1
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Alabia ID, Molinos JG, Hirata T, Narita D, Hirawake T. Future redistribution of fishery resources suggests biological and economic trade-offs according to the severity of the emission scenario. PLoS One 2024; 19:e0304718. [PMID: 38843266 PMCID: PMC11156307 DOI: 10.1371/journal.pone.0304718] [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: 12/15/2023] [Accepted: 05/16/2024] [Indexed: 06/09/2024] Open
Abstract
Climate change is anticipated to have long-term and pervasive effects on marine ecosystems, with cascading consequences to many ocean-reliant sectors. For the marine fisheries sector, these impacts can be further influenced by future socio-economic and political factors. This raises the need for robust projections to capture the range of potential biological and economic risks and opportunities posed by climate change to marine fisheries. Here, we project future changes in the abundance of eight commercially important fish and crab species in the eastern Bering Sea and Chukchi Sea under different CMIP6 Shared Socioeconomic Pathways (SSPs) leading to contrasting future (2021-2100) scenarios of warming, sea ice concentration, and net primary production. Our results revealed contrasting patterns of abundance and distribution changes across species, time periods and climate scenarios, highlighting potential winners and losers under future climate change. In particular, the least changes in future species abundance and distribution were observed under SSP126. However, under the extreme scenario (SSP585), projected Pacific cod and snow crab abundances increased and decreased, respectively, with concurrent zonal and meridional future shifts in their centers of gravity. Importantly, projected changes in species abundance suggest that fishing at the same distance from the current major port in the Bering Sea (i.e., Dutch Harbor) could yield declining catches for highly valuable fisheries (e.g., Pacific cod and snow crab) under SSP585. This is driven by strong decreases in future catches of highly valuable species despite minimal declines in maximum catch potential, which are dominated by less valuable taxa. Hence, our findings show that projected changes in abundance and shifting distributions could have important biological and economic impacts on the productivity of commercial and subsistence fisheries in the eastern Bering and Chukchi seas, with potential implications for the effective management of transboundary resources.
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Affiliation(s)
- Irene D. Alabia
- Arctic Research Center, Hokkaido University, Sapporo, Hokkaido, Japan
| | | | - Takafumi Hirata
- Arctic Research Center, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Daiju Narita
- Graduate School and College of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Toru Hirawake
- National Institute of Polar Research, The Graduate University for Advanced Studies, SOKENDAI, Tachikawa, Tokyo, Japan
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2
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Ullah H, Fordham DA, Goldenberg SU, Nagelkerken I. Combining mesocosms with models reveals effects of global warming and ocean acidification on a temperate marine ecosystem. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2024; 34:e2977. [PMID: 38706047 DOI: 10.1002/eap.2977] [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: 11/02/2023] [Accepted: 12/27/2023] [Indexed: 05/07/2024]
Abstract
Ocean warming and species exploitation have already caused large-scale reorganization of biological communities across the world. Accurate projections of future biodiversity change require a comprehensive understanding of how entire communities respond to global change. We combined a time-dynamic integrated food web modeling approach (Ecosim) with previous data from community-level mesocosm experiments to determine the independent and combined effects of ocean warming, ocean acidification and fisheries exploitation on a well-managed temperate coastal ecosystem. The mesocosm parameters enabled important physiological and behavioral responses to climate stressors to be projected for trophic levels ranging from primary producers to top predators, including sharks. Through model simulations, we show that under sustainable rates of fisheries exploitation, near-future warming or ocean acidification in isolation could benefit species biomass at higher trophic levels (e.g., mammals, birds, and demersal finfish) in their current climate ranges, with the exception of small pelagic fishes. However, under warming and acidification combined, biomass increases at higher trophic levels will be lower or absent, while in the longer term reduced productivity of prey species is unlikely to support the increased biomass at the top of the food web. We also show that increases in exploitation will suppress any positive effects of human-driven climate change, causing individual species biomass to decrease at higher trophic levels. Nevertheless, total future potential biomass of some fisheries species in temperate areas might remain high, particularly under acidification, because unharvested opportunistic species will likely benefit from decreased competition and show an increase in biomass. Ecological indicators of species composition such as the Shannon diversity index decline under all climate change scenarios, suggesting a trade-off between biomass gain and functional diversity. By coupling parameters from multilevel mesocosm food web experiments with dynamic food web models, we were able to simulate the generative mechanisms that drive complex responses of temperate marine ecosystems to global change. This approach, which blends theory with experimental data, provides new prospects for forecasting climate-driven biodiversity change and its effects on ecosystem processes.
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Affiliation(s)
- Hadayet Ullah
- Southern Seas Ecology Laboratories, School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia
| | - Damien A Fordham
- The Environment Institute, School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, Australia
- Center for Macroecology, Evolution, and Climate, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Silvan U Goldenberg
- Southern Seas Ecology Laboratories, School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia
- GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany
| | - Ivan Nagelkerken
- Southern Seas Ecology Laboratories, School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia
- The Environment Institute, School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, Australia
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3
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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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4
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Huang M, Chen Y, Zhou W, Wei F. Assessing the response of marine fish communities to climate change and fishing. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2024:e14291. [PMID: 38745485 DOI: 10.1111/cobi.14291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/21/2024] [Accepted: 02/28/2024] [Indexed: 05/16/2024]
Abstract
Globally, marine fish communities are being altered by climate change and human disturbances. We examined data on global marine fish communities to assess changes in community-weighted mean temperature affinity (i.e., mean temperatures within geographic ranges), maximum length, and trophic levels, which, respectively, represent the physiological, morphological, and trophic characteristics of marine fish communities. Then, we explored the influence of climate change and fishing on these characteristics because of their long-term role in shaping fish communities, especially their interactive effects. We employed spatial linear mixed models to investigate their impacts on community-weighted mean trait values and on abundance of different fish lengths and trophic groups. Globally, we observed an initial increasing trend in the temperature affinity of marine fish communities, whereas the weighted mean length and trophic levels of fish communities showed a declining trend. However, these shift trends were not significant, likely due to the large variation in midlatitude communities. Fishing pressure increased fish communities' temperature affinity in regions experiencing climate warming. Furthermore, climate warming was associated with an increase in weighted mean length and trophic levels of fish communities. Low climate baseline temperature appeared to mitigate the effect of climate warming on temperature affinity and trophic levels. The effect of climate warming on the relative abundance of different trophic classes and size classes both exhibited a nonlinear pattern. The small and relatively large fish species may benefit from climate warming, whereas the medium and largest size groups may be disadvantaged. Our results highlight the urgency of establishing stepping-stone marine protected areas to facilitate the migration of fishes to habitats in a warming ocean. Moreover, reducing human disturbance is crucial to mitigate rapid tropicalization, particularly in vulnerable temperate regions.
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Affiliation(s)
- Mingpan Huang
- Center for Evolution and Conservation Biology, Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- CAS Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Yiting Chen
- Center for Evolution and Conservation Biology, Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- Department of Ocean Science, Hong Kong University of Science and Technology, Hong Kong, China
| | - Wenliang Zhou
- Center for Evolution and Conservation Biology, Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Fuwen Wei
- Center for Evolution and Conservation Biology, Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- CAS Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Jiangxi Key Laboratory of Conservation Biology, College of Forestry, Jiangxi Agricultural University, Nanchang, China
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5
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Lenoir J, Comte L. Rapid range shifters show unexpected population dynamics. Nat Ecol Evol 2024; 8:850-851. [PMID: 38459375 DOI: 10.1038/s41559-024-02354-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2024]
Affiliation(s)
- Jonathan Lenoir
- UMR CNRS 7058 'Ecologie et Dynamique des Systèmes Anthropisés' (EDYSAN), Université de Picardie Jules Verne, Amiens, France.
| | - Lise Comte
- Conservation Science Partners, Inc., Truckee, CA, USA
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6
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Franklin PA, Bašić T, Davison PI, Dunkley K, Ellis J, Gangal M, González-Ferreras AM, Gutmann Roberts C, Hunt G, Joyce D, Klöcker CA, Mawer R, Rittweg T, Stoilova V, Gutowsky LFG. Aquatic connectivity: challenges and solutions in a changing climate. JOURNAL OF FISH BIOLOGY 2024. [PMID: 38584261 DOI: 10.1111/jfb.15727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/22/2024] [Accepted: 02/27/2024] [Indexed: 04/09/2024]
Abstract
The challenge of managing aquatic connectivity in a changing climate is exacerbated in the presence of additional anthropogenic stressors, social factors, and economic drivers. Here we discuss these issues in the context of structural and functional connectivity for aquatic biodiversity, specifically fish, in both the freshwater and marine realms. We posit that adaptive management strategies that consider shifting baselines and the socio-ecological implications of climate change will be required to achieve management objectives. The role of renewable energy expansion, particularly hydropower, is critically examined for its impact on connectivity. We advocate for strategic spatial planning that incorporates nature-positive solutions, ensuring climate mitigation efforts are harmonized with biodiversity conservation. We underscore the urgency of integrating robust scientific modelling with stakeholder values to define clear, adaptive management objectives. Finally, we call for innovative monitoring and predictive decision-making tools to navigate the uncertainties inherent in a changing climate, with the goal of ensuring the resilience and sustainability of aquatic ecosystems.
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Affiliation(s)
- Paul A Franklin
- National Institute of Water & Atmospheric Research, Hamilton, New Zealand
| | - Tea Bašić
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK
| | - Phil I Davison
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK
| | - Katie Dunkley
- Christ's College, University of Cambridge, Cambridge, UK
- Department of Zoology, University of Cambridge, Cambridge, UK
| | - Jonathan Ellis
- School of Biological Sciences, University of Aberdeen, Aberdeen, UK
| | - Mayuresh Gangal
- Manipal Academy of Higher Education, Manipal, India
- Nature Conservation Foundation, Mysore, India
| | - Alexia M González-Ferreras
- IHCantabria - Instituto de Hidráulica Ambiental de la Universidad de Cantabria. C/Isabel Torres 15, Santander, Spain
- School of Life Sciences, University of Essex, Colchester, UK
| | | | - Georgina Hunt
- School of Biological Sciences, University of Aberdeen, Aberdeen, UK
| | - Domino Joyce
- Biological Sciences, School of Natural Sciences, University of Hull, Hull, UK
| | - C Antonia Klöcker
- Institute of Marine Research, Tromsø, Norway
- Department of Biosciences, University of Oslo, Oslo, Norway
| | - Rachel Mawer
- Department of Animal Sciences and Aquatic Ecology, Ghent University, Ghent, Belgium
| | - Timo Rittweg
- Leibniz Institute of Freshwater Ecology and Inland Fisheries Berlin, Berlin, Germany
- Division of Integrative Fisheries Management, Faculty of Life Sciences, Humboldt-Universität zu Berlin, Unter den Linden, Berlin, Germany
| | - Velizara Stoilova
- Department of Environmental and Life Sciences, Karlstad University, Karlstad, Sweden
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7
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Gauzens B, Rosenbaum B, Kalinkat G, Boy T, Jochum M, Kortsch S, O’Gorman EJ, Brose U. Flexible foraging behaviour increases predator vulnerability to climate change. NATURE CLIMATE CHANGE 2024; 14:387-392. [PMID: 38617202 PMCID: PMC11006620 DOI: 10.1038/s41558-024-01946-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 02/01/2024] [Indexed: 04/16/2024]
Abstract
Higher temperatures are expected to reduce species coexistence by increasing energetic demands. However, flexible foraging behaviour could balance this effect by allowing predators to target specific prey species to maximize their energy intake, according to principles of optimal foraging theory. Here we test these assumptions using a large dataset comprising 2,487 stomach contents from six fish species with different feeding strategies, sampled across environments with varying prey availability over 12 years in Kiel Bay (Baltic Sea). Our results show that foraging shifts from trait- to density-dependent prey selectivity in warmer and more productive environments. This behavioural change leads to lower consumption efficiency at higher temperature as fish select more abundant but less energetically rewarding prey, thereby undermining species persistence and biodiversity. By integrating this behaviour into dynamic food web models, our study reveals that flexible foraging leads to lower species coexistence and biodiversity in communities under global warming.
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Affiliation(s)
- Benoit Gauzens
- EcoNetLab, German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biodiversity, Friedrich Schiller University Jena, Jena, Germany
| | - Benjamin Rosenbaum
- EcoNetLab, German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biodiversity, Friedrich Schiller University Jena, Jena, Germany
| | - Gregor Kalinkat
- Department of Community and Ecosystem Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany
| | - Thomas Boy
- EcoNetLab, German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biodiversity, Friedrich Schiller University Jena, Jena, Germany
| | - Malte Jochum
- Experimental Interaction Ecology, German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig, Leipzig, Germany
- Institute of Biology, Leipzig University, Leipzig, Germany
- Department of Global Change Ecology, Biocenter, University of Würzburg, Würzburg, Germany
| | - Susanne Kortsch
- Tvärminne Zoological Station, University of Helsinki, Hanko, Finland
| | - Eoin J. O’Gorman
- School of Life Sciences, University of Essex, Wivenhoe Park, Colchester, UK
| | - Ulrich Brose
- EcoNetLab, German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biodiversity, Friedrich Schiller University Jena, Jena, Germany
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8
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Zhao A, Zhong X, Xu H, Xu G. Continuous warming shifts the community pattern of periphytic protozoan fauna in marine environments. MARINE POLLUTION BULLETIN 2024; 199:116016. [PMID: 38181473 DOI: 10.1016/j.marpolbul.2023.116016] [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: 10/05/2023] [Revised: 12/11/2023] [Accepted: 12/28/2023] [Indexed: 01/07/2024]
Abstract
Protozoan fauna is playing an important role in the functioning of microbial food webs by transferring the flux of material and energy from low to high tropic levels in marine ecosystems. To assess effects of elevated temperature on the marine ecosystem, periphytic protozoan communities were used as the test microbial fauna, and were incubated in a temperature-controlled circulation system in a successive temperature gradient of 22 (control), 25, 28, 31 and 34 °C. The results showed that: (1) the test microbial fauna was shifted in both species composition and community structure; (2) the average taxonomic distinctness represented a clear decreasing trend, (3) while the variation in taxonomic distinctness significantly increased with increase of water temperature; and (4) the community pattern was significantly departed from an expectation when temperature increased by 12 °C. These results suggested that Protozoa may be used as a useful bioindicator of global warming in marine ecosystems.
