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Park J, Van Osdel J, Turner J, Farthing CM, Miller NA, Linder HL, Ortuño Crespo G, Carmine G, Kroodsma DA. Tracking elusive and shifting identities of the global fishing fleet. Sci Adv 2023; 9:eabp8200. [PMID: 36652516 PMCID: PMC9848426 DOI: 10.1126/sciadv.abp8200] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Illegal, unreported, and unregulated (IUU) fishing costs billions of dollars per year and is enabled by vessels obfuscating their identity. Here, we combine identities of ~35,000 vessels with a decade of GPS data to provide a global assessment of fishing compliance, reflagging patterns, and fishing by foreign-owned vessels. About 17% of high seas fishing is by potentially unauthorized or internationally unregulated vessels, with hot spots of this activity in the west Indian and the southwest Atlantic Oceans. In addition, reflagging, a tactic often used to obscure oversight, occurs in just a few ports primarily by fleets with high foreign ownership. Fishing by foreign-owned vessels is concentrated in parts of high seas and certain national waters, often flying flags of convenience. These findings can address the global scope of potential IUU fishing and enable authorities to improve oversight.
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Affiliation(s)
| | | | | | | | | | | | | | - Gabrielle Carmine
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC, USA
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2
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Österblom H, Folke C, Rocha J, Bebbington J, Blasiak R, Jouffray JB, Selig ER, Wabnitz CCC, Bengtsson F, Crona B, Gupta R, Henriksson PJG, Johansson KA, Merrie A, Nakayama S, Crespo GO, Rockström J, Schultz L, Sobkowiak M, Jørgensen PS, Spijkers J, Troell M, Villarrubia-Gómez P, Lubchenco J. Scientific mobilization of keystone actors for biosphere stewardship. Sci Rep 2022; 12:3802. [PMID: 35246555 PMCID: PMC8897441 DOI: 10.1038/s41598-022-07023-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/10/2022] [Indexed: 11/09/2022] Open
Abstract
The biosphere crisis requires changes to existing business practices. We ask how corporations can become sustainability leaders, when constrained by multiple barriers to collaboration for biosphere stewardship. We describe how scientists motivated, inspired and engaged with ten of the world’s largest seafood companies, in a collaborative process aimed to enable science-based and systemic transformations (2015–2021). CEOs faced multiple industry crises in 2015 that incentivized novel approaches. New scientific insights, an invitation to collaborate, and a bold vision of transformative change towards ocean stewardship, created new opportunities and direction. Co-creation of solutions resulted in new knowledge and trust, a joint agenda for action, new capacities, international recognition, formalization of an organization, increased policy influence, time-bound goals, and convergence of corporate change. Independently funded scientists helped remove barriers to cooperation, provided means for reflection, and guided corporate strategies and actions toward ocean stewardship. By 2021, multiple individuals exercised leadership and the initiative had transitioned from preliminary and uncomfortable conversations, to a dynamic, operational organization, with capacity to perform global leadership in the seafood industry. Mobilizing transformational agency through learning, collaboration, and innovation represents a cultural evolution with potential to redirect and accelerate corporate action, to the benefit of business, people and the planet.
