitoring network for pan-Arctic seabirds. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2024:e14287. [PMID: 38745504 DOI: 10.1111/cobi.14287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 01/23/2024] [Accepted: 02/18/2024] [Indexed: 05/16/2024]
Abstract
In a warming Arctic, circumpolar long-term monitoring programs are key to advancing ecological knowledge and informing environmental policies. Calls for better involvement of Arctic peoples in all stages of the monitoring process are widespread, although such transformation of Arctic science is still in its infancy. Seabirds stand out as ecological sentinels of environmental changes, and priority has been given to implement the Circumpolar Seabird Monitoring Plan (CSMP). We assessed the representativeness of a pan-Arctic seabird monitoring network focused on the black-legged kittiwake (Rissa tridactyla) by comparing the distribution of environmental variables for all known versus monitored colonies. We found that with respect to its spatiotemporal coverage, this monitoring network does not fully embrace current and future environmental gradients. To improve the current scheme, we designed a method to identify colonies whose inclusion in the monitoring network will improve its ecological representativeness, limit logistical constraints, and improve involvement of Arctic peoples. We thereby highlight that inclusion of study sites in the Bering Sea, Siberia, western Russia, northern Norway, and southeastern Greenland could improve the current monitoring network and that their proximity to local populations might allow increased involvement of local communities. Our framework can be applied to improve existing monitoring networks in other ecoregions and sociological contexts.
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Affiliation(s)
- Manon Clairbaux
- School of Biological, Environmental and Earth Sciences, University College Cork, Cork, Ireland
- MaREI Centre for Energy, Climate and Marine, Environmental Research Institute, University College Cork, Cork, Ireland
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Mia Rönkä
- Biodiversity Unit, University of Turku, Turku, Finland
| | | | - Yuri Artukhin
- Kamchatka Branch of the Pacific Geographical Institute, Far-Eastern Branch of the Russian Academy of Sciences, Petropavlovsk-Kamchatsky, Russia
| | | | - Maria Gavrilo
- Association Maritime Heritage, Saint Petersburg, Russia
- Arctic and Antarctic Research Institute, Saint-Petersburg, Russia
| | - Grant Gilchrist
- National Wildlife Research Centre, Environment and Climate Change Canada, Ottawa, Ontario, Canada
| | | | - April Hedd
- Wildlife Research Division, Science & Technology Branch, Environment and Climate Change Canada, Mount Pearl, Newfoundland and Labrador, Canada
| | - Robert Kaler
- U.S. Fish and Wildlife Service, Anchorage, Alaska, USA
| | - Kathy Kuletz
- U.S. Fish and Wildlife Service, Anchorage, Alaska, USA
| | - Bergur Olsen
- Faroe Marine Research Institute, Tórshavn, Faroe Islands
| | - Mark L Mallory
- Department of Biology, Acadia University, Wolfville, Nova Scotia, Canada
| | - Flemming Ravn Merkel
- Department of Ecoscience, Aarhus University, Roskilde, Denmark
- Greenland Institute of Natural Resources, Nuuk, Greenland
| | | | - Jérôme Fort
- Littoral, Environnement et Sociétés (LIENSs), UMR7266 CNRS - La Rochelle Université, La Rochelle, France
| | - David Grémillet
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
- FitzPatrick Institute of African Ornithology, Department of Biological Sciences, University of Cape Town, Rondebosch, South Africa
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15
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Wan L, Cheng T, Fan W, Shi Y, Zhang H, Zhang S, Yu L, Dai Y, Yang S. Spatial information extraction of fishing grounds for light purse seine vessels in the Northwest Pacific Ocean based on AIS data. Heliyon 2024; 10:e28953. [PMID: 38596129 PMCID: PMC11002659 DOI: 10.1016/j.heliyon.2024.e28953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 03/19/2024] [Accepted: 03/27/2024] [Indexed: 04/11/2024] Open
Abstract
Ecological fishery management requires high-precision fishery information to support resource management and marine spatial planning. In this paper, the Automatic Identification System (AIS) was adopted to extract the spatial information on the fishing grounds of light purse seine vessels in the Northwest Pacific Ocean. The spatial distributions of fishing grounds mapped by the data mining, kernel density analysis and hotspot analysis methods were compared. The spatial similarity index was applied to determine the spatial consistency between the computed spatial information and fisheries resource information. Finally, the spatial information derived by the best method was used to investigate the characteristics of fishing activity. The results showed that: the speed of light purse seine vessels related to operations was lower than 1.6 knots. The spatial information extracted by the three methods was consistent with the catch data distribution, and the spatial similarity between the fishing effort and catch data was the highest. The spatial variation in fishing activity was similar to that in the chub mackerel migration route. AIS data could be used to provide high-resolution fishery information. Light purse seine fishing vessels typically operate and travel along the exclusive economic zone boundary, and increased attention must be given to fishing vessel operation supervision. A comprehensive supervision system can be employed to monitor the operations of fishing vessels more effectively. The results of this study can provide technical support for the management of fishing activities and conservation of marine resources in this region using AIS data.
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Affiliation(s)
- Lijun Wan
- School of Navigation and Naval Architecture, Dalian Ocean University, Dalian, 116023, China
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Tianfei Cheng
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resource, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Wei Fan
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resource, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Yongchuang Shi
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resource, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Heng Zhang
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resource, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Shengmao Zhang
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resource, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Laoshan Laboratory, Qingdao, 266237, China
| | - Linlin Yu
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- College of Information, Shanghai Ocean University, Shanghai, 201306, China
| | - Yang Dai
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resource, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Laoshan Laboratory, Qingdao, 266237, China
| | - Shenglong Yang
- Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
- Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resource, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
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16
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Chinacalle-Martínez N, Hearn AR, Boerder K, Murillo Posada JC, López-Macías J, Peñaherrera-Palma CR. Fishing effort dynamics around the Galápagos Marine Reserve as depicted by AIS data. PLoS One 2024; 19:e0282374. [PMID: 38568901 PMCID: PMC10990170 DOI: 10.1371/journal.pone.0282374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 03/05/2024] [Indexed: 04/05/2024] Open
Abstract
The waters around the Galápagos Marine Reserve (GMR) are important fishing grounds for authorized artisanal vessels fishing within the reserve as well as for national and foreign industrial fleets operating in the wider Ecuadorian Insular Exclusive Economic Zone (IEEZ). Although it was not originally designed for fisheries management, Automatic Identification System (AIS) data provides useful, open access, near real-time and high-resolution information that allows for increased monitoring, particularly around Marine Protected Areas (MPAs) and in Areas Beyond National Jurisdiction. This study uses AIS data provided by Global Fishing Watch to assess the spatial distribution and seasonal dynamics of fishing effort by vessel flag within the GMR and the IEEZ from 2012 to 2021. Based on kernel density estimation analysis, we determinate the core-use areas (50%) and spatial extent (95%) of fishing activities by fleets (Ecuadorian and foreign), gear types and seasons (warm, from December to May; and cold, from June to November). Our results show that the Ecuadorian fleet recorded the most observed fishing hours in the study area, with 32,829 hours in the IEEZ and 20,816 hours within the GMR. The foreign flags with the most observed fishing hours in the IEEZ were Panama (3,245 hours) and Nicaragua (2,468.5 hours), while in the GMR were the 'Unknown flag' (4,991.4 hours) and Panama (133.7 hours). Vessels fished employing different fishing gears, but the waters of the GMR and IEEZ were mostly targeted by tuna purse-seiners and drifting longlines. The spatial distribution of the fishing effort exhibits marked seasonal variability, likely influenced by seasonal migrations of target species such as tunas (e.g., Thunnus albacares, T. obesus and Katsuwonus pelamis), marlins (e.g., Makaira nigricans) and sharks (e.g., Alopias pelagicus). The collection and use of this type of spatial and seasonal information is an essential step to understand the dynamics of fishing activities in national waters and improve fisheries management, particularly in less studied areas and fisheries.
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Affiliation(s)
- Nicole Chinacalle-Martínez
- Pontificia Universidad Católica del Ecuador–Sede Manabí, Manabí, Ecuador
- MigraMar, Bodega Bay, California, United States of America
| | - Alex R. Hearn
- MigraMar, Bodega Bay, California, United States of America
- Universidad San Francisco de Quito, Quito, Ecuador
| | | | | | - Jean López-Macías
- MigraMar, Bodega Bay, California, United States of America
- Centro Interdisciplinario de Ciencias Marinas, Avenida Instituto Politécnico Nacional, La Paz, Baja California Sur, México
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17
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de Oliveira YCBB, Nazareth Rivera D, Carramaschi de Alagão Querido L, da Silva Mourão J. Critical areas for sea turtles in Northeast Brazil: a participatory approach for a data-poor context. PeerJ 2024; 12:e17109. [PMID: 38549781 PMCID: PMC10977088 DOI: 10.7717/peerj.17109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 02/23/2024] [Indexed: 04/02/2024] Open
Abstract
Fishing is one of the main threats to sea turtles due to the risk of entanglement in lost nets, vessel collision and mortality due to incidental catches. In Brazil, most of the studies regarding fishing interactions with sea turtles are focused on pelagic longline fisheries in the South and Southeast regions. However, their main reproductive areas in Southwest Atlantic RMU occur in Northeast Brazil, which overlaps small-scale coastal gillnet fisheries. Here, we aimed to use ethnobiology and participatory approaches as simple and cost-effective methods to identify areas for sea turtle conservation where impacts from small-scale fisheries are most likely. Expert captains were trained to recording sea turtle sightings during navigations from the landing port to the fishing grounds, informing their folk nomenclatures. By interpolation of environmental data (chlorophyll and bathymetry) and ecological data, we predicted habitats of 3,459.96 km² for Caretta caretta, Chelonia mydas, and Eretmochelys imbricata and fishing zones of 1,087 km² for management in 20 m and 50 m depths. Our results contributes to ongoing discussions of bycatch mitigation for sea turtle species and identification of habitats. We highlights the importance of considering particularities of overlapped areas in marine spatial planning and co-management arrangements.
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Affiliation(s)
| | - Douglas Nazareth Rivera
- Programa de Pós-Graduação em Conservação da Fauna, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil
| | | | - José da Silva Mourão
- Departamento de Biologia, Universidade Estadual da Paraíba, Campina Grande, Paraiba, Brazil
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18
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Georges V, Vaz S, Carbonara P, Fabri MC, Fanelli E, Follesa MC, Garofalo G, Gerovasileiou V, Jadaud A, Maiorano P, Marin P, Mytilineou C, Orejas C, Del Mar Otero M, Smith CJ, Thasitis I, Lauria V. Mapping the habitat refugia of Isidella elongata under climate change and trawling impacts to preserve Vulnerable Marine Ecosystems in the Mediterranean. Sci Rep 2024; 14:6246. [PMID: 38485718 PMCID: PMC10940633 DOI: 10.1038/s41598-024-56338-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 03/05/2024] [Indexed: 03/17/2024] Open
Abstract
The bamboo-coral Isidella elongata is a key habitat-forming species in the deep Mediterranean Sea. This alcyonacean is listed as an indicator of Vulnerable Marine Ecosystems (VMEs) and as Critically Endangered due to bottom trawling impacts. In this work, a modeling approach was used to predict and map the habitat suitability of I. elongata in the Mediterranean Sea under current environmental conditions. Occurrence data were modeled as a function of environmental parameters. Using climate change scenarios and fishing effort data, the risk of climate change and fisheries impacts on habitat suitability were estimated, and climate refugia were identified. A drastic loss of habitat is predicted, and climate change scenarios suggest a loss of 60% of suitable habitats by 2100. In the central Mediterranean, climate refugia overlapped with active fishing grounds. This study represents the first attempt to identify hot spots for the protection of soft bottom Vulnerable Marine Ecosystems for the entire Mediterranean Sea, and highlights areas most at risk from trawling. This work is relevant to the objectives of the EU Marine Strategy Framework and Maritime Spatial Planning Directives, the Biodiversity Strategy for 2030 regarding priority areas for conservation.
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Affiliation(s)
- Vincent Georges
- Institute for Biological Resources and Marine Biotechnologies, CNR IRBIM, Mazara del Vallo, Italy.