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Affiliation(s)
- Anqi Zhao
- Laboratory of Microbial Ecology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Xiaoxiao Zhong
- College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Henglong Xu
- Laboratory of Microbial Ecology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| | - Guangjian Xu
- College of Environment and Safety Engineering, Qingdao University of Science & Technology, Qingdao 266042, China.
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9
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Kindsvater HK, Juan‐Jordá M, Dulvy NK, Horswill C, Matthiopoulos J, Mangel M. Size-dependence of food intake and mortality interact with temperature and seasonality to drive diversity in fish life histories. Evol Appl 2024; 17:e13646. [PMID: 38333556 PMCID: PMC10848883 DOI: 10.1111/eva.13646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 12/06/2023] [Accepted: 01/05/2024] [Indexed: 02/10/2024] Open
Abstract
Understanding how growth and reproduction will adapt to changing environmental conditions is a fundamental question in evolutionary ecology, but predicting the responses of specific taxa is challenging. Analyses of the physiological effects of climate change upon life history evolution rarely consider alternative hypothesized mechanisms, such as size-dependent foraging and the risk of predation, simultaneously shaping optimal growth patterns. To test for interactions between these mechanisms, we embedded a state-dependent energetic model in an ecosystem size-spectrum to ask whether prey availability (foraging) and risk of predation experienced by individual fish can explain observed diversity in life histories of fishes. We found that asymptotic growth emerged from size-based foraging and reproductive and mortality patterns in the context of ecosystem food web interactions. While more productive ecosystems led to larger body sizes, the effects of temperature on metabolic costs had only small effects on size. To validate our model, we ran it for abiotic scenarios corresponding to the ecological lifestyles of three tuna species, considering environments that included seasonal variation in temperature. We successfully predicted realistic patterns of growth, reproduction, and mortality of all three tuna species. We found that individuals grew larger when environmental conditions varied seasonally, and spawning was restricted to part of the year (corresponding to their migration from temperate to tropical waters). Growing larger was advantageous because foraging and spawning opportunities were seasonally constrained. This mechanism could explain the evolution of gigantism in temperate tunas. Our approach addresses variation in food availability and individual risk as well as metabolic processes and offers a promising approach to understand fish life-history responses to changing ocean conditions.
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Affiliation(s)
- Holly K. Kindsvater
- Department of Fish and Wildlife ConservationVirginia Polytechnic Institute and State UniversityBlacksburgVirginiaUSA
| | - Maria‐José Juan‐Jordá
- Earth to Ocean Research Group, Department of Biological SciencesSimon Fraser UniversityBurnabyBritish ColumbiaCanada
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA)GipuzkoaSpain
- Instituto Español de Oceanografía (IEO‐CSIC), Centro Oceanográfico de MadridMadridSpain
| | - Nicholas K. Dulvy
- Earth to Ocean Research Group, Department of Biological SciencesSimon Fraser UniversityBurnabyBritish ColumbiaCanada
| | - Cat Horswill
- ZSL Institute of ZoologyLondonUK
- Centre for Biodiversity and Environmental Research, Department of Genetics, Evolution and EnvironmentUniversity College LondonLondonUK
| | - Jason Matthiopoulos
- Institute of Biodiversity, One Health and Veterinary MedicineUniversity of GlasgowGlasgowUK
| | - Marc Mangel
- Theoretical Ecology Group, Department of BiologyUniversity of BergenBergenNorway
- Institute of Marine Sciences and Department of Applied Mathematics and StatisticsUniversity of CaliforniaSanta CruzCaliforniaUSA
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10
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Acquafredda M, Guo X, Munroe D. Transcriptomic Response of the Atlantic Surfclam (Spisula solidissima) to Acute Heat Stress. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2024; 26:149-168. [PMID: 38240954 PMCID: PMC10869415 DOI: 10.1007/s10126-024-10285-0] [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: 11/10/2023] [Accepted: 01/04/2024] [Indexed: 02/16/2024]
Abstract
There is clear evidence that the oceans are warming due to anthropogenic climate change, and the northeastern coast of USA contains some of the fastest warming areas. This warming is projected to continue with serious biological and social ramifications for fisheries and aquaculture. One species particularly vulnerable to warming is the Atlantic surfclam (Spisula solidissima). The surfclam is a critically important species, linking marine food webs and supporting a productive, lucrative, and sustainable fishery. The surfclam is also emerging as an attractive candidate for aquaculture diversification, but the warming of shallow coastal farms threatens the expansion of surfclam aquaculture. Little is known about the adaptive potential of surfclams to cope with ocean warming. In this study, the surfclam transcriptome under heat stress was examined. Two groups of surfclams were subjected to heat stress to assess how artificial selection may alter gene expression. One group of clams had been selected for greater heat tolerance (HS) and the other was composed of random control clams (RC). After a 6-h exposure to 16 or 29 °C, gill transcriptome expression profiles of the four temperature/group combinations were determined by RNA sequencing and compared. When surfclams experienced heat stress, they exhibited upregulation of heat shock proteins (HSPs), inhibitors of apoptosis (IAPs), and other stress-response related genes. RC clams differentially expressed 1.7 times more genes than HS clams, yet HS clams had a stronger response of key stress response genes, including HSPs, IAPs, and genes involved with mitigating oxidative stress. The findings imply that the HS clams have a more effective response to heat stress after undergoing the initial selection event due to genetic differences created by the selection, epigenetic memory of the first heat shock, or both. This work provides insights into how surfclams adapt to heat stress and should inform future breeding programs that attempt to breed surfclam for greater heat tolerance, and ultimately bring greater resiliency to shellfish farms.
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Affiliation(s)
- Michael Acquafredda
- Haskin Shellfish Research Laboratory, Department of Marine and Coastal Sciences, Rutgers University, 6959 Miller Avenue, Port Norris, NJ, 08349, USA.
| | - Ximing Guo
- Haskin Shellfish Research Laboratory, Department of Marine and Coastal Sciences, Rutgers University, 6959 Miller Avenue, Port Norris, NJ, 08349, USA
| | - Daphne Munroe
- Haskin Shellfish Research Laboratory, Department of Marine and Coastal Sciences, Rutgers University, 6959 Miller Avenue, Port Norris, NJ, 08349, USA
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11
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Li Y, Sun M, Yang X, Yang M, Kleisner KM, Mills KE, Tang Y, Du F, Qiu Y, Ren Y, Chen Y. Social-ecological vulnerability and risk of China's marine capture fisheries to climate change. Proc Natl Acad Sci U S A 2024; 121:e2313773120. [PMID: 38147648 PMCID: PMC10769861 DOI: 10.1073/pnas.2313773120] [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: 08/10/2023] [Accepted: 11/18/2023] [Indexed: 12/28/2023] Open
Abstract
Climate change is a new disrupter to global fisheries systems and their governance frameworks. It poses a pressing management challenge, particularly in China, which is renowned as the world's largest fishing country and seafood producer. As climate change continues to intensify in the region and climate awareness grows within the country's national policy, the need to understand China's fisheries' resilience to the escalating climate crisis becomes paramount. In this study, we conduct an interdisciplinary analysis to assess the vulnerability and risk of China's marine capture fisheries in response to climate change. This study employs a spatially explicit, indicator-based approach with a coupled social-ecological framework, focusing on 67 species and 11 coastal regions. By integrating diverse sets of climatic, ecological, economic, societal, and governance indicators and information, we elucidate the factors that could hinder climate adaptation, including a limited understanding of fish early life stages, uncertainty in seafood production, unequal allocation and accessibility of resources, and inadequate consideration of inclusive governance and adaptive management. Our results show that species, which have managed to survive the stress of overfishing, demonstrate a remarkable ability to adapt to climate change. However, collapsing stocks such as large yellow croaker face a high risk due to the synergistic effects of inherent biological traits and external management interventions. We emphasize the imperative to build institutional, scientific, and social capacity to support fisheries adaptation. The scientific insights provided by this study can inform fisheries management decisions and promote the operationalization of climate-resilient fisheries in China and other regions.
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Affiliation(s)
- Yunzhou Li
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY11794
- Institute for Advanced Computational Science, Stony Brook University, Stony Brook, NY11794
| | - Ming Sun
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY11794
- Institute for Advanced Computational Science, Stony Brook University, Stony Brook, NY11794
| | - Xiangyan Yang
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY11794
- Institute for Advanced Computational Science, Stony Brook University, Stony Brook, NY11794
| | - Molin Yang
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY11794
| | | | | | - Yi Tang
- College of Marine Culture and Law, Shanghai Ocean University, Shanghai201306, China
| | - Feiyan Du
- South China Sea Fisheries Research Institute, Chinese Academy of Fisheries Sciences, Guangzhou510301, China
| | - Yongsong Qiu
- South China Sea Fisheries Research Institute, Chinese Academy of Fisheries Sciences, Guangzhou510301, China
| | - Yiping Ren
- College of Fisheries, Ocean University of China, Qingdao266003, China
| | - Yong Chen
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY11794
- Institute for Advanced Computational Science, Stony Brook University, Stony Brook, NY11794
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12
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Bandara RMWJ, Curchitser E, Pinsky ML. The importance of oxygen for explaining rapid shifts in a marine fish. GLOBAL CHANGE BIOLOGY 2024; 30:e17008. [PMID: 37943111 DOI: 10.1111/gcb.17008] [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: 02/28/2023] [Revised: 09/07/2023] [Accepted: 09/27/2023] [Indexed: 11/10/2023]
Abstract
Large-scale shifts in marine species biogeography have been a notable impact of climate change. An effective explanation of what drives these species shifts, as well as accurate predictions of where they might move, is crucial to effectively managing these natural resources and conserving biodiversity. While temperature has been implicated as a major driver of these shifts, physiological processes suggest that oxygen, prey, and other factors should also play important roles. We expanded upon previous temperature-based distribution models by testing whether oxygen, food web productivity, salinity, and scope for metabolic activity (the Metabolic Index) better explained the changing biogeography of Black Sea Bass (Centropristis striata) in the Northeast US. This species has been expanding further north over the past 15 years. We found that oxygen improved model performance beyond a simple consideration of temperature (ΔAIC = 799, ΔTSS = 0.015), with additional contributions from prey and salinity. However, the Metabolic Index did not substantially increase model performance relative to temperature and oxygen (ΔAIC = 0.63, ΔTSS = 0.0002). Marine species are sensitive to oxygen, and we encourage researchers to use ocean biogeochemical hindcast and forecast products to better understand marine biogeographic changes.
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Affiliation(s)
| | - Enrique Curchitser
- Department of Environmental Sciences, Rutgers University, New Brunswick, New Jersey, USA
| | - Malin L Pinsky
- Graduate Program in Ecology and Evolution, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, New Brunswick, New Jersey, USA
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13
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Goto D. Transient demographic dynamics of recovering fish populations shaped by past climate variability, harvest, and management. GLOBAL CHANGE BIOLOGY 2023; 29:6018-6039. [PMID: 37655646 DOI: 10.1111/gcb.16922] [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: 03/21/2023] [Revised: 07/16/2023] [Accepted: 07/30/2023] [Indexed: 09/02/2023]
Abstract
Large-scale commercial harvesting and climate-induced fluctuations in ocean properties shape the dynamics of marine populations as interdependent drivers at varied timescales. Persistent selective removals of larger, older members of a population can distort its demographic structure, eroding resilience to fluctuations in habitat conditions and thus amplifying volatility in transient dynamics. Many historically depleted marine fish stocks have begun showing signs of recovery in recent decades following the implementation of stricter management measures. But these interventions coincide with accelerated changes in the oceans triggered by increasingly warmer, more variable climates. Applying multilevel models to annual estimates of demographic metrics of 38 stocks comprising 11 species across seven northeast Atlantic ecoregions, this study explores how time-varying local and regional climates contributed to the transient dynamics of recovering populations exposed to variable fishing pressures moderated by management actions. Analyses reveal that progressive reductions in fishing pressure and shifting climate conditions discontinuously shaped rebuilding patterns of the stocks through restorations of maternal demographic structure (reversing age truncation) and reproductive capacity. As the survival rate and demographic structure of reproductive fish improved, transient growth became less sensitive to variability in recruitment and juvenile survival and more to that in adult survival. As the biomass of reproductive fish rose, recruitment success also became increasingly regulated by density-dependent processes involving higher numbers of older fish. When reductions in fishing pressure were insufficient or delayed, however, stocks became further depleted, with more eroded demographic structures. Although warmer local climates in spawning seasons promoted recruitment success in some ecoregions, changing climates in recent decades began adversely affecting reproductive performances overall, amplifying sensitivities to recruitment variability. These shared patterns underscore the value of demographic transients in developing robust strategies for managing marine resources. Such strategies could form the foundation for effective applications of adaptive measures resilient to future environmental change.
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Affiliation(s)
- Daisuke Goto
- Institute of Marine Research, Bergen, Norway
- Department of Aquatic Resources, Swedish University of Agricultural Sciences, Drottningholm, Sweden
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14
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Cheung WWL, Maire E, Oyinlola MA, Robinson JPW, Graham NAJ, Lam VWY, MacNeil MA, Hicks CC. Climate change exacerbates nutrient disparities from seafood. NATURE CLIMATE CHANGE 2023; 13:1242-1249. [PMID: 37927330 PMCID: PMC10624626 DOI: 10.1038/s41558-023-01822-1] [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: 11/26/2022] [Accepted: 08/24/2023] [Indexed: 11/07/2023]
Abstract
Seafood is an important source of bioavailable micronutrients supporting human health, yet it is unclear how micronutrient production has changed in the past or how climate change will influence its availability. Here combining reconstructed fisheries databases and predictive models, we assess nutrient availability from fisheries and mariculture in the past and project their futures under climate change. Since the 1990s, availabilities of iron, calcium and omega-3 from seafood for direct human consumption have increased but stagnated for protein. Under climate change, nutrient availability is projected to decrease disproportionately in tropical low-income countries that are already highly dependent on seafood-derived nutrients. At 4 oC of warming, nutrient availability is projected to decline by ~30% by 2100 in low income countries, while at 1.5-2.0 oC warming, decreases are projected to be ~10%. We demonstrate the importance of effective mitigation to support nutritional security of vulnerable nations and global health equity.
