1
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Apete L, Martin OV, Iacovidou E. Fishing plastic waste: Knowns and known unknowns. MARINE POLLUTION BULLETIN 2024; 205:116530. [PMID: 38861797 DOI: 10.1016/j.marpolbul.2024.116530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/26/2024] [Accepted: 05/27/2024] [Indexed: 06/13/2024]
Abstract
Plastics entering the marine environment primarily originate from land-based sources, prompting significant attention on single-use plastic packaging. However, fishing plastic waste also contributes substantially to marine plastic pollution, though it is often overlooked in the literature due to the challenges in pinpointing pollution sources. This study addresses this key knowledge gap by synthesizing existing literature to explore and document the knowns and known unknowns surrounding fishing plastic waste's environmental, health, and socio-economic impacts. Through the development of a causal loop diagram, the study offers a preliminary understanding of the issue, serving as a foundation for a deeper exploration of the complexities within the fishing industry's plastic waste dynamics. Finally, the study highlights that short-sighted views and approaches are likely to lead to systemic failures. Therefore, it advocates for strategic and meaningful measures to tackle marine plastic pollution, emphasizing the critical importance of a holistic and integrated understanding of the various plastic waste streams infiltrating and polluting our oceans.
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Affiliation(s)
- Larisha Apete
- Division of Environmental Sciences, College of Health, Medicine and Life Sciences, Brunel University London, Kingston Lane, Uxbridge UB8 3PH, United Kingdom; Plastic Waste Innovation Hub, Department of Arts and Science, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Olwenn V Martin
- Plastic Waste Innovation Hub, Department of Arts and Science, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Eleni Iacovidou
- Division of Environmental Sciences, College of Health, Medicine and Life Sciences, Brunel University London, Kingston Lane, Uxbridge UB8 3PH, United Kingdom.
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2
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Franceschini S, Lynham J, Madin EMP. A global test of MPA spillover benefits to recreational fisheries. SCIENCE ADVANCES 2024; 10:eado9783. [PMID: 39028819 PMCID: PMC11259168 DOI: 10.1126/sciadv.ado9783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 06/13/2024] [Indexed: 07/21/2024]
Abstract
Marine protected areas (MPAs) have been identified as one of the most effective tools to halt marine biodiversity loss. However, conflicting evidence from disparate, small-scale studies obfuscate a cohesive global picture of the role that MPAs can play in enhancing local fisheries through spillover benefits. We conducted a global analysis of trophy-size fish catches as a proxy for spillover occurring outside of fully protected MPAs, focusing on time series of recreational angling catch records. We show that the accumulation of recreational fishing records accelerates close to MPAs (compared to reference areas) and that this effect grows stronger over time. Our results provide a standardized global assessment of one of the benefits MPAs provide to recreational anglers.
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Affiliation(s)
- Simone Franceschini
- Hawai‘i Institute of Marine Biology, University of Hawai‘i at Mānoa, Kāne‘ohe, HI, USA
| | - John Lynham
- Department of Economics and UHERO, University of Hawai‘i at Mānoa, Honolulu, HI, USA
| | - Elizabeth M. P. Madin
- Hawai‘i Institute of Marine Biology, University of Hawai‘i at Mānoa, Kāne‘ohe, HI, USA
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3
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Grossmark Y, Azriali Zohar B, Barash A, Portman ME. Incorporation of human-wildlife interactions in ecosystem-based management to enhance conservation of endangered guitarfish. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2024:e14327. [PMID: 38989837 DOI: 10.1111/cobi.14327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 03/12/2024] [Accepted: 03/16/2024] [Indexed: 07/12/2024]
Abstract
Growing human use of the marine environment increases the proximity of humans to marine wildlife and thus likely increases human-wildlife interactions. Such interactions influence perceptions of nature and promote or undermine conservation. Despite their importance, human-wildlife interactions are rarely considered in ecosystem-based marine spatial planning (MSP). Ideally, these interactions should be identified and considered in ecosystem-based management (EBM), which is often purported to be the basis for MSP. We used Marxan software and data from a citizen science project documenting location, species, age, sex, and activity type to identify regions along Israel's coast with a high probability of encounters between people and 2 species of guitarfish. We considered the geographic distribution of these encounters and the various activities undertaken by the reporting observers. We ran 4 scenarios in Marxan. Two had conservation goals of 30% and 50% guitarfish habitat protection. In the third and fourth scenarios, we added a 50% conservation goal of human leisure activities to each guitarfish conservation goal. We also conducted a gap analysis between our guitarfish conservation goals and the Israel Nature and Parks Authority's master plan for marine protected areas. We found the park authority was close to meeting the 30% goal but was far from meeting the conservation goal of 50% of guitarfish habitat conservation. Different human uses were more likely to interact with different life stages of guitarfish, and different recreational activities occurred in different areas. Identifying areas of specific human use showed which activities should be addressed in conservation management decisions. Our addition of certain recreational uses to the model of habitat conservation showed how enhancing human dimensions in conservation planning can lead to more holistic ecosystem-based conservation necessary for effective marine planning.
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Affiliation(s)
- Yaara Grossmark
- MarCoast Ecosystems Integration Lab, Technion - Israel Institute of Technology, Haifa, Israel
| | | | - Adi Barash
- Sharks in Israel (NGO), Kibbutz Amir, Israel
| | - Michelle E Portman
- MarCoast Ecosystems Integration Lab, Technion - Israel Institute of Technology, Haifa, Israel
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4
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Ochwada-Doyle FA, Miles N, Hughes JM, Murphy JJ, Lowry MB, West L, Taylor MD. Exploring spatio-temporal changes in coastal recreational fisheries and potential links to extreme weather events. PLoS One 2024; 19:e0305106. [PMID: 38848391 PMCID: PMC11161121 DOI: 10.1371/journal.pone.0305106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 05/24/2024] [Indexed: 06/09/2024] Open
Abstract
Extreme weather events across coastal environments are expected to increase in frequency under predicted climate change scenarios. These events can impact coastal recreational fisheries and their supporting ecosystems by influencing the productivity of fish stocks or altering behaviours and decision-making among fishers. Using off-site telephone/diary survey data on estuarine and oceanic recreational fishing activity in eastern Australia, we analyse interannual and geographic variability in bream (Acanthopagrus spp) and snapper (Chrysophrys auratus) catch, total effort and total catch per unit effort (CPUE) through a period (2013/2014, 2017/2018 and 2019/2020) that encompassed severe drought, bushfires and flooding. Interacting spatial and temporal differences were detected for bream and may reflect spatial variation in the intensity and extent of some of the extreme weather events. The catch of snapper did not change temporally, providing little evidence that this species' catch may be influenced by the extreme weather events. Independent bioregional and temporal effects on effort were detected, while CPUE only showed significant bioregional differences. Although adverse conditions created by the extreme weather events may have dissuaded fisher participation and impacted effort, we propose that the observed temporal patterns in effort reflect the early influence of socio-economic changes brought on by the COVID-19 pandemic on coastal recreational fishing, over and above the impacts of extreme weather events. This study demonstrates how interrelated ecological, social and economic factors can shape coastal recreational fisheries and facilitates development of management strategies to address future threats to the sector.
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Affiliation(s)
- Faith A. Ochwada-Doyle
- New South Wales Department of Primary Industries, Sydney Institute of Marine Science, Mosman, NSW, Australia
- Kewagama Research, Doonan, Queensland, Australia
| | - Nathan Miles
- New South Wales Department of Primary Industries, Narrandera, NSW, Australia
| | - Julian M. Hughes
- New South Wales Department of Primary Industries, Sydney Institute of Marine Science, Mosman, NSW, Australia
| | - Jeffrey J. Murphy
- New South Wales Department of Primary Industries, Wollongong, New South Wales, Australia
| | - Michael B. Lowry
- New South Wales Department of Primary Industries, Port Stephens, New South Wales, Australia
| | - Laurie West
- Kewagama Research, Doonan, Queensland, Australia
| | - Matthew D. Taylor
- New South Wales Department of Primary Industries, Port Stephens, New South Wales, Australia
- University of New South Wales, Kensington, New South Wales, Australia
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5
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Lynch AJ, Embke HS, Nyboer EA, Wood LE, Thorpe A, Phang SC, Viana DF, Golden CD, Milardi M, Arlinghaus R, Baigun C, Beard TD, Cooke SJ, Cowx IG, Koehn JD, Lyach R, Potts W, Robertson AM, Schmidhuber J, Weyl OLF. Inland recreational fisheries contribute nutritional benefits and economic value but are vulnerable to climate change. NATURE FOOD 2024; 5:433-443. [PMID: 38741002 DOI: 10.1038/s43016-024-00961-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 03/12/2024] [Indexed: 05/16/2024]
Abstract
Inland recreational fishing is primarily considered a leisure-driven activity in freshwaters, yet its harvest can contribute to food systems. Here we estimate that the harvest from inland recreational fishing equates to just over one-tenth of all reported inland fisheries catch globally. The estimated total consumptive use value of inland recreational fish destined for human consumption may reach US$9.95 billion annually. We identify Austria, Canada, Germany and Slovakia as countries above the third quantile for nutrition, economic value and climate vulnerability. These results have important implications for populations dependent on inland recreational fishing for food. Our findings can inform climate adaptation planning for inland recreational fisheries, particularly those not currently managed as food fisheries.
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Affiliation(s)
- Abigail J Lynch
- National Climate Adaptation Science Center, United States Geological Survey, Reston, VA, USA.