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Affiliation(s)
- Henrik Österblom
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden. .,South American Institute for Resilience and Sustainability Studies, Maldonado, Uruguay. .,Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
| | - Carl Folke
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden.,The Beijer Institute for Ecological Economics, Royal Swedish Academy of Science, 104 05, Stockholm, Sweden.,The Global Economic Dynamics and the Biosphere Academy Program, Royal Swedish Academy of Science, 104 05, Stockholm, Sweden
| | - Juan Rocha
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden.,South American Institute for Resilience and Sustainability Studies, Maldonado, Uruguay.,Future Earth, Swedish Royal Academy of Sciences, Box 50005, 104 05, Stockholm, Sweden
| | - Jan Bebbington
- Pentland Centre for Sustainability, University of Lancaster, Bailrigg, LA1 4YW, UK
| | - Robert Blasiak
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden.,Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Jean-Baptiste Jouffray
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden.,The Global Economic Dynamics and the Biosphere Academy Program, Royal Swedish Academy of Science, 104 05, Stockholm, Sweden
| | - Elizabeth R Selig
- Stanford Centre for Ocean Solutions, Stanford University, 473 Via Ortega, Stanford, CA, 94305, USA
| | - Colette C C Wabnitz
- Stanford Centre for Ocean Solutions, Stanford University, 473 Via Ortega, Stanford, CA, 94305, USA.,Institute for the Oceans and Fisheries, The University of British Columbia, 2202 Main Mall, Vancouver, BC, V6T1Z4, Canada
| | - Frida Bengtsson
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden
| | - Beatrice Crona
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden.,The Global Economic Dynamics and the Biosphere Academy Program, Royal Swedish Academy of Science, 104 05, Stockholm, Sweden
| | - Radhika Gupta
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden
| | - Patrik J G Henriksson
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden.,The Beijer Institute for Ecological Economics, Royal Swedish Academy of Science, 104 05, Stockholm, Sweden.,WorldFish, Jalan Batu Maung, Penang, Malaysia
| | - Karolin A Johansson
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden
| | - Andrew Merrie
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden
| | - Shinnosuke Nakayama
- Stanford Centre for Ocean Solutions, Stanford University, 473 Via Ortega, Stanford, CA, 94305, USA
| | | | - Johan Rockström
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden.,Potsdam Institute for Climate Impact Research, Telegraphenberg A31, 14473, Potsdam, Germany
| | - Lisen Schultz
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden
| | | | - Peter Søgaard Jørgensen
- The Global Economic Dynamics and the Biosphere Academy Program, Royal Swedish Academy of Science, 104 05, Stockholm, Sweden
| | - Jessica Spijkers
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden
| | - Max Troell
- Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden.,The Beijer Institute for Ecological Economics, Royal Swedish Academy of Science, 104 05, Stockholm, Sweden
| | | | - Jane Lubchenco
- Department of Integrative Biology, Oregon State University, Corvallis, OR, 97331, USA
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3
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Tittensor DP, Beger M, Boerder K, Boyce DG, Cavanagh RD, Cosandey-Godin A, Crespo GO, Dunn DC, Ghiffary W, Grant SM, Hannah L, Halpin PN, Harfoot M, Heaslip SG, Jeffery NW, Kingston N, Lotze HK, McGowan J, McLeod E, McOwen CJ, O’Leary BC, Schiller L, Stanley RRE, Westhead M, Wilson KL, Worm B. Integrating climate adaptation and biodiversity conservation in the global ocean. Sci Adv 2019; 5:eaay9969. [PMID: 31807711 PMCID: PMC6881166 DOI: 10.1126/sciadv.aay9969] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 11/01/2019] [Indexed: 05/18/2023]
Abstract
The impacts of climate change and the socioecological challenges they present are ubiquitous and increasingly severe. Practical efforts to operationalize climate-responsive design and management in the global network of marine protected areas (MPAs) are required to ensure long-term effectiveness for safeguarding marine biodiversity and ecosystem services. Here, we review progress in integrating climate change adaptation into MPA design and management and provide eight recommendations to expedite this process. Climate-smart management objectives should become the default for all protected areas, and made into an explicit international policy target. Furthermore, incentives to use more dynamic management tools would increase the climate change responsiveness of the MPA network as a whole. Given ongoing negotiations on international conservation targets, now is the ideal time to proactively reform management of the global seascape for the dynamic climate-biodiversity reality.
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Affiliation(s)
- Derek P. Tittensor
- Department of Biology, Dalhousie University, Halifax, NS, Canada
- UN Environment Programme World Conservation Monitoring Centre, Cambridge, UK
- Corresponding author.