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Affiliation(s)
- William W. L. Cheung
- Changing Ocean Research Unit, Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia Canada
| | - Eva Maire
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Muhammed A. Oyinlola
- Changing Ocean Research Unit, Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia Canada
| | | | | | - Vicky W. Y. Lam
- Changing Ocean Research Unit, Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia Canada
| | - M. Aaron MacNeil
- Ocean Frontier Institute, Department of Biology, Dalhousie University, Halifax, Nova Scotia Canada
- Department of Mathematics and Statistics, Dalhousie University, Halifax, Nova Scotia Canada
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15
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Valente S, Moro S, Di Lorenzo M, Milisenda G, Maiorano L, Colloca F. Mediterranean fish communities are struggling to adapt to global warming. Evidence from the western coast of Italy. MARINE ENVIRONMENTAL RESEARCH 2023; 191:106176. [PMID: 37716279 DOI: 10.1016/j.marenvres.2023.106176] [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: 07/21/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/18/2023]
Abstract
Climate change has significant impacts on marine ecosystems, resulting in disruptions in biological interactions, shifts in community composition, and changes in the physiology of fish and other marine organisms. In this study conducted in the central Mediterranean Sea, the mean temperature of the catch (MTC) was employed as an indicator to investigate the climatological factors influencing the fish community. The MTC, which utilizes species-preferred temperatures, was calculated using bottom temperature (BT) data weighted against scientific catches. The estimated MTC increasing rates were 0.01 °C year-1 for the entire community, 0.017 °C year-1 for the shelf break, and 0.004 °C year-1 for the continental slope assemblage. We found that MTC is increasing at a lower rate compared to BT, suggesting a progressive under-adaptation of the fish community that seems not fully able to keep up with the ongoing pace of warming. The study identified sea surface temperature and bottom temperature as key drivers of changes in fish community composition. Notably, the fish community composition exhibited drastic changes over the studied period, and we suggest that the MTC can be a useful index to monitor such changes within the context of the EU's climate change adaptation strategy.
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Affiliation(s)
- Salvatore Valente
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, via Po' 25c, 00189, Rome, Italy; Department of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Rome, Italy.
| | - Stefano Moro
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, via Po' 25c, 00189, Rome, Italy
| | - Manfredi Di Lorenzo
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Lungomare Cristoforo Colombo, I-90149, Palermo, Italy
| | - Giacomo Milisenda
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Lungomare Cristoforo Colombo, I-90149, Palermo, Italy
| | - Luigi Maiorano
- Department of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Rome, Italy
| | - Francesco Colloca
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, via Po' 25c, 00189, Rome, Italy
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16
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Smith JG, Free CM, Lopazanski C, Brun J, Anderson CR, Carr MH, Claudet J, Dugan JE, Eurich JG, Francis TB, Hamilton SL, Mouillot D, Raimondi PT, Starr RM, Ziegler SL, Nickols KJ, Caselle JE. A marine protected area network does not confer community structure resilience to a marine heatwave across coastal ecosystems. GLOBAL CHANGE BIOLOGY 2023; 29:5634-5651. [PMID: 37439293 DOI: 10.1111/gcb.16862] [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: 04/20/2023] [Revised: 06/21/2023] [Accepted: 06/21/2023] [Indexed: 07/14/2023]
Abstract
Marine protected areas (MPAs) have gained attention as a conservation tool for enhancing ecosystem resilience to climate change. However, empirical evidence explicitly linking MPAs to enhanced ecological resilience is limited and mixed. To better understand whether MPAs can buffer climate impacts, we tested the resistance and recovery of marine communities to the 2014-2016 Northeast Pacific heatwave in the largest scientifically designed MPA network in the world off the coast of California, United States. The network consists of 124 MPAs (48 no-take state marine reserves, and 76 partial-take or special regulation conservation areas) implemented at different times, with full implementation completed in 2012. We compared fish, benthic invertebrate, and macroalgal community structure inside and outside of 13 no-take MPAs across rocky intertidal, kelp forest, shallow reef, and deep reef nearshore habitats in California's Central Coast region from 2007 to 2020. We also explored whether MPA features, including age, size, depth, proportion rock, historic fishing pressure, habitat diversity and richness, connectivity, and fish biomass response ratios (proxy for ecological performance), conferred climate resilience for kelp forest and rocky intertidal habitats spanning 28 MPAs across the full network. Ecological communities dramatically shifted due to the marine heatwave across all four nearshore habitats, and MPAs did not facilitate habitat-wide resistance or recovery. Only in protected rocky intertidal habitats did community structure significantly resist marine heatwave impacts. Community shifts were associated with a pronounced decline in the relative proportion of cold water species and an increase in warm water species. MPA features did not explain resistance or recovery to the marine heatwave. Collectively, our findings suggest that MPAs have limited ability to mitigate the impacts of marine heatwaves on community structure. Given that mechanisms of resilience to climate perturbations are complex, there is a clear need to expand assessments of ecosystem-wide consequences resulting from acute climate-driven perturbations, and the potential role of regulatory protection in mitigating community structure changes.
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Affiliation(s)
- Joshua G Smith
- National Center for Ecological Analysis and Synthesis, University of California, Santa Barbara, Santa Barbara, California, USA
- Conservation and Science Division, Monterey Bay Aquarium, Monterey, California, USA
| | - Christopher M Free
- Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, California, USA
- Marine Science Institute, University of California, Santa Barbara, Santa Barbara, California, USA
| | - Cori Lopazanski
- National Center for Ecological Analysis and Synthesis, University of California, Santa Barbara, Santa Barbara, California, USA
- Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, California, USA
| | - Julien Brun
- National Center for Ecological Analysis and Synthesis, University of California, Santa Barbara, Santa Barbara, California, USA
| | - Clarissa R Anderson
- Scripps Institution of Oceanography/Southern California Coastal Ocean Observing System, University of California, San Diego, La Jolla, California, USA
| | - Mark H Carr
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, Santa Cruz, California, USA
| | - Joachim Claudet
- National Center for Scientific Research, PSL Université Paris, CRIOBE, CNRS-EPHE-UPVD, Paris, France
| | - Jenifer E Dugan
- Marine Science Institute, University of California, Santa Barbara, Santa Barbara, California, USA
| | - Jacob G Eurich
- National Center for Ecological Analysis and Synthesis, University of California, Santa Barbara, Santa Barbara, California, USA
- Environmental Defense Fund, Santa Barbara, California, USA
| | - Tessa B Francis
- Puget Sound Institute, University of Washington, Tacoma, Washington, USA
| | - Scott L Hamilton
- Moss Landing Marine Laboratories, San Jose State University, Moss Landing, California, USA
| | - David Mouillot
- MARBEC, University of Montpellier, CNRS, IFREMER, IRD, Montpellier, France
- Institut Universitaire de France (IUF), Paris, France
| | - Peter T Raimondi
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, Santa Cruz, California, USA
| | - Richard M Starr
- Moss Landing Marine Laboratories, San Jose State University, Moss Landing, California, USA
| | - Shelby L Ziegler
- Odum School of Ecology, University of Georgia, Athens, Georgia, USA
| | - Kerry J Nickols
- Department of Biology, California State University Northridge, Northridge, California, USA
| | - Jennifer E Caselle
- Marine Science Institute, University of California, Santa Barbara, Santa Barbara, California, USA
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17
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Lavin CP, Pauly D, Dimarchopoulou D, Liang C, Costello MJ. Fishery catch is affected by geographic expansion, fishing down food webs and climate change in Aotearoa, New Zealand. PeerJ 2023; 11:e16070. [PMID: 37750081 PMCID: PMC10518166 DOI: 10.7717/peerj.16070] [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: 05/08/2023] [Accepted: 08/20/2023] [Indexed: 09/27/2023] Open
Abstract
Historical fishing effort has resulted, in many parts of the ocean, in increasing catches of smaller, lower trophic level species once larger higher trophic level species have been depleted. Concurrently, changes in the geographic distribution of marine species have been observed as species track their thermal affinity in line with ocean warming. However, geographic shifts in fisheries, including to deeper waters, may conceal the phenomenon of fishing down the food web and effects of climate warming on fish stocks. Fisheries-catch weighted metrics such as the Mean Trophic Level (MTL) and Mean Temperature of the Catch (MTC) are used to investigate these phenomena, although apparent trends of these metrics can be masked by the aforementioned geographic expansion and deepening of fisheries catch across large areas and time periods. We investigated instances of both fishing down trophic levels and climate-driven changes in the geographic distribution of fished species in New Zealand waters from 1950-2019, using the MTL and MTC. Thereafter, we corrected for the masking effect of the geographic expansion of fisheries within these indices by using the Fishing-in-Balance (FiB) index and the adapted Mean Trophic Level (aMTL) index. Our results document the offshore expansion of fisheries across the New Zealand Exclusive Economic Zone (EEZ) from 1950-2019, as well as the pervasiveness of fishing down within nearshore fishing stock assemblages. We also revealed the warming of the MTC for pelagic-associated fisheries, trends that were otherwise masked by the depth- and geographic expansion of New Zealand fisheries across the study period.
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Affiliation(s)
| | - Daniel Pauly
- Sea Around Us, Institute for the Ocean and Fisheries, University of British Columbia, Vancouver, British Columbia, Canada
| | - Donna Dimarchopoulou
- Biology Department, Dalhousie University, Halifax, Nova Scotia, Canada
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, United States
| | - Cui Liang
- Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
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18
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Jung J, Jhang SY, Kim B, Koh B, Ban C, Seo H, Park T, Chi WJ, Kim S, Kim H, Yu J. The first high-quality genome assembly and annotation of Patiria pectinifera. Sci Data 2023; 10:642. [PMID: 37730712 PMCID: PMC10511450 DOI: 10.1038/s41597-023-02508-1] [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: 05/24/2023] [Accepted: 08/29/2023] [Indexed: 09/22/2023] Open
Abstract
The blue bat star, a highly adaptive species in the East Sea of Korea, has displayed remarkable success in adapting to recent climate change. The genetic mechanisms behind this success were not well-understood, prompting our report on the first chromosome-level assembly of the Patiria genus. We assembled the genome using Nanopore and Illumina sequences, yielding a total length of 615 Mb and a scaffold N50 of 24,204,423 bp. Hi-C analysis allowed us to anchor the scaffold sequences onto 22 pseudochromosomes. K-mer based analysis revealed 5.16% heterozygosity rate of the genome, higher than any previously reported echinoderm species. Our transposable element analysis exposed a substantial number of genome-wide retrotransposons and DNA transposons. These results offer valuable resources for understanding the evolutionary mechanisms behind P. pectinifera's successful adaptation in fluctuating environments.
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Affiliation(s)
- Jaehoon Jung
- eGnome, Inc., 26 Beobwon-ro 9-gil, Songpa-gu, Seoul, 05836, Republic of Korea
- Department of Agricultural and Life Sciences and Research Institute of Population Genomics, Seoul National University, Seoul, Republic of Korea
| | - So Yun Jhang
- eGnome, Inc., 26 Beobwon-ro 9-gil, Songpa-gu, Seoul, 05836, Republic of Korea
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Bongsang Kim
- eGnome, Inc., 26 Beobwon-ro 9-gil, Songpa-gu, Seoul, 05836, Republic of Korea
- Department of Agricultural and Life Sciences and Research Institute of Population Genomics, Seoul National University, Seoul, Republic of Korea
| | - Bomin Koh
- eGnome, Inc., 26 Beobwon-ro 9-gil, Songpa-gu, Seoul, 05836, Republic of Korea
- Department of Agricultural and Life Sciences and Research Institute of Population Genomics, Seoul National University, Seoul, Republic of Korea
| | - Chaeyoung Ban
- eGnome, Inc., 26 Beobwon-ro 9-gil, Songpa-gu, Seoul, 05836, Republic of Korea
| | - Hyojung Seo
- eGnome, Inc., 26 Beobwon-ro 9-gil, Songpa-gu, Seoul, 05836, Republic of Korea
| | - Taeseo Park
- Animal Resources Division, National Institute of Biological Resources, Incheon, 22689, Republic of Korea
| | - Won-Jae Chi
- Microorganism Resources Division, National Institute of Biological Resources, Incheon, 22689, Republic of Korea
| | - Soonok Kim
- Microorganism Resources Division, National Institute of Biological Resources, Incheon, 22689, Republic of Korea
| | - Heebal Kim
- eGnome, Inc., 26 Beobwon-ro 9-gil, Songpa-gu, Seoul, 05836, Republic of Korea
- Department of Agricultural and Life Sciences and Research Institute of Population Genomics, Seoul National University, Seoul, Republic of Korea
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Jaewoong Yu
- eGnome, Inc., 26 Beobwon-ro 9-gil, Songpa-gu, Seoul, 05836, Republic of Korea.
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19
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Zamborain-Mason J, Cinner JE, MacNeil MA, Graham NAJ, Hoey AS, Beger M, Brooks AJ, Booth DJ, Edgar GJ, Feary DA, Ferse SCA, Friedlander AM, Gough CLA, Green AL, Mouillot D, Polunin NVC, Stuart-Smith RD, Wantiez L, Williams ID, Wilson SK, Connolly SR. Sustainable reference points for multispecies coral reef fisheries. Nat Commun 2023; 14:5368. [PMID: 37666831 PMCID: PMC10477311 DOI: 10.1038/s41467-023-41040-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: 01/20/2023] [Accepted: 08/18/2023] [Indexed: 09/06/2023] Open
Abstract
Sustainably managing fisheries requires regular and reliable evaluation of stock status. However, most multispecies reef fisheries around the globe tend to lack research and monitoring capacity, preventing the estimation of sustainable reference points against which stocks can be assessed. Here, combining fish biomass data for >2000 coral reefs, we estimate site-specific sustainable reference points for coral reef fisheries and use these and available catch estimates to assess the status of global coral reef fish stocks. We reveal that >50% of sites and jurisdictions with available information have stocks of conservation concern, having failed at least one fisheries sustainability benchmark. We quantify the trade-offs between biodiversity, fish length, and ecosystem functions relative to key benchmarks and highlight the ecological benefits of increasing sustainability. Our approach yields multispecies sustainable reference points for coral reef fisheries using environmental conditions, a promising means for enhancing the sustainability of the world's coral reef fisheries.