| | - Holly S Embke
- Midwest Climate Adaptation Science Center, United States Geological Survey, St. Paul, MN, USA
| | - Elizabeth A Nyboer
- Canadian Centre for Evidence-Based Conservation, Department of Biology and Institute of Environmental and Interdisciplinary Science, Carleton University, Ottawa, Ontario, Canada
- Department of Fish and Wildlife Conservation, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Louisa E Wood
- Centre for Blue Governance, University of Portsmouth, Portsmouth, UK
| | - Andy Thorpe
- Centre for Blue Governance, University of Portsmouth, Portsmouth, UK
| | | | - Daniel F Viana
- Department of Nutrition, Department of Environmental Health, Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Christopher D Golden
- Department of Nutrition, Department of Environmental Health, Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Marco Milardi
- Southern Indian Ocean Fisheries Agreement (SIOFA/APSOI), Saint-Denis, France
| | - Robert Arlinghaus
- Department of Fish Biology, Fisheries and Aquaculture, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany
- Division of Integrative Fisheries Management, Faculty of Life Sciences, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Claudio Baigun
- Institute of Environmental Research and Engineering, National University of San Martin-CONICET, Buenos Aires, Argentina
| | - T Douglas Beard
- National Climate Adaptation Science Center, United States Geological Survey, Reston, VA, USA
| | - Steven J Cooke
- Canadian Centre for Evidence-Based Conservation, Department of Biology and Institute of Environmental and Interdisciplinary Science, Carleton University, Ottawa, Ontario, Canada
| | - Ian G Cowx
- International Fisheries Institute, University of Hull, Hull, UK
| | - John D Koehn
- Applied Aquatic Ecology, Arthur Rylah Institute for Environmental Research, Department of Energy, Environment and Climate Action, Heidelberg, Victoria, Australia
- Gulbali Institute for Agriculture, Water and Environment, Charles Sturt University, Albury, New South Wales, Australia
| | - Roman Lyach
- Institute for Evaluations and Social Analyses (INESAN), Prague, Czech Republic
| | - Warren Potts
- Department of Ichthyology and Fisheries Science, Rhodes University, Makhanda, South Africa
- South African Institute for Aquatic Biodiversity, Makhanda, South Africa
| | - Ashley M Robertson
- Department of Environmental Science and Policy, George Mason University, Fairfax, VA, USA
| | | | - Olaf L F Weyl
- South African Institute for Aquatic Biodiversity, Makhanda, South Africa
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6
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Koemle D, Gassler B, Kyle G, Meyerhoff J, Arlinghaus R. How involvement drives decision rules behind stated preferences for recreational-fisheries management. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119604. [PMID: 37984270 DOI: 10.1016/j.jenvman.2023.119604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 11/10/2023] [Accepted: 11/10/2023] [Indexed: 11/22/2023]
Abstract
This paper connects the concept of involvement with recreational fishing and decision rules, namely regret-minimizing vs. utility-maximizing when making choices related to the activity. We hypothesized that people who are more involved show regret-minimizing rather than utility-maximizing behavior. In support, we found that behavioral commitment, measured as avidity in fishing, and psychological involvement (measured by centrality of angling in the lifestyle of the respondent) was significantly related to the decision rule, correlating with regret-minimizing behavior, while skill, specific attitudes toward the catch and place attachment were unrelated to the decision rules that respondents followed. In our sample, regret-minimizers were dominant and preferred more restrictive harvest policies (i.e., lower daily bag limits or harvest slots over minimum-size limits). Welfare estimates of policy changes were sensitive to the decision rule and were substantially lower when assuming regret minimizing behavior than when assuming utility maximization. We conclude that regret-minimizing behavior may be a characteristic of more involved anglers, with relevant implications for welfare estimation and derivation of policy advice.
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Affiliation(s)
- Dieter Koemle
- Leibniz Institute of Freshwater Ecology and Inland Fisheries, Department of Fish Biology, Fisheries and Aquaculture, Müggelseedamm 310, 12587, Berlin, Germany.
| | - Birgit Gassler
- Justus-Liebig-Universität Giessen, Senckenbergstr. 3, 35390, Gießen, Germany.
| | - Gerard Kyle
- Texas A&M University, 3147 TAMU, College Station, TX, 77843-3147, USA.
| | - Jürgen Meyerhoff
- Hochschule für Wirtschaft und Recht Berlin (HWR), Badensche Straße 52, 10825, Berlin, Germany.
| | - Robert Arlinghaus
- Leibniz Institute of Freshwater Ecology and Inland Fisheries, Department of Fish Biology, Fisheries and Aquaculture, Müggelseedamm 310, 12587, Berlin, Germany; Humboldt-Universität zu Berlin, Faculty of Life Sciene, Division of Integrative Fisheries Management, Philippstraße 13 (Haus 7), 10115, Berlin, Germany.
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7
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Audzijonyte A, Mateos-González F, Dainys J, Gundelund C, Skov C, Tyrell DeWeber J, Venturelli P, Vienožinskis V, Smith C. High-resolution app data reveal sustained increases in recreational fishing effort in Europe during and after COVID-19 lockdowns. ROYAL SOCIETY OPEN SCIENCE 2023; 10:230408. [PMID: 37476517 PMCID: PMC10354473 DOI: 10.1098/rsos.230408] [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: 03/31/2023] [Accepted: 06/27/2023] [Indexed: 07/22/2023]
Abstract
It is well recognized that COVID-19 lockdowns impacted human interactions with natural ecosystems. One example is recreational fishing, which, in developed countries, involves approximately 10% of people. Fishing licence sales and observations at angling locations suggest that recreational fishing effort increased substantially during lockdowns. However, the extent and duration of this increase remain largely unknown. We used four years (2018-2021) of high-resolution data from a personal fish-finder device to explore the impact of COVID-19 lockdowns on angling effort in four European countries. We show that relative device use and angling effort increased 1.2-3.8-fold during March-May 2020 and generally remained elevated even at the end of 2021. Fishing during the first lockdown also became more frequent on weekdays. Statistical models explained 50-70% of the variation, suggesting that device use and angling effort were relatively consistent and predictable through space and time. Our study demonstrates that recreational fishing behaviour can change substantially and rapidly in response to societal shifts, with profound ecological, human well-being and economic implications. We also show the potential of angler devices and smartphone applications for high-resolution fishing effort analysis and encourage more extensive science and industry collaborations to take advantage of this information.
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Affiliation(s)
- Asta Audzijonyte
- Institute for Marine and Antarctic Studies, University of Tasmania, Tasmania, Australia
- Nature Research Centre, Akademijos 2, Vilnius, Lithuania
- Centre for Marine Socioecology, Tasmania, Australia
| | - Fernando Mateos-González
- Institute for Marine and Antarctic Studies, University of Tasmania, Tasmania, Australia
- ALKA Wildlife, Lidéřovice, Czech Republic
| | - Justas Dainys
- Institute for Marine and Antarctic Studies, University of Tasmania, Tasmania, Australia
| | - Casper Gundelund
- Section of Freshwater Fisheries and Ecology, Technical University of Denmark, Denmark
| | - Christian Skov
- Section of Freshwater Fisheries and Ecology, Technical University of Denmark, Denmark
| | - J. Tyrell DeWeber
- Potsdam Institute of Inland Fisheries, Im Königswald 2, Potsdam, Germany
| | - Paul Venturelli
- Department of Biology, Ball State University, Muncie 47306, IN, USA
| | | | - Carl Smith
- Institute for Marine and Antarctic Studies, University of Tasmania, Tasmania, Australia
- Department of Ecology and Vertebrate Zoology, University of Łódź, Łódź, Poland
- Institute of Vertebrate Biology of the Czech Academy of Sciences, Brno, Czech Republic
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8
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Britton JR, Pinder AC, Alós J, Arlinghaus R, Danylchuk AJ, Edwards W, Freire KMF, Gundelund C, Hyder K, Jarić I, Lennox R, Lewin WC, Lynch AJ, Midway SR, Potts WM, Ryan KL, Skov C, Strehlow HV, Tracey SR, Tsuboi JI, Venturelli PA, Weir JL, Weltersbach MS, Cooke SJ. Global responses to the COVID-19 pandemic by recreational anglers: considerations for developing more resilient and sustainable fisheries. REVIEWS IN FISH BIOLOGY AND FISHERIES 2023:1-17. [PMID: 37360579 PMCID: PMC10227408 DOI: 10.1007/s11160-023-09784-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 05/01/2023] [Indexed: 06/28/2023]
Abstract
The global COVID-19 pandemic resulted in many jurisdictions implementing orders restricting the movements of people to inhibit virus transmission, with recreational angling often either not permitted or access to fisheries and/or related infrastructure being prevented. Following the lifting of restrictions, initial angler surveys and licence sales suggested increased participation and effort, and altered angler demographics, but with evidence remaining limited. Here, we overcome this evidence gap by identifying temporal changes in angling interest, licence sales, and angling effort in world regions by comparing data in the 'pre-pandemic' (up to and including 2019); 'acute pandemic' (2020) and 'COVID-acclimated' (2021) periods. We then identified how changes can inform the development of more resilient and sustainable recreational fisheries. Interest in angling (measured here as angling-related internet search term volumes) increased substantially in all regions during 2020. Patterns in licence sales revealed marked increases in some countries during 2020 but not in others. Where licence sales increased, this was rarely sustained in 2021; where there were declines, these related to fewer tourist anglers due to movement restrictions. Data from most countries indicated a younger demographic of people who participated in angling in 2020, including in urban areas, but this was not sustained in 2021. These short-lived changes in recreational angling indicate efforts to retain younger anglers could increase overall participation levels, where efforts can target education in appropriate angling practices and create more urban angling opportunities. These efforts would then provide recreational fisheries with greater resilience to cope with future global crises, including facilitating the ability of people to access angling opportunities during periods of high societal stress. Supplementary Information The online version contains supplementary material available at 10.1007/s11160-023-09784-5.
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Affiliation(s)
- J. Robert Britton
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, BH12 5BB UK
| | - Adrian C. Pinder
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, BH12 5BB UK
| | - Josep Alós
- Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC–UIB), Esporles, Spain
| | - Robert Arlinghaus
- Department of Fish Biology, Fisheries and Aquaculture, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany
- Division of Integrative Fisheries Management, Faculty of Life Sciences, Humboldt-Univesität zu Berlin, Invalidenstrasse 42, 10115 Berlin, Germany
| | - Andy J. Danylchuk
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003 USA
| | - Wendy Edwards
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Pakefield Road, Lowestoft, NR33 0HT Suffolk UK
| | - Kátia M. F. Freire
- Department of Fisheries Engineering and Aquaculture, Universidade Federal de Sergipe, Cidade Universitária Prof. José Aloísio de Campos, Rua Mal. Rondon S/N, Jardim Rosa Elze São Cristóvão, Sergipe CEP 49100-000 Brazil
| | - Casper Gundelund
- Section of Freshwater Fisheries and Ecology, Technical University of Denmark, DTU Aqua, 8600 Silkeborg, Denmark
| | - Kieran Hyder
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Pakefield Road, Lowestoft, NR33 0HT Suffolk UK
- School of Environmental Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ Norfolk UK
| | - Ivan Jarić
- Biology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, Na Sádkách 702/7, 37005 České Budějovice, Czech Republic
- Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique Evolution, 12 Rue 128, 91190 Gif-Sur-Yvette, France
| | - Robert Lennox
- Norwegian Institute for Nature Research and at the Laboratory for Freshwater Ecology, Oslo, Norway
| | - Wolf-Christian Lewin
- Thünen Institute of Baltic Sea Fisheries, Alter Hafen Süd 2, 18069 Rostock, Germany
| | - Abigail J. Lynch
- U.S. Geological Survey, National Climate Adaptation Science Center, 12201 Sunrise Valley Drive MS 516, Reston, VA 20192 USA
| | - Stephen R. Midway
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803 USA
| | - Warren M. Potts
- Department of Ichthyology and Fisheries Science, Rhodes University, P.O. Box 94, Makhanda, 6140 South Africa
| | - Karina L. Ryan
- Department of Primary Industries and Regional Development, Western Australian Fisheries and Marine Research Laboratories, 39 Northside Drive, Hillarys, WA 6025 Australia
| | - Christian Skov
- Section of Freshwater Fisheries and Ecology, Technical University of Denmark, DTU Aqua, 8600 Silkeborg, Denmark
| | - Harry V. Strehlow
- Thünen Institute of Baltic Sea Fisheries, Alter Hafen Süd 2, 18069 Rostock, Germany
| | - Sean R. Tracey
- Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 49, Hobart7001, TAS Australia
- Centre For Marine Socioecology, University of Tasmania, Private Bag 49, Hobart7001, TAS Australia
| | - Jun-ichi Tsuboi
- Research Center for Freshwater Fisheries, Japan Fish Res and Education Agency, Nikko, 321-1661 Japan
| | | | - Jessica L. Weir
- Department of Biology, Ball State University, Muncie, IN 47304 USA
| | | | - 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
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9
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Rambonilaza T, Kerouaz F, Boschet C. Recreational anglers' preferences about harvest regulations to protect a threatened freshwater fish in France. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 332:117356. [PMID: 36701828 DOI: 10.1016/j.jenvman.2023.117356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 01/05/2023] [Accepted: 01/22/2023] [Indexed: 06/17/2023]
Abstract
A number of freshwater fish particularly migratory species are currently under threat. As the pressure of recreational fishing has intensified, this activity needs to be more regulated to halt the decline of threatened fish stocks. This paper presents results of an economic valuation study of anglers' preferences for a change in the rules applying to Twaite shad fisheries in south-western France. Twaite shad has become a "near-threatened" species, with the same IUCN status as the Atlantic salmon. As shad recreational angling continues to be open access, new regulations are required to limit recreational harvest in support of a management strategy to prevent stock reduction even to foster stock recovery. We combined a deliberative choice experiment with open group discussion to obtain an in-depth understanding of anglers' preferences between two types of traditional regulatory instrument - a license fee or a bag limit. The closure of the fishery served as the reference scenario. The results indicate that the majority of anglers were aware of the decline of Twaite shad stocks. The recreational value of the species remains high, especially for those who already target migratory species. Although econometric estimations show that there are heterogeneous preferences across anglers, there were support for a change toward a bag limit, and an aversion for a high-priced licence fee. The findings also provided two key insights to improve recreational fishing management and preservation policy for threatened species. The communication of observation data on fish stock could not be considered as a sufficient ecological information to ensure threatened species monitoring leads to an effective co-management with anglers' community. Anglers' aversion to loss can be seen as a behaviour mechanism towards the preservation of the species rather than to its use.