| | - Maria Beger
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Centre for Biodiversity and Conservation Science, School of Biological Sciences, University of Queensland, Brisbane, Australia
| | - Kristina Boerder
- Department of Biology, Dalhousie University, Halifax, NS, Canada
| | - Daniel G. Boyce
- Department of Biology, Dalhousie University, Halifax, NS, Canada
| | | | | | - Guillermo Ortuño Crespo
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Daniel C. Dunn
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC, USA
- School of Earth and Environmental Sciences, University of Queensland, Brisbane, Australia
| | | | | | - Lee Hannah
- The Moore Center for Science, Conservation International, Arlington, VA, USA
| | - Patrick N. Halpin
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Mike Harfoot
- UN Environment Programme World Conservation Monitoring Centre, Cambridge, UK
| | - Susan G. Heaslip
- Fisheries and Oceans Canada, Bedford Institute of Oceanography, Dartmouth, NS, Canada
| | - Nicholas W. Jeffery
- Fisheries and Oceans Canada, Bedford Institute of Oceanography, Dartmouth, NS, Canada
| | - Naomi Kingston
- UN Environment Programme World Conservation Monitoring Centre, Cambridge, UK
| | - Heike K. Lotze
- Department of Biology, Dalhousie University, Halifax, NS, Canada
| | | | | | - Chris J. McOwen
- UN Environment Programme World Conservation Monitoring Centre, Cambridge, UK
| | - Bethan C. O’Leary
- School of Environment and Life Sciences, University of Salford, Manchester, UK
- Department of Environment and Geography, University of York, York, UK
| | - Laurenne Schiller
- Marine Affairs Program, Dalhousie University, Halifax, NS, Canada
- Ocean Wise, Vancouver, BC, Canada
| | - Ryan R. E. Stanley
- Fisheries and Oceans Canada, Bedford Institute of Oceanography, Dartmouth, NS, Canada
| | - Maxine Westhead
- Fisheries and Oceans Canada, Bedford Institute of Oceanography, Dartmouth, NS, Canada
| | | | - Boris Worm
- Department of Biology, Dalhousie University, Halifax, NS, Canada
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4
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Dunn DC, Harrison AL, Curtice C, DeLand S, Donnelly B, Fujioka E, Heywood E, Kot CY, Poulin S, Whitten M, Åkesson S, Alberini A, Appeltans W, Arcos JM, Bailey H, Ballance LT, Block B, Blondin H, Boustany AM, Brenner J, Catry P, Cejudo D, Cleary J, Corkeron P, Costa DP, Coyne M, Crespo GO, Davies TE, Dias MP, Douvere F, Ferretti F, Formia A, Freestone D, Friedlaender AS, Frisch-Nwakanma H, Froján CB, Gjerde KM, Glowka L, Godley BJ, Gonzalez-Solis J, Granadeiro JP, Gunn V, Hashimoto Y, Hawkes LM, Hays GC, Hazin C, Jimenez J, Johnson DE, Luschi P, Maxwell SM, McClellan C, Modest M, Notarbartolo di Sciara G, Palacio AH, Palacios DM, Pauly A, Rayner M, Rees AF, Salazar ER, Secor D, Sequeira AMM, Spalding M, Spina F, Van Parijs S, Wallace B, Varo-Cruz N, Virtue M, Weimerskirch H, Wilson L, Woodward B, Halpin PN. The importance of migratory connectivity for global ocean policy. Proc Biol Sci 2019; 286:20191472. [PMID: 31551061 PMCID: PMC6784718 DOI: 10.1098/rspb.2019.1472] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The distributions of migratory species in the ocean span local, national and international jurisdictions. Across these ecologically interconnected regions, migratory marine species interact with anthropogenic stressors throughout their lives. Migratory connectivity, the geographical linking of individuals and populations throughout their migratory cycles, influences how spatial and temporal dynamics of stressors affect migratory animals and scale up to influence population abundance, distribution and species persistence. Population declines of many migratory marine species have led to calls for connectivity knowledge, especially insights from animal tracking studies, to be more systematically and synthetically incorporated into decision-making. Inclusion of migratory connectivity in the design of conservation and management measures is critical to ensure they are appropriate for the level of risk associated with various degrees of connectivity. Three mechanisms exist to incorporate migratory connectivity into international marine policy which guides conservation implementation: site-selection criteria, network design criteria and policy recommendations. Here, we review the concept of migratory connectivity and its use in international policy, and describe the Migratory Connectivity in the Ocean system, a migratory connectivity evidence-base for the ocean. We propose that without such collaboration focused on migratory connectivity, efforts to effectively conserve these critical species across jurisdictions will have limited effect.
