Fisheries Management and Ecology最新文献

{"title":"Spatiotemporal Hotspots of Juvenile Bigeye and Yellowfin Tuna Catches Under Drifting Fish-Aggregating Devices in the Eastern Atlantic Ocean to Define Moratorium Strata","authors":"Sosthene Alban Valeryn Akia,&nbsp;Loreleï Guéry,&nbsp;Pedro J. Pascual-Alayón,&nbsp;Daniel Gaertner","doi":"10.1111/fme.12758","DOIUrl":"https://doi.org/10.1111/fme.12758","url":null,"abstract":"<div>\u0000 \u0000 <p>To reduce catches of juvenile bigeye and yellowfin tuna, while maintaining skipjack catches under drifting fish aggregating devices (dFAD), we analyzed spatiotemporal distributions of dFAD catches by European purse seiners in the Eastern Atlantic Ocean during 1996–2019. To detect hotspots of juvenile dFAD catches, we: identified periods of maximum abundance using a seasonal sub-series diagram; normalized monthly FAD catches per unit effort; and used emerging hotspots analysis on spatiotemporal density. Two main spatiotemporal strata were identified in the Guinean Gulf, which could be used to establish moratoria on dFAD fishing. These spatiotemporal strata differed from the existing ICCAT moratorium, which spanned a larger part of the African coast. Our findings also indicated that time-area closures of dFAD-fishing lasting 3–4 months in smaller areas could be more effective than the current dFAD moratorium to reduce unwanted bycatch in the Eastern Atlantic region. The two metrics we developed for comparison provided clear and measurable evidence that demonstrated how strategic and data-informed moratoriums can lead to substantial improvements in conservation.</p>\u0000 </div>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"32 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drivers of Data Contribution to an Electronic Citizen Science Platform for Anglers in Denmark","authors":"Casper Gundelund,&nbsp;Marco Marcer,&nbsp;Christian Skov","doi":"10.1111/fme.12770","DOIUrl":"https://doi.org/10.1111/fme.12770","url":null,"abstract":"<div>\u0000 \u0000 <p>Citizen science platforms are an alternative to traditional survey methods for collecting data from recreational fisheries. However, to supplement data collection, challenges associated with these platforms must be addressed, such as lack of recruitment and sustained engagement. Some platforms distinguish between recruitment and data contribution in that participants might register on a platform, but only a subset starts contributing data, and even fewer continue to do so. To further understanding of drivers behind data contribution, we first assessed the willingness to share information, using response rates to optional questions asked during account registration, among three distinct groups of participants on an electronic citizen science platform for anglers: (i) registered and did not contribute data (registrants); (ii) registered and contributed data in a single year (contributors); and (iii) registered and contributed data in multiple years (sustained contributors). We next modeled demographic and fishery-specific questions to determine specific drivers of data contribution and sustained contribution. Willingness to share information upon registration was lowest among registrants, intermediate among contributors, and highest among sustained contributors. The answer to the question “How important is angling as a hobby for you?” was the main driver in moving from registrant to contributor and from contributor to sustained contributor (i.e., participants who considered angling a more important hobby were more likely to be contributors and sustained contributors). Additionally, the probability of being a contributor declined over time, and angler residence (postal codes) was a driver of sustained contribution. Our findings indicated temporal and spatial instability in the participant base.</p>\u0000 </div>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"32 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fisheries Co-Management Strengthen the Effectiveness of Protected Areas in Amazonian Floodplain Lakes","authors":"Giulia Cristina Lopes Carvalho,&nbsp;Jansen Zuanon,&nbsp;Bruno Ferezim Morales,&nbsp;Gabriel Gazzana Barros,&nbsp;Gabriel Costa Borba,&nbsp;Sidineia Aparecida Amadio,&nbsp;Cristhiana Paula Röpke,&nbsp;Akemi Shibuya,&nbsp;Thatyla Luana Beck Farago,&nbsp;Carlos Edwar de Carvalho Freitas,&nbsp;Claudia Pereira de Deus,&nbsp;Flávia Kelly Siqueira-Souza","doi":"10.1111/fme.12768","DOIUrl":"https://doi.org/10.1111/fme.12768","url":null,"abstract":"<div>\u0000 \u0000 <p>Aquatic protected areas and co-management have been proposed as strategies for conserving fisheries resources in several world regions. We analyzed the effects of different levels of governance on yield of experimental fisheries in Amazonian floodplain lakes. Sampling between 2018 and 2022 used gill nets deployed for 24 h during flooding and receding water phases. Generalized linear models (GLMs) were fitted to catch per unit effort (CPUE) and covariates, river level, time, sampling sites, level of management of the collection sites, and lake fishery management type. CPUE was significantly related to governance, management type, sampling site, and water level. Our results indicated that areas of sustainable use where community-based co-management was implemented were more effective for promoting high fishery yield.