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Affiliation(s)
- Tina Rambonilaza
- CESAER, INRAE, L'Institut Agro Dijon, Univ. Bourgogne Franche-Comté, 26 Bd Docteur Petitjean, F-21000, Dijon, France.
| | - Fathallah Kerouaz
- Bordeaux School of Economics, Univ. Bordeaux, Avenue Léon Duguit, F-33608 PESSAC, France.
| | - Christophe Boschet
- INRAE, UR ETTIS, 50 avenue de Verdun Gazinet, F-33612 Cestas cedex, France.
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10
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Grabowski T, Benedum ME, Curley A, Dill-De Sa C, Shuey M. Pandemic-driven changes in the nearshore non-commercial fishery in Hawai’i: catch photos posted to social media capture changes in fisher behavior. PeerJ 2023; 11:e14994. [PMID: 37009159 PMCID: PMC10064990 DOI: 10.7717/peerj.14994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 02/12/2023] [Indexed: 03/30/2023] Open
Abstract
Using social media, we collect evidence for how nearshore fisheries are impacted by the global COVID-19 pandemic in Hawai’i. We later confirm our social media findings and obtain a more complete understanding of the changes in nearshore non-commercial fisheries in Hawai’i through a more conventional approach—speaking directly with fishers. Resource users posted photographs to social media nearly three times as often during the pandemic with nearly double the number of fishes pictured per post. Individuals who fished for subsistence were more likely to increase the amount of time spent fishing and relied more on their catch for food security. Furthermore, individuals fishing exclusively for subsistence were more likely to fish for different species during the pandemic than individuals fishing recreationally. Traditional data collection methods are resource-intensive and this study shows that during times of rapid changes, be it ecological or societal, social media can more quickly identify how near shore marine resource use adapts. As climate change threatens additional economic and societal disturbances, it will be necessary for resource managers to collect reliable data efficiently to better target monitoring and management efforts.
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Affiliation(s)
- Timothy Grabowski
- U.S. Geological Survey, Hawai’i Cooperative Fishery Research Unit, University of Hawaii at Hilo, Hilo, Hawai’i, United States
| | - Michelle E. Benedum
- Political Science, University of Colorado at Boulder, Boulder, Colorado, United States
| | - Andrew Curley
- Anthropology Department, University of Hawaii at Hilo, Hilo, Hawai’i, United States
| | - Cole Dill-De Sa
- Earth Systems Program, Stanford University, Stanford, California, United States
| | - Michelle Shuey
- Department of Geography and Environmental Sciences, University of Hawaii at Hilo, Hilo, Hawai’i, United States
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11
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Parasites either reduce or increase host vulnerability to fishing: a case study of a parasitic copepod and its salmonid host. THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 2023; 110:10. [PMID: 36809376 DOI: 10.1007/s00114-023-01836-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/23/2023]
Abstract
Parasites generally increase host vulnerability to predators via host manipulation for trophic transmission and reduction of host activities. Predators also select prey depending on the parasite infection status. Despite such parasites' roles in prey-predator interactions in wild animals, how parasites affect human hunting probability and resource consumption remains unknown. We examined the effects of the ectoparasitic copepod Salmincola cf. markewitschi on fish vulnerability to angling. We found that infected fish were less vulnerable compared with non-infected fish when the fish body condition was low, which was probably due to reduced foraging activity. On the contrary, infected fish were more vulnerable when the host body condition was high, probably due to the compensation of parasites' negative effects. A Twitter analysis also suggested that people avoided eating fish with parasites and that anglers' satisfaction decreased when captured fish were parasitized. Thus, we should consider how animal hunting is affected by parasites not only for catchability but also for avoiding parasite infection sources in many local regions.
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12
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Polgar G, Iaia M, Sala P, Khang TF, Galafassi S, Zaupa S, Volta P. Size-age population structure of an endangered and anthropogenically introgressed northern Adriatic population of marble trout ( Salmo marmoratus Cuv.): insights for its conservation and sustainable exploitation. PeerJ 2023; 11:e14991. [PMID: 36949764 PMCID: PMC10026717 DOI: 10.7717/peerj.14991] [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: 07/29/2022] [Accepted: 02/12/2023] [Indexed: 03/19/2023] Open
Abstract
Salmonid species are main actors in the Italian socio-ecological landscape of inland fisheries. We present novel data on the size-age structure of one of the remnant Italian populations of the critically endangered marble trout Salmo marmoratus, which co-occurs with other stocked non-native salmonids in a large glacial river of the Lake Maggiore basin (Northern Italy-Southern Switzerland). Like other Italian native trout populations, the Toce River marble trout population is affected by anthropogenic introgression with the non-native brown trout S. trutta. Our sample includes 579 individuals, mainly collected in the Toce River main channel. We estimated the length-weight relationship, described the population size-age structure, estimated the age-specific growth trajectories, and fit an exponential mortality model. A subset of the sample was also used to measure numerical and biomass density. The estimated asymptotic maximum length is ~105 cm total length (TL). Mean length at first maturity is ~55 cm TL, and mean length at maximum yield per recruit is ~68 cm TL. Approximately 45-70% of the population are estimated to die annually, along with a fishing annual mortality of ~37%, with an exploitation ratio of ~0.5. The frequency distribution of length classes in a sample collected by angling shows that ~80% of the individuals that could be retained according to the current recreational fishing regulations likely never reproduced, and large fish disproportionally contributing to recruitment are fished and retained. We identify possible overfishing risks posed by present regulations, and propose updated harvest-slot length limits to mitigate such risks. More detailed and long-term datasets on this system are needed to more specifically inform the fishery management and monitor the effects of any change in the management strategy on the size-age structure of the marble trout population of the Toce River.
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Affiliation(s)
- Gianluca Polgar
- Water Research Institute (IRSA)—CNR, Verbania Pallanza, VB, Italy
| | - Mattia Iaia
- Water Research Institute (IRSA)—CNR, Verbania Pallanza, VB, Italy
| | - Paolo Sala
- Water Research Institute (IRSA)—CNR, Verbania Pallanza, VB, Italy
| | - Tsung Fei Khang
- Institute of Mathematical Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
- Universiti Malaya Centre for Data Analytics, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Silvia Galafassi
- Water Research Institute (IRSA)—CNR, Verbania Pallanza, VB, Italy
| | - Silvia Zaupa
- Water Research Institute (IRSA)—CNR, Verbania Pallanza, VB, Italy
| | - Pietro Volta
- Water Research Institute (IRSA)—CNR, Verbania Pallanza, VB, Italy
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13
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Skrzypczak AR, Karpiński EA, Józefacka NM, Podstawski R. Impact of Personal Experience of COVID-19 Disease on Recreational Anglers' Attitudes and Behaviors. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16551. [PMID: 36554431 PMCID: PMC9779481 DOI: 10.3390/ijerph192416551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/01/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Anglers are a large social group with access to a "relatively safe" form of recreation, that allows the opportunity to relieve stress. An important question, however, is how they did so, and to what extent their perceived COVID-19 transition status influenced decisions both in life and at the fishing site. AIM Our study aimed to determine the dynamics of anglers' attitudes and behaviors during the COVID-19 pandemic as a result of the different statuses of their exposure to the SARS-CoV-2 virus. We assumed that the behavior of anglers who have not experienced the disease (were not ill and not sure if ill) will be similar and, on the other hand, different from the behavior of those who have experienced COVID-19. METHODS The web-assisted interviews survey was used among 586 anglers with different COVID-19 disease experience statuses. Their pandemic behavior and activities by four age groups were studied using non-metric multidimensional scaling. Redundancy analysis has been used to identify the relationship between anglers' life attitudes and socioeconomic and demographic factors, taking into account their preferences and involvement in fishing. RESULTS We have demonstrated that the behavior of anglers who have not experienced COVID-19 disease and do not present a reckless attitude toward pandemic threats, do not show significant differences from the life attitudes of the group experienced by the SARS-CoV-2 virus. These two groups comprise more than 70% of anglers. However, the rest show a lack of interest in an aware diagnosis of their health and a low level of acceptance of self-restraint in the area of direct social contact. CONCLUSIONS Unawareness, combined with ignorance, could be a potential factor in the transmission of the virus while fishing. The behaviors of almost 30% of anglers are particularly risky when combined with a strong need to fish in the company of friends and familiar people. Anglers' social identity should be tapped by fishery managers. Targeted educational campaigns should be aimed at groups around specific fishing spots. The need for self-limitation under the pandemic should be promoted for the benefit of the general public and to maintain the reputation of angling as a safe recreational activity.