- MARBEC, Univ Montpellier, CNRS, Sète, Ifremer, IRD, France.
| | - Sandrine Vaz
- MARBEC, Univ Montpellier, CNRS, Sète, Ifremer, IRD, France
| | | | - Marie-Claire Fabri
- Ifremer, Centre de Méditerranée, Département Océanographie Et Dynamique Des Ecosystèmes, 83500, La Seyne Sur Mer, France
| | - Emanuela Fanelli
- Department of Life and Environmental Sciences - DiSVA, Università Politecnica Delle Marche, Ancona, Italy
| | | | - Germana Garofalo
- Institute for Biological Resources and Marine Biotechnologies, CNR IRBIM, Mazara del Vallo, Italy
- Institute for Environmental Protection and Research (ISPRA), BIO-CIT, Lungomare Cristoforo Colombo N. 4521 (Ex Complesso Roosevelt) Località Addaura, 90149, Palermo, Italy
- National Biodiversity Future Center, NBFC, Palermo, Italy
| | - Vasilis Gerovasileiou
- Department of Environment, Faculty of Environment, Ionian University, 29100, Zakynthos, Greece
- Institute of Marine Biological Resources and Inland Waters, Hellenic Centre for Marine Research, Gournes, Greece
| | | | - Porzia Maiorano
- Department of Bioscience, Biotechnology and Environnement (DBBA), University of Bari Aldo Moro, Bari, Italy
| | | | - Chryssi Mytilineou
- Institute of Marine Biological Resources and Inland Waters, Hellenic Centre for Marine Research, Gournes, Greece
| | - Covadonga Orejas
- Instituto Español de Oceanografia, IEO, Centro Oceanográfico de Gijón, Gijón, Spain
| | | | - Chris J Smith
- Institute of Marine Biological Resources and Inland Waters, Hellenic Centre for Marine Research, Gournes, Greece
| | - Ioannis Thasitis
- Department of Fisheries and Marine Research, Ministry of Agriculture, Rural Development and Environment, 101 Vithleem Street, 2033, Nicosia, Cyprus
| | - Valentina Lauria
- Institute for Biological Resources and Marine Biotechnologies, CNR IRBIM, Mazara del Vallo, Italy
- Institute for Environmental Protection and Research (ISPRA), BIO-CIT, Lungomare Cristoforo Colombo N. 4521 (Ex Complesso Roosevelt) Località Addaura, 90149, Palermo, Italy
- National Biodiversity Future Center, NBFC, Palermo, Italy
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19
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Welch H, Clavelle T, White TD, Cimino MA, Kroodsma D, Hazen EL. Unseen overlap between fishing vessels and top predators in the northeast Pacific. SCIENCE ADVANCES 2024; 10:eadl5528. [PMID: 38446890 PMCID: PMC10917345 DOI: 10.1126/sciadv.adl5528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/30/2024] [Indexed: 03/08/2024]
Abstract
Accurate assessments of human-wildlife risk associated with industrial fishing are critical for the conservation of marine top predators. Automatic Identification System (AIS) data provide a means of mapping fishing and estimating human-wildlife risk; however, risk can be obscured by gaps in the AIS record due to technical issues and intentional disabling. We assessed the extent to which unseen fishing vessel activity due to AIS gaps obscured estimates of overlap between fishing vessel activity and 14 marine predators including sharks, tunas, mammals, seabirds, and critically endangered leatherback turtles. Among vessels equipped with AIS in the northeast Pacific, up to 24% of total predator overlap with fishing vessel activity was unseen, and up to 36% was unseen for some individual species. Waters near 10°N had high unseen overlap with sharks yet low reported shark catch, revealing potential discrepancies in self-reported datasets. Accounting for unseen fishing vessel activity illuminates hidden human-wildlife risk, demonstrating challenges and solutions for transparent and sustainable marine fisheries.
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Affiliation(s)
- Heather Welch
- Institute of Marine Science, University of California, Santa Cruz, Santa Cruz, CA, USA
- Environmental Research Division, Southwest Fisheries Science Center, Monterey, CA, USA
| | | | | | - Megan A. Cimino
- Institute of Marine Science, University of California, Santa Cruz, Santa Cruz, CA, USA
- Environmental Research Division, Southwest Fisheries Science Center, Monterey, CA, USA
| | | | - Elliott L. Hazen
- Institute of Marine Science, University of California, Santa Cruz, Santa Cruz, CA, USA
- Environmental Research Division, Southwest Fisheries Science Center, Monterey, CA, USA
- Hopkins Marine Station, Stanford University, Pacific Grove, CA, USA
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20
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Letessier TB, Mouillot D, Mannocci L, Jabour Christ H, Elamin EM, Elamin SM, Friedlander AM, Hearn A, Juhel JB, Kleiven AR, Moland E, Mouquet N, Nillos-Kleiven PJ, Sala E, Thompson CDH, Velez L, Vigliola L, Meeuwig JJ. Divergent responses of pelagic and benthic fish body-size structure to remoteness and protection from humans. Science 2024; 383:976-982. [PMID: 38422147 DOI: 10.1126/science.adi7562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 01/24/2024] [Indexed: 03/02/2024]
Abstract
Animal body-size variation influences multiple processes in marine ecosystems, but habitat heterogeneity has prevented a comprehensive assessment of size across pelagic (midwater) and benthic (seabed) systems along anthropic gradients. In this work, we derive fish size indicators from 17,411 stereo baited-video deployments to test for differences between pelagic and benthic responses to remoteness from human pressures and effectiveness of marine protected areas (MPAs). From records of 823,849 individual fish, we report divergent responses between systems, with pelagic size structure more profoundly eroded near human markets than benthic size structure, signifying greater vulnerability of pelagic systems to human pressure. Effective protection of benthic size structure can be achieved through MPAs placed near markets, thereby contributing to benthic habitat restoration and the recovery of associated fishes. By contrast, recovery of the world's largest and most endangered fishes in pelagic systems requires the creation of highly protected areas in remote locations, including on the High Seas, where protection efforts lag.
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Affiliation(s)
- Tom B Letessier
- CESAB - FRB, Montpellier, France
- Institute of Zoology, Zoological Society of London, Regent's Park, London, UK
- Marine Futures Lab, School of Biological Sciences, University of Western Australia, Perth, WA, Australia
| | - David Mouillot
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Laura Mannocci
- CESAB - FRB, Montpellier, France
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Hanna Jabour Christ
- Marine Futures Lab, School of Biological Sciences, University of Western Australia, Perth, WA, Australia
| | | | - Sheikheldin Mohamed Elamin
- Faculty of Marine Science and Fisheries, Red Sea State University, P.O. Box 24, Port Sudan, Red Sea State, Sudan
| | - Alan M Friedlander
- National Geographic Society, Washington, DC 20036, USA
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kāne'ohe, Hawai'i, USA
| | - Alex Hearn
- Galapagos Science Center, Universidad San Francisco de Quito, Quito, Ecuador
- MigraMar, Olema, CA, USA
| | - Jean-Baptiste Juhel
- ENTROPIE, Institut de Recherche pour le Développement, IRD-UR-UNC-IFREMER-CNRS, Centre IRD de Nouméa, Nouméa Cedex, New-Caledonia, France
| | - Alf Ring Kleiven
- Institute of Marine Research, Nye Flødevigveien 20, 4817 His, Norway
| | - Even Moland
- Institute of Marine Research, Nye Flødevigveien 20, 4817 His, Norway
- Centre for Coastal Research (CCR), Department of Natural Sciences, University of Agder, P.O. Box 422, N-4604 Kristiansand, Norway
| | - Nicolas Mouquet
- CESAB - FRB, Montpellier, France
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | | | - Enric Sala
- National Geographic Society, Washington, DC 20036, USA
| | - Christopher D H Thompson
- Marine Futures Lab, School of Biological Sciences, University of Western Australia, Perth, WA, Australia
| | - Laure Velez
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Laurent Vigliola
- ENTROPIE, Institut de Recherche pour le Développement, IRD-UR-UNC-IFREMER-CNRS, Centre IRD de Nouméa, Nouméa Cedex, New-Caledonia, France
| | - Jessica J Meeuwig
- Marine Futures Lab, School of Biological Sciences, University of Western Australia, Perth, WA, Australia
- Oceans Institute, University of Western Australia, Perth, WA, Australia
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21
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Riekkola L, Liu OR, Ward EJ, Holland DS, Feist BE, Samhouri JF. Modeling the spatiotemporal patterns and drivers of Dungeness crab fishing effort to inform whale entanglement risk mitigation on the U.S. West Coast. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119735. [PMID: 38113786 DOI: 10.1016/j.jenvman.2023.119735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/17/2023] [Accepted: 11/26/2023] [Indexed: 12/21/2023]
Abstract
Understanding and characterizing the spatiotemporal dynamics of fishing fleets is crucial for ecosystem-based fisheries management (EBFM). EBFM must not only account for the sustainability of target species catches, but also for the collateral impacts of fishing operations on habitats and non-target species. Increased rates of large whale entanglements in commercial Dungeness crab fishing gear have made reducing whale-fishery interactions a current and pressing challenge on the U.S. West Coast. While several habitat models exist for different large whale species along the West Coast, less is known about the crab fishery and the degree to which different factors influence the intensity and distribution of aggregate fishing effort. Here, we modeled the spatiotemporal patterns of Dungeness crab fishing effort in Oregon and Washington as a function of environmental, economic, temporal, social, and management related predictor variables using generalized linear mixed effects models. We then assessed the predictive performance of such models and discussed their usefulness in informing fishery management. Our models revealed low between-year variability and consistent spatial and temporal patterns in commercial Dungeness crab fishing effort. However, fishing effort was also responsive to multiple environmental, economic and management cues, which influenced the baseline effort distribution pattern. The best predictive model, chosen through out-of-sample cross-validation, showed moderate predictive performance and relied upon environmental, economic, and social covariates. Our results help fill the current knowledge gap around Dungeness crab fleet dynamics, and support growing calls to integrate fisheries behavioral data into fisheries management and marine spatial planning.
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Affiliation(s)
- Leena Riekkola
- NRC Research Associateship Program, Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA, 98112, USA.
| | - Owen R Liu
- NRC Research Associateship Program, Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA, 98112, USA; Ocean Associates, Inc., Under Contract to the Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 2725 Montlake Blvd. E., Seattle, WA, 98112, USA
| | - Eric J Ward
- Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA, 98112, USA
| | - Daniel S Holland
- Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA, 98112, USA
| | - Blake E Feist
- Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA, 98112, USA
| | - Jameal F Samhouri
- Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA, 98112, USA.
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22
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Li J, Xing Q, Li X, Arif M, Li J. Monitoring Off-Shore Fishing in the Northern Indian Ocean Based on Satellite Automatic Identification System and Remote Sensing Data. SENSORS (BASEL, SWITZERLAND) 2024; 24:781. [PMID: 38339498 PMCID: PMC10857284 DOI: 10.3390/s24030781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024]
Abstract
Satellite-derived Sea Surface Temperature (SST) and sea-surface Chlorophyll a concentration (Chl-a), along with Automatic Identification System (AIS) data of fishing vessels, were used in the examination of the correlation between fishing operations and oceanographic factors within the northern Indian Ocean from March 2020 to February 2023. Frequency analysis and the empirical cumulative distribution function (ECDF) were used to calculate the optimum ranges of two oceanographic factors for fishing operations. The results revealed a substantial influence of the northeast and southwest monsoons significantly impacting fishing operations in the northern Indian Ocean, with extensive and active operations during the period from October to March and a notable reduction from April to September. Spatially, fishing vessels were mainly concentrated between 20° N and 6° S, extending from west of 90° E to the eastern coast of Africa. Observable seasonal variations in the distribution of fishing vessels were observed in the central and southeastern Arabian Sea, along with its adjacent high sea of the Indian Ocean. Concerning the marine environment, it was observed that during the northeast monsoon, the suitable SST contributed to high CPUEs in fishing operation areas. Fishing vessels were widely distributed in the areas with both mid-range and low-range Chl-a concentrations, with a small part distributed in high-concentration areas. Moreover, the monthly numbers of fishing vessels showed seasonal fluctuations between March 2020 and February 2023, displaying a periodic pattern with an overall increasing trend. The total number of fishing vessels decreased due to the impact of the COVID-19 pandemic in 2020, but this was followed by a gradual recovery in the subsequent two years. For fishing operations in the northern Indian Ocean, the optimum ranges for SST and Chl-a concentration were 27.96 to 29.47 °C and 0.03 to 1.81 mg/m3, respectively. The preliminary findings of this study revealed the spatial-temporal distribution characteristics of fishing vessels in the northern Indian Ocean and the suitable ranges of SST and Chl-a concentration for fishing operations. These results can serve as theoretical references for the production and resource management of off-shore fishing operations in the northern Indian Ocean.
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Affiliation(s)
- Jie Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; (J.L.); (X.L.); (J.L.)
- Shandong Key Laboratory of Coastal Environmental Processes, Yantai 264003, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qianguo Xing
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; (J.L.); (X.L.); (J.L.)
- Shandong Key Laboratory of Coastal Environmental Processes, Yantai 264003, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xuerong Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; (J.L.); (X.L.); (J.L.)
| | - Maham Arif
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; (J.L.); (X.L.); (J.L.)
- Shandong Key Laboratory of Coastal Environmental Processes, Yantai 264003, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinghu Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; (J.L.); (X.L.); (J.L.)