</p>\u0000 </div>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"32 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Climate Change Affects Multiple Coral Reef Fisheries Ecosystem Services","authors":"Sarah M. Martin,&nbsp;James P. W. Robinson,&nbsp;Juliette Lucas,&nbsp;Emilie Augustin,&nbsp;Rodney Govinden,&nbsp;Shaun K. Wilson,&nbsp;Nicholas A. J. Graham","doi":"10.1111/fme.12761","DOIUrl":"https://doi.org/10.1111/fme.12761","url":null,"abstract":"<p>Coral reef fisheries support livelihoods and provide an affordable source of essential dietary nutrients to coastal people. However, climate-driven coral bleaching is dramatically altering reef habitats and changing reef fish composition, diversity, and productivity. We used data from fisheries independent surveys and artisanal trap landings to explore how reefs with different responses to coral bleaching differed in habitat configurations, fisheries catch rates, economic returns, and nutritional content. Coral-associated fishes supported the highest catch rates, greatest species diversity, highest rates of economic returns for fishers, and a wide price range for consumers. Macroalgae-associated fishes supported the greatest overall fisheries yields, which indicated higher fishery dependence on these habitats. Nutrient content was high in catches across all habitats, but concentrations varied by nutrient, which suggested that fishing across a range of reef habitats should provide the greatest variety of nutrients to coastal communities.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"32 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fme.12761","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Future Trends in Angler Behavior Based on a Delphi Study in the Nordic Countries","authors":"Lotte van den Heuvel,&nbsp;Øystein Aas,&nbsp;Sveinn Agnarsson,&nbsp;Emma Björkvik,&nbsp;Malgorzata Blicharska,&nbsp;Samuel Blyth,&nbsp;Casper Gundelund,&nbsp;Miikka Husa,&nbsp;Jon Olaf Olaussen,&nbsp;Jani Pellikka,&nbsp;Patrik Rönnbäck,&nbsp;Stian Stensland,&nbsp;Teppo Vehanen,&nbsp;Christian Skov","doi":"10.1111/fme.12760","DOIUrl":"https://doi.org/10.1111/fme.12760","url":null,"abstract":"<p>Recreational fisheries are dynamic social-ecological systems. Identification of anticipated future trends supports the design of policies and management to deliver outcomes for fisheries resources, users, and communities. To this end, we applied a forecasting method (i.e., Delphi survey) to recreational fisheries in five Nordic countries. The survey consisted of three rounds and included 20 diverse experts from each country. The study focused on expert perceptions of future trends in angler behaviors linked to specific angling activities (e.g., gear used, species targeted), and more general behavior (e.g., social media use, stewardship). Experts unanimously expected increases in fly fishing, stewardship, and use of angling-related technologies and social media platforms in the upcoming decade. Results can guide future research, management, and collaboration related to recreational fishing in the Nordic countries and beyond.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"32 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fme.12760","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143950139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Length-Based Assessment of Hovsgol Grayling (Thymallus nigrescens), Lenok (Brachymystax lenok), and Burbot (Lota lota) Population Status in Lake Hovsgol, Mongolia\u0000 Монголын Хөвсгөл нуурын Хөвсгөл хадран (Thymallus nigrescens), шөвгөр хоншоорт зэвэг (Brachymystax lenok), гутаарь (Lota lota) загасны уртад суурилсан популяцийн төлөв байдал","authors":"Margaret J. Shaw,&nbsp;Christopher M. Free,&nbsp;Bud Mendsaikhan,&nbsp;Batsaikhan Ganzorig,&nbsp;Olaf P. Jensen","doi":"10.1111/fme.12759","DOIUrl":"https://doi.org/10.1111/fme.12759","url":null,"abstract":"<p>Despite the global importance of inland fisheries, data available for stock assessment is often limited. Data-limited methods that use length composition data offer a potential approach to assessing more inland fisheries. We assessed the population status of three fish species in Lake Hovsgol, Mongolia through length-based spawning potential ratio (LBSPR) analysis and evaluation of trends in eight length-based indicators of population status, catch-per-unit-effort (CPUE), and body size. Hovsgol grayling (<i>Thymallus nigrescens</i>) were not yet overfished, but CPUE and body size declined due to targeting of large, mature fish. Lenok (<i>Brachymystax lenok</i>) were experiencing overfishing, especially of small, immature fish, which contributed to size–structure truncation. The burbot (<i>Lota lota</i>) population was healthy according to most indicators, but the lack of local life history information exacerbated already large uncertainties. Continued monitoring and improved coordination among fishers, managers, and scientists will be critical to enhancing the sustainability of these fisheries.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"32 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fme.12759","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Decade of Monitoring Reveals a Dynamic Fish Assemblage on a Substantial Artificial Reef in the Texas Gulf of Mexico","authors":"David Hicks,&nbsp;Ethan Getz,&nbsp;Richard Kline,&nbsp;Carlos Cintra Buenrostro","doi":"10.1111/fme.12756","DOIUrl":"https://doi.org/10.1111/fme.12756","url":null,"abstract":"<p>Fish communities on artificial reefs have rarely been monitored over long periods to evaluate success of reef deployment. Here, we used roving diver surveys to assess changes in fish assemblages on a large, reefed vessel during 2008–2017. Multivariate analyses revealed a dynamic community that stabilized after 5 years. Species richness increased and species dominance decreased during 2008–2017. The fish community shifted toward reef-associated species such as hogfish and pufferfish. Species composition shifted, but trophic structure was relatively stable, which suggested that functional groups may not reflect larger community shifts. Our results indicate that fish communities on artificial reefs are temporally dynamic and that long-term monitoring is needed to understand how fish assemblage structure changes through time.