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Affiliation(s)
- Andrzej Robert Skrzypczak
- Department of Tourism, Recreation & Ecology, Institute of Engineering and Environmental Protection, University of Warmia and Mazury, Oczapowskiego St. 5, 10-719 Olsztyn, Poland
| | - Emil Andrzej Karpiński
- Department of Tourism, Recreation & Ecology, Institute of Engineering and Environmental Protection, University of Warmia and Mazury, Oczapowskiego St. 5, 10-719 Olsztyn, Poland
| | - Natalia Maja Józefacka
- Institute of Psychology, Pedagogical University of Krakow, Podchorążych 2, 30-084 Krakow, Poland
| | - Robert Podstawski
- Department of Tourism, Recreation & Ecology, Institute of Engineering and Environmental Protection, University of Warmia and Mazury, Oczapowskiego St. 5, 10-719 Olsztyn, Poland
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14
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Alós J, Aarestrup K, Abecasis D, Afonso P, Alonso-Fernandez A, Aspillaga E, Barcelo-Serra M, Bolland J, Cabanellas-Reboredo M, Lennox R, McGill R, Özgül A, Reubens J, Villegas-Ríos D. Toward a decade of ocean science for sustainable development through acoustic animal tracking. GLOBAL CHANGE BIOLOGY 2022; 28:5630-5653. [PMID: 35929978 PMCID: PMC9541420 DOI: 10.1111/gcb.16343] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 06/10/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
The ocean is a key component of the Earth's dynamics, providing a great variety of ecosystem services to humans. Yet, human activities are globally changing its structure and major components, including marine biodiversity. In this context, the United Nations has proclaimed a Decade of Ocean Science for Sustainable Development to tackle the scientific challenges necessary for a sustainable use of the ocean by means of the Sustainable Development Goal 14 (SDG14). Here, we review how Acoustic animal Tracking, a widely distributed methodology of tracking marine biodiversity with electronic devices, can provide a roadmap for implementing the major Actions to achieve the SDG14. We show that acoustic tracking can be used to reduce and monitor the effects of marine pollution including noise, light, and plastic pollution. Acoustic tracking can be effectively used to monitor the responses of marine biodiversity to human-made infrastructures and habitat restoration, as well as to determine the effects of hypoxia, ocean warming, and acidification. Acoustic tracking has been historically used to inform fisheries management, the design of marine protected areas, and the detection of essential habitats, rendering this technique particularly attractive to achieve the sustainable fishing and spatial protection target goals of the SDG14. Finally, acoustic tracking can contribute to end illegal, unreported, and unregulated fishing by providing tools to monitor marine biodiversity against poachers and promote the development of Small Islands Developing States and developing countries. To fully benefit from acoustic tracking supporting the SDG14 Targets, trans-boundary collaborative efforts through tracking networks are required to promote ocean information sharing and ocean literacy. We therefore propose acoustic tracking and tracking networks as relevant contributors to tackle the scientific challenges that are necessary for a sustainable use of the ocean promoted by the United Nations.
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Affiliation(s)
- Josep Alós
- Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-UIB), Esporles, Spain
| | - Kim Aarestrup
- Section for Freshwater Fisheries and Ecology, National Institute of Aquatic Resources, Technical University of Denmark, Silkeborg, Denmark
| | - David Abecasis
- Center of Marine Sciences, Universidade do Algarve (CCMAR), Faro, Portugal
| | - Pedro Afonso
- Institute of Marine Research (IMAR/Okeanos), University of the Azores, Horta, Portugal
| | | | - Eneko Aspillaga
- Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-UIB), Esporles, Spain
| | | | - Jonathan Bolland
- Hull International Fisheries Institute, University of Hull, Hull, UK
| | | | - Robert Lennox
- NORCE Norwegian Research Center AS, Bergen, Norway
- Norwegian Institute for Nature Research, Trondheim, Norway
| | | | - Aytaç Özgül
- Ege University, Faculty of Fisheries, Izmir, Turkey
| | | | - David Villegas-Ríos
- Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-UIB), Esporles, Spain
- Instituto de Investigaciones Marinas (IIM), CSIC, Vigo, Spain
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15
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Cline TJ, Muhlfeld CC, Kovach R, Al-Chokhachy R, Schmetterling D, Whited D, Lynch AJ. Socioeconomic resilience to climatic extremes in a freshwater fishery. SCIENCE ADVANCES 2022; 8:eabn1396. [PMID: 36070376 PMCID: PMC9451147 DOI: 10.1126/sciadv.abn1396] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
Heterogeneity is a central feature of ecosystem resilience, but how this translates to socioeconomic resilience depends on people's ability to track shifting resources in space and time. Here, we quantify how climatic extremes have influenced how people (fishers) track economically valuable ecosystem services (fishing opportunities) across a range of spatial scales in rivers of the northern Rocky Mountains, USA, over the past three decades. Fishers opportunistically shifted from drought-sensitive to drought-resistant rivers during periods of low streamflows and warm temperatures. This adaptive behavior stabilized fishing pressure and expenditures by a factor of 2.6 at the scale of the regional fishery (i.e., portfolio effect). However, future warming is predicted to homogenize habitat options that enable adaptive behavior by fishers, putting ~30% of current spending at risk across the region. Maintaining a diverse portfolio of fishing opportunities that enable people to exploit shifting resources provides an important resilience mechanism for mitigating the socioeconomic impacts of climate change on fisheries.
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Affiliation(s)
- Timothy J. Cline
- Northern Rocky Mountain Science Center, U.S. Geological Survey, West Glacier, MT, USA
| | - Clint C. Muhlfeld
- Northern Rocky Mountain Science Center, U.S. Geological Survey, West Glacier, MT, USA
- Flathead Lake Biological Station, University of Montana, Polson, MT, USA
| | - Ryan Kovach
- Montana Fish, Wildlife & Parks, Missoula, MT, USA
| | - Robert Al-Chokhachy
- U.S. Geological Survey, Northern Rocky Mountain Science Center, Bozeman, MT, USA
| | | | - Diane Whited
- Flathead Lake Biological Station, University of Montana, Polson, MT, USA
| | - Abigail J. Lynch
- National Climate Adaptation Science Center, U.S. Geological Survey, Reston, VA, USA
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16
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Global dataset of species-specific inland recreational fisheries harvest for consumption. Sci Data 2022; 9:488. [PMID: 35948590 PMCID: PMC9365780 DOI: 10.1038/s41597-022-01604-y] [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: 02/08/2022] [Accepted: 08/02/2022] [Indexed: 11/08/2022] Open
Abstract
Inland recreational fisheries, found in lakes, rivers, and other landlocked waters, are important to livelihoods, nutrition, leisure, and other societal ecosystem services worldwide. Although recreationally-caught fish are frequently harvested and consumed by fishers, their contribution to food and nutrition has not been adequately quantified due to lack of data, poor monitoring, and under-reporting, especially in developing countries. Beyond limited global harvest estimates, few have explored species-specific harvest patterns, although this variability has implications for fisheries management and food security. Given the continued growth of the recreational fishery sector, understanding inland recreational fish harvest and consumption rates represents a critical knowledge gap. Based on a comprehensive literature search and expert knowledge review, we quantified multiple aspects of global inland recreational fisheries for 81 countries spanning ~192 species. For each country, we assembled recreational fishing participation rate and estimated species-specific harvest and consumption rate. This dataset provides a foundation for future assessments, including understanding nutritional and economic contributions of inland recreational fisheries. Measurement(s) | inland recreational fisheries harvest | Technology Type(s) | Module 4: Literature References | Sample Characteristic - Organism | Osteichthyes | Sample Characteristic - Environment | inland waters | Sample Characteristic - Location | Global |
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17
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Benoit DM, Chu C, Giacomini HC, Jackson DA. Size spectrum model reveals importance of considering species interactions in a freshwater fisheries management context. Ecosphere 2022. [DOI: 10.1002/ecs2.4163] [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)
- David M. Benoit
- Department of Ecology and Evolutionary Biology University of Toronto Toronto Ontario Canada
| | - Cindy Chu
- Department of Ecology and Evolutionary Biology University of Toronto Toronto Ontario Canada
- Great Lakes Laboratory for Fisheries and Aquatic Sciences Fisheries and Oceans Canada Burlington Ontario Canada
| | - Henrique C. Giacomini
- Ontario Ministry of Northern Development, Mines, Natural Resources, and Forestry Aquatic Research and Monitoring Section Peterborough Ontario Canada
| | - Donald A. Jackson
- Department of Ecology and Evolutionary Biology University of Toronto Toronto Ontario Canada
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18
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Kim D, Taylor AT, Near TJ. Phylogenomics and species delimitation of the economically important Black Basses (Micropterus). Sci Rep 2022; 12:9113. [PMID: 35668124 PMCID: PMC9170712 DOI: 10.1038/s41598-022-11743-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/28/2022] [Indexed: 01/25/2023] Open
Abstract
Informed management and conservation efforts are vital to sustainable recreational fishing and biodiversity conservation. Because the taxonomic rank of species is important in conservation and management strategies, success of these efforts depends on accurate species delimitation. The Black Basses (Micropterus) are an iconic lineage of freshwater fishes that include some of the world’s most popular species for recreational fishing and world's most invasive species. Despite their popularity, previous studies to delimit species and lineages in Micropterus suffer from insufficient geographic coverage and uninformative molecular markers. Our phylogenomic analyses of ddRAD data result in the delimitation of 19 species of Micropterus, which includes 14 described species, the undescribed but well-known Altamaha, Bartram’s, and Choctaw basses, and two additional undescribed species currently classified as Smallmouth Bass (M. dolomieu). We provide a revised delimitation of species in the Largemouth Bass complex that necessitates a change in scientific nomenclature: Micropterus salmoides is retained for the Florida Bass and Micropterus nigricans is elevated from synonymy for the Largemouth Bass. The new understanding of diversity, distribution, and systematics of Black Basses will serve as important basis for the management and conservation of this charismatic and economically important clade of fishes.
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Affiliation(s)
- Daemin Kim
- Department of Ecology and Evolutionary Biology, Yale University, P.O. Box 208106, New Haven, CT, 06511, USA.
| | - Andrew T Taylor
- Department of Biology, University of Central Oklahoma, Edmond, OK, 73034, USA.,Department of Biology, University of North Georgia, Dahlonega, GA, 30597, USA
| | - Thomas J Near
- Department of Ecology and Evolutionary Biology, Yale University, P.O. Box 208106, New Haven, CT, 06511, USA.,Peabody Museum, Yale University, New Haven, CT, 06511, USA
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19
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Gundelund C, Skov C. Changes in angler demography and angling patterns during the Covid-19 lockdown in spring 2020 measured through a citizen science platform. MARINE POLICY 2021; 131:104602. [PMID: 34511704 PMCID: PMC8423404 DOI: 10.1016/j.marpol.2021.104602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/11/2021] [Accepted: 05/18/2021] [Indexed: 06/13/2023]
Abstract
From 11 March to end of May 2020 a lockdown was imposed in Denmark due to the Covid-19 outbreak. Concurrently a 20% increase in sales of mandatory national angling licenses was reported in Denmark, suggesting an increase in angling participation. Here, we use data collected from a citizen science platform for recreational anglers to a) explore whether the increase in participation affected multiple characteristics of the anglers that registered to the citizen science platform in spring 2020, and b) explore changes in angling effort and catch patterns during the lockdown as reported to the platform. The results indicate that the platform was able to detect changes in the characteristics of the participants in the Danish recreational angling during the Covid-19 lockdown, i.e. participants were younger, more likely to live in urban areas, less experienced, stated angling as a less important hobby, and less likely to be from outside of Denmark. The spring 2020 participants did not conduct more fishing trips compared to previous years, but their effort patterns differed. The effort patterns revealed a shift in fishing activity from weekend to weekday and, during the day, a shift in fishing activity from midday to early evening. These changes most likely reflect the extraordinary conditions that most Danes experienced during the lockdown. We found relatively lower catch rates and a trend towards retaining more fish, among the participants that registered in spring 2020. The results are discussed in relation to biological implications and lessons learned about data collection from citizen science platforms.