- Shandong Key Laboratory of Coastal Environmental Processes, Yantai 264003, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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23
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Worm B, Orofino S, Burns ES, D'Costa NG, Manir Feitosa L, Palomares MLD, Schiller L, Bradley D. Global shark fishing mortality still rising despite widespread regulatory change. Science 2024; 383:225-230. [PMID: 38207048 DOI: 10.1126/science.adf8984] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 11/02/2023] [Indexed: 01/13/2024]
Abstract
Over the past two decades, sharks have been increasingly recognized among the world's most threatened wildlife and hence have received heightened scientific and regulatory scrutiny. Yet, the effect of protective regulations on shark fishing mortality has not been evaluated at a global scale. Here we estimate that total fishing mortality increased from at least 76 to 80 million sharks between 2012 and 2019, ~25 million of which were threatened species. Mortality increased by 4% in coastal waters but decreased by 7% in pelagic fisheries, especially across the Atlantic and Western Pacific. By linking fishing mortality data to the global regulatory landscape, we show that widespread legislation designed to prevent shark finning did not reduce mortality but that regional shark fishing or retention bans had some success. These analyses, combined with expert interviews, highlight evidence-based solutions to reverse the continued overexploitation of sharks.
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Affiliation(s)
- Boris Worm
- Biology Department, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Sara Orofino
- Environmental Markets Lab, University of California, Santa Barbara, CA 93106, USA
- Marine Science Institute, University of California, Santa Barbara, CA 93106, USA
- Bren School of Environmental Science and Management, University of California, Santa Barbara, CA, 93106, USA
| | - Echelle S Burns
- Environmental Markets Lab, University of California, Santa Barbara, CA 93106, USA
- Marine Science Institute, University of California, Santa Barbara, CA 93106, USA
- Bren School of Environmental Science and Management, University of California, Santa Barbara, CA, 93106, USA
| | - Nidhi G D'Costa
- Biology Department, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Leonardo Manir Feitosa
- Bren School of Environmental Science and Management, University of California, Santa Barbara, CA, 93106, USA
| | - Maria L D Palomares
- Sea Around Us, Institute for the Oceans and Fisheries, University of British Columbia, Vancouver, BC, Canada V6T 1Z4
| | - Laurenne Schiller
- School of Public Policy and Administration, Carleton University, Ottawa, ON K1S 5B6, Canada
| | - Darcy Bradley
- Environmental Markets Lab, University of California, Santa Barbara, CA 93106, USA
- Marine Science Institute, University of California, Santa Barbara, CA 93106, USA
- Bren School of Environmental Science and Management, University of California, Santa Barbara, CA, 93106, USA
- The Nature Conservancy, California Oceans Program, Santa Barbara, CA 93117, USA
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24
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Lattanzi P, Pulcinella J, Battaglia P, Di Cintio A, Ferrà C, Di Franco A, Tassetti AN. Bridging the gap in fishing effort mapping: a spatially-explicit fisheries dataset for Campanian MPAs, Italy. Sci Data 2024; 11:54. [PMID: 38195755 PMCID: PMC10776858 DOI: 10.1038/s41597-023-02883-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 12/27/2023] [Indexed: 01/11/2024] Open
Abstract
Recent technological advancements have facilitated the extensive collection of movement data from large-scale fishing vessels, yet a significant data gap remains for small-scale fisheries. This gap hinders the development of consistent exploitation patterns and meeting the information needs for marine spatial planning in fisheries management. This challenge is specifically addressed in the Campania region of Italy, where several Marine Protected Areas support biodiversity conservation and fisheries management. The authors have created a spatially-explicit dataset that encompasses both large-scale (vessels exceeding 12 meters in length) and small-scale (below 12 meters) fishing efforts. This dataset (available at https://doi.org/10.6084/m9.figshare.23592006 ) is derived from vessel tracking data and participatory mapping. It offers insights into potential conflicts between different fishing segments and their interactions with priority species and habitats. The data can assist researchers and coastal management stakeholders in formulating policies that reduce resource competition and promote ecosystem-based fisheries management. Furthermore, the provided mapping approach is adaptable for other regions and decision-making frameworks, as we are committed to sharing the tools and techniques we employed.
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Affiliation(s)
- Pamela Lattanzi
- National Research Council, Institute of Marine Biological Resources and Biotechnologies (CNR-IRBIM), Ancona, Italy
- Department of Biological, Geological and Environmental Sciences (BiGeA), University of Bologna, Bologna, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
| | - Jacopo Pulcinella
- National Research Council, Institute of Marine Biological Resources and Biotechnologies (CNR-IRBIM), Ancona, Italy
| | - Pietro Battaglia
- NBFC, National Biodiversity Future Center, Palermo, Italy
- Stazione Zoologica Anton Dohrn, National Institute of Biology, Ecology and Marine Biotechnology, Sicily Marine Centre, Messina, Italy
| | - Antonio Di Cintio
- Stazione Zoologica Anton Dohrn, National Institute of Biology, Ecology and Marine Biotechnology, Villa Comunale, Naples, Italy
| | - Carmen Ferrà
- National Research Council, Institute of Marine Biological Resources and Biotechnologies (CNR-IRBIM), Ancona, Italy
- Department of Biological, Geological and Environmental Sciences (BiGeA), University of Bologna, Bologna, Italy
| | - Antonio Di Franco
- NBFC, National Biodiversity Future Center, Palermo, Italy
- Stazione Zoologica Anton Dohrn, National Institute of Biology, Ecology and Marine Biotechnology, Sicily Marine Centre, Palermo, Italy
| | - Anna Nora Tassetti
- National Research Council, Institute of Marine Biological Resources and Biotechnologies (CNR-IRBIM), Ancona, Italy.
- NBFC, National Biodiversity Future Center, Palermo, Italy.
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25
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Gimeno M, Giménez J, Chiaradia A, Davis LS, Seddon PJ, Ropert-Coudert Y, Reisinger RR, Coll M, Ramírez F. Climate and human stressors on global penguin hotspots: Current assessments for future conservation. GLOBAL CHANGE BIOLOGY 2024; 30:e17143. [PMID: 38273518 DOI: 10.1111/gcb.17143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 12/14/2023] [Indexed: 01/27/2024]
Abstract
As charismatic and iconic species, penguins can act as "ambassadors" or flagship species to promote the conservation of marine habitats in the Southern Hemisphere. Unfortunately, there is a lack of reliable, comprehensive, and systematic analysis aimed at compiling spatially explicit assessments of the multiple impacts that the world's 18 species of penguin are facing. We provide such an assessment by combining the available penguin occurrence information from Global Biodiversity Information Facility (>800,000 occurrences) with three main stressors: climate-driven environmental changes at sea, industrial fisheries, and human disturbances on land. Our analyses provide a quantitative assessment of how these impacts are unevenly distributed spatially within species' distribution ranges. Consequently, contrasting pressures are expected among species, and populations within species. The areas coinciding with the greatest impacts for penguins are the coast of Perú, the Patagonian Shelf, the Benguela upwelling region, and the Australian and New Zealand coasts. When weighting these potential stressors with species-specific vulnerabilities, Humboldt (Spheniscus humboldti), African (Spheniscus demersus), and Chinstrap penguin (Pygoscelis antarcticus) emerge as the species under the most pressure. Our approach explicitly differentiates between climate and human stressors, since the more achievable management of local anthropogenic stressors (e.g., fisheries and land-based threats) may provide a suitable means for facilitating cumulative impacts on penguins, especially where they may remain resilient to global processes such as climate change. Moreover, our study highlights some poorly represented species such as the Northern Rockhopper (Eudyptes moseleyi), Snares (Eudyptes robustus), and Erect-crested penguin (Eudyptes sclateri) that need internationally coordinated efforts for data acquisition and data sharing to understand their spatial distribution properly.
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Affiliation(s)
- Míriam Gimeno
- Institut de Ciencies del Mar, Recursos Marins Renovables, Barcelona, Spain
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain
| | - Joan Giménez
- Institut de Ciencies del Mar, Recursos Marins Renovables, Barcelona, Spain
- Centro Oceanográfico de Málaga (COMA), Instituto Español de Oceanografía (IEO-CSIC), Fuengirola, Spain
| | - Andre Chiaradia
- Conservation Department, Phillip Island Nature Parks, Cowes, Victoria, Australia
| | | | | | | | - Ryan R Reisinger
- School of Ocean and Earth Science, University of Southampton, Southampton, UK
| | - Marta Coll
- Institut de Ciencies del Mar, Recursos Marins Renovables, Barcelona, Spain
- Ecopath International Initiative (EII), Barcelona, Spain
| | - Francisco Ramírez
- Institut de Ciencies del Mar, Recursos Marins Renovables, Barcelona, Spain
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26
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Paolo FS, Kroodsma D, Raynor J, Hochberg T, Davis P, Cleary J, Marsaglia L, Orofino S, Thomas C, Halpin P. Satellite mapping reveals extensive industrial activity at sea. Nature 2024; 625:85-91. [PMID: 38172362 PMCID: PMC10764273 DOI: 10.1038/s41586-023-06825-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 11/02/2023] [Indexed: 01/05/2024]
Abstract
The world's population increasingly relies on the ocean for food, energy production and global trade1-3, yet human activities at sea are not well quantified4,5. We combine satellite imagery, vessel GPS data and deep-learning models to map industrial vessel activities and offshore energy infrastructure across the world's coastal waters from 2017 to 2021. We find that 72-76% of the world's industrial fishing vessels are not publicly tracked, with much of that fishing taking place around South Asia, Southeast Asia and Africa. We also find that 21-30% of transport and energy vessel activity is missing from public tracking systems. Globally, fishing decreased by 12 ± 1% at the onset of the COVID-19 pandemic in 2020 and had not recovered to pre-pandemic levels by 2021. By contrast, transport and energy vessel activities were relatively unaffected during the same period. Offshore wind is growing rapidly, with most wind turbines confined to small areas of the ocean but surpassing the number of oil structures in 2021. Our map of ocean industrialization reveals changes in some of the most extensive and economically important human activities at sea.
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Affiliation(s)
| | | | - Jennifer Raynor
- Forest and Wildlife Ecology Department, University of Wisconsin-Madison, Madison, WI, USA
| | | | - Pete Davis
- Global Fishing Watch, Washington, DC, USA
| | - Jesse Cleary
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC, USA
| | | | - Sara Orofino
- Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, CA, USA
| | | | - Patrick Halpin
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC, USA
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27
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Geng R, Liu X, Lv X, Hu X. Spatial-temporal variation of marine fishing activities responding to policy and social events in China. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 348:119321. [PMID: 37844402 DOI: 10.1016/j.jenvman.2023.119321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 10/01/2023] [Accepted: 10/10/2023] [Indexed: 10/18/2023]
Abstract
The spatial-temporal variation of the impact of political and social factors such as (Fishing Moratorium, Marine Protected Areas, New Year, and COVID-19) on fishing activities offshore was evaluated based on fishing efforts data by AIS from 2013 to 2020 for China. It is found that the maximum fishing intensity occurs within 20-30 km of the coastline, the area within 40 km of the coastline covers 51% of fishing activities, and within 100 km of the coastline accounts for 92% of fishing activities. From 2013 to 2016, fishing hotspots showed a highly aggregated spread in the Bohai Sea and the East China Sea. Since 2017, China's hot fishing areas have gradually fragmented and southern moved. During the fishing moratorium, the fishing efforts decreased by 51% compared to the pre-moratorium, and after the moratorium, the fishing efforts increased by 81% compared to the pre-moratorium on average. We investigated fishing activities in and around 249 MPAs in China and found that 71% of MPAs are free of fishing, and average fishing intensity across MPAs is 35% lower than not protected areas. Regarding the social events, it is concluded that during the New Year holiday, the fishing efforts and fishing area were reduced by 79% and 73%, respectively, compared to the regular fishing period. The COVID-19 epidemic prompted a decrease in fishing efforts in 2020 for the first time since 2013, with the average fishing efforts in 2020 being 14% and 6% lower than in 2019 and 2017 to 2019, respectively.
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Affiliation(s)
- Ruiying Geng
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China.
| | - Xin Liu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, PR China.
| | - Xin Lv
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China.
| | - Xiaoke Hu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, PR China.
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28
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Bonthond G, Beermann J, Gutow L, Neumann A, Barboza FR, Desiderato A, Fofonova V, Helber SB, Khodami S, Kraan C, Neumann H, Rohde S, Schupp PJ. Benthic microbial biogeographic trends in the North Sea are shaped by an interplay of environmental drivers and bottom trawling effort. ISME COMMUNICATIONS 2023; 3:132. [PMID: 38102238 PMCID: PMC10724143 DOI: 10.1038/s43705-023-00336-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 11/09/2023] [Accepted: 11/16/2023] [Indexed: 12/17/2023]
Abstract
Microbial composition and diversity in marine sediments are shaped by environmental, biological, and anthropogenic processes operating at different scales. However, our understanding of benthic microbial biogeography remains limited. Here, we used 16S rDNA amplicon sequencing to characterize benthic microbiota in the North Sea from the top centimeter of 339 sediment samples. We utilized spatially explicit statistical models, to disentangle the effects of the different predictors, including bottom trawling intensity, a prevalent industrial fishing practice which heavily impacts benthic ecosystems. Fitted models demonstrate how the geographic interplay of different environmental and anthropogenic drivers shapes the diversity, structure and potential metabolism of benthic microbial communities. Sediment properties were the primary determinants, with diversity increasing with sediment permeability but also with mud content, highlighting different underlying processes. Additionally, diversity and structure varied with total organic matter content, temperature, bottom shear stress and bottom trawling. Changes in diversity associated with bottom trawling intensity were accompanied by shifts in predicted energy metabolism. Specifically, with increasing trawling intensity, we observed a transition toward more aerobic heterotrophic and less denitrifying predicted metabolism. Our findings provide first insights into benthic microbial biogeographic patterns on a large spatial scale and illustrate how anthropogenic activity such as bottom trawling may influence the distribution and abundances of microbes and potential metabolism at macroecological scales.