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Affiliation(s)
- Jessica Zamborain-Mason
- Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA.
- College of Science and Engineering, James Cook University, Townsville, QLD, Australia.
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD, Australia.
| | - Joshua E Cinner
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD, Australia
| | - M Aaron MacNeil
- Ocean Frontier Institute, Department of Biology, Dalhousie University, Halifax, NS, B3H 3J5, Canada
| | | | - Andrew S Hoey
- College of Science and Engineering, James Cook University, Townsville, QLD, Australia
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD, Australia
| | - Maria Beger
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, West Yorkshire, LS2 9JT, UK
- Centre for Biodiversity and Conservation Science, School of Biological Sciences, University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Andrew J Brooks
- Coastal Research Center, Marine Science Institute, University of California, Santa Barbara, CA, 93106, USA
| | - David J Booth
- School of Life Sciences, University of Technology Sydney 2007 Australia, Ultimo, Australia
| | - Graham J Edgar
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS 7001, Australia
| | | | - Sebastian C A Ferse
- Leibniz Centre for Tropical Marine Research (ZMT), 28359, Bremen, Germany
- Faculty of Biology & Chemistry (FB2), University of Bremen, 28359, Bremen, Germany
| | - Alan M Friedlander
- National Geographic Society, Pristine Seas Program, 1145 17th Street N.W, Washington DC, 20036-4688, USA
- Hawai'i Institute of Marine Biology, Kāne'ohe, Hawai'i, 96744, USA
| | | | - Alison L Green
- King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - David Mouillot
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD, Australia
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Nicholas V C Polunin
- School of Natural & Environmental Sciences, Newcastle University NE17RU, Newcastle upon Tyne, UK
| | - Rick D Stuart-Smith
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS 7001, Australia
| | - Laurent Wantiez
- University of New Caledonia, BPR4 98851, Noumea cedex, New Caledonia
| | - Ivor D Williams
- Coral Reef Ecosystems Division, NOAA Pacific Islands Fisheries Science Center, Honolulu, HI, 96818, USA
| | - Shaun K Wilson
- Oceans Institute, University of Western Australia, Crawley, WA, 6009, Australia
- Department of Biodiversity, Conservation and Attractions, Kensington, Perth, WA, 6151, Australia
| | - Sean R Connolly
- College of Science and Engineering, James Cook University, Townsville, QLD, Australia
- Smithsonian Tropical Research Institute, Panama City, Panama
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20
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Zhan Y, Ning B, Sun J, Chang Y. Living in a hypoxic world: A review of the impacts of hypoxia on aquaculture. MARINE POLLUTION BULLETIN 2023; 194:115207. [PMID: 37453286 DOI: 10.1016/j.marpolbul.2023.115207] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/12/2023] [Accepted: 06/18/2023] [Indexed: 07/18/2023]
Abstract
Hypoxia is a harmful result of anthropogenic climate change. With the expansion of global low-oxygen zones (LOZs), many organisms have faced unprecedented challenges affecting their survival and reproduction. Extensive research has indicated that oxygen limitation has drastic effects on aquatic animals, including on their development, morphology, behavior, reproduction, and physiological metabolism. In this review, the global distribution and formation of LOZs were analyzed, and the impacts of hypoxia on aquatic animals and the molecular responses of aquatic animals to hypoxia were then summarized. The commonalities and specificities of the response to hypoxia in aquatic animals in different LOZs were discussed lastly. In general, this review will deepen the knowledge of the impacts of hypoxia on aquaculture and provide more information and research directions for the development of fishery resource protection strategies.
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Affiliation(s)
- Yaoyao Zhan
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, Liaoning, PR China
| | - Bingyu Ning
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, Liaoning, PR China
| | - Jingxian Sun
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, Liaoning, PR China; College of Life Science, Liaoning Normal University, Dalian 116029, Liaoning, PR China
| | - Yaqing Chang
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, Liaoning, PR China; College of Life Science, Liaoning Normal University, Dalian 116029, Liaoning, PR China.
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21
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Ovando D, Liu O, Molina R, Parma A, Szuwalski C. Global effects of marine protected areas on food security are unknown. Nature 2023; 621:E34-E36. [PMID: 37730877 DOI: 10.1038/s41586-023-06493-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 07/27/2023] [Indexed: 09/22/2023]
Affiliation(s)
- Daniel Ovando
- School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA, USA.
- Inter-American Tropical Tuna Commission, La Jolla, CA, USA.
| | - Owen Liu
- Northwest Fisheries Science Center, National Oceanic and Atmospheric Administration, Seattle, WA, USA
| | - Renato Molina
- Rosenstiel School of Marine, Atmospheric, and Earth Science and Miami Herbert Business School, University of Miami, Miami, FL, USA
| | - Ana Parma
- Centro para el Estudio de Sistemas Marinos Centro Nacional Patagónico-CONICET, Puerto Madryn, Argentina
| | - Cody Szuwalski
- Alaska Fishery Science Center, National Oceanic and Atmospheric Administration, Seattle, WA, USA
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22
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Liu OR, Ward EJ, Anderson SC, Andrews KS, Barnett LA, Brodie S, Carroll G, Fiechter J, Haltuch MA, Harvey CJ, Hazen EL, Hernvann PY, Jacox M, Kaplan IC, Matson S, Norman K, Pozo Buil M, Selden RL, Shelton A, Samhouri JF. Species redistribution creates unequal outcomes for multispecies fisheries under projected climate change. SCIENCE ADVANCES 2023; 9:eadg5468. [PMID: 37595038 PMCID: PMC10438463 DOI: 10.1126/sciadv.adg5468] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 07/19/2023] [Indexed: 08/20/2023]
Abstract
Climate change drives species distribution shifts, affecting the availability of resources people rely upon for food and livelihoods. These impacts are complex, manifest at local scales, and have diverse effects across multiple species. However, for wild capture fisheries, current understanding is dominated by predictions for individual species at coarse spatial scales. We show that species-specific responses to localized environmental changes will alter the collection of co-occurring species within established fishing footprints along the U.S. West Coast. We demonstrate that availability of the most economically valuable, primary target species is highly likely to decline coastwide in response to warming and reduced oxygen concentrations, while availability of the most abundant, secondary target species will potentially increase. A spatial reshuffling of primary and secondary target species suggests regionally heterogeneous opportunities for fishers to adapt by changing where or what they fish. Developing foresight into the collective responses of species at local scales will enable more effective and tangible adaptation pathways for fishing communities.
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Affiliation(s)
- Owen R. Liu
- 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
- NRC Research Associateship Program, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 2725 Montlake Blvd. E., Seattle, WA 98112, USA
| | - Eric J. Ward
- Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98112, USA
- Affiliate Faculty, School of Aquatic and Fisheries Sciences, University of Washington, Seattle, WA 98195, USA
| | - Sean C. Anderson
- Fisheries and Oceans Canada, Pacific Biological Station, Nanaimo, British Columbia, Canada
| | - Kelly S. Andrews
- Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98112, USA
| | - Lewis A. K. Barnett
- Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98115, USA
| | - Stephanie Brodie
- Environmental Research Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Monterey, CA 93940, USA
- Institute of Marine Sciences, University of California Santa Cruz, Monterey, CA 95064, USA
| | | | - Jerome Fiechter
- Ocean Sciences Department, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Melissa A. Haltuch
- Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98115, USA
| | - Chris J. Harvey
- Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98112, USA
| | - Elliott L. Hazen
- Environmental Research Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Monterey, CA 93940, USA
- Institute of Marine Sciences, University of California Santa Cruz, Monterey, CA 95064, USA
| | - Pierre-Yves Hernvann
- Institute of Marine Sciences, University of California Santa Cruz, Monterey, CA 95064, USA
| | - Michael Jacox
- Environmental Research Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Monterey, CA 93940, USA
- Institute of Marine Sciences, University of California Santa Cruz, Monterey, CA 95064, USA
- Ocean Sciences Department, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Isaac C. Kaplan
- Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98112, USA
| | - Sean Matson
- Sustainable Fisheries Division, West Coast Region, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98115, USA
| | - Karma Norman
- Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98112, USA
| | - Mercedes Pozo Buil
- Environmental Research Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Monterey, CA 93940, USA
- Institute of Marine Sciences, University of California Santa Cruz, Monterey, CA 95064, USA
| | - Rebecca L. Selden
- Department of Biological Sciences, Wellesley College, Wellesley, MA 02481, USA
| | - Andrew Shelton
- Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98112, USA
| | - Jameal F. Samhouri
- Affiliate Faculty, School of Aquatic and Fisheries Sciences, University of Washington, Seattle, WA 98195, USA
- Courtesy Faculty, College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA
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23
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Li Y, Sun M, Kleisner KM, Mills KE, Chen Y. A global synthesis of climate vulnerability assessments on marine fisheries: Methods, scales, and knowledge co-production. GLOBAL CHANGE BIOLOGY 2023; 29:3545-3561. [PMID: 37079435 DOI: 10.1111/gcb.16733] [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: 01/31/2023] [Revised: 04/10/2023] [Accepted: 04/16/2023] [Indexed: 05/03/2023]
Abstract
Undertaking climate vulnerability assessments (CVAs) on marine fisheries is instrumental to the identification of regions, species, and stakeholders at risk of impacts from climate change, and the development of effective and targeted responses for fisheries adaptation. In this global literature review, we addressed three important questions to characterize fisheries CVAs: (i) what are the available approaches to develop CVAs in various social-ecological contexts, (ii) are different geographic scales and regions adequately represented, and (iii) how do diverse knowledge systems contribute to current understanding of vulnerability? As part of these general research efforts, we identified and characterized an inventory of frameworks and indicators that encompass a wide range of foci on ecological and socioeconomic dimensions of climate vulnerability on fisheries. Our analysis highlighted a large gap between countries with top research inputs and the most urgent adaptation needs. More research and resources are needed in low-income tropical countries to ensure existing inequities are not exacerbated. We also identified an uneven research focus across spatial scales and cautioned a possible scale mismatch between assessment and management needs. Drawing on this information, we catalog (1) a suite of research directions that could improve the utility and applicability of CVAs, particularly the examination of barriers and enabling conditions that influence the uptake of CVA results into management responses at multiple levels, (2) the lessons that have been learned from applications in data-limited regions, particularly the use of proxy indicators and knowledge co-production to overcome the problem of data deficiency, and (3) opportunities for wider applications, for example diversifying the use of vulnerability indicators in broader monitoring and management schemes. This information is used to provide a set of recommendations that could advance meaningful CVA practices for fisheries management and promote effective translation of climate vulnerability into adaptation actions.
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Affiliation(s)
- Yunzhou Li
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, USA
- Institute for Advanced Computational Science, Stony Brook University, Stony Brook, New York, USA
| | - Ming Sun
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, USA
- Institute for Advanced Computational Science, Stony Brook University, Stony Brook, New York, USA
| | | | | | - Yong Chen
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, USA
- Institute for Advanced Computational Science, Stony Brook University, Stony Brook, New York, USA
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24
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Álvarez-Noriega M, White CR, Kozłowski J, Day T, Marshall DJ. Life history optimisation drives latitudinal gradients and responses to global change in marine fishes. PLoS Biol 2023; 21:e3002114. [PMID: 37228036 DOI: 10.1371/journal.pbio.3002114] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 04/06/2023] [Indexed: 05/27/2023] Open
Abstract
Within many species, and particularly fish, fecundity does not scale with mass linearly; instead, it scales disproportionately. Disproportionate intraspecific size-reproduction relationships contradict most theories of biological growth and present challenges for the management of biological systems. Yet the drivers of reproductive scaling remain obscure and systematic predictors of how and why reproduction scaling varies are lacking. Here, we parameterise life history optimisation model to predict global patterns in the life histories of marine fishes. Our model predict latitudinal trends in life histories: Polar fish should reproduce at a later age and show steeper reproductive scaling than tropical fish. We tested and confirmed these predictions using a new, global dataset of marine fish life histories, demonstrating that the risks of mortality shape maturation and reproductive scaling. Our model also predicts that global warming will profoundly reshape fish life histories, favouring earlier reproduction, smaller body sizes, and lower mass-specific reproductive outputs, with worrying consequences for population persistence.
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Affiliation(s)
- Mariana Álvarez-Noriega
- Centre of Geometric Biology, School of Biological Sciences, Monash University, Melbourne, Victoria, Australia
| | - Craig R White
- Centre of Geometric Biology, School of Biological Sciences, Monash University, Melbourne, Victoria, Australia
| | - Jan Kozłowski
- Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland
| | - Troy Day
- Department of Mathematics and Statistics, Queen's University, Kingston, Ontario, Canada
- Department of Biology, Queen's University, Kingston, Ontario, Canada
| | - Dustin J Marshall
- Centre of Geometric Biology, School of Biological Sciences, Monash University, Melbourne, Victoria, Australia
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25
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Su F, Fan R, Yan F, Meadows M, Lyne V, Hu P, Song X, Zhang T, Liu Z, Zhou C, Pei T, Yang X, Du Y, Wei Z, Wang F, Qi Y, Chai F. Widespread global disparities between modelled and observed mid-depth ocean currents. Nat Commun 2023; 14:2089. [PMID: 37045863 PMCID: PMC10097707 DOI: 10.1038/s41467-023-37841-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 03/31/2023] [Indexed: 04/14/2023] Open
Abstract
The mid-depth ocean circulation is critically linked to actual changes in the long-term global climate system. However, in the past few decades, predictions based on ocean circulation models highlight the lack of data, knowledge, and long-term implications in climate change assessment. Here, using 842,421 observations produced by Argo floats from 2001-2020, and Lagrangian simulations, we show that only 3.8% of the mid-depth oceans, including part of the equatorial Pacific Ocean and the Antarctic Circumpolar Current, can be regarded as accurately modelled, while other regions exhibit significant underestimations in mean current velocity. Knowledge of ocean circulation is generally more complete in the low-latitude oceans but is especially poor in high latitude regions. Accordingly, we propose improvements in forecasting, model representation of stochasticity, and enhancement of observations of ocean currents. The study demonstrates that knowledge and model representations of global circulation are substantially compromised by inaccuracies of significant magnitude and direction, with important implications for modelled predictions of currents, temperature, carbon dioxide sequestration, and sea-level rise trends.