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Affiliation(s)
- Casper Gundelund
- Section of Freshwater Fisheries and Ecology, Technical University of Denmark, DTU Aqua, Vejlsøvej 35, 8600 Silkeborg, Denmark
| | - Christian Skov
- Section of Freshwater Fisheries and Ecology, Technical University of Denmark, DTU Aqua, Vejlsøvej 35, 8600 Silkeborg, Denmark
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20
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Andrews B, Ferrini S, Muench A, Brown A, Hyder K. Assessing the impact of management on sea anglers in the UK using choice experiments. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 293:112831. [PMID: 34082347 DOI: 10.1016/j.jenvman.2021.112831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 05/04/2021] [Accepted: 05/17/2021] [Indexed: 06/12/2023]
Abstract
Recreational sea angling is a popular activity generating significant socio-economic benefits but can impact on fish stocks. The motivations of recreational sea anglers go beyond catch, with a diverse range of motivations relating to physical health and well-being. Heterogenous motives and the popularity of catch and release practices mean that applying commercial fisheries management goals (maximum sustainable yield) to recreational fisheries could result in reduced participation, increased non-compliance, and a subsequent loss of both market and non-market values generated through recreational angling activities. Hence, assessment of sea angler preferences for management is important for the development of appropriate management strategies. In this study, a choice experiment was conducted to assess sea anglers' preferences for changes in UK sea angling management measures. Stated preferences for catching, keeping, and releasing fish due to bag limits and minimum-landing sizes were assessed. Willingness to pay (WTP) estimates for marginal changes of catching the first sea bass on a trip were between £11 and £31 depending on whether the fish could be kept or released and between £11 and £28 for cod, respectively. WTP was much higher for fish caught and kept than caught and released suggesting that consumption of fish was an important motivation. Minimum size was the most considered choice attribute for respondents, while cost was less commonly considered. The implications of the findings are discussed in the context of future management of recreational fisheries.
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Affiliation(s)
- Barnaby Andrews
- Centre for Social and Economic Research on the Global Environment (CSERGE), School of Environmental Sciences, University of East Anglia (UEA), Norwich Research Park, Norwich, UK; Centre for Environment Fisheries and Aquaculture Science, Pakefield Rd, Lowestoft, NR33 0HT, UK.
| | - Silvia Ferrini
- Centre for Social and Economic Research on the Global Environment (CSERGE), School of Environmental Sciences, University of East Anglia (UEA), Norwich Research Park, Norwich, UK
| | - Angela Muench
- Centre for Environment Fisheries and Aquaculture Science, Pakefield Rd, Lowestoft, NR33 0HT, UK; Collaborative Centre for Sustainable Use of the Seas (CCSUS), School of Environmental Sciences, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR4 7TJ, UK
| | - Adam Brown
- Substance, Canada House, Chepstow Street, Manchester, M1 5FW, UK
| | - Kieran Hyder
- Centre for Environment Fisheries and Aquaculture Science, Pakefield Rd, Lowestoft, NR33 0HT, UK; Collaborative Centre for Sustainable Use of the Seas (CCSUS), School of Environmental Sciences, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR4 7TJ, UK
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21
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Abstract
Marine fisheries are an essential component of global food security, but many are close to their limits and some are overfished. The models that guide the management of these fisheries almost always assume reproduction is proportional to mass (isometry), when fecundity generally increases disproportionately to mass (hyperallometry). Judged against several management reference points, we show that assuming isometry overestimates the replenishment potential of exploited fish stocks by 22% (range: 2% to 78%) for 32 of the world's largest fisheries, risking systematic overharvesting. We calculate that target catches based on assumptions of isometry are more than double those based on assumptions of hyperallometry for most species, such that common reference points are set twice as high as they should be to maintain the target level of replenishment. We also show that hyperallometric reproduction provides opportunities for increasing the efficacy of tools that are underused in standard fisheries management, such as protected areas or harvest slot limits. Adopting management strategies that conserve large, hyperfecund fish may, in some instances, result in higher yields relative to traditional approaches. We recommend that future assessment of reference points and quotas include reproductive hyperallometry unless there is clear evidence that it does not occur in that species.
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22
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Lennox RJ, Westrelin S, Souza AT, Šmejkal M, Říha M, Prchalová M, Nathan R, Koeck B, Killen S, Jarić I, Gjelland K, Hollins J, Hellstrom G, Hansen H, Cooke SJ, Boukal D, Brooks JL, Brodin T, Baktoft H, Adam T, Arlinghaus R. A role for lakes in revealing the nature of animal movement using high dimensional telemetry systems. MOVEMENT ECOLOGY 2021; 9:40. [PMID: 34321114 PMCID: PMC8320048 DOI: 10.1186/s40462-021-00244-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 02/11/2021] [Indexed: 05/13/2023]
Abstract
Movement ecology is increasingly relying on experimental approaches and hypothesis testing to reveal how, when, where, why, and which animals move. Movement of megafauna is inherently interesting but many of the fundamental questions of movement ecology can be efficiently tested in study systems with high degrees of control. Lakes can be seen as microcosms for studying ecological processes and the use of high-resolution positioning systems to triangulate exact coordinates of fish, along with sensors that relay information about depth, temperature, acceleration, predation, and more, can be used to answer some of movement ecology's most pressing questions. We describe how key questions in animal movement have been approached and how experiments can be designed to gather information about movement processes to answer questions about the physiological, genetic, and environmental drivers of movement using lakes. We submit that whole lake telemetry studies have a key role to play not only in movement ecology but more broadly in biology as key scientific arenas for knowledge advancement. New hardware for tracking aquatic animals and statistical tools for understanding the processes underlying detection data will continue to advance the potential for revealing the paradigms that govern movement and biological phenomena not just within lakes but in other realms spanning lands and oceans.
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Affiliation(s)
- Robert J Lennox
- Laboratory for Freshwater Ecology and Inland Fisheries (LFI) at NORCE Norwegian Research Centre, Nygårdsporten 112, 5008, Bergen, Norway.
| | - Samuel Westrelin
- INRAE, Aix Marseille Univ, Pôle R&D ECLA, RECOVER, 3275 Route de Cézanne - CS 40061, 13182 Cedex 5, Aix-en-Provence, France
| | - Allan T Souza
- Institute of Hydrobiology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Marek Šmejkal
- Institute of Hydrobiology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Milan Říha
- Institute of Hydrobiology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Marie Prchalová
- Institute of Hydrobiology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Ran Nathan
- Movement Ecology Lab, Department of Ecology, Evolution, and Behavior, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, 102 Berman Bldg, Edmond J. Safra Campus at Givat Ram, 91904, Jerusalem, Israel
| | - Barbara Koeck
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Graham Kerr Building, Glasgow, G12 8QQ, UK
| | - Shaun Killen
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Graham Kerr Building, Glasgow, G12 8QQ, UK
| | - Ivan Jarić
- Institute of Hydrobiology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czech Republic
- Faculty of Science, Department of Ecosystem Biology, University of South Bohemia, České Budějovice, Czech Republic
| | - Karl Gjelland
- Norwegian Institute of Nature Research, Tromsø, Norway
| | - Jack Hollins
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Graham Kerr Building, Glasgow, G12 8QQ, UK
- University of Windsor, Windsor, ON, Canada
| | - Gustav Hellstrom
- Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Henry Hansen
- Karlstads University, Universitetsgatan 2, 651 88, Karlstad, Sweden
- Department of Biology and Ecology of Fishes, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Bergen, Germany
| | - Steven J Cooke
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, Ottawa, ON, Canada
| | - David Boukal
- Faculty of Science, Department of Ecosystem Biology, University of South Bohemia, České Budějovice, Czech Republic
- Institute of Entomology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Jill L Brooks
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, Ottawa, ON, Canada
| | - Tomas Brodin
- Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Henrik Baktoft
- Technical University of Denmark, Vejlsøvej 39, Building Silkeborg-039, 8600, Silkeborg, Denmark
| | - Timo Adam
- Bielefeld University, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Robert Arlinghaus
- Department of Biology and Ecology of Fishes, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Bergen, Germany
- Division of Integrative Fisheries Management, Humboldt-Universität zu Berlin, Bergen, Germany
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Cambra E, Bello A, Kayal M, Lenfant P, Vasseur L, Verdoit-Jarraya M. Holistic investigation of shore angler profiles to support marine protected areas management. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 285:112089. [PMID: 33601262 DOI: 10.1016/j.jenvman.2021.112089] [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: 05/04/2020] [Revised: 01/13/2021] [Accepted: 01/28/2021] [Indexed: 06/12/2023]
Abstract
Marine Recreational Fishing (MRF) is growing worldwide in scientific interest, as evidenced by the increasing number of dedicated publications. Studies on the impacts and benefits to socio-ecosystems and mental health are driving this gradual awareness. In the Mediterranean, MRF is currently responsible for 10% of the catches though, in the context of small-scale fisheries decline, it may become dominant. Sustaining this activity represents a universal challenge for the future of mankind. However, the potential influence of anglers' heterogeneity on both the environment and the Catch Per Unit of Effort (CPUE), used internationally to evaluate fish harvest and as a stocks indicator, hinders MRF management. In addition, little data is available on onshore fishing, while the number of practitioners may increase sharply in the context of a socio-economic crisis, especially in marine protected areas (MPA). We conducted a year-round survey in 2017-2018 in a French Mediterranean MPA subject to tourist flows, during which 144 onshore anglers were polled by semi-directive interviews. We used a typology based on technical and socio-economic data of anglers to describe their behaviour diversity and its influence on CPUE and, more broadly, the marine environment in multi-species fisheries. We characterised four onshore angler profiles, segregated in space and time, including one identified as at risk of causing impacts. Our analyses support using total and per species CPUE independently of profiles to evaluate onshore MRF harvest, except for four species. CPUE seem based on the profiles' skills and self-regulation which induce similar yields between anglers in the absence of control. This demonstrates the importance of taking into account angler behaviour, as each profile could react differently to management actions and highlights that CPUE could be used to detect the effect of changes in regulation in the framework of adaptive management. Our results support that MRF regulations should be simplified and homogenised at the national level and cooperation with fishing shops in MPA co-management should be promoted.