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Affiliation(s)
- Guido Bonthond
- Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky University Oldenburg, Schleusenstrasse 1, 26382, Wilhelmshaven, Germany.
| | - Jan Beermann
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - Lars Gutow
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | | | | | - Andrea Desiderato
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570, Bremerhaven, Germany
- Department of Invertebrate Zoology and Hydrobiology, University of Lodz, 90-136, Lodz, Poland
| | - Vera Fofonova
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - Stephanie B Helber
- Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky University Oldenburg, Schleusenstrasse 1, 26382, Wilhelmshaven, Germany
| | - Sahar Khodami
- Senckenberg am Meer Wilhelmshaven, German Centre for Marine Biodiversity Research, Südstrand 44, 26382, Wilhelmshaven, Germany
| | - Casper Kraan
- Thünen Institute of Sea Fisheries, Herwigstraße 31, 27572, Bremerhaven, Germany
| | - Hermann Neumann
- Thünen Institute of Sea Fisheries, Herwigstraße 31, 27572, Bremerhaven, Germany
| | - Sven Rohde
- Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky University Oldenburg, Schleusenstrasse 1, 26382, Wilhelmshaven, Germany
| | - Peter J Schupp
- Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky University Oldenburg, Schleusenstrasse 1, 26382, Wilhelmshaven, Germany
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), Ammerländer Heerstrasse 231, D-26129, Oldenburg, Germany
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29
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Votier S. Marine ecology: Increased fishing subsidy for seabirds. Curr Biol 2023; 33:R1240-R1242. [PMID: 38052176 DOI: 10.1016/j.cub.2023.10.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Innovative use of light loggers reveals increased nocturnal foraging activity at fishing vessels by pelagic seabirds, illuminating the complex ways in which fisheries and biodiversity interact.
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30
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Cazalis V, Santini L, Lucas PM, González-Suárez M, Hoffmann M, Benítez-López A, Pacifici M, Schipper AM, Böhm M, Zizka A, Clausnitzer V, Meyer C, Jung M, Butchart SHM, Cardoso P, Mancini G, Akçakaya HR, Young BE, Patoine G, Di Marco M. Prioritizing the reassessment of data-deficient species on the IUCN Red List. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2023; 37:e14139. [PMID: 37394972 DOI: 10.1111/cobi.14139] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 06/05/2023] [Accepted: 06/08/2023] [Indexed: 07/04/2023]
Abstract
Despite being central to the implementation of conservation policies, the usefulness of the International Union for Conservation of Nature (IUCN) Red List of Threatened Species is hampered by the 14% of species classified as data-deficient (DD) because information to evaluate these species' extinction risk was lacking when they were last assessed or because assessors did not appropriately account for uncertainty. Robust methods are needed to identify which DD species are more likely to be reclassified in one of the data-sufficient IUCN Red List categories. We devised a reproducible method to help red-list assessors prioritize reassessment of DD species and tested it with 6887 DD species of mammals, reptiles, amphibians, fishes, and Odonata (dragonflies and damselflies). For each DD species in these groups, we calculated its probability of being classified in a data-sufficient category if reassessed today from covariates measuring available knowledge (e.g., number of occurrence records or published articles available), knowledge proxies (e.g., remoteness of the range), and species characteristics (e.g., nocturnality); calculated change in such probability since last assessment from the increase in available knowledge (e.g., new occurrence records); and determined whether the species might qualify as threatened based on recent rate of habitat loss determined from global land-cover maps. We identified 1907 species with a probability of being reassessed in a data-sufficient category of >0.5; 624 species for which this probability increased by >0.25 since last assessment; and 77 species that could be reassessed as near threatened or threatened based on habitat loss. Combining these 3 elements, our results provided a list of species likely to be data-sufficient such that the comprehensiveness and representativeness of the IUCN Red List can be improved.
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Affiliation(s)
- Victor Cazalis
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Leipzig University, Leipzig, Germany
| | - Luca Santini
- Department of Biology and Biotechnologies "Charles Darwin", Sapienza Università di Roma, Rome, Italy
| | - Pablo M Lucas
- Department of Biology and Biotechnologies "Charles Darwin", Sapienza Università di Roma, Rome, Italy
| | - Manuela González-Suárez
- Ecology and Evolutionary Biology, School of Biological Sciences, University of Reading, Reading, UK
| | | | - Ana Benítez-López
- Integrative Ecology Group, Estación Biológica de Doñana (EBD-CSIC), Sevilla, Spain
- Department of Zoology, Faculty of Science, University of Granada, Granada, Spain
| | - Michela Pacifici
- Global Mammal Assessment Programme, Department of Biology and Biotechnologies "Charles Darwin", Sapienza Università di Roma, Rome, Italy
| | - Aafke M Schipper
- Department of Environmental Science, Radboud Institute for Biological and Environmental Sciences (RIBES), Radboud University, Nijmegen, The Netherlands
- PBL Netherlands Environmental Assessment Agency, The Hague, The Netherlands
| | - Monika Böhm
- Global Center for Species Survival, Indianapolis Zoological Society, Indianapolis, Indiana, USA
| | - Alexander Zizka
- Department of Biology, Philipps-University Marburg, Marburg, Germany
| | | | - Carsten Meyer
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Geosciences and Geography, Martin Luther University Halle-Wittenberg, Halle, Germany
- Institute of Biology, Leipzig University, Leipzig, Germany
| | - Martin Jung
- Biodiversity, Ecology and Conservation Group, Biodiversity and Natural Resources Management Programme, International Institute for Applied Systems Analysis, Laxenburg, Austria
| | - Stuart H M Butchart
- BirdLife International, David Attenborough Building, Cambridge, UK
- Department of Zoology, University of Cambridge, Cambridge, UK
| | - Pedro Cardoso
- Laboratory for Integrative Biodiversity Research (LIBRe), Finnish Museum of Natural History Luomus, University of Helsinki, Helsinki, Finland
| | - Giordano Mancini
- Department of Biology and Biotechnologies "Charles Darwin", Sapienza Università di Roma, Rome, Italy
| | - H Reşit Akçakaya
- Department of Ecology and Evolution, Stony Brook University, Stony Brook, New York, USA
- IUCN Species Survival Commission (SSC), Gland, Switzerland
| | | | - Guillaume Patoine
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biology, Leipzig University, Leipzig, Germany
| | - Moreno Di Marco
- Department of Biology and Biotechnologies "Charles Darwin", Sapienza Università di Roma, Rome, Italy
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Pimiento C, Albouy C, Silvestro D, Mouton TL, Velez L, Mouillot D, Judah AB, Griffin JN, Leprieur F. Functional diversity of sharks and rays is highly vulnerable and supported by unique species and locations worldwide. Nat Commun 2023; 14:7691. [PMID: 38001077 PMCID: PMC10673927 DOI: 10.1038/s41467-023-43212-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 11/02/2023] [Indexed: 11/26/2023] Open
Abstract
Elasmobranchs (sharks, rays and skates) are among the most threatened marine vertebrates, yet their global functional diversity remains largely unknown. Here, we use a trait dataset of >1000 species to assess elasmobranch functional diversity and compare it against other previously studied biodiversity facets (taxonomic and phylogenetic), to identify species- and spatial- conservation priorities. We show that threatened species encompass the full extent of functional space and disproportionately include functionally distinct species. Applying the conservation metric FUSE (Functionally Unique, Specialised, and Endangered) reveals that most top-ranking species differ from the top Evolutionarily Distinct and Globally Endangered (EDGE) list. Spatial analyses further show that elasmobranch functional richness is concentrated along continental shelves and around oceanic islands, with 18 distinguishable hotspots. These hotspots only marginally overlap with those of other biodiversity facets, reflecting a distinct spatial fingerprint of functional diversity. Elasmobranch biodiversity facets converge with fishing pressure along the coast of China, which emerges as a critical frontier in conservation. Meanwhile, several components of elasmobranch functional diversity fall in high seas and/or outside the global network of marine protected areas. Overall, our results highlight acute vulnerability of the world's elasmobranchs' functional diversity and reveal global priorities for elasmobranch functional biodiversity previously overlooked.
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Affiliation(s)
- Catalina Pimiento
- Department of Paleontology, University of Zurich, Zurich, Switzerland.
- Department of Biosciences, Swansea University, Swansea, UK.
- Smithsonian Tropical Research Institute, Balboa, Panama.
| | - Camille Albouy
- Ecosystem and Landscape Evolution, Institute of Terrestrial Ecosystems, Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland
- Unit of Land Change Science, Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
| | - Daniele Silvestro
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- Swiss Institute of Bioinformatics, Fribourg, Switzerland
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Théophile L Mouton
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
- International Union for Conservation of Nature Species Survival Commission Shark Specialist Group, P.O. Box 29588, Dubai, United Arab Emirates
| | - Laure Velez
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - David Mouillot
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Aaron B Judah
- Department of Biology, Dalhousie University, Halifax, NS, Canada
| | - John N Griffin
- Department of Biosciences, Swansea University, Swansea, UK
| | - Fabien Leprieur
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
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32
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Braun CD, Della Penna A, Arostegui MC, Afonso P, Berumen ML, Block BA, Brown CA, Fontes J, Furtado M, Gallagher AJ, Gaube P, Golet WJ, Kneebone J, Macena BCL, Mucientes G, Orbesen ES, Queiroz N, Shea BD, Schratwieser J, Sims DW, Skomal GB, Snodgrass D, Thorrold SR. Linking vertical movements of large pelagic predators with distribution patterns of biomass in the open ocean. Proc Natl Acad Sci U S A 2023; 120:e2306357120. [PMID: 38150462 PMCID: PMC10666118 DOI: 10.1073/pnas.2306357120] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 09/23/2023] [Indexed: 12/29/2023] Open
Abstract
Many predator species make regular excursions from near-surface waters to the twilight (200 to 1,000 m) and midnight (1,000 to 3,000 m) zones of the deep pelagic ocean. While the occurrence of significant vertical movements into the deep ocean has evolved independently across taxonomic groups, the functional role(s) and ecological significance of these movements remain poorly understood. Here, we integrate results from satellite tagging efforts with model predictions of deep prey layers in the North Atlantic Ocean to determine whether prey distributions are correlated with vertical habitat use across 12 species of predators. Using 3D movement data for 344 individuals who traversed nearly 1.5 million km of pelagic ocean in [Formula: see text]42,000 d, we found that nearly every tagged predator frequented the twilight zone and many made regular trips to the midnight zone. Using a predictive model, we found clear alignment of predator depth use with the expected location of deep pelagic prey for at least half of the predator species. We compared high-resolution predator data with shipboard acoustics and selected representative matches that highlight the opportunities and challenges in the analysis and synthesis of these data. While not all observed behavior was consistent with estimated prey availability at depth, our results suggest that deep pelagic biomass likely has high ecological value for a suite of commercially important predators in the open ocean. Careful consideration of the disruption to ecosystem services provided by pelagic food webs is needed before the potential costs and benefits of proceeding with extractive activities in the deep ocean can be evaluated.