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Affiliation(s)
- Fenzhen Su
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.
- School of Geography and Ocean Sciences, Nanjing University, Nanjing, 210093, China.
- Collaborative Innovation Center for the South China Sea Studies, Nanjing University, Nanjing, 210023, China.
| | - Rong Fan
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, 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
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Michael Meadows
- School of Geography and Ocean Sciences, Nanjing University, Nanjing, 210093, China
- Department of Environmental & Geographical Science, University of Cape Town, Rondebosch, 7701, South Africa
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Vincent Lyne
- IMAS-Hobart, University of Tasmania, Tasmania, 7004, Australia
| | - Po Hu
- Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Xiangzhou Song
- College of Oceanography, Hohai University, Nanjing, 211100, China
| | - Tianyu Zhang
- College of Oceanography and Meteorology, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Zenghong Liu
- State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China
| | - Chenghu Zhou
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tao Pei
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaomei Yang
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yunyan Du
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zexun Wei
- First Institute of Oceanography, and Key Laboratory of Marine Science and Numerical Modeling, Ministry of Natural Resources, Qingdao, 266061, China
| | - Fan Wang
- Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Yiquan Qi
- College of Oceanography, Hohai University, Nanjing, 211100, China
| | - Fei Chai
- State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
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26
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Cooke SJ, Fulton EA, Sauer WHH, Lynch AJ, Link JS, Koning AA, Jena J, Silva LGM, King AJ, Kelly R, Osborne M, Nakamura J, Preece AL, Hagiwara A, Forsberg K, Kellner JB, Coscia I, Helyar S, Barange M, Nyboer E, Williams MJ, Chuenpagdee R, Begg GA, Gillanders BM. Towards vibrant fish populations and sustainable fisheries that benefit all: learning from the last 30 years to inform the next 30 years. REVIEWS IN FISH BIOLOGY AND FISHERIES 2023; 33:317-347. [PMID: 37122954 PMCID: PMC9985478 DOI: 10.1007/s11160-023-09765-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 02/07/2023] [Indexed: 05/03/2023]
Abstract
A common goal among fisheries science professionals, stakeholders, and rights holders is to ensure the persistence and resilience of vibrant fish populations and sustainable, equitable fisheries in diverse aquatic ecosystems, from small headwater streams to offshore pelagic waters. Achieving this goal requires a complex intersection of science and management, and a recognition of the interconnections among people, place, and fish that govern these tightly coupled socioecological and sociotechnical systems. The World Fisheries Congress (WFC) convenes every four years and provides a unique global forum to debate and discuss threats, issues, and opportunities facing fish populations and fisheries. The 2021 WFC meeting, hosted remotely in Adelaide, Australia, marked the 30th year since the first meeting was held in Athens, Greece, and provided an opportunity to reflect on progress made in the past 30 years and provide guidance for the future. We assembled a diverse team of individuals involved with the Adelaide WFC and reflected on the major challenges that faced fish and fisheries over the past 30 years, discussed progress toward overcoming those challenges, and then used themes that emerged during the Congress to identify issues and opportunities to improve sustainability in the world's fisheries for the next 30 years. Key future needs and opportunities identified include: rethinking fisheries management systems and modelling approaches, modernizing and integrating assessment and information systems, being responsive and flexible in addressing persistent and emerging threats to fish and fisheries, mainstreaming the human dimension of fisheries, rethinking governance, policy and compliance, and achieving equity and inclusion in fisheries. We also identified a number of cross-cutting themes including better understanding the role of fish as nutrition in a hungry world, adapting to climate change, embracing transdisciplinarity, respecting Indigenous knowledge systems, thinking ahead with foresight science, and working together across scales. By reflecting on the past and thinking about the future, we aim to provide guidance for achieving our mutual goal of sustaining vibrant fish populations and sustainable fisheries that benefit all. We hope that this prospective thinking can serve as a guide to (i) assess progress towards achieving this lofty goal and (ii) refine our path with input from new and emerging voices and approaches in fisheries science, management, and stewardship.
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Affiliation(s)
- Steven J. Cooke
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology and Institute of Environmental and Interdisciplinary Science, Carleton University, 1125 Colonel By Dr., Ottawa, ON K1S 5B6 Canada
| | - Elizabeth A. Fulton
- CSIRO Environment, Hobart, 7001 TAS Australia
- Centre for Marine Socioecology, University of Tasmania, Hobart, 7001 TAS Australia
| | - Warwick H. H. Sauer
- Department of Ichthyology and Fisheries Science, Rhodes University, Grahamstown, South Africa
| | - Abigail J. Lynch
- National Climate Adaptation Science Center, U.S. Geological Survey, 12201 Sunrise Valley Drive, Reston, VA 20192 USA
| | - Jason S. Link
- National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Woods Hole, MA USA
| | - Aaron A. Koning
- Global Water Center, University of Nevada-Reno, Reno, NV USA
| | - Joykrushna Jena
- Indian Council of Agricultural Research, Krishi Anusandhan Bhawan-II, Pusa, New Delhi, 110012 India
| | - Luiz G. M. Silva
- Institute of Environmental Engineering, ETH-Zurich, Zurich, Switzerland
| | - Alison J. King
- Centre for Freshwater Ecosystems, La Trobe University, Wodonga, 3690 Vic Australia
| | - Rachel Kelly
- Centre for Marine Socioecology, University of Tasmania, Hobart, 7001 TAS Australia
| | - Matthew Osborne
- Department of Industry, Tourism and Trade, Northern Territory Government, Darwin, 0800 NT Australia
| | - Julia Nakamura
- Strathclyde Centre for Environmental Law and Governance, University of Strathclyde Law School, Glasgow, UK
| | | | - Atsushi Hagiwara
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki, 852-8521 Japan
| | | | - Julie B. Kellner
- Woods Hole Oceanographic Institute, Falmouth, MA 02453 USA
- International Council for the Exploration of the Sea, 1553 Copenhagen, Denmark
| | - Ilaria Coscia
- School of Science, Engineering and Environment, University of Salford, Salford, M5 4WT UK
| | - Sarah Helyar
- School of Biological Sciences/Institute for Global Food Security, Queen’s University Belfast, Belfast, UK
| | - Manuel Barange
- Fisheries and Aquaculture Division, Food and Agriculture Organization of the United Nations, Viale Delle Terme Di Caracalla S/N, 00153 Rome, Italy
| | - Elizabeth Nyboer
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology and Institute of Environmental and Interdisciplinary Science, Carleton University, 1125 Colonel By Dr., Ottawa, ON K1S 5B6 Canada
| | | | - Ratana Chuenpagdee
- Department of Geography, Memorial University of Newfoundland, St. John’s, NFLD Canada
| | - Gavin A. Begg
- Department of Primary Industries and Regions, PO Box 120, Henley Beach, 5022 SA Australia
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27
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Ma S, Kang B, Li J, Sun P, Liu Y, Ye Z, Tian Y. Climate risks to fishing species and fisheries in the China Seas. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159325. [PMID: 36216044 DOI: 10.1016/j.scitotenv.2022.159325] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/14/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Climate change is one of the most concerning topics in the Anthropocene. Increasing sea water temperature will trigger a series of ecological consequences, altering the various functions and services that marine ecosystems provide for humans. Fisheries, specifically, will likely face the most direct impact. China provides unparalleled catches with enormous and intensive fishing effort, and China Seas are suffering from significantly increasing water temperature. However, uncertainties in the impacts of climate change on fishing species and fisheries in the China Seas present challenges for the formulation of coping and adapting strategies. Here, we employed a climate risk assessment framework to evaluate the climate risks of fishing species and fisheries of various provinces in China in the past decade, aiming to benefit the development and prioritization of appropriate adaptation options to climate change. Results show that considering the water temperature in the 2010s, 20 % of fishing species in the China Seas have one-fourth of their habitats unsuitable, and the situation will become worse with future warming scenarios in the 2050s when nearly half of species will have at least one-fourth of their habitats no longer suitable. Integrating hazard, exposure and vulnerability, climate risks to fisheries feature heterogeneity among provinces. Climate risks to fisheries of northern provinces are characterized by low hazard and high exposure, while the southern counterparts are largely determined by high hazard and low exposure. Climate change is threatening fishing species and remarkably altering fishery patterns in China Seas. Shifting fishing targets, increasing fishing efficiency, raising catch diversity, and updating fishery-related industries would be effective steps to help fisheries adapt to climate change, and adaptation strategies need to be tailored considering local realities.
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Affiliation(s)
- Shuyang Ma
- Frontiers Science Center for Deep Ocean Multispheres and Earth System and Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China
| | - Bin Kang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System and Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China
| | - Jianchao Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System and Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China
| | - Peng Sun
- Frontiers Science Center for Deep Ocean Multispheres and Earth System and Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China
| | - Yang Liu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System and Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China
| | - Zhenjiang Ye
- Frontiers Science Center for Deep Ocean Multispheres and Earth System and Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China
| | - Yongjun Tian
- Frontiers Science Center for Deep Ocean Multispheres and Earth System and Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology, Qingdao, China.
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28
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Pereira Campos C, Bitar SDB, Freitas C. Uncertainties regarding the natural mortality of fish can increase due global climate change. PeerJ 2023; 11:e14989. [PMID: 36908811 PMCID: PMC10000307 DOI: 10.7717/peerj.14989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 02/12/2023] [Indexed: 03/09/2023] Open
Abstract
The increase in temperature resulting from global climate change can directly affect the survival of fish and therefore population parameters such as natural mortality (M). The estimation of this parameter and the understanding of the uncertainties in its estimates are enormous challenges for studies that evaluate fish stocks. In addition, the effects of increases in temperature may be associated with life strategies. Therefore, the fuzzy set theory was used to evaluate the effects of temperature increase on the natural mortality of fish, considering different life strategies. The model showed that the increase in temperature increased the uncertainties in M estimates for all species, regardless of the life strategy. However, opportunistic species present greater uncertainties in estimates of M compared to equilibrium species. The patterns found in uncertainties of M associated with species groupings by life strategies can be used in holistic approaches for the assessment and management of recently exploited fisheries resources or for those with limited biological data.
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Affiliation(s)
| | | | - Carlos Freitas
- Departamento de Ciências Pesqueiras, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
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29
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Multistressor global change drivers reduce hatch and viability of Lingcod embryos, a benthic egg layer in the California Current System. Sci Rep 2022; 12:21987. [PMID: 36539443 PMCID: PMC9768118 DOI: 10.1038/s41598-022-25553-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 11/30/2022] [Indexed: 12/24/2022] Open
Abstract
Early life history stages of marine fishes are often more susceptible to environmental stressors than adult stages. This vulnerability is likely exacerbated for species that lay benthic egg masses bound to substrate because the embryos cannot evade locally unfavorable environmental conditions. Lingcod (Ophiodon elongatus), a benthic egg layer, is an ecologically and economically significant predator in the highly-productive California Current System (CCS). We ran a flow-through mesocosm experiment that exposed Lingcod eggs collected from Monterey Bay, CA to conditions we expect to see in the central CCS by the year 2050 and 2100. Exposure to temperature, pH, and dissolved oxygen concentrations projected by the year 2050 halved the successful hatch of Lingcod embryos and significantly reduced the size of day-1 larvae. In the year 2100 treatment, viable hatch plummeted (3% of normal), larvae were undersized (83% of normal), yolk reserves were exhausted (38% of normal), and deformities were widespread (94% of individuals). This experiment is the first to expose marine benthic eggs to future temperature, pH, and dissolved oxygen conditions in concert. Lingcod are a potential indicator species for other benthic egg layers for which global change conditions may significantly diminish recruitment rates.
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30
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Osgood‐Zimmerman A, Wakefield J. A Statistical Review of Template Model Builder: A Flexible Tool for Spatial Modelling. Int Stat Rev 2022. [DOI: 10.1111/insr.12534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | - Jon Wakefield
- Departments of Statistics and Biostatistics University of Washington Seattle Washington USA
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31
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Mellin C, Hicks CC, Fordham DA, Golden CD, Kjellevold M, MacNeil MA, Maire E, Mangubhai S, Mouillot D, Nash KL, Omukoto JO, Robinson JPW, Stuart-Smith RD, Zamborain-Mason J, Edgar GJ, Graham NAJ. Safeguarding nutrients from coral reefs under climate change. Nat Ecol Evol 2022; 6:1808-1817. [PMID: 36192542 DOI: 10.1038/s41559-022-01878-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 07/14/2022] [Indexed: 12/15/2022]
Abstract
The sustainability of coral reef fisheries is jeopardized by complex and interacting socio-ecological stressors that undermine their contribution to food and nutrition security. Climate change has emerged as one of the key stressors threatening coral reefs and their fish-associated services. How fish nutrient concentrations respond to warming oceans remains unclear but these responses are probably affected by both direct (metabolism and trophodynamics) and indirect (habitat and species range shifts) effects. Climate-driven coral habitat loss can cause changes in fish abundance and biomass, revealing potential winners and losers among major fisheries targets that can be predicted using ecological indicators and biological traits. A critical next step is to extend research focused on the quantity of available food (fish biomass) to also consider its nutritional quality, which is relevant to progress in the fields of food security and malnutrition. Biological traits are robust predictors of fish nutrient content and thus potentially indicate how climate-driven changes are expected to impact nutrient availability within future food webs on coral reefs. Here, we outline future research priorities and an anticipatory framework towards sustainable reef fisheries contributing to nutrition-sensitive food systems in a warming ocean.