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Affiliation(s)
- Eléonore Cambra
- UPVD, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, F-66860, Perpignan, France; CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, F-66860, Perpignan, France.
| | - Alice Bello
- UPVD, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, F-66860, Perpignan, France; CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, F-66860, Perpignan, France
| | - Mohsen Kayal
- ENTROPIE, IRD, Université de la Réunion, CNRS, IFREMER, Université de la Nouvelle-Calédonie, Nouméa, New Caledonia
| | - Philippe Lenfant
- UPVD, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, F-66860, Perpignan, France; CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, F-66860, Perpignan, France
| | - Lauriane Vasseur
- Parc naturel marin du golfe du Lion, 2 impasse de Charlemagne, 66700, Argelès-sur-Mer, France
| | - Marion Verdoit-Jarraya
- UPVD, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, F-66860, Perpignan, France; CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, F-66860, Perpignan, France
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24
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Sbragaglia V, Coco S, Correia RA, Coll M, Arlinghaus R. Analyzing publicly available videos about recreational fishing reveals key ecological and social insights: A case study about groupers in the Mediterranean Sea. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 765:142672. [PMID: 33077204 DOI: 10.1016/j.scitotenv.2020.142672] [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: 06/23/2020] [Revised: 09/02/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
iEcology and conservation culturomics are two emerging research approaches that rely on digital data for studying ecological patterns and human-nature interactions. We applied data mining of videos published on YouTube related to recreational fishing of four species of groupers (family: Epinephelidae) in Italy between 2011 and 2017 to learn whether digital user-supplied data help uncover key spatio-temporal ecological patterns characteristic of the studied species. Our results support an ontogenetic deepening of the dusky grouper (Epinephelus marginatus) as revealed by a positive relationship between body mass and depth of captures declared in spearfishing videos. In addition, the data support a northward expansion of the white grouper (Epinephelus aeneus) because the average latitude associated to the catch was found to be positively correlated with the years when the videos were uploaded on YouTube. Furthermore, the georeferenced data about the white grouper filled a knowledge gap in a well-established international occurrence records dataset. The approach presented here could help mitigating data deficiencies and inform about harvesting patterns shown by recreational anglers and spearfishers. Our work illustrates the value of digital data associated with recreational fishing for advancing fish and fisheries research. The approach can be broadened to larger spatial and temporal scales, and to different species, contributing to a better understanding of macroecological patterns, assessment and conservation of exploited species, and monitoring of recreational fisheries.
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Affiliation(s)
- Valerio Sbragaglia
- Department of Marine Renewable Resources, Institute of Marine Sciences (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain; Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany.
| | - Salvatore Coco
- School of Biosciences and Veterinary Medicine, University of Camerino, Viale Circonvallazione 93-95, 62024 Matelica, Italy
| | - Ricardo A Correia
- Helsinki Lab of Interdisciplinary Conservation Science (HELICS), Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland; Helsinki Insitute for Sustainability Science (HELSUS), Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland; DBIO & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal; Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Campus A. C. Simões, Avenida Lourival Melo Mota, Tabuleiro dos Martins, Maceió, Alagoas, Brazil
| | - Marta Coll
- Department of Marine Renewable Resources, Institute of Marine Sciences (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain
| | - Robert Arlinghaus
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany; Division of Integrative Fisheries Management, Department of Crop and Animal Sciences, Faculty of Life Sciences, Humboldt-Universität zu Berlin, Philippstrasse 13, Haus 7, 10115 Berlin, Germany
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25
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Su G, Logez M, Xu J, Tao S, Villéger S, Brosse S. Human impacts on global freshwater fish biodiversity. Science 2021; 371:835-838. [PMID: 33602854 DOI: 10.1126/science.abd3369] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 01/14/2021] [Indexed: 01/09/2023]
Abstract
Freshwater fish represent one-fourth of the world's vertebrates and provide irreplaceable goods and services but are increasingly affected by human activities. A new index, Cumulative Change in Biodiversity Facets, revealed marked changes in biodiversity in >50% of the world's rivers covering >40% of the world's continental surface and >37% of the world's river length, whereas <14% of the world's surface and river length remain least impacted. Present-day rivers are more similar to each other and have more fish species with more diverse morphologies and longer evolutionary legacies. In temperate rivers, where the impact has been greatest, biodiversity changes were primarily due to river fragmentation and introduction of non-native species.
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Affiliation(s)
- Guohuan Su
- Laboratoire Evolution et Diversité Biologique (EDB), UMR5174, Université Toulouse 3 Paul Sabatier, CNRS, IRD, Toulouse, France.
| | - Maxime Logez
- INRAE, Aix Marseille Univ, RECOVER, Aix-en-Provence, France.,Pôle R&D "ECLA," Aix-en-Provence, France
| | - Jun Xu
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P.R. China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, P.R. China
| | - Shengli Tao
- Laboratoire Evolution et Diversité Biologique (EDB), UMR5174, Université Toulouse 3 Paul Sabatier, CNRS, IRD, Toulouse, France
| | | | - Sébastien Brosse
- Laboratoire Evolution et Diversité Biologique (EDB), UMR5174, Université Toulouse 3 Paul Sabatier, CNRS, IRD, Toulouse, France
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26
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The battle between harvest and natural selection creates small and shy fish. Proc Natl Acad Sci U S A 2021; 118:2009451118. [PMID: 33619086 DOI: 10.1073/pnas.2009451118] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Harvest of fish and wildlife, both commercial and recreational, is a selective force that can induce evolutionary changes to life history and behavior. Naturally selective forces may create countering selection pressures. Assessing natural fitness represents a considerable challenge in broadcast spawners. Thus, our understanding about the relative strength of natural and fisheries selection is slim. In the field, we compared the strength and shape of harvest selection to natural selection on body size over four years and behavior over one year in a natural population of a freshwater top predator, the northern pike (Esox lucius). Natural selection was approximated by relative reproductive success via parent-offspring genetic assignments over four years. Harvest selection was measured by comparing individuals susceptible to recreational angling with individuals never captured by this gear type. Individual behavior was measured by high-resolution acoustic telemetry. Harvest and natural size selection operated with equal strength but opposing directions, and harvest size selection was consistently negative in all study years. Harvest selection also had a substantial behavioral component independent of body length, while natural behavioral selection was not documented, suggesting the potential for directional harvest selection favoring inactive, timid fish. Simulations of the outcomes of different fishing regulations showed that traditional minimum size-based harvest limits are unlikely to counteract harvest selection without being completely restrictive. Our study suggests harvest selection may be inevitable and recreational fisheries may thus favor small, inactive, shy, and difficult-to-capture fish. Increasing fractions of shy fish in angling-exploited stocks would have consequences for stock assessment and all fisheries operating with hook and line.
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27
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Griffin KJ, Hedge LH, Warton DI, Astles KL, Johnston EL. Modeling recreational fishing intensity in a complex urbanised estuary. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 279:111529. [PMID: 33246754 DOI: 10.1016/j.jenvman.2020.111529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 09/11/2020] [Accepted: 10/18/2020] [Indexed: 06/12/2023]
Abstract
Urbanised estuaries, ports and harbours are often utilised for recreational purposes, notably recreational angling. Yet there has been little quantitative assessment of the footprint and intensity of these activities at scales suitable for spatial management. Urban and industrialised estuaries have previously been considered as having low conservation value, perhaps due to issues with contamination and disturbance. Studies in recent decades have demonstrated that many of these systems are still highly biodiverse and of high value to local residents. As a response, urbanised estuaries are now being considered by coastal spatial management initiatives, where assessments of recreational use in these areas can help avoid 'user-environmental' and 'user-user' conflict. The models of these activities need to be developed at a scale relevant to governments and regulatory authorities, but the few human-use models that do exist integrate fishing intensity to a regional or even continental scale; too large to capture the fine scale variation inherent in complex urban fisheries. Species Distribution Modeling (SDM) is a tool commonly used to assess drivers of species range, but can be applied to models of recreational fishing in complex environments, at a scale relevant to regulatory bodies. Using point-data from 573 visual surveys with recently developed Poisson point process models, we examine the recreational fishery in Australia's busiest estuarine port, Sydney Harbour. We demonstrate the utility of these models for understanding the distribution of boat and shore-based fishers, and the effects of a range of temporally static (geographical) and dynamic (weather) predictors on these distributions.
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Affiliation(s)
- Kingsley J Griffin
- Centre for Marine Science and Innovation, University of New South Wales, Sydney, Australia.
| | - Luke H Hedge
- Centre for Marine Science and Innovation, University of New South Wales, Sydney, Australia; Evolution and Ecology Research Centre, University of New South Wales, Sydney, Australia; Sydney Institute of Marine Sciences, Mosman, NSW, Australia
| | - David I Warton
- Evolution and Ecology Research Centre, University of New South Wales, Sydney, Australia; School of Mathematics and Statistics, University of New South Wales, Sydney, Australia
| | - Karen L Astles
- Marine Ecosystems Unit, Fisheries NSW, Department of Primary Industries, Australia
| | - Emma L Johnston
- Centre for Marine Science and Innovation, University of New South Wales, Sydney, Australia; Evolution and Ecology Research Centre, University of New South Wales, Sydney, Australia; Sydney Institute of Marine Sciences, Mosman, NSW, Australia
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28
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Fishery-Based Ecotourism in Developing Countries Can Enhance the Social-Ecological Resilience of Coastal Fishers—A Case Study of Bangladesh. WATER 2021. [DOI: 10.3390/w13030292] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The importance of recreational fishing, in many coastal areas and less developed nations, is increasing rapidly. Connecting fisheries to tourism can create innovative tourism products and provide new income sources. The present study is the first to explore the concept of coastal fishery-based ecotourism (FbE) to enhance the social–ecological resilience of coastal fishing communities in a specific tourist spot in Bangladesh. A combination of primary (quantitative and qualitative) and secondary (literature databases) data sources were used in this study. It applied a social–ecological system (SES) and social–ecological resilience (SER) concept to collect quantitative and qualitative data (120 in-depth individual interviews, four focus group discussions, and strengths, weakness, opportunities, and threats-SWOT analyses) and frame their interpretation. The study found that Bangladesh needs to adopt a firm policy to utilize tourism’s potential in national economic development and societal progress. The findings show the considerable potential of the concept that integrates business, education, and an environmental conservation perspective in Bangladesh, specifically for Saint Martin’s Island: 32% of interviewees expressed that increasing employment opportunities and the Gross Domestic Products (GDP) is the primary potential, whereas 31% said it would attract fishing tourists and 23% believed it would develop the local infrastructure and facilities for fishing and tourism. Similarly, most of the respondents (31%) thought that the lack of awareness and promotional activities is the main limitation preventing this initiative from being well accepted. Moreover, based on the findings, specific measures for strengthening the social–ecological resilience of the coastal fishers via FbE at the local level were suggested, including building communal links, developing community infrastructures, revising prevailing rules and regulations, offering alternative means of generating income for fishers during disaster periods, and more active sharing of responsibility between stakeholders and government for the management of FbE. Finally, with its focus on the prospects and challenges of coastal FbE development on Saint Martin’s Island, this article provides a useful reference point for future discourse on similar social and economic strategies. While this study focuses on Bangladesh’s coastal fishing villages, the results are possibly applicable more broadly in similar contexts and developing countries worldwide.
