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Dedrick AG, Catalano KA, Stuart MR, White JW, Montes HR, Pinsky ML. Persistence of a reef fish metapopulation via network connectivity: theory and data. Ecol Lett 2021; 24:1121-1132. [PMID: 33750002 DOI: 10.1111/ele.13721] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/21/2021] [Accepted: 02/06/2021] [Indexed: 11/29/2022]
Abstract
Determining metapopulation persistence requires understanding both demographic rates and patch connectivity. Persistence is well understood in theory but has proved challenging to test empirically for marine and other species with high connectivity that precludes classic colonisation-extinction dynamics. Here, we assessed persistence for a yellowtail anemonefish (Amphiprion clarkii) metapopulation using 7 years of annual sampling data along 30 km of coastline. We carefully accounted for uncertainty in demographic rates. Despite stable population abundances through time and sufficient production of surviving offspring for replacement, the pattern of connectivity made the metapopulation unlikely to persist in isolation and reliant on immigrants from outside habitat. To persist in isolation, the metapopulation would need higher fecundity or to retain essentially all recruits produced. This assessment of persistence in a marine metapopulation shows that stable abundance alone does not indicate persistence, emphasising the necessity of assessing both demographic and connectivity processes to understand metapopulation dynamics.
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Affiliation(s)
- Allison G Dedrick
- Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, NJ, USA
| | - Katrina A Catalano
- Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, NJ, USA
| | - Michelle R Stuart
- Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, NJ, USA
| | - J Wilson White
- Department of Fisheries and Wildlife, Coastal Oregon Marine Experiment Station, Oregon State University, Newport, OR, USA
| | - Humberto R Montes
- Visayas State University, Pangasugan, Baybay City, Leyte, Philippines
| | - Malin L Pinsky
- Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, NJ, USA
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Gissi E, Manea E, Mazaris AD, Fraschetti S, Almpanidou V, Bevilacqua S, Coll M, Guarnieri G, Lloret-Lloret E, Pascual M, Petza D, Rilov G, Schonwald M, Stelzenmüller V, Katsanevakis S. A review of the combined effects of climate change and other local human stressors on the marine environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 755:142564. [PMID: 33035971 DOI: 10.1016/j.scitotenv.2020.142564] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 09/11/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
Climate change (CC) is a key, global driver of change of marine ecosystems. At local and regional scales, other local human stressors (LS) can interact with CC and modify its effects on marine ecosystems. Understanding the response of the marine environment to the combined effects of CC and LS is crucial to inform marine ecosystem-based management and planning, yet our knowledge of the potential effects of such interactions is fragmented. At a global scale, we explored how cumulative effect assessments (CEAs) have addressed CC in the marine realm and discuss progress and shortcomings of current approaches. For this we conducted a systematic review on how CEAs investigated at different levels of biological organization ecological responses, functional aspects, and the combined effect of CC and HS. Globally, the effects of 52 LS and of 27 CC-related stressors on the marine environment have been studied in combination, such as industrial fisheries with change in temperature, or sea level rise with artisanal fisheries, marine litter, change in sediment load and introduced alien species. CC generally intensified the effects of LS at species level. At trophic groups and ecosystem levels, the effects of CC either intensified or mitigated the effects of other HS depending on the trophic groups or the environmental conditions involved, thus suggesting that the combined effects of CC and LS are context-dependent and vary among and within ecosystems. Our results highlight that large-scale assessments on the spatial interaction and combined effects of CC and LS remain limited. More importantly, our results strengthen the urgent need of CEAs to capture local-scale effects of stressors that can exacerbate climate-induced changes. Ultimately, this will allow identifying management measures that aid counteracting CC effects at relevant scales.
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Affiliation(s)
- Elena Gissi
- IUAV University of Venice, Tolentini 191, Santa Croce, 30135 Venice, Italy.