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Affiliation(s)
- Camille Mellin
- The Environment Institute and School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia.
| | | | - Damien A Fordham
- The Environment Institute and School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia
| | - Christopher D Golden
- Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | | | - M Aaron MacNeil
- Ocean Frontier Institute, Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Eva Maire
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | | | - David Mouillot
- MARBEC, University of Montpellier, CNRS, IFREMER, IRD, MARBEC, Montpellier, France
| | - Kirsty L Nash
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia
- Centre for Marine Socioecology, University of Tasmania, Hobart, Tasmania, Australia
| | - Johnstone O Omukoto
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
- Kenya Marine and Fisheries Research Institute, Mombasa, Kenya
| | | | - Rick D Stuart-Smith
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia
| | - Jessica Zamborain-Mason
- Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA, USA
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia
- College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
| | - Graham J Edgar
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia
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32
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Vilas D, Fletcher RJ, Siders ZA, Chagaris D. Understanding the temporal dynamics of estimated environmental niche hypervolumes for marine fishes. Ecol Evol 2022; 12:e9604. [PMCID: PMC9748244 DOI: 10.1002/ece3.9604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 11/19/2022] [Indexed: 12/15/2022] Open
Affiliation(s)
- Daniel Vilas
- Fisheries and Aquatic Sciences Program, School of Forest, Fisheries, and Geomatics Sciences University of Florida Gainesville Florida USA
- Nature Coast Biological Station, Institute of Food and Agricultural Sciences University of Florida Cedar Key Florida USA
| | - Robert J. Fletcher
- Department of Wildlife Ecology and Conservation University of Florida Gainesville Florida USA
| | - Zachary A. Siders
- Fisheries and Aquatic Sciences Program, School of Forest, Fisheries, and Geomatics Sciences University of Florida Gainesville Florida USA
| | - David Chagaris
- Fisheries and Aquatic Sciences Program, School of Forest, Fisheries, and Geomatics Sciences University of Florida Gainesville Florida USA
- Nature Coast Biological Station, Institute of Food and Agricultural Sciences University of Florida Cedar Key Florida USA
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33
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Cheung WWL, Palacios-Abrantes J, Frölicher TL, Palomares ML, Clarke T, Lam VWY, Oyinlola MA, Pauly D, Reygondeau G, Sumaila UR, Teh LCL, Wabnitz CCC. Rebuilding fish biomass for the world's marine ecoregions under climate change. GLOBAL CHANGE BIOLOGY 2022; 28:6254-6267. [PMID: 36047439 DOI: 10.1111/gcb.16368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 07/18/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Rebuilding overexploited marine populations is an important step to achieve the United Nations' Sustainable Development Goal 14-Life Below Water. Mitigating major human pressures is required to achieve rebuilding goals. Climate change is one such key pressure, impacting fish and invertebrate populations by changing their biomass and biogeography. Here, combining projection from a dynamic bioclimate envelope model with published estimates of status of exploited populations from a catch-based analysis, we analyze the effects of different global warming and fishing levels on biomass rebuilding for the exploited species in 226 marine ecoregions of the world. Fifty three percent (121) of the marine ecoregions have significant (at 5% level) relationship between biomass and global warming level. Without climate change and under a target fishing mortality rate relative to the level required for maximum sustainable yield of 0.75, we project biomass rebuilding of 1.7-2.7 times (interquartile range) of current (average 2014-2018) levels across marine ecoregions. When global warming level is at 1.5 and 2.6°C, respectively, such biomass rebuilding drops to 1.4-2.0 and 1.1-1.5 times of current levels, with 10% and 25% of the ecoregions showing no biomass rebuilding, respectively. Marine ecoregions where biomass rebuilding is largely impacted by climate change are in West Africa, the Indo-Pacific, the central and south Pacific, and the Eastern Tropical Pacific. Coastal communities in these ecoregions are highly dependent on fisheries for livelihoods and nutrition security. Lowering the targeted fishing level and keeping global warming below 1.5°C are projected to enable more climate-sensitive ecoregions to rebuild biomass. However, our findings also underscore the need to resolve trade-offs between climate-resilient biomass rebuilding and the high near-term demand for seafood to support the well-being of coastal communities across the tropics.
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Affiliation(s)
- William W L Cheung
- Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Juliano Palacios-Abrantes
- Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
- Center for Limnology, University of Wisconsin, Madison, Wisconsin, USA
| | - Thomas L Frölicher
- Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland
- Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
| | - Maria Lourdes Palomares
- Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Tayler Clarke
- Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Vicky W Y Lam
- Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Muhammed A Oyinlola
- Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
- Institut National de la Recherche Scientifique - Centre Eau Terre Environnement, Quebec City, Quebec, Canada
| | - Daniel Pauly
- Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Gabriel Reygondeau
- Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
| | - U Rashid Sumaila
- Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
- School of Public Policy and Global Affairs, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Lydia C L Teh
- Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Colette C C Wabnitz
- Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
- Stanford Center for Ocean Solutions, Stanford University, Stanford, California, USA
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34
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Lindmark M, Audzijonyte A, Blanchard JL, Gårdmark A. Temperature impacts on fish physiology and resource abundance lead to faster growth but smaller fish sizes and yields under warming. GLOBAL CHANGE BIOLOGY 2022; 28:6239-6253. [PMID: 35822557 PMCID: PMC9804230 DOI: 10.1111/gcb.16341] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 05/28/2022] [Accepted: 06/27/2022] [Indexed: 05/29/2023]
Abstract
Resolving the combined effect of climate warming and exploitation in a food web context is key for predicting future biomass production, size-structure and potential yields of marine fishes. Previous studies based on mechanistic size-based food web models have found that bottom-up processes are important drivers of size-structure and fisheries yield in changing climates. However, we know less about the joint effects of 'bottom-up' and physiological effects of temperature; how do temperature effects propagate from individual-level physiology through food webs and alter the size-structure of exploited species in a community? Here, we assess how a species-resolved size-based food web is affected by warming through both these pathways and by exploitation. We parameterize a dynamic size spectrum food web model inspired by the offshore Baltic Sea food web, and investigate how individual growth rates, size-structure, and relative abundances of species and yields are affected by warming. The magnitude of warming is based on projections by the regional coupled model system RCA4-NEMO and the RCP 8.5 emission scenario, and we evaluate different scenarios of temperature dependence on fish physiology and resource productivity. When accounting for temperature-effects on physiology in addition to on basal productivity, projected size-at-age in 2050 increases on average for all fish species, mainly for young fish, compared to scenarios without warming. In contrast, size-at-age decreases when temperature affects resource dynamics only, and the decline is largest for young fish. Faster growth rates due to warming, however, do not always translate to larger yields, as lower resource carrying capacities with increasing temperature tend to result in decline in the abundance of larger fish and hence spawning stock biomass. These results suggest that to understand how global warming affects the size structure of fish communities, both direct metabolic effects and indirect effects of temperature via basal resources must be accounted for.
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Affiliation(s)
- Max Lindmark
- Department of Aquatic Resources, Institute of Coastal ResearchSwedish University of Agricultural SciencesÖregrundSweden
| | - Asta Audzijonyte
- Nature Research CentreVilniusLithuania
- Institute for Marine and Antarctic Studies and Centre for Marine SocioecologyUniversity of TasmaniaHobartTasmaniaAustralia
| | - Julia L. Blanchard
- Institute for Marine and Antarctic Studies and Centre for Marine SocioecologyUniversity of TasmaniaHobartTasmaniaAustralia
| | - Anna Gårdmark
- Department of Aquatic ResourcesSwedish University of Agricultural SciencesUppsalaSweden
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35
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Muñoz-Abril L, Torres MDL, Valle CA, Rubianes-Landázuri F, Galván-Magaña F, Canty SWJ, Terán MA, Brandt M, Chaves JA, Grewe PM. Lack of genetic differentiation in yellowfin tuna has conservation implications in the Eastern Pacific Ocean. PLoS One 2022; 17:e0272713. [PMID: 36040879 PMCID: PMC9426925 DOI: 10.1371/journal.pone.0272713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 07/25/2022] [Indexed: 11/19/2022] Open
Abstract
Yellowfin tuna, Thunnus albacares, is an important global fishery and of particular importance in the Eastern Pacific Ocean (EPO). According to the 2019 Inter-American Tropical Tuna Commission (IATTC) assessment, yellowfin tuna within the EPO is a single stock, and is being managed as one stock. However, previous studies indicate site fidelity, or limited home ranges, of yellowfin tuna which suggests the potential for multiple yellowfin tuna stocks within the EPO, which was supported by a population genetic study using microsatellites. If numerous stocks are present, management at the wrong spatial scales could cause the loss of minor yellowfin tuna populations in the EPO. In this study we used double digestion RADseq to assess the genetic structure of yellowfin tuna in the EPO. A total of 164 yellowfin tuna from Cabo San Lucas, México, and the Galápagos Islands and Santa Elena, Ecuador, were analysed using 18,011 single nucleotide polymorphisms. Limited genetic differentiation (FST = 0.00058–0.00328) observed among the sampling locations (México, Ecuador, Peru, and within Ecuador) is consistent with presence of a single yellowfin tuna population within the EPO. Our findings are consistent with the IATTC assessment and provide further evidence of the need for transboundary cooperation for the successful management of this important fishery throughout the EPO.
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Affiliation(s)
- Laia Muñoz-Abril
- Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito USFQ, Diego de Robles y Pampite, Quito, Ecuador
- Department of Marine Sciences, University of South Alabama, USA Drive North, Mobile, Alabama, United States of America
- * E-mail:
| | - Maria de Lourdes Torres
- Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito USFQ, Diego de Robles y Pampite, Quito, Ecuador
| | - Carlos A. Valle
- Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito USFQ, Diego de Robles y Pampite, Quito, Ecuador
| | - Francisco Rubianes-Landázuri
- Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito USFQ, Diego de Robles y Pampite, Quito, Ecuador
| | - Felipe Galván-Magaña
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, La Paz, México
| | - Steven W. J. Canty
- Smithsonian Marine Station Fort Pierce, Fort Pierce, Florida, United States of America
- Working Land and Seascapes, Smithsonian Institution, Washington, DC, United States of America
| | - Martin A. Terán
- Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito USFQ, Diego de Robles y Pampite, Quito, Ecuador
| | - Margarita Brandt
- Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito USFQ, Diego de Robles y Pampite, Quito, Ecuador
| | - Jaime A. Chaves
- Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito USFQ, Diego de Robles y Pampite, Quito, Ecuador
- Department of Biology, San Francisco State University, San Francisco, CA, United States of America
| | - Peter M. Grewe
- CSIRO Oceans & Atmosphere, Castray Esplanade, Hobart, Tasmania, Australia
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36
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Climate Security and Its Implications for East Asia. CLIMATE 2022. [DOI: 10.3390/cli10070104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study investigated the scientific progress of climate security studies through a literature review and discussed its risks in East Asia. Climate security refers to the protection of countries and societies from conflicts and riots caused by climate change. As climate change becomes more apparent, climate security has been vigorously debated in the international community. Climate security risks in East Asia, however, are not yet widely discussed. This literature review identified that climate change increases the risk of conflict not only through direct threats to people and societies from extreme weather events and natural disasters, but also indirectly through various pathways, such as shortages of water and other resources, outbreaks of climate migration, disruptions in food production, economic and social disturbances, and geopolitical changes. Considering the climate-conflict pathways identified by the literature review, East Asia may face (1) tensions caused by climate emigrants, (2) conflicts over loss of territories and fishery areas, (3) conflicts caused by water shortage, (4) instability caused by heavy rain and floods, and (5) geopolitical risks of rare earth sourcing, green industrial policies, and the Arctic. East Asian countries need to lower climate security risks in the region through cooperative international measures such as climate change mitigation, vulnerability reduction, and policy dialogue.
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37
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Millington RC, Rogers A, Cox P, Bozec Y, Mumby PJ. Combined direct and indirect impacts of warming on the productivity of coral reef fishes. Ecosphere 2022. [DOI: 10.1002/ecs2.4108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Rebecca C. Millington
- College of Engineering, Mathematics and Physical Science University of Exeter Exeter UK
- Marine Spatial Ecology Lab, School of Biological Sciences The University of Queensland Brisbane Queensland Australia
| | - Alice Rogers
- School of Biological Sciences Victoria University of Wellington Wellington New Zealand
| | - Peter Cox
- College of Engineering, Mathematics and Physical Science University of Exeter Exeter UK
| | - Yves‐Marie Bozec
- Marine Spatial Ecology Lab, School of Biological Sciences The University of Queensland Brisbane Queensland Australia
| | - Peter J. Mumby
- Marine Spatial Ecology Lab, School of Biological Sciences The University of Queensland Brisbane Queensland Australia
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38
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Millage KD, Saccomanno VR, Warham MM, Rubino LL, Schuhbauer A, Sumaila UR, Costello C. SubsidyExplorer: A decision-support tool to improve our understanding of the ecological and economic effects of reforming fisheries subsidies. PLoS One 2022; 17:e0265829. [PMID: 35657827 PMCID: PMC9165768 DOI: 10.1371/journal.pone.0265829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 03/08/2022] [Indexed: 11/18/2022] Open
Abstract
The magnitude of subsidies provided to the fishing sector by governments worldwide is immense—an estimated $35.4 billion USD per year. The majority of these subsidies may be impeding efforts to sustainably manage fisheries by incentivizing overfishing and overcapacity. Recognizing the threat these subsidies pose, the World Trade Organization has set a goal of reaching an agreement that would end fisheries subsidies that contribute to overcapacity, overfishing, and illegal fishing. However, negotiations have been hampered by uncertainty around the likely effects of reforming these subsidies. Here we present a novel method for translating a bioeconomic model into an interactive online decision support tool that draws upon real-world data on fisheries subsidies and industrial fishing activity so users can directly compare the relative ambition levels of different subsidy reform options.