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Affiliation(s)
- Camrin D. Braun
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA02543
| | - Alice Della Penna
- Institute of Marine Science, University of Auckland, Auckland1010, New Zealand
- School of Biological Sciences, University of Auckland, Auckland1010, New Zealand
| | - Martin C. Arostegui
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA02543
| | - Pedro Afonso
- Institute of Marine Sciences - OKEANOS, University of the Azores, Horta9901-862, Portugal
| | - Michael L. Berumen
- Red Sea Research Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal23955, Kingdom of Saudi Arabia
| | - Barbara A. Block
- Hopkins Marine Station, Stanford University, Pacific Grove, CA93950
| | - Craig A. Brown
- National Oceanic and Atmospheric Administration Fisheries, Southeast Fisheries Science Center, Miami, FL33149
| | - Jorge Fontes
- Institute of Marine Sciences - OKEANOS, University of the Azores, Horta9901-862, Portugal
| | - Miguel Furtado
- Institute of Marine Sciences - OKEANOS, University of the Azores, Horta9901-862, Portugal
| | | | - Peter Gaube
- Applied Physics Laboratory–University of Washington, Seattle, WA98105
| | - Walter J. Golet
- The School of Marine Sciences, The University of Maine, Orono, ME04469
- The Gulf of Maine Research Institute, Portland, ME04101
| | - Jeff Kneebone
- Anderson Cabot Center for Ocean Life at the New England Aquarium, Boston, MA02110
| | - Bruno C. L. Macena
- Institute of Marine Sciences - OKEANOS, University of the Azores, Horta9901-862, Portugal
| | - Gonzalo Mucientes
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão4485-661, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão4485-661, Portugal
| | - Eric S. Orbesen
- National Oceanic and Atmospheric Administration Fisheries, Southeast Fisheries Science Center, Miami, FL33149
| | - Nuno Queiroz
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão4485-661, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão4485-661, Portugal
| | | | | | - David W. Sims
- Marine Biological Association, PlymouthPL1 2PB, United Kingdom
- Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, SouthamptonSO14 3ZH, United Kingdom
| | | | - Derke Snodgrass
- National Oceanic and Atmospheric Administration Fisheries, Southeast Fisheries Science Center, Miami, FL33149
| | - Simon R. Thorrold
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA02543
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33
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Duncan EM, Vieira N, González-Irusta JM, Dominguez-Carrió C, Morato T, Carreiro-Silva M, Jakobsen J, Jakobsen K, Porteiro F, Schläpfer N, Herrera L, Ramos M, Rodríguez Y, Pereira JM, Fauconnet L, Rodrigues L, Parra H, Pham CK. Predicting the distribution and abundance of abandoned, lost or discarded fishing gear (ALDFG) in the deep sea of the Azores (North Atlantic). THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:166579. [PMID: 37652373 DOI: 10.1016/j.scitotenv.2023.166579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/04/2023] [Accepted: 08/24/2023] [Indexed: 09/02/2023]
Abstract
Abandoned, lost, or discarded fishing gear (ALDFG), represents a significant percentage of the global plastic pollution, currently considered one of the major sources from sea-based activities. However, there is still limited understanding of the quantities of ALDFG present on the seafloor and their impacts. In this study, data on the presence of ALDFG was obtained from a large archive of seafloor video footage (351 dives) collected by different imaging platforms in the Azores region over 15 years (2006-2020). Most ALDFG items observed in the images relate to the local bottom longline fishery operating in the region, and include longlines but also anchors, weights, cables and buoys. A generalized additive mixed model (GAMM) was used to predict the distribution and abundance of ALDFG over the seafloor within the limits of the Azores Exclusive Economic Zone (EEZ) using a suite of environmental and anthropogenic variables. We estimated an average of 113 ± 310 items km-2 (597 ± 756 per km-2 above 1000 m depth), which could imply that over 20 million ALDFG items are present on the deep seafloor of the Azores EEZ. The resulting model identified potential hotspots of ALDFG along the seabed, some of them located over sensitive benthic habitats, such as specific seamounts. In addition, the interactions between ALDFG and benthic organisms were also analysed. Numerous entanglements were observed with several species of large anthozoans and sponges. The use of predictive distribution modelling for ALDFG should be regarded as a useful tool to support ecosystem-based management, which can provide indirect information about fishing pressure and allow the identification of potential high-risk areas. Additional knowledge about the sources, amounts, fates and impacts of ALDFG will be key to address the global issue of plastic pollution and the effects of fishing on marine ecosystems.
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Affiliation(s)
- Emily M Duncan
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Nina Vieira
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | | | - Carlos Dominguez-Carrió
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal; IMAR Instituto do Mar, Universidade dos Açores, Horta, Portugal
| | - Telmo Morato
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal; IMAR Instituto do Mar, Universidade dos Açores, Horta, Portugal
| | - Marina Carreiro-Silva
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal; IMAR Instituto do Mar, Universidade dos Açores, Horta, Portugal
| | | | | | - Filipe Porteiro
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Nina Schläpfer
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Laura Herrera
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Manuela Ramos
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal; IMAR Instituto do Mar, Universidade dos Açores, Horta, Portugal
| | - Yasmina Rodríguez
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - João M Pereira
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Laurence Fauconnet
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Luís Rodrigues
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal; IMAR Instituto do Mar, Universidade dos Açores, Horta, Portugal
| | - Hugo Parra
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Christopher K Pham
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal.
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He B, Yan F, Su F, Lyne V, Tang J. Prediction of fishing intensity and trends across South China Sea biogeographic zones. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 899:165691. [PMID: 37482352 DOI: 10.1016/j.scitotenv.2023.165691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 07/06/2023] [Accepted: 07/19/2023] [Indexed: 07/25/2023]
Abstract
The volume of industrial fishing in the South China Sea ranks among the top global sustainable fisheries concerns of the Food and Agriculture Organization (FAO). To better understand the scale of management challenges, biogeographic zones of the SCS were characterized, and within each a multivariate GAM (General Additive Model) was fitted to predict and map the complete fishing activities from 2017 to 2020. Model variables, some incomplete or with gaps, included: VIIRS DNB night-time light imagery; Global Fisheries Watch (GFW) data; satellite Ocean Colour; Sea Surface Temperature; and bathymetry data. Four biogeographic zones with differing fishing patterns and trends were identified. We used cross-validation and the GAM model's own tuning method for model prediction accuracy determination, which performed well in four biogeographic zones (R2 respectively: 0.62, 0.68, 0.74 and 0.71). High-intensity fishing grounds are mainly distributed in offshore continental shelf areas. From 2017 to 2019, high-intensity fishing grounds were located near the Beibu Gulf of Vietnam, south Vietnam, part of the Gulf of Thailand and the central Java Sea, where fishing effort greater than 50 h exceeded average annual SCS fishing intensity for several years. By season, intensity and extent of fishing in Spring were largest. In 2020, due to the impact of COVID-19, except for Spring, fishing volume generally decreased. Our experimental results provide new insights and an adaptable biogeographic modelling methodology to map the scale and intensity of regional fishing activities more accurately and completely. This more comprehensive database, that takes account of intrinsic biogeographic fishery context, will help improve and strengthen the regulation of fishing activities around the world.
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Affiliation(s)
- Bin He
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China; State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Collaborative Innovation Center for the South China Sea Studies, Nanjing University, Nanjing 210023, China.
| | - Fengqin Yan
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Collaborative Innovation Center for the South China Sea Studies, Nanjing University, Nanjing 210023, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Fenzhen Su
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China; State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Collaborative Innovation Center for the South China Sea Studies, Nanjing University, Nanjing 210023, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Vincent Lyne
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; IMAS-Hobart, University of Tasmania, Hobart, TAS 7004, Australia.
| | - Jiasheng Tang
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou, China.
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35
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Englander G, Costello C. A fish cartel for Africa. Nat Commun 2023; 14:7124. [PMID: 37957148 PMCID: PMC10643414 DOI: 10.1038/s41467-023-42886-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023] Open
Abstract
Many countries sell fishing rights to foreign nations and fishers. Although African coastal waters are among the world's most biologically rich, African countries earn much less than their peers from selling access to foreign fishers. African countries sell fishing access individually (in contrast to some Pacific countries who sell access as a bloc). We develop a bilateral oligopoly model to simulate the effects of an African fish cartel. The model shows that wielding market power entails both ecological and economic dimensions. Africa would substantially restrict access catch, which raises biomass by 16%. But this also confers economic benefits to all African nations, raising profits by an average of 23%. These benefits arise because market power shifts from foreign buyers to African sellers. While impediments to sustainable development like corruption are hard to change in the medium-term, deeper African integration is an already-emerging solution to African countries' economic and ecological challenges.
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Affiliation(s)
| | - Christopher Costello
- Environmental Markets Lab, Bren School of Environmental Science and Management, and Marine Science Institute, University of California, Santa Barbara, CA, USA
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36
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Bridges AEH, Barnes DKA, Bell JB, Ross RE, Voges L, Howell KL. Filling the data gaps: Transferring models from data-rich to data-poor deep-sea areas to support spatial management. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 345:118325. [PMID: 37390730 DOI: 10.1016/j.jenvman.2023.118325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 06/02/2023] [Accepted: 06/03/2023] [Indexed: 07/02/2023]
Abstract
Spatial management of the deep sea is challenging due to limited available data on the distribution of species and habitats to support decision making. In the well-studied North Atlantic, predictive models of species distribution and habitat suitability have been used to fill data gaps and support sustainable management. In the South Atlantic and other poorly studied regions, this is not possible due to a massive lack of data. In this study, we investigated whether models constructed in data-rich areas can be used to inform data-poor regions (with otherwise similar environmental conditions). We used a novel model transfer approach to identify to what extent a habitat suitability model for Desmophyllum pertusum reef, built in a data-rich basin (North Atlantic), could be transferred usefully to a data-poor basin (South Atlantic). The transferred model was built using the Maximum Entropy algorithm and constructed with 227 presence and 3064 pseudo-absence points, and 200 m resolution environmental grids. Performance in the transferred region was validated using an independent dataset of D. pertusum presences and absences, with assessments made using both threshold-dependent and -independent metrics. We found that a model for D. pertusum reef fitted to North Atlantic data transferred reasonably well to the South Atlantic basin, with an area under the curve of 0.70. Suitable habitat for D. pertusum reef was predicted on 20 of the assessed 27 features including seamounts. Nationally managed Marine Protected Areas provide significant protection for D. pertusum reef habitat in the region, affording full protection from bottom trawling to 14 of the 20 suitable features. In areas beyond national jurisdiction (ABNJ), we found four seamounts that provided suitable habitat for D. pertusum reef to be at least partially protected from bottom trawling, whilst two did not fall within fisheries closures. There are factors to consider when developing models for transfer including data resolution and predictor type. Nevertheless, the promising results of this application demonstrate that model transfer approaches stand to provide significant contributions to spatial planning processes through provision of new, best available data. This is particularly true for ABNJ and areas that have previously undergone little scientific exploration such as the global south.
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Affiliation(s)
- Amelia E H Bridges
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK; British Antarctic Survey, NERC, Cambridge, UK; Centre for Environment, Fisheries and Aquaculture Science (Cefas), Pakefield Road, Lowestoft, UK.
| | | | - James B Bell
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Pakefield Road, Lowestoft, UK
| | - Rebecca E Ross
- Benthic Communities Research Group, Institute of Marine Research (IMR), Bergen, Norway
| | - Lizette Voges
- South East Atlantic Fisheries Organisation, Swakopmund, Namibia
| | - Kerry L Howell
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK
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37
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Watson JT, Ames R, Holycross B, Suter J, Somers K, Kohler C, Corrigan B. Fishery catch records support machine learning-based prediction of illegal fishing off US West Coast. PeerJ 2023; 11:e16215. [PMID: 37872950 PMCID: PMC10590572 DOI: 10.7717/peerj.16215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/11/2023] [Indexed: 10/25/2023] Open
Abstract
Illegal, unreported, and unregulated (IUU) fishing is a major problem worldwide, often made more challenging by a lack of at-sea and shoreside monitoring of commercial fishery catches. Off the US West Coast, as in many places, a primary concern for enforcement and management is whether vessels are illegally fishing in locations where they are not permitted to fish. We explored the use of supervised machine learning analysis in a partially observed fishery to identify potentially illicit behaviors when vessels did not have observers on board. We built classification models (random forest and gradient boosting ensemble tree estimators) using labeled data from nearly 10,000 fishing trips for which we had landing records (i.e., catch data) and observer data. We identified a set of variables related to catch (e.g., catch weights and species) and delivery port that could predict, with 97% accuracy, whether vessels fished in state versus federal waters. Notably, our model performances were robust to inter-annual variability in the fishery environments during recent anomalously warm years. We applied these models to nearly 60,000 unobserved landing records and identified more than 500 instances in which vessels may have illegally fished in federal waters. This project was developed at the request of fisheries enforcement investigators, and now an automated system analyzes all new unobserved landings records to identify those in need of additional investigation for potential violations. Similar approaches informed by the spatial preferences of species landed may support monitoring and enforcement efforts in any number of partially observed, or even totally unobserved, fisheries globally.
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Affiliation(s)
- Jordan T. Watson
- Pacific Islands Ocean Observing System, University of Hawaii at Manoa, Honolulu, HI, United States of America
| | - Robert Ames
- Pacific States Marine Fisheries Commission, Portland, OR, United States of America
| | - Brett Holycross
- Pacific States Marine Fisheries Commission, Portland, OR, United States of America
| | - Jenny Suter
- Pacific States Marine Fisheries Commission, Portland, OR, United States of America
- Pacific Islands Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Honolulu, HI, United States of America
| | - Kayleigh Somers
- Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA, United States of America
| | - Camille Kohler
- neXus Data Solutions, LLC, Anchorage, AK, United States of America
| | - Brian Corrigan
- West Coast Division, Office of Law Enforcement, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA, United States of America
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Darby JH, Clairbaux M, Quinn JL, Thompson P, Quinn L, Cabot D, Strøm H, Thórarinsson TL, Kempf J, Jessopp MJ. Decadal increase in vessel interactions by a scavenging pelagic seabird across the North Atlantic. Curr Biol 2023; 33:4225-4231.e3. [PMID: 37678252 DOI: 10.1016/j.cub.2023.08.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/21/2023] [Accepted: 08/10/2023] [Indexed: 09/09/2023]
Abstract
Fisheries waste is used by many seabirds as a supplementary source of food,1 but interacting with fishing vessels to obtain this resource puts birds at risk of entanglement in fishing gear and mortality.2 As a result, bycatch is one of the leading contributors to seabird decline worldwide,3 and this risk may increase over time as birds increasingly associate fishing vessels with food. Light-level geolocators mounted on seabirds can detect light emitted from vessels at night year-round.4 We used a 16-year time series of geolocator data from 296 northern fulmars (Fulmarus glacialis) breeding at temperate and arctic colonies to investigate trends of nocturnal vessel interactions in this scavenging pelagic seabird. Vessel attendance has progressively increased over the study period despite no corresponding increase in the number of vessels or availability of discards over the same time frame. Fulmars are highly mobile generalist surface feeders,5 so this may signal a reduction in available prey biomass in the upper water column, leading to increased reliance on anthropogenic food subsidies6 and increased risk of bycatch mortality in already threatened seabird populations. Individuals were consistent in the extent to which they interacted with vessels, as shown in other species,7 suggesting that population-level increases may be due to a higher proportion of fulmars following vessels rather than changes at an individual level. Higher encounter rates were correlated with lower time spent foraging and a geographically restricted overwintering distribution, suggesting an energetic advantage for these scavenging strategists compared with foraging for natural prey.