| | - Elisabetta Manea
- IUAV University of Venice, Tolentini 191, Santa Croce, 30135 Venice, Italy
| | - Antonios D Mazaris
- Department of Ecology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Simonetta Fraschetti
- Università Federico II di Napoli, Napoli, Italy; Consorzio Universitario per le Scienze del Mare, P.le Flaminio 9, 00196 Rome, Italy; Stazione Zoologica Anton Dohrn, Napoli, Italy
| | - Vasiliki Almpanidou
- Department of Ecology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Stanislao Bevilacqua
- Department of Life Sciences, University of Trieste, Trieste, Italy; Consorzio Universitario per le Scienze del Mare, P.le Flaminio 9, 00196 Rome, Italy
| | - Marta Coll
- Institute of Marine Science, ICM-CSIC, Passeig Marítim de la Barceloneta, no 37-49, 08003 Barcelona, Spain; Ecopath International Initiative, Barcelona, Spain
| | - Giuseppe Guarnieri
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy; Consorzio Universitario per le Scienze del Mare, P.le Flaminio 9, 00196 Rome, Italy
| | - Elena Lloret-Lloret
- Institute of Marine Science, ICM-CSIC, Passeig Marítim de la Barceloneta, no 37-49, 08003 Barcelona, Spain; Ecopath International Initiative, Barcelona, Spain
| | - Marta Pascual
- Basque Centre for Climate Change (BC3), Edificio Sede N°1 Planta 1/Parque Científico UPV-EHU, Barrio Sarriena, s/n, 48940 Leioa, Bizkaia, Spain
| | - Dimitra Petza
- Department of Marine Sciences, University of the Aegean, University Hill, 81100 Mytilene, Greece; Directorate for Fisheries Policy & Fishery Resources Utilisation, Directorate General for Fisheries, Ministry of Rural Development & Food, 150 Syggrou Avenue, 17671 Athens, Greece
| | - Gil Rilov
- Israel Oceanographic and Limnological Research, National Institute of Oceanography, P.O. Box 8030, Haifa 31080, Israel
| | - Maura Schonwald
- Israel Oceanographic and Limnological Research, National Institute of Oceanography, P.O. Box 8030, Haifa 31080, Israel
| | | | - Stelios Katsanevakis
- Department of Marine Sciences, University of the Aegean, University Hill, 81100 Mytilene, Greece
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Dell'Apa A, Carney K, Davenport TM, Carle MV. Potential medium-term impacts of climate change on tuna and billfish in the Gulf of Mexico: A qualitative framework for management and conservation. MARINE ENVIRONMENTAL RESEARCH 2018; 141:1-11. [PMID: 30077344 DOI: 10.1016/j.marenvres.2018.07.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 07/26/2018] [Accepted: 07/27/2018] [Indexed: 06/08/2023]
Abstract
A systematic review of scientific papers on the potential impacts of climate-driven environmental changes on tuna and billfish in the Gulf of Mexico (GOM) was conducted to identify the climate-driven pressures and their associated potential impacts on the reproductive success and survival of tuna and billfish, and which of those impacts may have more relevance for their management and conservation in the GOM by 2050. An Impact Screening Analysis (ISA) was developed to evaluate the potential climate impacts discovered in the literature synthesis by assessing each impact against four criteria, and assigning it a ranking based on likelihood of occurrence (High, Medium, or Low). Results show three types of climate-driven pressures within the High ranking: increased water temperature; changes in ocean circulation and eddy kinetic energy; and changes in storm and wind patterns. Our findings provide valuable information to advance our understanding of key climate-driven physico-chemical processes that can impact the biology of tuna and billfish in the GOM, and enhance conservation and management of these species.
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Affiliation(s)
- Andrea Dell'Apa
- Earth Resources Technology, NOAA Restoration Center, 1315 East-West Hwy, Silver Spring, MD, 20910, USA; Ocean Conservancy, Gulf Restoration Program, 600 1stAvenue North, St Petersburg, FL, 33701, USA.
| | - Karen Carney
- Abt Associates, 64 Heritage Lane, Shelburne, VT, 05482, USA
| | - Theresa M Davenport
- Earth Resources Technology, NOAA Restoration Center, 1315 East-West Hwy, Silver Spring, MD, 20910, USA; Northeastern University, Marine Science Center, 430 Nahant Road, Nahant, MA, 01908, USA
| | - Melissa Vernon Carle
- Restoration Center, Office of Habitat Conservation, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 1315 East-West Hwy, Silver Spring, MD, 20910, USA
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Spatiotemporal disturbance characteristics determine functional stability and collapse risk of simulated microbial ecosystems. Sci Rep 2018; 8:9488. [PMID: 29934540 PMCID: PMC6015006 DOI: 10.1038/s41598-018-27785-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 06/08/2018] [Indexed: 11/22/2022] Open
Abstract
Terrestrial microbial ecosystems are exposed to many types of disturbances varying in their spatial and temporal characteristics. The ability to cope with these disturbances is crucial for maintaining microbial ecosystem functions, especially if disturbances recur regularly. Thus, understanding microbial ecosystem dynamics under recurrent disturbances and identifying drivers of functional stability and thresholds for functional collapse is important. Using a spatially explicit ecological model of bacterial growth, dispersal, and substrate consumption, we simulated spatially heterogeneous recurrent disturbances and investigated the dynamic response of pollutant biodegradation – exemplarily for an important ecosystem function. We found that thresholds for functional collapse are controlled by the combination of disturbance frequency and spatial configuration (spatiotemporal disturbance regime). For rare disturbances, the occurrence of functional collapse is promoted by low spatial disturbance fragmentation. For frequent disturbances, functional collapse is almost inevitable. Moreover, the relevance of bacterial growth and dispersal for functional stability also depends on the spatiotemporal disturbance regime. Under disturbance regimes with moderate severity, microbial properties can strongly affect functional stability and shift the threshold for functional collapse. Similarly, networks facilitating bacterial dispersal can delay functional collapse. Consequently, measures to enhance or sustain bacterial growth/dispersal are promising strategies to prevent functional collapses under moderate disturbance regimes.
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