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Affiliation(s)
- Katherine D. Millage
- Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California, United States of America
- Marine Science Institute, University of California Santa Barbara, Santa Barbara, California, United States of America
- * E-mail:
| | - Vienna R. Saccomanno
- Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California, United States of America
| | - Matthew M. Warham
- Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California, United States of America
| | - Laura Lea Rubino
- Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California, United States of America
| | - Anna Schuhbauer
- Institute for the Ocean and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
| | - U. Rashid Sumaila
- Institute for the Ocean and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
- School of Public Policy and Global Affairs, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Christopher Costello
- Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California, United States of America
- Department of Economics, University of California Santa Barbara, Santa Barbara, California, United States of America
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39
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Free CM, Cabral RB, Froehlich HE, Battista W, Ojea E, O'Reilly E, Palardy JE, García Molinos J, Siegel KJ, Arnason R, Juinio-Meñez MA, Fabricius K, Turley C, Gaines SD. Expanding ocean food production under climate change. Nature 2022; 605:490-496. [PMID: 35477762 DOI: 10.1038/s41586-022-04674-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 03/22/2022] [Indexed: 11/10/2022]
Abstract
As the human population and demand for food grow1, the ocean will be called on to provide increasing amounts of seafood. Although fisheries reforms and advances in offshore aquaculture (hereafter 'mariculture') could increase production2, the true future of seafood depends on human responses to climate change3. Here we investigated whether coordinated reforms in fisheries and mariculture could increase seafood production per capita under climate change. We find that climate-adaptive fisheries reforms will be necessary but insufficient to maintain global seafood production per capita, even with aggressive reductions in greenhouse-gas emissions. However, the potential for sustainable mariculture to increase seafood per capita is vast and could increase seafood production per capita under all but the most severe emissions scenario. These increases are contingent on fisheries reforms, continued advances in feed technology and the establishment of effective mariculture governance and best practices. Furthermore, dramatically curbing emissions is essential for reducing inequities, increasing reform efficacy and mitigating risks unaccounted for in our analysis. Although climate change will challenge the ocean's ability to meet growing food demands, the ocean could produce more food than it does currently through swift and ambitious action to reduce emissions, reform capture fisheries and expand sustainable mariculture operations.
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Affiliation(s)
- Christopher M Free
- Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, CA, USA. .,Marine Science Institute, University of California, Santa Barbara, Santa Barbara, CA, USA.
| | - Reniel B Cabral
- Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, CA, USA.,Marine Science Institute, University of California, Santa Barbara, Santa Barbara, CA, USA.,College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
| | - Halley E Froehlich
- Environmental Studies, University of California, Santa Barbara, Santa Barbara, CA, USA.,Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, Santa Barbara, CA, USA
| | - Willow Battista
- Oceans Program, Environmental Defense Fund, San Francisco, CA, USA
| | - Elena Ojea
- Future Oceans Lab, CIM-Universidade de Vigo, Vigo, Spain
| | - Erin O'Reilly
- Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, CA, USA.,Marine Science Institute, University of California, Santa Barbara, Santa Barbara, CA, USA.,Environmental Markets Lab, University of California, Santa Barbara, Santa Barbara, CA, USA
| | | | - Jorge García Molinos
- Arctic Research Center, Hokkaido University, Sapporo, Japan.,Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan.,Global Station for Arctic Research, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Japan
| | - Katherine J Siegel
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA, USA
| | - Ragnar Arnason
- Faculty of Economics, University of Iceland, Reykjavík, Iceland
| | - Marie Antonette Juinio-Meñez
- The Marine Science Institute, College of Science, University of the Philippines Diliman, Quezon City, Philippines
| | | | | | - Steven D Gaines
- Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, CA, USA
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40
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Heinichen M, McManus MC, Lucey SM, Aydin K, Humphries A, Innes-Gold A, Collie J. Incorporating temperature-dependent fish bioenergetics into a Narragansett Bay food web model. Ecol Modell 2022. [DOI: 10.1016/j.ecolmodel.2022.109911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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41
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Munsch SH, Greene CM, Mantua NJ, Satterthwaite WH. One hundred-seventy years of stressors erode salmon fishery climate resilience in California's warming landscape. GLOBAL CHANGE BIOLOGY 2022; 28:2183-2201. [PMID: 35075737 DOI: 10.1111/gcb.16029] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 11/12/2021] [Accepted: 11/25/2021] [Indexed: 06/14/2023]
Abstract
People seek reliable natural resources despite climate change. Diverse habitats and biologies stabilize productivity against disturbances like climate, prompting arguments to promote climate-resilient resources by prioritizing complex, less-modified ecosystems. These arguments hinge on the hypothesis that simplifying and degrading ecosystems will reduce resources' climate resilience, a process liable to be cryptically evolving across landscapes and human generations, but rarely documented. Here, we examined the industrial era (post 1848) of California's Central Valley, chronicling the decline of a diversified, functional portfolio of salmon habitats and life histories and investigating for empirical evidence of lost climate resilience in its fishery. Present perspectives indicate that California's dynamic, warming climate overlaid onto its truncated, degraded habitat mosaic severely constrains its salmon fishery. We indeed found substantial climate constraints on today's fishery, but this reflected a shifted ecological baseline. During the early stages of a stressor legacy that transformed the landscape and -- often consequently -- compressed salmon life history expression, the fishery diffused impacts of dry years across a greater number of fishing years and depended less on cool spring-summer transitions. The latter are important given today's salmon habitats, salmon life histories, and resource management practices, but are vanishing with climate change while year-to-year variation in fishery performance is rising. These findings give empirical weight to the idea that human legacies influence ecosystems' climate resilience across landscapes and boundaries (e.g., land/sea). They also raise the question of whether some contemporary climate effects are recent and attributable not only to increasing climate stress, but to past and present human actions that erode resilience. In general, it is thus worth considering that management approaches that prioritize complex, less-modified ecosystems may stabilize productivity despite increasing climate stress and such protective actions may be required for some ecological services to persist into uncertain climate futures.
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Affiliation(s)
- Stuart H Munsch
- Ocean Associates Inc., Under Contract to Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, Seattle, Washington, USA
| | - Correigh M Greene
- Fish Ecology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, Seattle, Washington, USA
| | - Nathan J Mantua
- Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, Santa Cruz, California, USA
| | - William H Satterthwaite
- Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, Santa Cruz, California, USA
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42
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Bellier E. Mixed interactions among life history stages of two harvested related species. Ecol Evol 2022; 12:e8530. [PMID: 35309747 PMCID: PMC8901886 DOI: 10.1002/ece3.8530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 12/01/2021] [Accepted: 12/17/2021] [Indexed: 12/02/2022] Open
Abstract
Climate change and harvesting can affect the ecosystems' functioning by altering the population dynamics and interactions among species. Knowing how species interact is essential for better understanding potentially unintended consequences of harvest on multiple species in ecosystems. I analyzed how stage‐specific interactions between two harvested competitors, the haddock (Melanogrammus aeglefinus) and Atlantic cod (Gadus morhua), living in the Barents Sea affect the outcome of changes in the harvest of the two species. Using state‐space models that account for observation errors and stochasticity in the population dynamics, I run different harvesting scenarios and track population‐level responses of both species. The increasing temperature elevated the number of larvae of haddock but did not significantly influence the older age‐classes. The nature of the interactions between both species shifted from predator‐prey to competition around age‐2 to ‐3. Increased cod fishing mortality, which led to decreasing abundance of cod, was associated with an increasing overall abundance of haddock, which suggests compensatory dynamics of both species. From a stage‐specific approach, I show that a change in the abundance in one species may propagate to other species, threatening the exploited species' recovery. Thus, this study demonstrates that considering interactions among life history stages of harvested species is essential to enhance species' co‐existence in harvested ecosystems. The approach developed in this study steps forward the analyses of effects of harvest and climate in multi‐species systems by considering the comprehension of complex ecological processes to facilitate the sustainable use of natural resources.
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Affiliation(s)
- Edwige Bellier
- Department of Arctic and Marine Biology The Arctic University of Norway Tromsø Norway
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43
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Lotze HK, Mellon S, Coyne J, Betts M, Burchell M, Fennel K, Dusseault MA, Fuller SD, Galbraith E, Garcia Suarez L, de Gelleke L, Golombek N, Kelly B, Kuehn SD, Oliver E, MacKinnon M, Muraoka W, Predham IT, Rutherford K, Shackell N, Sherwood O, Sibert EC, Kienast M. Long-term ocean and resource dynamics in a hotspot of climate change. Facets (Ott) 2022. [DOI: 10.1139/facets-2021-0197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The abundance, distribution, and size of marine species are linked to temperature and nutrient regimes and are profoundly affected by humans through exploitation and climate change. Yet little is known about long-term historical links between ocean environmental changes and resource abundance to provide context for current and potential future trends and inform conservation and management. We synthesize >4000 years of climate and marine ecosystem dynamics in a Northwest Atlantic region currently undergoing rapid changes, the Gulf of Maine and Scotian Shelf. This period spans the late Holocene cooling and recent warming and includes both Indigenous and European influence. We compare environmental records from instrumental, sedimentary, coral, and mollusk archives with ecological records from fossils, archaeological, historical, and modern data, and integrate future model projections of environmental and ecosystem changes. This multidisciplinary synthesis provides insight into multiple reference points and shifting baselines of environmental and ecosystem conditions, and projects a near-future departure from natural climate variability in 2028 for the Scotian Shelf and 2034 for the Gulf of Maine. Our work helps advancing integrative end-to-end modeling to improve the predictive capacity of ecosystem forecasts with climate change. Our results can be used to adjust marine conservation strategies and network planning and adapt ecosystem-based management with climate change.
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Affiliation(s)
- Heike K. Lotze
- Department of Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Stefanie Mellon
- Department of Oceanography, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Jonathan Coyne
- Department of Oceanography, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Matthew Betts
- Canadian Museum of History, Gatineau, QC K1A 0M8, Canada
| | - Meghan Burchell
- Department of Archaeology, Memorial University of Newfoundland, St. John’s, NL A1C 5S7, Canada
| | - Katja Fennel
- Department of Oceanography, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Marisa A. Dusseault
- Department of Archaeology, Memorial University of Newfoundland, St. John’s, NL A1C 5S7, Canada
| | | | - Eric Galbraith
- Department of Earth and Planetary Sciences, McGill University, Montreal, QC H3A 0E8, Canada
- Institut de Ciència i Tecnologia Ambientals (ICTA-UAB), Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Lina Garcia Suarez
- Department of Oceanography, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Laura de Gelleke
- Department of Oceanography, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Nina Golombek
- Department of Earth and Environmental Sciences, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | | | - Sarah D. Kuehn
- Department of Archaeology, Memorial University of Newfoundland, St. John’s, NL A1C 5S7, Canada
| | - Eric Oliver
- Department of Oceanography, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Megan MacKinnon
- Department of Archaeology, Memorial University of Newfoundland, St. John’s, NL A1C 5S7, Canada
| | - Wendy Muraoka
- Department of Oceanography, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Ian T.G. Predham
- Department of Archaeology, Memorial University of Newfoundland, St. John’s, NL A1C 5S7, Canada
| | - Krysten Rutherford
- Department of Oceanography, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Nancy Shackell
- Ocean and Ecosystem Sciences Division, Fisheries and Oceans Canada, Dartmouth, NS B3B 1J6, Canada
| | - Owen Sherwood
- Department of Earth and Environmental Sciences, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Elizabeth C. Sibert
- Department of Earth and Planetary Sciences, Yale University, PO Box 208109, New Haven, CT 06520, USA
- Yale Institute for Biospheric Studies, Yale University, 170 Whitney Avenue, New Haven, CT 06511, USA
| | - Markus Kienast
- Department of Oceanography, Dalhousie University, Halifax, NS B3H 4R2, Canada
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Mulders Y, Filbee‐Dexter K, Bell S, Bosch NE, Pessarrodona A, Sahin D, Vranken S, Zarco‐Perello S, Wernberg T. Intergrading reef communities across discrete seaweed habitats in a temperate-tropical transition zone: Lessons for species reshuffling in a warming ocean. Ecol Evol 2022; 12:e8538. [PMID: 35127041 PMCID: PMC8796930 DOI: 10.1002/ece3.8538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 12/08/2021] [Accepted: 12/10/2021] [Indexed: 11/15/2022] Open
Abstract
Temperate reefs are increasingly affected by the direct and indirect effects of climate change. At many of their warm range edges, cool-water kelps are decreasing, while seaweeds with warm-water affinities are increasing. These habitat-forming species provide different ecological functions, and shifts to warm-affinity seaweeds are expected to modify the structure of associated communities. Predicting the nature of such shifts at the ecosystem level is, however, challenging, as they often occur gradually over large geographical areas. Here, we take advantage of a climatic transition zone, where cool-affinity (kelp) and warm-affinity (Sargassum) seaweed forests occur adjacently under similar environmental conditions, to test whether these seaweed habitats support different associated seaweed, invertebrate, coral, and fish assemblages. We found clear differences in associated seaweed assemblages between habitats characterized by kelp and Sargassum abundance, with kelp having higher biomass and seaweed diversity and more cool-affinity species than Sargassum habitats. The multivariate invertebrate and fish assemblages were not different between habitats, despite a higher diversity of fish species in the Sargassum habitat. No pattern in temperature affinity of the invertebrate or fish assemblages in each habitat was found, and few fish species were exclusive to one habitat or the other. These findings suggest that, as ocean warming continues to replace kelps with Sargassum, the abundance and diversity of associated seaweeds could decrease, whereas fish could increase. Nevertheless, the more tropicalized seaweed habitats may provide a degree of functional redundancy to associated fauna in temperate seaweed habitats.