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Affiliation(s)
- Jamie H Darby
- School of Biological, Environmental and Earth Sciences, University College Cork, Cork T23 N73K, Ireland; School of Environmental Sciences, University of Liverpool, Liverpool L3 5DA, UK.
| | - Manon Clairbaux
- School of Biological, Environmental and Earth Sciences, University College Cork, Cork T23 N73K, Ireland; MaREI Centre for Energy, Climate and Marine, Environmental Research Institute, University College Cork, Cork P43 C573, Ireland
| | - John L Quinn
- School of Biological, Environmental and Earth Sciences, University College Cork, Cork T23 N73K, Ireland
| | - Paul Thompson
- Lighthouse Field Station, School of Biological Sciences, University of Aberdeen, Cromarty IV11 8YL, Scotland
| | - Lucy Quinn
- Lighthouse Field Station, School of Biological Sciences, University of Aberdeen, Cromarty IV11 8YL, Scotland; NatureScot, Great Glen House, Leachkin Road, Inverness IV3 8NW, Scotland
| | - David Cabot
- School of Biological, Environmental and Earth Sciences, University College Cork, Cork T23 N73K, Ireland
| | - Hallvard Strøm
- Norwegian Polar Institute, Fram Centre, Postbox 6606 Stakkevollan, 9296 Tromsø, Norway
| | | | - Jed Kempf
- School of Biological, Environmental and Earth Sciences, University College Cork, Cork T23 N73K, Ireland
| | - Mark J Jessopp
- School of Biological, Environmental and Earth Sciences, University College Cork, Cork T23 N73K, Ireland; MaREI Centre for Energy, Climate and Marine, Environmental Research Institute, University College Cork, Cork P43 C573, Ireland
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39
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Barbour N, Shillinger GL, Gurarie E, Hoover AL, Gaspar P, Temple-Boyer J, Candela T, Fagan WF, Bailey H. Incorporating multidimensional behavior into a risk management tool for a critically endangered and migratory species. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2023; 37:e14114. [PMID: 37204012 DOI: 10.1111/cobi.14114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 05/12/2023] [Accepted: 05/16/2023] [Indexed: 05/20/2023]
Abstract
Conservation of migratory species exhibiting wide-ranging and multidimensional behaviors is challenged by management efforts that only utilize horizontal movements or produce static spatial-temporal products. For the deep-diving, critically endangered eastern Pacific leatherback turtle, tools that predict where turtles have high risks of fisheries interactions are urgently needed to prevent further population decline. We incorporated horizontal-vertical movement model results with spatial-temporal kernel density estimates and threat data (gear-specific fishing) to develop monthly maps of spatial risk. Specifically, we applied multistate hidden Markov models to a biotelemetry data set (n = 28 leatherback tracks, 2004-2007). Tracks with dive information were used to characterize turtle behavior as belonging to 1 of 3 states (transiting, residential with mixed diving, and residential with deep diving). Recent fishing effort data from Global Fishing Watch were integrated with predicted behaviors and monthly space-use estimates to create maps of relative risk of turtle-fisheries interactions. Drifting (pelagic) longline fishing gear had the highest average monthly fishing effort in the study region, and risk indices showed this gear to also have the greatest potential for high-risk interactions with turtles in a residential, deep-diving behavioral state. Monthly relative risk surfaces for all gears and behaviors were added to South Pacific TurtleWatch (SPTW) (https://www.upwell.org/sptw), a dynamic management tool for this leatherback population. These modifications will refine SPTW's capability to provide important predictions of potential high-risk bycatch areas for turtles undertaking specific behaviors. Our results demonstrate how multidimensional movement data, spatial-temporal density estimates, and threat data can be used to create a unique conservation tool. These methods serve as a framework for incorporating behavior into similar tools for other aquatic, aerial, and terrestrial taxa with multidimensional movement behaviors.
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Affiliation(s)
- Nicole Barbour
- Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, Maryland, USA
- Department of Biology, University of Maryland, College Park, Maryland, USA
- Upwell, Monterey, California, USA
- Department of Environmental Biology, SUNY College of Environmental and Forest Sciences, Syracuse, New York, USA
| | - George L Shillinger
- Upwell, Monterey, California, USA
- Hopkins Marine Station, Stanford University, Pacific Grove, California, USA
- MigraMar, Bodega Bay, California, USA
| | - Eliezer Gurarie
- Department of Biology, University of Maryland, College Park, Maryland, USA
- Department of Environmental Biology, SUNY College of Environmental and Forest Sciences, Syracuse, New York, USA
| | | | | | | | - Tony Candela
- Upwell, Monterey, California, USA
- Mercator Ocean International, Toulouse, France
| | - William F Fagan
- Department of Biology, University of Maryland, College Park, Maryland, USA
| | - Helen Bailey
- Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, Maryland, USA
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40
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Braun CD, Arostegui MC, Farchadi N, Alexander M, Afonso P, Allyn A, Bograd SJ, Brodie S, Crear DP, Culhane EF, Curtis TH, Hazen EL, Kerney A, Lezama-Ochoa N, Mills KE, Pugh D, Queiroz N, Scott JD, Skomal GB, Sims DW, Thorrold SR, Welch H, Young-Morse R, Lewison RL. Building use-inspired species distribution models: Using multiple data types to examine and improve model performance. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2023; 33:e2893. [PMID: 37285072 DOI: 10.1002/eap.2893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 05/22/2023] [Indexed: 06/08/2023]
Abstract
Species distribution models (SDMs) are becoming an important tool for marine conservation and management. Yet while there is an increasing diversity and volume of marine biodiversity data for training SDMs, little practical guidance is available on how to leverage distinct data types to build robust models. We explored the effect of different data types on the fit, performance and predictive ability of SDMs by comparing models trained with four data types for a heavily exploited pelagic fish, the blue shark (Prionace glauca), in the Northwest Atlantic: two fishery dependent (conventional mark-recapture tags, fisheries observer records) and two fishery independent (satellite-linked electronic tags, pop-up archival tags). We found that all four data types can result in robust models, but differences among spatial predictions highlighted the need to consider ecological realism in model selection and interpretation regardless of data type. Differences among models were primarily attributed to biases in how each data type, and the associated representation of absences, sampled the environment and summarized the resulting species distributions. Outputs from model ensembles and a model trained on all pooled data both proved effective for combining inferences across data types and provided more ecologically realistic predictions than individual models. Our results provide valuable guidance for practitioners developing SDMs. With increasing access to diverse data sources, future work should further develop truly integrative modeling approaches that can explicitly leverage the strengths of individual data types while statistically accounting for limitations, such as sampling biases.
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Affiliation(s)
- Camrin D Braun
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
| | - Martin C Arostegui
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
| | - Nima Farchadi
- Institute for Ecological Monitoring and Management, San Diego State University, San Diego, California, USA
| | | | - Pedro Afonso
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
- Okeanos and Institute of Marine Research, University of the Azores, Horta, Portugal
| | - Andrew Allyn
- Gulf of Maine Research Institute, Portland, Maine, USA
| | - Steven J Bograd
- Environmental Research Division, Southwest Fisheries Science Center, National Oceanic and Atmospheric Administration, Monterey, California, USA
| | - Stephanie Brodie
- Environmental Research Division, Southwest Fisheries Science Center, National Oceanic and Atmospheric Administration, Monterey, California, USA
- Institute of Marine Sciences, University of California, Santa Cruz, California, USA
| | - Daniel P Crear
- ECS Federal, in Support of National Marine Fisheries Service, Atlantic Highly Migratory Species Management Division, Silver Spring, Maryland, USA
| | - Emmett F Culhane
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
- Massachusetts Institute of Technology-Woods Hole Oceanographic Institution Joint Program in Oceanography-Applied Ocean Science and Engineering, Cambridge, Massachusetts, USA
| | - Tobey H Curtis
- National Marine Fisheries Service, Atlantic Highly Migratory Species Management Division, Gloucester, Massachusetts, USA
| | - Elliott L Hazen
- Environmental Research Division, Southwest Fisheries Science Center, National Oceanic and Atmospheric Administration, Monterey, California, USA
- Institute of Marine Sciences, University of California, Santa Cruz, California, USA
| | - Alex Kerney
- Gulf of Maine Research Institute, Portland, Maine, USA
| | - Nerea Lezama-Ochoa
- Environmental Research Division, Southwest Fisheries Science Center, National Oceanic and Atmospheric Administration, Monterey, California, USA
- Institute of Marine Sciences, University of California, Santa Cruz, California, USA
| | | | - Dylan Pugh
- Gulf of Maine Research Institute, Portland, Maine, USA
| | - Nuno Queiroz
- Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Vairão, Portugal
- Marine Biological Association of the United Kingdom, The Laboratory, Plymouth, UK
| | - James D Scott
- NOAA Earth System Research Laboratory, Boulder, Colorado, USA
- Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, Colorado, USA
| | - Gregory B Skomal
- Massachusetts Division of Marine Fisheries, New Bedford, Massachusetts, USA
| | - David W Sims
- Marine Biological Association of the United Kingdom, The Laboratory, Plymouth, UK
- Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Southampton, UK
| | - Simon R Thorrold
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
| | - Heather Welch
- Environmental Research Division, Southwest Fisheries Science Center, National Oceanic and Atmospheric Administration, Monterey, California, USA
- Institute of Marine Sciences, University of California, Santa Cruz, California, USA
| | | | - Rebecca L Lewison
- Institute for Ecological Monitoring and Management, San Diego State University, San Diego, California, USA
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41
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Ellis-Soto D, Oliver RY, Brum-Bastos V, Demšar U, Jesmer B, Long JA, Cagnacci F, Ossi F, Queiroz N, Hindell M, Kays R, Loretto MC, Mueller T, Patchett R, Sims DW, Tucker MA, Ropert-Coudert Y, Rutz C, Jetz W. A vision for incorporating human mobility in the study of human-wildlife interactions. Nat Ecol Evol 2023; 7:1362-1372. [PMID: 37550509 DOI: 10.1038/s41559-023-02125-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 06/19/2023] [Indexed: 08/09/2023]
Abstract
As human activities increasingly shape land- and seascapes, understanding human-wildlife interactions is imperative for preserving biodiversity. Habitats are impacted not only by static modifications, such as roads, buildings and other infrastructure, but also by the dynamic movement of people and their vehicles occurring over shorter time scales. Although there is increasing realization that both components of human activity substantially affect wildlife, capturing more dynamic processes in ecological studies has proved challenging. Here we propose a conceptual framework for developing a 'dynamic human footprint' that explicitly incorporates human mobility, providing a key link between anthropogenic stressors and ecological impacts across spatiotemporal scales. Specifically, the dynamic human footprint integrates a range of metrics to fully acknowledge the time-varying nature of human activities and to enable scale-appropriate assessments of their impacts on wildlife behaviour, demography and distributions. We review existing terrestrial and marine human-mobility data products and provide a roadmap for how these could be integrated and extended to enable more comprehensive analyses of human impacts on biodiversity in the Anthropocene.
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Affiliation(s)
- Diego Ellis-Soto
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA.
- Center for Biodiversity and Global Change, Yale University, New Haven, CT, USA.
| | - Ruth Y Oliver
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA.
- Center for Biodiversity and Global Change, Yale University, New Haven, CT, USA.