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"32 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fme.12756","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Use of Image-Based Data and Abundance Modelling Approaches for Predicting the Location of Vulnerable Marine Ecosystems in the South Pacific Ocean","authors":"Matthew Bennion,&nbsp;Ashley A. Rowden,&nbsp;Owen F. Anderson,&nbsp;David A. Bowden,&nbsp;Malcolm R. Clark,&nbsp;Franziska Althaus,&nbsp;Alan Williams,&nbsp;Shane W. Geange,&nbsp;Jordi Tablada,&nbsp;Fabrice Stephenson","doi":"10.1111/fme.12751","DOIUrl":"https://doi.org/10.1111/fme.12751","url":null,"abstract":"<p>Vulnerable marine ecosystems (VMEs) are typically fragile and slow to recover, thereby making them susceptible to disturbance, including fishing. In the high seas, the United Nations General Assembly (UNGA) requested regional fishery management organisations (RFMOs) to implement measures to prevent significant adverse impacts on VMEs. Here, we predict spatial abundances of 15 taxa, 13 VME indicator taxa, in the South Pacific RFMO (SPRFMO) area. Models used seafloor imagery data, an important advance on previously developed presence-only predictions, to provide information on spatial variation in taxa abundance that is crucial for better inferring likely location of VMEs, rather than just distribution of VME indicator taxa. Abundance models varied in predictive power (mean <i>R</i>² ranged 0.02–0.40). Uncertainty estimates of model predictions were developed to inform future spatial planning processes for conservation and management of VMEs. Using the VME index concept, abundance model outputs and previously published presence-only model predictions were weighted using vulnerability scores, to explore how modelled outputs could provide spatial estimates of likely VME distribution. Spatial predictions of abundance improved on previous modelling to provide an almost complete suite of abundance models for VME indicator taxa in the western portion of the SPRFMO Convention area. Nevertheless, to improve utility of modelled outputs, we recommend more high-quality seafloor imagery data be gathered within the SPRFMO Convention area to (1) validate abundance models developed here with independent data from the model area, (2) update models, if necessary, (3) link abundance information to ecosystem function and (4) explore validity of the adapted VME index approach used here.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"32 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fme.12751","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Feasibility of a Claw-Only Fishery for the Red Rock Crab, Cancer productus","authors":"Iain J. McGaw,&nbsp;Daniel L. Curtis,&nbsp;Travis E. Van Leeuwen,&nbsp;Eric V. C. Schneider","doi":"10.1111/fme.12750","DOIUrl":"https://doi.org/10.1111/fme.12750","url":null,"abstract":"<div>\u0000 \u0000 <p>The red rock crab, <i>Cancer productus</i>, is primarily harvested by a recreational fishery, with a small commercial harvest in California. Although relatively large, meat yields are low because the legs are small, and meat is largely confined to the claws. We investigated the potential for a claw-only harvest for this species. Although hand removal is used in the stone crab fishery, it caused &gt; 90% post-harvest mortality in red rock crabs. Inducing autotomy by inserting a spike into the arthrodial membranes or by cutting into the autotomy plane resulted in a high post-harvest survival. We recommend a minimum harvest size of 35 mm claw height to produce a claw size similar to medium-sized stone crabs and standard-sized brown and Jonah crabs and to ensure that severed claws are unlikely to have come from female crabs, which is important for regions that mandate a male-only harvest.</p>\u0000 </div>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"32 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recreational Fishing in the Neotropical Region: A Systematic Review","authors":"Daniel da Silva Ladislau,&nbsp;Pauliana Leão de Souza,&nbsp;Éder André Gubiani","doi":"10.1111/fme.12753","DOIUrl":"https://doi.org/10.1111/fme.12753","url":null,"abstract":"<div>\u0000 \u0000 <p>We reviewed the scientific literature to assess the current status of recreational fishing in the Neotropical region. In total, 122 publications met our criteria and are included here. Since 1990, the number of studies published on recreational fishing in the region significantly increased. Recreational fishing was evaluated in 13 countries and two territories. Most studies were in marine environments. In total, 372 fish species captured through recreational Neotropical fishing were registered. In South American countries, the presence of nonnative species was significant. Studies were concentrated in a few countries or were not published in scientific articles, conference papers, or book chapters, and some aquatic environments, such as coastal areas, bays, coastal lagoons, and reservoirs, were not studied. In addition, there are few lines of investigation into the practice of this activity in the region, and new investigations are necessary, especially with respect to environmental problems.</p>\u0000 </div>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"32 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}