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Affiliation(s)
- Daniel C Dunn
- Nicholas School of the Environment, Duke University, Durham, NC, USA.,Centre for Biodiversity and Conservation Science, School of Earth and Environmental Sciences, University of Queensland, Level 5, Goddard Building (#8), St Lucia, Queensland 4072, Australia
| | - Autumn-Lynn Harrison
- Migratory Bird Center, Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC, USA
| | - Corrie Curtice
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Sarah DeLand
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Ben Donnelly
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Ei Fujioka
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Eleanor Heywood
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Connie Y Kot
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Sarah Poulin
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Meredith Whitten
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Susanne Åkesson
- Department of Biology, Center for Animal Movement Research, Lund University, Lund, Sweden
| | - Amalia Alberini
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Ward Appeltans
- Intergovernmental Oceanographic Commission (IOC) of UNESCO, IOC Project Office for IODE, Oostende, Belgium
| | | | - Helen Bailey
- Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, MD, USA
| | - Lisa T Ballance
- Southwest Fisheries Science Center, NOAA Fisheries, La Jolla, CA, USA.,Scripps Institution of Oceanography, La Jolla, CA, USA.,Marine Mammal Institute and Department of Fisheries and Wildlife, Oregon State University, Newport, OR, USA
| | - Barbara Block
- Hopkins Marine Station of Stanford University, Pacific Grove, CA, USA
| | - Hannah Blondin
- Nicholas School of the Environment, Duke University, Durham, NC, USA.,Hopkins Marine Station of Stanford University, Pacific Grove, CA, USA
| | | | | | - Paulo Catry
- MARE-Marine and Environmental Sciences Centre, ISPA Instituto Universitário, Lisboa, Portugal
| | - Daniel Cejudo
- Biology Department of the University of Las Palmas de Gran Canaria, Las Palmas, Spain
| | - Jesse Cleary
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Peter Corkeron
- Protected Species Branch, NOAA Northeast Fisheries Science Center, Woods Hole, MA, USA
| | - Daniel P Costa
- Dept of Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, CA, USA
| | - Michael Coyne
- seaturtle.org, University of California Santa Cruz, Santa Cruz, CA, USA
| | | | | | | | | | - Francesco Ferretti
- Hopkins Marine Station of Stanford University, Pacific Grove, CA, USA.,Department of Fish and Wildlife Conservation, College of Natural Resources and Environment, Virginia Tech, Blacksburg, VA, USA
| | - Angela Formia
- Wildlife Conservation Society, Bronx, NY, USA; Bata, Equatorial Guinea and Libreville, Gabon
| | | | - Ari S Friedlaender
- Dept of Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, CA, USA
| | - Heidrun Frisch-Nwakanma
- Secretariat of the Convention on Migratory Species of Wild Animals, Bonn, Germany and Abu Dhabi, United Arab Emirates
| | | | - Kristina M Gjerde
- IUCN Global Marine and Polar Programme and World Commission on Protected Areas, Cambridge, MA, USA
| | - Lyle Glowka
- Secretariat of the Convention on Migratory Species of Wild Animals, Bonn, Germany and Abu Dhabi, United Arab Emirates
| | - Brendan J Godley
- Centre for Ecology and Conservation, University of Exeter, Cornwall Campus, Penryn, UK
| | | | | | - Vikki Gunn
- GOBI Secretariat, Seascape Consultants Ltd, Romsey, UK
| | - Yuriko Hashimoto
- Canadian Wildlife Service, Environment and Climate Change Canada, Pacific Wildlife Research Centre, British Columbia, Canada
| | - Lucy M Hawkes
- Centre for Ecology and Conservation, University of Exeter, Cornwall Campus, Penryn, UK
| | - Graeme C Hays
- Centre for Integrative Ecology, Deakin University, Geelong, Victoria, Australia
| | | | | | | | | | - Sara M Maxwell
- School of Interdisciplinary Arts and Sciences, University of Washington, Bothell Campus, Bothell, WA, USA
| | | | - Michelle Modest
- Dept of Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, CA, USA
| | | | | | - Daniel M Palacios
- Marine Mammal Institute and Department of Fisheries and Wildlife, Oregon State University, Newport, OR, USA
| | - Andrea Pauly
- Secretariat of the Convention on Migratory Species of Wild Animals, Bonn, Germany and Abu Dhabi, United Arab Emirates
| | - Matt Rayner
- Auckland War Memorial Museum, Auckland, New Zealand
| | - Alan F Rees
- Centre for Ecology and Conservation, University of Exeter, Cornwall Campus, Penryn, UK
| | - Erick Ross Salazar
- Wildlife Conservation Society, Bronx, NY, USA; Bata, Equatorial Guinea and Libreville, Gabon
| | - David Secor
- Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, MD, USA