- Bren School of Environmental Science and Management, University of California, Santa Barbara, CA, USA.
| | - Vanessa Brum-Bastos
- School of Geography and Sustainable Development, University of St Andrews, St Andrews, UK
- Institute of Geodesy and Geoinformatics, Wroclaw University of Environmental Sciences, Wroclaw, Poland
- School of Earth and Environment, University of Canterbury, Christchurch, New Zealand
| | - Urška Demšar
- School of Geography and Sustainable Development, University of St Andrews, St Andrews, UK
| | - Brett Jesmer
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
- Center for Biodiversity and Global Change, Yale University, New Haven, CT, USA
- Department of Fish and Wildlife Conservation, Virginia Tech, Blacksburg, VA, USA
| | - Jed A Long
- Department of Geography & Environment, Centre for Animals on the Move, Western University, London, Ontario, Canada
| | - Francesca Cagnacci
- Animal Ecology Unit, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
- National Biodiversity Future Center S.C.A.R.L., Palermo, Italy
| | - Federico Ossi
- Animal Ecology Unit, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Nuno Queiroz
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado/BIOPOLIS Program in Genomics, Biodiversity and Land Planning, Universidade do Porto, Vairão, Portugal
- Marine Biological Association, Plymouth, UK
| | - Mark Hindell
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia
- Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia
| | - Roland Kays
- North Carolina Museum of Natural Sciences, Raleigh, NC, USA
- Dept Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, USA
| | - Matthias-Claudio Loretto
- Ecosystem Dynamics and Forest Management Group, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
- Berchtesgaden National Park, Berchtesgaden, Germany
- Department of Migration, Max-Planck Institute of Animal Behavior, Radolfzell, Germany
| | - Thomas Mueller
- Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Frankfurt (Main), Germany
- Department of Biological Sciences, Goethe University, Frankfurt (Main), Germany
| | - Robert Patchett
- Centre for Biological Diversity, School of Biology, University of St Andrews, St Andrews, UK
| | - David W Sims
- Marine Biological Association, Plymouth, UK
- Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Southampton, UK
- Centre for Biological Sciences, University of Southampton, Southampton, UK
| | - Marlee A Tucker
- Department of Environmental Science, Radboud Institute for Biological and Environmental Sciences, Radboud University, Nijmegen, The Netherlands
| | - Yan Ropert-Coudert
- Centre d'Etudes Biologiques de Chizé, La Rochelle Université - CNRS, Villiers en Bois, France
| | - Christian Rutz
- Centre for Biological Diversity, School of Biology, University of St Andrews, St Andrews, UK
| | - Walter Jetz
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
- Center for Biodiversity and Global Change, Yale University, New Haven, CT, USA
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42
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Shea BD, Gallagher AJ, Bomgardner LK, Ferretti F. Quantifying longline bycatch mortality for pelagic sharks in western Pacific shark sanctuaries. SCIENCE ADVANCES 2023; 9:eadg3527. [PMID: 37585534 PMCID: PMC10431710 DOI: 10.1126/sciadv.adg3527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 07/17/2023] [Indexed: 08/18/2023]
Abstract
Marine protected areas are increasingly touted for their role in conserving large marine predators such as sharks, but their efficacy is debated. Seventeen "shark sanctuaries" have been established globally, but longline fishing continues within many such jurisdictions, leading to unknown levels of bycatch mortality levels. Using public data from Global Fishing Watch and Regional Fisheries Management Organizations, we quantified longline fishing within eight shark sanctuaries and estimated pelagic shark catch and mortality for seven pelagic shark species. Sanctuary mortality ranged from 600 individuals (Samoa) to 36,256 individuals (Federated States of Micronesia), equivalent to ~5% of hypothesized sustainable levels for blue sharks to ~40% for silky sharks, with high mortality levels in the Federated States of Micronesia, Palau, and the Marshall Islands. Unsustainable mortality rates were exceeded for silky sharks in two sanctuaries, highlighting a need for additional stock assessments and implementation of bycatch reduction measures. Big data integration workflows represent a transformative tool in fisheries management, particularly for data-poor species.
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Affiliation(s)
- Brendan D. Shea
- Department of Fish and Wildlife Conservation, Virginia Tech, Blacksburg, VA, USA
- Beneath the Waves, Herndon, VA, USA
| | - Austin J. Gallagher
- Beneath the Waves, Herndon, VA, USA
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter Cornwall Campus, Penryn, Cornwall, UK
| | | | - Francesco Ferretti
- Department of Fish and Wildlife Conservation, Virginia Tech, Blacksburg, VA, USA
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43
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Pinheiro HT, MacDonald C, Santos RG, Ali R, Bobat A, Cresswell BJ, Francini-Filho R, Freitas R, Galbraith GF, Musembi P, Phelps TA, Quimbayo JP, Quiros TEAL, Shepherd B, Stefanoudis PV, Talma S, Teixeira JB, Woodall LC, Rocha LA. Plastic pollution on the world's coral reefs. Nature 2023; 619:311-316. [PMID: 37438592 DOI: 10.1038/s41586-023-06113-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 04/21/2023] [Indexed: 07/14/2023]
Abstract
Coral reefs are losing the capacity to sustain their biological functions1. In addition to other well-known stressors, such as climatic change and overfishing1, plastic pollution is an emerging threat to coral reefs, spreading throughout reef food webs2, and increasing disease transmission and structural damage to reef organisms3. Although recognized as a global concern4, the distribution and quantity of plastics trapped in the world's coral reefs remains uncertain3. Here we survey 84 shallow and deep coral ecosystems at 25 locations across the Pacific, Atlantic and Indian ocean basins for anthropogenic macrodebris (pollution by human-generated objects larger than 5 centimetres, including plastics), performing 1,231 transects. Our results show anthropogenic debris in 77 out of the 84 reefs surveyed, including in some of Earth's most remote and near-pristine reefs, such as in uninhabited central Pacific atolls. Macroplastics represent 88% of the anthropogenic debris, and, like other debris types, peak in deeper reefs (mesophotic zones at 30-150 metres depth), with fishing activities as the main source of plastics in most areas. These findings contrast with the global pattern observed in other nearshore marine ecosystems, where macroplastic densities decrease with depth and are dominated by consumer items5. As the world moves towards a global treaty to tackle plastic pollution6, understanding its distribution and drivers provides key information to help to design the strategies needed to address this ubiquitous threat.
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Affiliation(s)
- Hudson T Pinheiro
- Department of Ichthyology, California Academy of Sciences, San Francisco, CA, USA.
- Center for Marine Biology, University of São Paulo, São Sebastião, Brazil.
| | - Chancey MacDonald
- Department of Ichthyology, California Academy of Sciences, San Francisco, CA, USA
- Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Robson G Santos
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Cidade Universitária, Maceió, Brazil
| | - Ramadhoine Ali
- Faculté des Sciences Techniques, Université des Comores, Mvouni, Comoros
| | - Ayesha Bobat
- Wildlands Conservation Trust, Pietermaritzburg, South Africa
| | - Benjamin J Cresswell
- Australian Research Council Centre of Excellence for Coral Reef Studies and College of Science and Engineering James Cook University, Townsville, Queensland, Australia
| | | | - Rui Freitas
- Instituto de Engenharia e Ciências do Mar, Universidade Técnica do Atlântico, Mindelo, Cabo Verde
| | - Gemma F Galbraith
- Australian Research Council Centre of Excellence for Coral Reef Studies and College of Science and Engineering James Cook University, Townsville, Queensland, Australia
| | - Peter Musembi
- CORDIO East Africa, Mombasa, Kenya
- Wildlife Conservation Society, Kenya Marine Program, Mombasa, Kenya
| | - Tyler A Phelps
- Department of Ichthyology, California Academy of Sciences, San Francisco, CA, USA
| | - Juan P Quimbayo
- Center for Marine Biology, University of São Paulo, São Sebastião, Brazil
- Department of Evolution, Ecology and Organismal Biology, The Ohio State University, Columbus, OH, USA
| | - T E Angela L Quiros
- Akkeshi Marine Station, Field Science Center for Northern Biosphere, Hokkaido University, Hokkaido, Japan
| | - Bart Shepherd
- Steinhart Aquarium, California Academy of Sciences, San Francisco, CA, USA
| | - Paris V Stefanoudis
- Department of Biology, University of Oxford, Oxford, UK
- Nekton Foundation, Oxford, UK
- Museum of Natural History, Oxford University, Oxford, UK
| | | | - João B Teixeira
- Departamento de Oceanografia, Universidade Federal do Espírito Santo, Vitória, Brazil
| | - Lucy C Woodall
- Department of Biology, University of Oxford, Oxford, UK
- Nekton Foundation, Oxford, UK
- Center of Ecology and Conservation, University of Exeter, Exeter, UK
| | - Luiz A Rocha
- Department of Ichthyology, California Academy of Sciences, San Francisco, CA, USA
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44
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Mendoza-Portillo V, García-De León FJ, von der Heyden S. Responses of population structure and genomic diversity to climate change and fishing pressure in a pelagic fish. GLOBAL CHANGE BIOLOGY 2023; 29:4107-4125. [PMID: 37078996 DOI: 10.1111/gcb.16732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/28/2023] [Accepted: 04/16/2023] [Indexed: 05/03/2023]
Abstract
The responses of marine species to environmental changes and anthropogenic pressures (e.g., fishing) interact with ecological and evolutionary processes that are not well understood. Knowledge of changes in the distribution range and genetic diversity of species and their populations into the future is essential for the conservation and sustainable management of resources. Almaco jack (Seriola rivoliana) is a pelagic fish with high importance to fisheries and aquaculture in the Pacific Ocean. In this study, we assessed contemporary genomic diversity and structure in loci that are putatively under selection (outlier loci) and determined their potential functions. Using a combination of genotype-environment association, spatial distribution models, and demogenetic simulations, we modeled the effects of climate change (under three different RCP scenarios) and fishing pressure on the species' geographic distribution and genomic diversity and structure to 2050 and 2100. Our results show that most of the outlier loci identified were related to biological and metabolic processes that may be associated with temperature and salinity. The contemporary genomic structure showed three populations-two in the Eastern Pacific (Cabo San Lucas and Eastern Pacific) and one in the Central Pacific (Hawaii). Future projections suggest a loss of suitable habitat and potential range contractions for most scenarios, while fishing pressure decreased population connectivity. Our results suggest that future climate change scenarios and fishing pressure will affect the genomic structure and genotypic composition of S. rivoliana and lead to loss of genomic diversity in populations distributed in the eastern-central Pacific Ocean, which could have profound effects on fisheries that depend on this resource.
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Affiliation(s)
- Verónica Mendoza-Portillo
- Laboratorio de Genética para la Conservación, Centro de Investigaciones Biológicas del Noroeste, La Paz, Mexico
| | - Francisco J García-De León
- Laboratorio de Genética para la Conservación, Centro de Investigaciones Biológicas del Noroeste, La Paz, Mexico
| | - Sophie von der Heyden
- Evolutionary Genomics Group, Department of Botany and Zoology, Stellenbosch University, Matieland, South Africa
- School of Climate Studies, Stellenbosch University, Matieland, South Africa
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45
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Garzon F, Barrientos C, Anvene RE, Mba FE, Fallabrino A, Formia A, Godley BJ, Gonder MK, Prieto CM, Ayetebe JM, Metcalfe K, Montgomery D, Nsogo J, Nze JCO, Possardt E, Salazar ER, Tiwari M, Witt MJ. Spatial ecology and conservation of leatherback turtles (Dermochelys coriacea) nesting in Bioko, Equatorial Guinea. PLoS One 2023; 18:e0286545. [PMID: 37315005 DOI: 10.1371/journal.pone.0286545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 05/18/2023] [Indexed: 06/16/2023] Open
Abstract
Bioko Island (Equatorial Guinea) hosts important nesting habitat for leatherback sea turtles, with the main nesting beaches found on the island's southern end. Nest monitoring and protection have been ongoing for more than two decades, although distribution and habitat range at sea remains to be determined. This study uses satellite telemetry to describe the movements of female leatherback turtles (n = 10) during and following the breeding season, tracking them to presumed offshore foraging habitats in the south Atlantic Ocean. Leatherback turtles spent 100% of their time during the breeding period within the Exclusive Economic Zone (EEZ) of Equatorial Guinea, with a core distribution focused on the south of Bioko Island extending up to 10 km from the coast. During this period, turtles spent less than 10% of time within the existing protected area. Extending the border of this area by 3 km offshore would lead to a greater than threefold increase in coverage of turtle distribution (29.8 ± 19.0% of time), while an expansion to 15 km offshore would provide spatial coverage for more than 50% of tracking time. Post-nesting movements traversed the territorial waters of Sao Tome and Principe (6.4%of tracking time), Brazil (0.85%), Ascension (1.8%), and Saint Helena (0.75%). The majority (70%) of tracking time was spent in areas beyond national jurisdiction (i.e. the High Seas). This study reveals that conservation benefits could be achieved by expanding existing protected areas stretching from the Bioko coastal zone, and suggests shared migratory routes and foraging space between the Bioko population and other leatherback turtle rookeries in this region.