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29
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Cooke SJ, Venturelli P, Twardek WM, Lennox RJ, Brownscombe JW, Skov C, Hyder K, Suski CD, Diggles BK, Arlinghaus R, Danylchuk AJ. Technological innovations in the recreational fishing sector: implications for fisheries management and policy. REVIEWS IN FISH BIOLOGY AND FISHERIES 2021. [PMID: 33642705 DOI: 10.1007/s1160-021-09643-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Technology that is developed for or adopted by the recreational fisheries sector (e.g., anglers and the recreational fishing industry) has led to rapid and dramatic changes in how recreational anglers interact with fisheries resources. From improvements in finding and catching fish to emulating their natural prey and accessing previously inaccessible waters, to anglers sharing their exploits with others, technology is completely changing all aspects of recreational fishing. These innovations would superficially be viewed as positive from the perspective of the angler (aside from the financial cost of purchasing some technologies), yet for the fisheries manager and policy maker, technology may create unintended challenges that lead to reactionary or even ill-defined approaches as they attempt to keep up with these changes. The goal of this paper is to consider how innovations in recreational fishing are changing the way that anglers interact with fish, and thus how recreational fisheries management is undertaken. We use a combination of structured reviews and expert analyses combined with descriptive case studies to highlight the many ways that technology is influencing recreational fishing practice, and, relatedly, what it means for changing how fisheries and/or these technologies need to be managed-from changes in fish capture, to fish handling, to how anglers share information with each other and with managers. Given that technology is continually evolving, we hope that the examples provided here lead to more and better monitoring of technological innovations and engagement by the management and policy authorities with the recreational fishing sector. Doing so will ensure that management actions related to emerging and evolving recreational fishing technology are more proactive than reactive.
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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
| | - Paul Venturelli
- Department of Biology, Ball State University, Cooper Life Science Building, CL 121, Muncie, IN 47306 USA
| | - William M Twardek
- 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
| | - Robert J Lennox
- LFI, Freshwater Biology, NORCE Norwegian Research Centre, Nygårdsporten 112, 5006 Bergen, Norway
| | - Jacob W Brownscombe
- 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
- Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, 867 Lakeshore Rd, Burlington, ON L7S 1A1 Canada
| | - Christian Skov
- Technical University of Denmark, National Institute of Aquatic Resources (DTU Aqua), Vejlsøvej 39, 8600 Silkeborg, Denmark
| | - Kieran Hyder
- Centre for Environment, Fisheries and Aquaculture Science (CEFAS), Pakefield Road, Lowestoft, Suffolk, NR33 0HT UK
| | - Cory D Suski
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, 1102 S. Goodwin Ave, Urbana, IL 61801 USA
| | | | - Robert Arlinghaus
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany
- Division of Integrative Fisheries Management, Humboldt-Universität zu Berlin, Invalidenstrasse 42, 10115 Berlin, Germany
| | - Andy J Danylchuk
- Department of Environmental Conservation, University of Massachusetts Amherst, 160 Holdsworth Way, Amherst, MA 01003 USA
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30
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Cooke SJ, Venturelli P, Twardek WM, Lennox RJ, Brownscombe JW, Skov C, Hyder K, Suski CD, Diggles BK, Arlinghaus R, Danylchuk AJ. Technological innovations in the recreational fishing sector: implications for fisheries management and policy. REVIEWS IN FISH BIOLOGY AND FISHERIES 2021; 31:253-288. [PMID: 33642705 PMCID: PMC7900803 DOI: 10.1007/s11160-021-09643-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 02/02/2021] [Indexed: 05/13/2023]
Abstract
Technology that is developed for or adopted by the recreational fisheries sector (e.g., anglers and the recreational fishing industry) has led to rapid and dramatic changes in how recreational anglers interact with fisheries resources. From improvements in finding and catching fish to emulating their natural prey and accessing previously inaccessible waters, to anglers sharing their exploits with others, technology is completely changing all aspects of recreational fishing. These innovations would superficially be viewed as positive from the perspective of the angler (aside from the financial cost of purchasing some technologies), yet for the fisheries manager and policy maker, technology may create unintended challenges that lead to reactionary or even ill-defined approaches as they attempt to keep up with these changes. The goal of this paper is to consider how innovations in recreational fishing are changing the way that anglers interact with fish, and thus how recreational fisheries management is undertaken. We use a combination of structured reviews and expert analyses combined with descriptive case studies to highlight the many ways that technology is influencing recreational fishing practice, and, relatedly, what it means for changing how fisheries and/or these technologies need to be managed-from changes in fish capture, to fish handling, to how anglers share information with each other and with managers. Given that technology is continually evolving, we hope that the examples provided here lead to more and better monitoring of technological innovations and engagement by the management and policy authorities with the recreational fishing sector. Doing so will ensure that management actions related to emerging and evolving recreational fishing technology are more proactive than reactive.
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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
| | - Paul Venturelli
- Department of Biology, Ball State University, Cooper Life Science Building, CL 121, Muncie, IN 47306 USA
| | - William M. Twardek
- 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
| | - Robert J. Lennox
- LFI, Freshwater Biology, NORCE Norwegian Research Centre, Nygårdsporten 112, 5006 Bergen, Norway
| | - Jacob W. Brownscombe
- 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
- Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, 867 Lakeshore Rd, Burlington, ON L7S 1A1 Canada
| | - Christian Skov
- Technical University of Denmark, National Institute of Aquatic Resources (DTU Aqua), Vejlsøvej 39, 8600 Silkeborg, Denmark
| | - Kieran Hyder
- Centre for Environment, Fisheries and Aquaculture Science (CEFAS), Pakefield Road, Lowestoft, Suffolk, NR33 0HT UK
| | - Cory D. Suski
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, 1102 S. Goodwin Ave, Urbana, IL 61801 USA
| | | | - Robert Arlinghaus
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany
- Division of Integrative Fisheries Management, Humboldt-Universität zu Berlin, Invalidenstrasse 42, 10115 Berlin, Germany
| | - Andy J. Danylchuk
- Department of Environmental Conservation, University of Massachusetts Amherst, 160 Holdsworth Way, Amherst, MA 01003 USA
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31
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Jorgensen SJ, Micheli F, White TD, Van Houtan KS, Alfaro-Shigueto J, Andrzejaczek S, Arnoldi NS, Baum JK, Block B, Britten GL, Butner C, Caballero S, Cardeñosa D, Chapple TK, Clarke S, Cortés E, Dulvy NK, Fowler S, Gallagher AJ, Gilman E, Godley BJ, Graham RT, Hammerschlag N, Harry AV, Heithaus M, Hutchinson M, Huveneers C, Lowe CG, Lucifora LO, MacKeracher T, Mangel JC, Barbosa Martins AP, McCauley DJ, McClenachan L, Mull C, Natanson LJ, Pauly D, Pazmiño DA, Pistevos JCA, Queiroz N, Roff G, Shea BD, Simpfendorfer CA, Sims DW, Ward-Paige C, Worm B, Ferretti F. Emergent research and priorities for shark and ray conservation. ENDANGER SPECIES RES 2021. [DOI: 10.3354/esr01169] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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32
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Kayal M, Cigala M, Cambra E, Soulat N, Mercader M, Lebras A, Ivanoff P, Sébési L, Lassus-Debat A, Hartmann V, Bradtke M, Lenfant P, Jabouin C, Dubreuil J, Pelletier D, Joguet M, Le Mellionnec S, Brichet M, Binche JL, Payrot J, Saragoni G, Crec’hriou R, Verdoit-Jarraya M. Marine reserve benefits and recreational fishing yields: The winners and the losers. PLoS One 2020; 15:e0237685. [PMID: 33301445 PMCID: PMC7728224 DOI: 10.1371/journal.pone.0237685] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 11/17/2020] [Indexed: 11/30/2022] Open
Abstract
Marine reserves constitute effective tools for preserving fish stocks and associated human benefits. However, not all reserves perform equally, and predicting the response of marine communities to management actions in the long run is challenging. Our decadal-scale survey of recreational fishing yields at France's 45-year old Cerbère-Banyuls marine reserve indicated significant protection benefits, with 40-50% higher fishing yields per unit effort in the partial-protection zone of the reserve (where fishing is permitted but at a lower level) than in surrounding non-reserve areas. Over the period 2005-2014, catch per unit effort (CPUE) declined both inside and outside the reserve, while weight per unit effort (WPUE) increased by 131% inside and decreased by 60% outside. Different CPUE and WPUE trajectories among fish families indicated changing catch assemblages, with yields increasing for the family most valued by fisheries, Sparidae (the ecological winners). However, reserve benefits were restricted to off-shore fishermen (the social winners), as on-shore yields were ~4 times lower and declining, even inside the reserve. Our study illustrates how surveys of recreational fishing yields can help evaluate the effectiveness of marine protected areas for key social and ecological protagonists. We show that, more than four decades after its establishment, fishing efficiencies at the historical Cerbère-Banyuls marine reserve are still changing, but benefits in terms of catch abundance, weight, and composition remain predominantly restricted to off-shore fishermen. Further regulations appear necessary to guarantee that conservation strategies equitably benefit societal groups.
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Affiliation(s)
- Mohsen Kayal
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
- Institut de Recherche pour le Développement, UMR 9220 ENTROPIE, IRD, Université de la Réunion, IFREMER, CNRS, Université de la Nouvelle-Calédonie, Nouméa, New Caledonia
| | - Marine Cigala
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Eléonore Cambra
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Nelly Soulat
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Manon Mercader
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Audrey Lebras
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Pauline Ivanoff
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Léa Sébési
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Aurélie Lassus-Debat
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Virginie Hartmann
- Département des Pyrénées-Orientales, Réserve Naturelle Marine de Cerbère-Banyuls, Banyuls-sur-Mer, France
| | - Mélissa Bradtke
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Philippe Lenfant
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | | | - Julien Dubreuil
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Dominique Pelletier
- EMH, Institut Français de Recherche pour l’Exploration de la Mer (IFREMER), Nantes, France
| | - Manon Joguet
- Parc naturel marin du golfe du Lion, Argelès-sur-Mer, France
| | - Solène Le Mellionnec
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Marion Brichet
- Direction Interrégionale de la Mer Méditerranée, Marseille, France
| | - Jean-Louis Binche
- Département des Pyrénées-Orientales, Réserve Naturelle Marine de Cerbère-Banyuls, Banyuls-sur-Mer, France
| | - Jérôme Payrot
- Département des Pyrénées-Orientales, Réserve Naturelle Marine de Cerbère-Banyuls, Banyuls-sur-Mer, France
| | - Gilles Saragoni
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Romain Crec’hriou
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
| | - Marion Verdoit-Jarraya
- UPVD-CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, Université de Perpignan Via Domitia, Perpignan, France
- Centre de Recherche sur les Ecosystèmes Marins (CREM), Port-Barcarès, France
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Raynal J, Weeks R, Pressey R, Adams A, Barnett A, Cooke S, Sheaves M. Habitat-dependent outdoor recreation and conservation organizations can enable recreational fishers to contribute to conservation of coastal marine ecosystems. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2020.e01342] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Can Fishing Tourism Contribute to Conservation and Sustainability via Ecotourism? A Case Study of the Fishery for Giant African Threadfin Polydactylus quadrifilis on the Kwanza Estuary, Angola. SUSTAINABILITY 2020. [DOI: 10.3390/su12104221] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
It has been suggested that tourism fisheries can raise the value of landed catch, provide alternative livelihoods for local artisanal fishers and, because recreationally caught fishes are often released, simultaneously conserve stocks. However, for fishing tourism to meet ecotourism standards, sustainable, local economic benefit is imperative. This study aimed to assess the direct economic contribution of the recreational fishery for Polydactylus quadrifilis on the Kwanza Estuary, Angola. The recreational fishery contributed significantly to economic productivity in an otherwise rural area, generating a total revenue (TR) of $236,826 per four-month fishing season. Based on TR, P. quadrifilis was 3.6–32.6 times more valuable than the same fish caught and sold in the artisanal sector. However, high rates of economic leakage (86.1% of local TR) reduced the value of recreationally caught fish to below that of artisanally caught fish. Important sources of economic leakage were via the non-local sourcing of lodge supplies, services and staff and through the repatriation of profits. Capacity building within the local community is suggested to reduce leakages and to create ‘linkages’ with the recreational fishery. Greater community involvement, including the provision of business shares and greater communication and control, is suggested to achieve sustainability and incentivise the protection of recreationally important fishery species.