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Affiliation(s)
- Yannick Mulders
- UWA Oceans Institute and School of Biological SciencesPerthWAAustralia
| | - Karen Filbee‐Dexter
- UWA Oceans Institute and School of Biological SciencesPerthWAAustralia
- Institute of Marine ResearchBergenNorway
| | - Sahira Bell
- UWA Oceans Institute and School of Biological SciencesPerthWAAustralia
| | - Nestor E. Bosch
- UWA Oceans Institute and School of Biological SciencesPerthWAAustralia
| | | | - Defne Sahin
- UWA Oceans Institute and School of Biological SciencesPerthWAAustralia
| | - Sofie Vranken
- UWA Oceans Institute and School of Biological SciencesPerthWAAustralia
| | | | - Thomas Wernberg
- UWA Oceans Institute and School of Biological SciencesPerthWAAustralia
- Institute of Marine ResearchBergenNorway
- Department of Science and EnvironmentRoskilde UniversityRoskildeDenmark
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45
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Woodward G, Morris O, Barquín J, Belgrano A, Bull C, de Eyto E, Friberg N, Guðbergsson G, Layer-Dobra K, Lauridsen RB, Lewis HM, McGinnity P, Pawar S, Rosindell J, O’Gorman EJ. Using Food Webs and Metabolic Theory to Monitor, Model, and Manage Atlantic Salmon—A Keystone Species Under Threat. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.675261] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Populations of Atlantic salmon are crashing across most of its natural range: understanding the underlying causes and predicting these collapses in time to intervene effectively are urgent ecological and socioeconomic priorities. Current management techniques rely on phenomenological analyses of demographic population time-series and thus lack a mechanistic understanding of how and why populations may be declining. New multidisciplinary approaches are thus needed to capitalize on the long-term, large-scale population data that are currently scattered across various repositories in multiple countries, as well as marshaling additional data to understand the constraints on the life cycle and how salmon operate within the wider food web. Here, we explore how we might combine data and theory to develop the mechanistic models that we need to predict and manage responses to future change. Although we focus on Atlantic salmon—given the huge data resources that already exist for this species—the general principles developed here could be applied and extended to many other species and ecosystems.
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46
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Damalas D, Sgardeli V, Vasilakopoulos P, Tserpes G, Maravelias C. Evidence of climate-driven regime shifts in the Aegean Sea's demersal resources: A study spanning six decades. Ecol Evol 2021; 11:16951-16971. [PMID: 34938484 PMCID: PMC8668738 DOI: 10.1002/ece3.8330] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 09/03/2021] [Accepted: 10/14/2021] [Indexed: 11/17/2022] Open
Abstract
Climate change (CC) can alter the configuration of marine ecosystems; however, ecosystem response and resilience to change are usually case-specific. The effect of CC on the demersal resources of the Aegean Sea (east Mediterranean Sea) was investigated during the past six decades applying a combination of multivariate analysis, non-additive modeling and the Integrated Resilience Assessment (IRA) framework. We focused on the study of: (i) the biological "system" complex, using proxies of biomass (landings per unit of capacity) for 12 demersal taxa, and (ii) the environmental "stressor" complex, described by 12 abiotic variables. Pronounced changes have occurred in both the environmental and biological system over the studied period. The majority of the environmental stressors exhibited strikingly increasing trends (temperature, salinity, primary production indices) with values started exceeding the global historical means during late 1980s-early 1990s. It is suggested that the biological system exhibited a discontinuous response to CC, with two apparently climate-induced regime shifts occurring in the past 25 years. There is evidence for two-fold bifurcations and four tipping points in the system, forming a folded stability landscape with three basins of attraction. The shape of the stability landscape for the Aegean Sea's biological system suggests that while the initial state (1966-1991) was rather resilient to CC, absorbing two environmental step-changes, this was not the case for the two subsequent ones (intermediate: 1992-2002; recent: 2003-2016). Given the current trajectory of environmental change, it is highly unlikely that the biological system will ever return to its pre-1990s state, as it is entering areas of unprecedented climatic conditions and there is some evidence that the system may be even shifting toward a new state. Our approach and findings may be relevant to other marine areas of the Mediterranean and beyond, undergoing climate-driven regime shifts, and can assist to their adaptive management.
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Affiliation(s)
- Dimitrios Damalas
- Hellenic Centre for Marine ResearchInstitute of Marine Biological Resources and Inland WatersHeraklionGreece
| | - Vasiliki Sgardeli
- Hellenic Centre for Marine ResearchInstitute of Marine Biological Resources and Inland WatersHeraklionGreece
| | | | - Georgios Tserpes
- Hellenic Centre for Marine ResearchInstitute of Marine Biological Resources and Inland WatersHeraklionGreece
| | - Christos Maravelias
- Department of Ichthyology and Aquatic EnvironmentUniversity of ThessalyVolosGreece
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A Forecasting and Prediction Methodology for Improving the Blue Economy Resilience to Climate Change in the Romanian Lower Danube Euroregion. SUSTAINABILITY 2021. [DOI: 10.3390/su132111563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
European Union (EU) policy encourages the development of a blue economy (BE) by unlocking the full economic potential of oceans, seas, lakes, rivers and other water resources, especially in member countries in which it represents a low contribution to the national economy (under 1%). However, climate change represents a main barrier to fully realizing a BE. Enabling conditions that will support the sustainable development of a BE and increase its climate resiliency must be promoted. Romania has high potential to contribute to the development of the EU BE due to its geographic characteristics, namely the presence of the Danube Delta-Black Sea macrosystem, which is part of the Romanian Lower Danube Euroregion (RLDE). Aquatic living resources represent a sector which can significantly contribute to the growth of the BE in the RLDE, a situation which imposes restrictions for both halting biodiversity loss and maintaining the proper conditions to maximize the benefits of the existing macrosystem. It is known that climate change causes water quality problems, accentuates water level fluctuations and loss of biodiversity and induces the destruction of habitats, which eventually leads to fish stock depletion. This paper aims to develop an analytical framework based on multiple linear predictive and forecast models that offers cost-efficient tools for the monitoring and control of water quality, fish stock dynamics and biodiversity in order to strengthen the resilience and adaptive capacity of the BE of the RLDE in the context of climate change. The following water-dependent variables were considered: total nitrogen (TN); total phosphorus (TP); dissolved oxygen (DO); pH; water temperature (wt); and water level, all of which were measured based on a series of 26 physicochemical indicators associated with 4 sampling areas within the RLDE (Brăila, Galați, Tulcea and Sulina counties). Predictive models based on fish species catches associated with the Galati County Danube River Basin segment and the “Danube Delta” Biosphere Reserve Administration territory were included in the analytical framework to establish an efficient tool for monitoring fish stock dynamics and structures as well as identify methods of controlling fish biodiversity in the RLDE to enhance the sustainable development and resilience of the already-existing BE and its expansion (blue growth) in the context of aquatic environment climate variation. The study area reflects the integrated approach of the emerging BE, focused on the ocean, seas, lakes and rivers according to the United Nations Agenda. The results emphasized the vulnerability of the RLDE to climate change, a situation revealed by the water level, air temperature and water quality parameter trend lines and forecast models. Considering the sampling design applied within the RLDE, it can be stated that the Tulcea county Danube sector was less affected by climate change compared with the Galați county sector as confirmed by water TN and TP forecast analysis, which revealed higher increasing trends in Galați compared with Tulcea. The fish stock biodiversity was proven to be affected by global warming within the RLDE, since peaceful species had a higher upward trend compared with predatory species. Water level and air temperature forecasting analysis proved to be an important tool for climate change monitoring in the study area. The resulting analytical framework confirmed that time series methods could be used together with machine learning prediction methods to highlight their synergetic abilities for monitoring and predicting the impact of climate change on the marine living resources of the BE sector within the RLDE. The forecasting models developed in the present study were meant to be used as methods of revealing future information, making it possible for decision makers to adopt proper management solutions to prevent or limit the negative impacts of climate change on the BE. Through the identified independent variables, prediction models offer a solution for managing the dependent variables and the possibility of performing less cost-demanding aquatic environment monitoring activities.
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48
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Li J, Convertino M. Temperature increase drives critical slowing down of fish ecosystems. PLoS One 2021; 16:e0246222. [PMID: 34669703 PMCID: PMC8528280 DOI: 10.1371/journal.pone.0246222] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 09/12/2021] [Indexed: 01/13/2023] Open
Abstract
Fish ecosystems perform ecological functions that are critically important for the sustainability of marine ecosystems, such as global food security and carbon stock. During the 21st century, significant global warming caused by climate change has created pressing challenges for fish ecosystems that threaten species existence and global ecosystem health. Here, we study a coastal fish community in Maizuru Bay, Japan, and investigate the relationships between fluctuations of ST, abundance-based species interactions and salient fish biodiversity. Observations show that a local 20% increase in temperature from 2002 to 2014 underpins a long-term reduction in fish diversity (∼25%) played out by some native and invasive species (e.g. Chinese wrasse) becoming exceedingly abundant; this causes a large decay in commercially valuable species (e.g. Japanese anchovy) coupled to an increase in ecological productivity. The fish community is analyzed considering five temperature ranges to understand its atemporal seasonal sensitivity to ST changes, and long-term trends. An optimal information flow model is used to reconstruct species interaction networks that emerge as topologically different for distinct temperature ranges and species dynamics. Networks for low temperatures are more scale-free compared to ones for intermediate (15-20°C) temperatures in which the fish ecosystem experiences a first-order phase transition in interactions from locally stable to metastable and globally unstable for high temperatures states as suggested by abundance-spectrum transitions. The dynamic dominant eigenvalue of species interactions shows increasing instability for competitive species (spiking in summer due to intermediate-season critical transitions) leading to enhanced community variability and critical slowing down despite higher time-point resilience. Native competitive species whose abundance is distributed more exponentially have the highest total directed interactions and are keystone species (e.g. Wrasse and Horse mackerel) for the most salient links with cooperative decaying species. Competitive species, with higher eco-climatic memory and synchronization, are the most affected by temperature and play an important role in maintaining fish ecosystem stability via multitrophic cascades (via cooperative-competitive species imbalance), and as bioindicators of change. More climate-fitted species follow temperature increase causing larger divergence divergence between competitive and cooperative species. Decreasing dominant eigenvalues and lower relative network optimality for warmer oceans indicate fishery more attracted toward persistent oscillatory states, yet unpredictable, with lower cooperation, diversity and fish stock despite the increase in community abundance due to non-commercial and venomous species. We emphasize how changes in species interaction organization, primarily affected by temperature fluctuations, are the backbone of biodiversity dynamics and yet for functional diversity in contrast to taxonomic richness. Abundance and richness manifest gradual shifts while interactions show sudden shift. The work provides data-driven tools for analyzing and monitoring fish ecosystems under the pressure of global warming or other stressors. Abundance and interaction patterns derived by network-based analyses proved useful to assess ecosystem susceptibility and effective change, and formulate predictive dynamic information for science-based fishery policy aimed to maintain marine ecosystems stable and sustainable.
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Affiliation(s)
- Jie Li
- Nexus Group, Laboratory of Information Communication Networks, Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Japan
| | - Matteo Convertino
- Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
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Bianchi D, Carozza DA, Galbraith ED, Guiet J, DeVries T. Estimating global biomass and biogeochemical cycling of marine fish with and without fishing. SCIENCE ADVANCES 2021; 7:eabd7554. [PMID: 34623923 PMCID: PMC8500507 DOI: 10.1126/sciadv.abd7554] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The biomass and biogeochemical roles of fish in the ocean are ecologically important but poorly known. Here, we use a data-constrained marine ecosystem model to provide a first-order estimate of the historical reduction of fish biomass due to fishing and the associated change in biogeochemical cycling rates. The pre-exploitation global biomass of exploited fish (10 g to 100 kg) was 3.3 ± 0.5 Gt, cycling roughly 2% of global primary production (9.4 ± 1.6 Gt year−1) and producing 10% of surface biological export. Particulate organic matter produced by exploited fish drove roughly 10% of the oxygen consumption and biological carbon storage at depth. By the 1990s, biomass and cycling rates had been reduced by nearly half, suggesting that the biogeochemical impact of fisheries has been comparable to that of anthropogenic climate change. Our results highlight the importance of developing a better mechanistic understanding of how fish alter ocean biogeochemistry.
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Affiliation(s)
- Daniele Bianchi
- Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles, CA, USA
- Corresponding author.
| | - David A. Carozza
- Département de Mathématiques, Université du Québec à Montréal, Montréal, Quebec, Canada
| | - Eric D. Galbraith
- Institut de Ciència i Tecnologia Ambientals (ICTA-UAB), Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
- Department of Earth and Planetary Science, McGill University, Montreal, Quebec, Canada
| | - Jérôme Guiet
- Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles, CA, USA
- Institut de Ciència i Tecnologia Ambientals (ICTA-UAB), Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Timothy DeVries
- Department of Geography, University of California, Santa Barbara, Santa Barbara, CA, USA
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50
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Lavender E, Fox CJ, Burrows MT. Modelling the impacts of climate change on thermal habitat suitability for shallow-water marine fish at a global scale. PLoS One 2021; 16:e0258184. [PMID: 34606498 PMCID: PMC8489719 DOI: 10.1371/journal.pone.0258184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 09/21/2021] [Indexed: 11/19/2022] Open
Abstract
Understanding and predicting the response of marine communities to climate change at large spatial scales, and distilling this information for policymakers, are prerequisites for ecosystem-based management. Changes in thermal habitat suitability across species’ distributions are especially concerning because of their implications for abundance, affecting species’ conservation, trophic interactions and fisheries. However, most predictive studies of the effects of climate change have tended to be sub-global in scale and focused on shifts in species’ range edges or commercially exploited species. Here, we develop a widely applicable methodology based on climate response curves to predict global-scale changes in thermal habitat suitability. We apply the approach across the distributions of 2,293 shallow-water fish species under Representative Concentration Pathways 4.5 and 8.5 by 2050–2100. We find a clear pattern of predicted declines in thermal habitat suitability in the tropics versus general increases at higher latitudes. The Indo-Pacific, the Caribbean and western Africa emerge as the areas of most concern, where high species richness and the strongest declines in thermal habitat suitability coincide. This reflects a pattern of consistently narrow thermal ranges, with most species in these regions already exposed to temperatures above inferred thermal optima. In contrast, in temperate regions, such as northern Europe, where most species live below thermal optima and thermal ranges are wider, positive changes in thermal habitat suitability suggest that these areas are likely to emerge as the greatest beneficiaries of climate change, despite strong predicted temperature increases.
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Affiliation(s)
- Edward Lavender
- The Scottish Association for Marine Science, Scottish Marine Institute, Dunstaffnage, Oban, Argyll, Scotland
- * E-mail:
| | - Clive J. Fox
- The Scottish Association for Marine Science, Scottish Marine Institute, Dunstaffnage, Oban, Argyll, Scotland
| | - Michael T. Burrows
- The Scottish Association for Marine Science, Scottish Marine Institute, Dunstaffnage, Oban, Argyll, Scotland
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