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Affiliation(s)
- Francesco Garzon
- Hatherley Laboratories, Faculty of Health and Life Sciences, University of Exeter, Exeter, Devon, United Kingdom
| | | | - Rigoberto Esono Anvene
- Tortugas Marinas de Guinea Ecuatorial (TOMAGE), Instituto Nacional de Desarrollo Forestal y Manejo de las Areas Protegidas (INDEFOR-AP), Bata, Equatorial Guinea
| | - Feme Esono Mba
- Tortugas Marinas de Guinea Ecuatorial (TOMAGE), Instituto Nacional de Desarrollo Forestal y Manejo de las Areas Protegidas (INDEFOR-AP), Bata, Equatorial Guinea
| | - Alejandro Fallabrino
- Tortugas Marinas de Guinea Ecuatorial (TOMAGE), Instituto Nacional de Desarrollo Forestal y Manejo de las Areas Protegidas (INDEFOR-AP), Bata, Equatorial Guinea
| | - Angela Formia
- Tortugas Marinas de Guinea Ecuatorial (TOMAGE), Instituto Nacional de Desarrollo Forestal y Manejo de las Areas Protegidas (INDEFOR-AP), Bata, Equatorial Guinea
- African Aquatic Conservation Fund, Chillmark, Massachusetts, United States of America
| | - Brendan J Godley
- Centre for Ecology and Conservation, Faculty of Environment, Sustainability and Economy, University of Exeter, Penryn Campus, Cornwall, United Kingdom
| | - Mary K Gonder
- Bioko Biodiversity Protection Program, Malabo, Bioko Norte, Equatorial Guinea
- Department of Biodiversity, Earth and Environmental Science, Drexel University, Philadelphia, Pennsylvania, United States of America
| | | | | | - Kristian Metcalfe
- African Aquatic Conservation Fund, Chillmark, Massachusetts, United States of America
| | - David Montgomery
- Bioko Biodiversity Protection Program, Malabo, Bioko Norte, Equatorial Guinea
- Department of Biodiversity, Earth and Environmental Science, Drexel University, Philadelphia, Pennsylvania, United States of America
| | - Juan Nsogo
- Tortugas Marinas de Guinea Ecuatorial (TOMAGE), Instituto Nacional de Desarrollo Forestal y Manejo de las Areas Protegidas (INDEFOR-AP), Bata, Equatorial Guinea
| | - Juan-Cruz Ondo Nze
- Bioko Biodiversity Protection Program, Malabo, Bioko Norte, Equatorial Guinea
- Universidad Nacional de Guinea Ecuatorial, Malabo, Equatorial Guinea
| | - Earl Possardt
- US National Fish and Wildlife Service, Division of International Conservation, Falls Church, Virginia, United States of America
| | | | - Manjula Tiwari
- Ocean Ecology Network, Research Affiliate of NOAA-National Marine Fisheries Service, Southwest Fisheries Science Center, La Jolla, California, United States of America
| | - Matthew J Witt
- Hatherley Laboratories, Faculty of Health and Life Sciences, University of Exeter, Exeter, Devon, United Kingdom
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Favoretto F, López-Sagástegui C, Sala E, Aburto-Oropeza O. The largest fully protected marine area in North America does not harm industrial fishing. SCIENCE ADVANCES 2023; 9:eadg0709. [PMID: 37256961 DOI: 10.1126/sciadv.adg0709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 03/20/2023] [Indexed: 06/02/2023]
Abstract
Marine protected areas (MPAs) that ban fishing restore marine life within their boundaries and can also replenish nearby fisheries. However, some argue that after large MPAs are established, fishing effort is displaced to unprotected areas and economic loss is incurred by the fishing industry. We tested these assumptions by assessing the behavior and productivity of the Mexican industrial fishing fleet before and after the implementation of the largest fully protected MPA in North America (the 147,000-square kilometer Revillagigedo National Park). We found no decrease in catches and no causal link between the variation of the spatial footprint of the industrial fleet and the implementation of the MPA. Our findings add to growing evidence that well-designed MPAs benefit marine ecosystems and, in the long term, can also benefit the fisheries they support.
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Affiliation(s)
- Fabio Favoretto
- Centro para la Biodiversidad Marina y la Conservación, A.C., Calle del Pirata 420, Col. El Mezquite, La Paz, BCS, México
- Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Catalina López-Sagástegui
- Gulf of California Marine Program, Institute of Americas, UC San Diego Campus, 10111 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Enric Sala
- National Geographic Society, Washington, DC 20036, USA
| | - Octavio Aburto-Oropeza
- Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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47
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Orozco-Meléndez JF, Paneque-Gálvez J. Co-producing uncomfortable, transdisciplinary, actionable knowledges against the corporate food regime through critical science approaches. ENVIRONMENT, DEVELOPMENT AND SUSTAINABILITY 2023:1-29. [PMID: 37363027 PMCID: PMC10203682 DOI: 10.1007/s10668-023-03377-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 05/10/2023] [Indexed: 06/28/2023]
Abstract
The current corporate food regime generates some of the most challenging ecological, social, and ethical problems for humanity in its quest for sustainability and ecological justice. Different scientific disciplines have analyzed these problems in-depth, but usually from their comfort zone, i.e., without engagement with other disciplines and epistemologies. The predominance of disciplinary visions seriously limits, however, understanding the complexities of the corporate food regime, including the impacts it generates. Further, most research concerned with this food regime confronts epistemological, methodological, and political limitations to engage with the type of solutions that could lead to transitions to just sustainabilities. Here we review and integrate the findings from scientific literature focused on the ecological, social, or ethical impacts of the corporate food regime, with an emphasis on impacts that operate on a global scale. In addition, we analyze the need for critical science approaches to trigger generative processes for the co-production of uncomfortable, transdisciplinary, actionable knowledges that are fit for designing just and sustainable food regimes. Much of the evidence presented in our analysis is in tension with the interests of the corporate food regime, which fosters decision-making processes based on selective ignorance of the impacts caused by this regime. Our work provides arguments that justify the need to promote transitions to just sustainabilities in agricultural systems from multiple domains (e.g., research and development, public policies, grassroots innovations). We posit that strategies to co-design and build such transitions can emerge from the co-production of uncomfortable, transdisciplinary, actionable knowledges through critical science approaches.
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Affiliation(s)
- José Francisco Orozco-Meléndez
- Escuela Nacional de Estudios Superiores (ENES), Unidad Morelia, Universidad Nacional Autónoma de México (UNAM), Antigua Carretera a Pátzcuaro 8701, Col. Ex-Hacienda de San José de La Huerta, 58190 Morelia, Michoacán Mexico
- Posgrado en Geografía, Universidad Nacional Autónoma de México (UNAM), Antigua Carretera a Pátzcuaro 8701, Col. Ex-Hacienda de San José de La Huerta, 58190 Morelia, Michoacán Mexico
| | - Jaime Paneque-Gálvez
- Centro de Investigaciones en Geografía Ambiental (CIGA), Universidad Nacional Autónoma de México (UNAM), Antigua Carretera a Pátzcuaro 8701, Col. Ex-Hacienda de San José de La Huerta, 58190 Morelia, Michoacán Mexico
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48
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Carreiro AR, Ramos JA, Mata VA, Almeida NM, Rodrigues I, Dos Santos I, Matos DM, Araújo PM, Militão T, González-Sólis J, Paiva VH, Lopes RJ. DNA metabarcoding to assess prey overlap between tuna and seabirds in the Eastern tropical Atlantic: Implications for an ecosystem-based management. MARINE ENVIRONMENTAL RESEARCH 2023; 187:105955. [PMID: 37003079 DOI: 10.1016/j.marenvres.2023.105955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 02/08/2023] [Accepted: 03/15/2023] [Indexed: 06/19/2023]
Abstract
Overfishing has been drastically changing food webs in marine ecosystems, and it is pivotal to quantify these changes at the ecosystem level. This is especially important for ecosystems with a high diversity of top predators such as the Eastern Atlantic marine region. In this work we used high-throughput sequencing methods to describe the diet of the two most abundant tuna species, the Skipjack tuna (Katsuwonus pelamis) and the Yellowfin tuna (Thunnus albacares), highly targeted by fisheries off west Africa. We also explored prey diversity overlap between these tuna species and the seabird species breeding in Cabo Verde that are most likely to share prey preferences and suffer from bycatch, the Brown booby (Sula leucogaster) and Cape Verde shearwater (Calonectris edwardsii). Overall, the diet of both tuna species was more diverse than that of seabirds. Skipjack tuna diet was dominated by prey from lower trophic levels, such as krill, anchovies, and siphonophores, while the Yellowfin tuna diet was mainly based on epipelagic fish such as flying and halfbeak fishes. Some of the most abundant prey families detected in the Yellowfin tuna diet were shared with both seabird species, resulting in a high prey diversity overlap between this tuna species and seabirds These results have implications for the management of tuna fisheries in the Eastern Tropical Atlantic, because a large decrease of both tuna species might have cascading effects on both primary and secondary consumer levels, and the decrease of these underwater predators may have implications on the viability of tropical seabird populations.
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Affiliation(s)
- Ana Rita Carreiro
- University of Coimbra, MARE - Marine and Environmental Sciences Centre, ARNET - Aquatic Research Network, Department of Life Sciences, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal; CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal.
| | - Jaime A Ramos
- University of Coimbra, MARE - Marine and Environmental Sciences Centre, ARNET - Aquatic Research Network, Department of Life Sciences, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
| | - Vanessa A Mata
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
| | | | | | - Ivo Dos Santos
- University of Coimbra, MARE - Marine and Environmental Sciences Centre, ARNET - Aquatic Research Network, Department of Life Sciences, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
| | - Diana M Matos
- University of Coimbra, MARE - Marine and Environmental Sciences Centre, ARNET - Aquatic Research Network, Department of Life Sciences, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
| | - Pedro M Araújo
- University of Coimbra, MARE - Marine and Environmental Sciences Centre, ARNET - Aquatic Research Network, Department of Life Sciences, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal; CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
| | - Teresa Militão
- Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona (UB), 08028, Barcelona, Spain; Dept Biologia Evolutiva, Ecologia i Ciències Ambientals (BEECA), Facultat de Biología, Universitat de Barcelona (UB), 08028, Barcelona, Spain
| | - Jacob González-Sólis
- Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona (UB), 08028, Barcelona, Spain; Dept Biologia Evolutiva, Ecologia i Ciències Ambientals (BEECA), Facultat de Biología, Universitat de Barcelona (UB), 08028, Barcelona, Spain
| | - Vitor H Paiva
- University of Coimbra, MARE - Marine and Environmental Sciences Centre, ARNET - Aquatic Research Network, Department of Life Sciences, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
| | - Ricardo Jorge Lopes
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal; MHNC-UP, Natural History and Science Museum of the University of Porto, 4099-002, Porto, Portugal.
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Clare MA, Lichtschlag A, Paradis S, Barlow NLM. Assessing the impact of the global subsea telecommunications network on sedimentary organic carbon stocks. Nat Commun 2023; 14:2080. [PMID: 37045871 PMCID: PMC10097694 DOI: 10.1038/s41467-023-37854-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 03/28/2023] [Indexed: 04/14/2023] Open
Abstract
The sequestration of organic carbon in seafloor sediments plays a key role in regulating global climate; however, human activities can disturb previously-sequestered carbon stocks, potentially reducing the capacity of the ocean to store CO2. Recent studies revealed profound seafloor impacts and sedimentary carbon loss due to fishing and shipping, yet most other human activities in the ocean have been overlooked. Here, we present an assessment of organic carbon disturbance related to the globally-extensive subsea telecommunications cable network. Up to 2.82-11.26 Mt of organic carbon worldwide has been disturbed as a result of cable burial, in water depths of up to 2000 m. While orders of magnitude lower than that disturbed by bottom fishing, it is a non-trivial amount that is absent from global budgets. Future offshore developments that disturb the seafloor should consider the safeguarding of carbon stocks, across the full spectrum of Blue Economy industries.
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Affiliation(s)
- M A Clare
- Ocean Biogeoscience Research Group, National Oceanography Centre, Southampton, UK.
| | - A Lichtschlag
- Ocean Biogeoscience Research Group, National Oceanography Centre, Southampton, UK
| | - S Paradis
- Geological Institute, ETH Zürich, Zürich, Switzerland
| | - N L M Barlow
- School of Earth and Environment, University of Leeds, Leeds, UK
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50
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Iacarella JC, Burke L, Clyde G, Wicks A, Clavelle T, Dunham A, Rubidge E, Woods P. Monitoring temporal and spatial trends of illegal and legal fishing in marine conservation areas across Canada's three oceans. CONSERVATION SCIENCE AND PRACTICE 2023. [DOI: 10.1111/csp2.12919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023] Open
Affiliation(s)
- Josephine C. Iacarella
- Fisheries and Oceans Canada, Cultus Lake Labs Cultus Lake British Columbia V2R 5B6 Canada
| | - Lily Burke
- Fisheries and Oceans Canada Institute of Ocean Sciences Sidney British Columbia V8L 4B2 Canada
| | - Georgia Clyde
- Fisheries and Oceans Canada Institute of Ocean Sciences Sidney British Columbia V8L 4B2 Canada
| | - Adam Wicks
- Ebb and Flow Analytics 199 Petworth Drive Victoria British Columbia V9E 1J4 Canada
| | - Tyler Clavelle
- Global Fishing Watch 1025 Connecticut Avenue, NW Suite 200 Washington DC 20036 USA
| | - Anya Dunham
- Fisheries and Oceans Canada Pacific Biological Station Nanaimo British Columbia V9T 6N7 Canada
| | - Emily Rubidge
- Fisheries and Oceans Canada Institute of Ocean Sciences Sidney British Columbia V8L 4B2 Canada
| | - Paul Woods
- Global Fishing Watch 1025 Connecticut Avenue, NW Suite 200 Washington DC 20036 USA
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