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35
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Pita P, Antelo M, Hyder K, Vingada J, Villasante S. The Use of Recreational Fishers’ Ecological Knowledge to Assess the Conservation Status of Marine Ecosystems. FRONTIERS IN MARINE SCIENCE 2020; 7. [PMID: 0 DOI: 10.3389/fmars.2020.00242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
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36
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Pinsky ML, Fenichel E, Fogarty M, Levin S, McCay B, St. Martin K, Selden RL, Young T. Fish and fisheries in hot water: What is happening and how do we adapt? POPUL ECOL 2020. [DOI: 10.1002/1438-390x.12050] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Malin L. Pinsky
- Department of Ecology, Evolution, and Natural Resources, Rutgers The State University of New Jersey New Brunswick New Jersey USA
| | - Eli Fenichel
- Yale School of Forestry and Environmental Studies Yale University New Haven Connecticut USA
| | - Michael Fogarty
- Northeast Fisheries Science Center National Oceanic and Atmospheric Administration Woods Hole Massachusetts USA
| | - Simon Levin
- Department of Ecology and Evolutionary Biology Princeton University Princeton New Jersey USA
| | - Bonnie McCay
- Department of Human Ecology, Rutgers The State University of New Jersey New Brunswick New Jersey USA
| | - Kevin St. Martin
- Department of Geography, Rutgers The State University of New Jersey Piscataway New Jersey USA
| | - Rebecca L. Selden
- Department of Ecology, Evolution, and Natural Resources, Rutgers The State University of New Jersey New Brunswick New Jersey USA
- Department of Biological Sciences Wellesley College Wellesley Massachusetts USA
| | - Talia Young
- Department of Geography, Rutgers The State University of New Jersey Piscataway New Jersey USA
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37
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Duarte CM, Agusti S, Barbier E, Britten GL, Castilla JC, Gattuso JP, Fulweiler RW, Hughes TP, Knowlton N, Lovelock CE, Lotze HK, Predragovic M, Poloczanska E, Roberts C, Worm B. Rebuilding marine life. Nature 2020; 580:39-51. [DOI: 10.1038/s41586-020-2146-7] [Citation(s) in RCA: 332] [Impact Index Per Article: 83.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 02/18/2020] [Indexed: 11/09/2022]
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38
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Obregón C, Hughes M, Loneragan NR, Poulton SJ, Tweedley JR. A two-phase approach to elicit and measure beliefs on management strategies: Fishers supportive and aware of trade-offs associated with stock enhancement. AMBIO 2020; 49:640-649. [PMID: 31201615 PMCID: PMC6965562 DOI: 10.1007/s13280-019-01212-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 01/17/2019] [Accepted: 06/03/2019] [Indexed: 06/09/2023]
Abstract
Understanding fisher beliefs and attitudes towards specific management strategies can help inform and improve fisheries management, and thus stock sustainability. Previous studies highlight a lack of fisher awareness regarding environmental issues influencing the systems they utilise and the negative impacts of specific strategies, such as stock enhancement. Our study used a two-phase approach to first elicit and then measure the strength of common fishers' beliefs and associated attitudes regarding stock enhancement. Specifically, this research focused on recreational fishers of an estuarine crab fishery (Portunus armatus) in south-western Australia. The results demonstrate that recreational fishers believe stock enhancement could have strong positive outcomes, but also recognise that this management strategy could lead to some negative outcomes, though the latter are perceived as less likely to happen. This contrasts with previous research on fisheries stocking and demonstrates the value of using the two-phase approach to clarify fishers' perceptions of particular management approaches. To reduce fisher dissatisfaction with management actions, careful communication on the benefits and costs of stock enhancement is recommended. Our study highlights the significance of integrating social sciences into fisheries research, and the need to better understand fishing community beliefs to ensure effective management of the fishery.
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Affiliation(s)
- Clara Obregón
- Environmental and Conservation Sciences, Centre for Sustainable Aquatic Ecosystems, Murdoch University, 90 South, St. Murdoch, WA 6150 Australia
| | - Michael Hughes
- Environmental and Conservation Sciences, Centre for Sustainable Aquatic Ecosystems, Murdoch University, 90 South, St. Murdoch, WA 6150 Australia
| | - Neil R. Loneragan
- Environmental and Conservation Sciences, Centre for Sustainable Aquatic Ecosystems, Murdoch University, 90 South, St. Murdoch, WA 6150 Australia
| | - Sarah J. Poulton
- Environmental and Conservation Sciences, Centre for Sustainable Aquatic Ecosystems, Murdoch University, 90 South, St. Murdoch, WA 6150 Australia
| | - James R. Tweedley
- Environmental and Conservation Sciences, Centre for Sustainable Aquatic Ecosystems, Murdoch University, 90 South, St. Murdoch, WA 6150 Australia
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39
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Wilson KL, Foos A, Barker OE, Farineau A, De Gisi J, Post JR. Social–ecological feedbacks drive spatial exploitation in a northern freshwater fishery: A halo of depletion. J Appl Ecol 2020. [DOI: 10.1111/1365-2664.13563] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kyle L. Wilson
- Department of Biological Sciences University of Calgary Calgary AB Canada
- Earth to Ocean Research Group Simon Fraser University Burnaby BC Canada
| | - Aaron Foos
- Department of Fisheries and Oceans Canada Whitehorse YT Canada
| | - Oliver E. Barker
- Department of Fisheries and Oceans Canada Whitehorse YT Canada
- Yukon Department of Environment Whitehorse YT Canada
| | - Anne Farineau
- Department of Biological Sciences University of Calgary Calgary AB Canada
- Agriculture and Agri‐Food Canada Lethbridge AB Canada
| | - Joe De Gisi
- Fish and Wildlife Sector – Skeena Division British Columbia Ministry of Forests, Lands, and Natural Resource Operations Smithers BC Canada
| | - John R. Post
- Department of Biological Sciences University of Calgary Calgary AB Canada
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Abstract
Marine fish stocks are an important part of the world food system and are particularly important for many of the poorest people of the world. Most existing analyses suggest overfishing is increasing, and there is widespread concern that fish stocks are decreasing throughout most of the world. We assembled trends in abundance and harvest rate of stocks that are scientifically assessed, constituting half of the reported global marine fish catch. For these stocks, on average, abundance is increasing and is at proposed target levels. Compared with regions that are intensively managed, regions with less-developed fisheries management have, on average, 3-fold greater harvest rates and half the abundance as assessed stocks. Available evidence suggests that the regions without assessments of abundance have little fisheries management, and stocks are in poor shape. Increased application of area-appropriate fisheries science recommendations and management tools are still needed for sustaining fisheries in places where they are lacking.
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41
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Ferter K, Cooke SJ, Humborstad OB, Nilsson J, Arlinghaus R. Fish Welfare in Recreational Fishing. Anim Welf 2020. [DOI: 10.1007/978-3-030-41675-1_19] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Meyerhoff J, Klefoth T, Arlinghaus R. The value artificial lake ecosystems provide to recreational anglers: Implications for management of biodiversity and outdoor recreation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 252:109580. [PMID: 31590054 DOI: 10.1016/j.jenvman.2019.109580] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 08/06/2019] [Accepted: 09/14/2019] [Indexed: 06/10/2023]
Abstract
Small lakes largely outnumber large lakes among the world's lentic ecosystems. Despite being common landscape elements, however, little is known about the value small lakes provide to recreationists. This paper presents results of an economic valuation study concerned with small gravel pits in Lower Saxony, Germany. Gravel pits are artificially created lake ecosystems that, particularly in Europe, are regularly used and managed by privately organized recreational anglers in an angling club context. A stated choice experiment provided insights into anglers' preferences for the abundance of target fish species, biodiversity of taxa other than fishes in the lakes as well as in the lake surroundings, and about the use of gravel pits by other recreationists for walking, swimming or boating. Latent class analysis identified five segments that varied in preferences. For the majority of anglers, the value of angling at gravel pit lakes was improved by an increase in the abundance of predatory fishes. Additionally, the presence of aquatic and terrestrial endangered species at the lakes increased the value of the ecosystems as perceived by the majority of anglers. By contrast, the presence of other recreational uses reduced the value of angling, with swimming being considered the most disturbing, while the degree of shoreline development had the least impact on the recorded choices. The results suggest that managing the gravel pit lakes for high biodiversity and the presence of desired game fish species maximizes the value for anglers. However, also two smaller segments with anglers revealing lexicographic preferences were identified. These anglers expressed either strong preferences against swimming in the lakes or strongly preferred the opportunity to use boats. Lake management may address the preference heterogeneity and the aversion against other recreational uses, such as swimming, by spatial zoning.
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Affiliation(s)
- Jürgen Meyerhoff
- Institute for Landscape Architecture and Environmental Planning, Technische Universität Berlin, Straße des 17, Juni 145, 10623, Berlin, Germany.
| | - Thomas Klefoth
- Angler Association of Lower Saxony, Brüsseler Str. 4, 30539, Hannover, Germany.
| | - Robert Arlinghaus
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587, Berlin, Germany; Division of Integrative Fisheries Management, Faculty of Life Sciences, Humboldt-Universität zu Berlin, Philippstrasse 13, Haus 7, 10115, Berlin, Germany.
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43
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Production dynamics reveal hidden overharvest of inland recreational fisheries. Proc Natl Acad Sci U S A 2019; 116:24676-24681. [PMID: 31748272 DOI: 10.1073/pnas.1913196116] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Recreational fisheries are valued at $190B globally and constitute the predominant way in which people use wild fish stocks in developed countries, with inland systems contributing the main fraction of recreational fisheries. Although inland recreational fisheries are thought to be highly resilient and self-regulating, the rapid pace of environmental change is increasing the vulnerability of these fisheries to overharvest and collapse. Here we directly evaluate angler harvest relative to the biomass production of individual stocks for a major inland recreational fishery. Using an extensive 28-y dataset of the walleye (Sander vitreus) fisheries in northern Wisconsin, United States, we compare empirical biomass harvest (Y) and calculated production (P) and biomass (B) for 390 lake year combinations. Production overharvest occurs when harvest exceeds production in that year. Biomass and biomass turnover (P/B) declined by ∼30 and ∼20%, respectively, over time, while biomass harvest did not change, causing overharvest to increase. Our analysis revealed that ∼40% of populations were production-overharvested, a rate >10× higher than estimates based on population thresholds often used by fisheries managers. Our study highlights the need to adapt harvest to changes in production due to environmental change.
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