| | - Ana M M Sequeira
- UWA Oceans Institute and School of Biological Sciences, Indian Ocean Marine Research Centre, University of Western Australia, Crawley, Western Australia 6009, Australia
| | | | - Fernando Spina
- ISPRA-Istituto Superiore per la Protezione e la Ricerca Ambientale, Ozzano dell'Emilia, Italy
| | - Sofie Van Parijs
- Protected Species Branch, NOAA Northeast Fisheries Science Center, Woods Hole, MA, USA
| | - Bryan Wallace
- Nicholas School of the Environment, Duke University, Durham, NC, USA.,Ecolibrium, Inc, Boulder, CO, USA
| | - Nuria Varo-Cruz
- Biology Department of the University of Las Palmas de Gran Canaria, Las Palmas, Spain
| | - Melanie Virtue
- Secretariat of the Convention on Migratory Species of Wild Animals, Bonn, Germany and Abu Dhabi, United Arab Emirates
| | | | - Laurie Wilson
- Canadian Wildlife Service, Environment and Climate Change Canada, Pacific Wildlife Research Centre, British Columbia, Canada
| | - Bill Woodward
- U.S. Animal Telemetry Network, NOAA/IOOS, Silver Spring, MD, USA
| | - Patrick N Halpin
- Nicholas School of the Environment, Duke University, Durham, NC, USA
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5
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Yates KL, Bouchet PJ, Caley MJ, Mengersen K, Randin CF, Parnell S, Fielding AH, Bamford AJ, Ban S, Barbosa AM, Dormann CF, Elith J, Embling CB, Ervin GN, Fisher R, Gould S, Graf RF, Gregr EJ, Halpin PN, Heikkinen RK, Heinänen S, Jones AR, Krishnakumar PK, Lauria V, Lozano-Montes H, Mannocci L, Mellin C, Mesgaran MB, Moreno-Amat E, Mormede S, Novaczek E, Oppel S, Ortuño Crespo G, Peterson AT, Rapacciuolo G, Roberts JJ, Ross RE, Scales KL, Schoeman D, Snelgrove P, Sundblad G, Thuiller W, Torres LG, Verbruggen H, Wang L, Wenger S, Whittingham MJ, Zharikov Y, Zurell D, Sequeira AM. Outstanding Challenges in the Transferability of Ecological Models. Trends Ecol Evol 2018; 33:790-802. [DOI: 10.1016/j.tree.2018.08.001] [Citation(s) in RCA: 277] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 08/03/2018] [Accepted: 08/03/2018] [Indexed: 11/30/2022]
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6
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Crespo GO, Dunn DC, Reygondeau G, Boerder K, Worm B, Cheung W, Tittensor DP, Halpin PN. The environmental niche of the global high seas pelagic longline fleet. Sci Adv 2018; 4:eaat3681. [PMID: 30101192 PMCID: PMC6082651 DOI: 10.1126/sciadv.aat3681] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 07/14/2018] [Indexed: 05/09/2023]
Abstract
International interest in the protection and sustainable use of high seas biodiversity has grown in recent years. There is an opportunity for new technologies to enable improvements in management of these areas beyond national jurisdiction. We explore the spatial ecology and drivers of the global distribution of the high seas longline fishing fleet by creating predictive models of the distribution of fishing effort from newly available automatic identification system (AIS) data. Our results show how longline fishing effort can be predicted using environmental variables, many related to the expected distribution of the species targeted by longliners. We also find that the longline fleet has seasonal environmental preferences (for example, increased importance of cooler surface waters during boreal summer) and may only be using 38 to 64% of the available environmentally suitable fishing habitat. Possible explanations include misclassification of fishing effort, incomplete AIS coverage, or how potential range contractions of pelagic species may have reduced the abundance of fishing habitats in the open ocean.
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Affiliation(s)
- Guillermo Ortuño Crespo
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC 27708, USA
- Corresponding author.
| | - Daniel C. Dunn
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC 27708, USA
| | - Gabriel Reygondeau
- Nippon Foundation Nereus Program and Changing Ocean Research Unit, Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Kristina Boerder
- Department of Biology, Dalhousie University, Halifax, Nova Scotia B3H 4J1, Canada
| | - Boris Worm
- Department of Biology, Dalhousie University, Halifax, Nova Scotia B3H 4J1, Canada
| | - William Cheung
- Nippon Foundation Nereus Program and Changing Ocean Research Unit, Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Derek P. Tittensor
- Department of Biology, Dalhousie University, Halifax, Nova Scotia B3H 4J1, Canada
- United Nations Environment Programme World Conservation Monitoring Centre, 219 Huntingdon Road, Cambridge CB3 0DL, UK
| | - Patrick N. Halpin
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC 27708, USA
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