Fish and Fisheries最新文献

{"title":"Multi-specific small-scale fisheries rely on few, locally essential, species: Evidence from a multi-area study in the Mediterranean","authors":"Antonio Calò,&nbsp;Antonio Di Franco,&nbsp;Federico Quattrocchi,&nbsp;Charalampos Dimitriadis,&nbsp;Patricia Ventura,&nbsp;Marco Milazzo,&nbsp;Paolo Guidetti","doi":"10.1111/faf.12689","DOIUrl":"https://doi.org/10.1111/faf.12689","url":null,"abstract":"<p>Achieving sound management of small-scale fisheries (SSFs) is globally recognized a key priority for sustaining livelihoods, local economies, social wealth and cultural heritage in coastal areas. The paucity of information on SSFs often prevents the proper assessment of different socio-ecological aspects, potentially leading to draw inappropriate conclusions and hampering the development and adoption of effective policies to foster SSF sustainability. To respond to the growing global call to assess these fisheries, we carried out a multi-disciplinary and data-rich assessment of SSFs at 11 areas in 6 Mediterranean EU countries, combining the analysis of 1292 SSF fishing operations and 149 semi-structured surveys of fishers. Specifically, we aimed at assessing (1) landed species contribution to SSF catches and revenues and (2) the spatial variability in a set of fishery socio-ecological descriptors. Results highlighted that, in spite of a high species diversity, Mediterranean SSFs actually rely economically upon a very limited number of species with catch and revenues per unit of effort mostly determined by less than 5 species, that can guarantee high and stable catches and revenues over time. Moreover, some fishing communities were found to rely on a restricted number of gears. These evidences suggest, that some SSFs' properties often assumed, but never broadly verified, should be carefully reconsidered, especially when viewed from a broader socio-ecological perspective, as in the case of the diversified portfolio or of the polyvalence of fishing gears. Taking the local scale into proper account is likely to reduce the risk of implementing management strategies potentially generating socio-ecological inequalities.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"23 6","pages":"1299-1312"},"PeriodicalIF":6.7,"publicationDate":"2022-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12689","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6191539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Linking observed changes in pelagic catches to temperature and oxygen in the Eastern Tropical Pacific","authors":"Tayler M. Clarke,&nbsp;Colette C. C. Wabnitz,&nbsp;Thomas L. Fr?licher,&nbsp;Gabriel Reygondeau,&nbsp;Daniel Pauly,&nbsp;William W. L. Cheung","doi":"10.1111/faf.12694","DOIUrl":"https://doi.org/10.1111/faf.12694","url":null,"abstract":"<p>Warming increases the metabolic rates of fishes and drives their oxygen demands above environmental oxygen supply, leading to declines in fish growth and smaller population sizes. Given the wide variability in species' sensitivity to changing temperature and oxygen levels, warming and oxygen limitation may be altering the composition of fish communities and hence, that of fisheries catches. Here, we test the hypothesis that changing temperatures shape the composition of pelagic fisheries catches in the Eastern Tropical Pacific. We expect that under warmer conditions, pelagic fisheries catches will be dominated by tropical species with higher oxygen demands and less surplus oxygen for growth. To test this hypothesis, we combined an index of the physiological vulnerability of exploited large pelagic fishes (e.g. tuna and billfish) to changing ocean temperatures and oxygen levels with fisheries catch data from 1970 to 2016. We found that warming is the main driver of changes in the physiological performance and catch composition of this fishery, and that oxygen limitation may be causing a significant breakpoint in the relationship between sea surface oxygen and the index of vulnerability of pelagic catches in the Ecuador and Galapagos Exclusive Economic Zones. Warm temperature anomalies due to El Niño were projected to cause reductions in the physiological performance of large pelagic fishes, although this only led to changes in catch composition during the extremely warm events. Our results suggest that catches are vulnerable to future warming, as the increasing frequency, duration and magnitude of marine heatwaves associated with climate change impact catch composition.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"23 6","pages":"1371-1382"},"PeriodicalIF":6.7,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12694","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5763713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Recent trends in abundance and fishing pressure of agency-assessed small pelagic fish stocks","authors":"Ray Hilborn,&nbsp;Claudio C. Buratti,&nbsp;Erich Díaz Acu?a,&nbsp;Daniel Hively,&nbsp;Jeppe Kolding,&nbsp;Hiroyuki Kurota,&nbsp;Nicole Baker,&nbsp;Pamela M. Mace,&nbsp;Carryn L. de Moor,&nbsp;Soyoka Muko,&nbsp;Giacomo Chato Osio,&nbsp;Ana M. Parma,&nbsp;Juan-Carlos Quiroz,&nbsp;Michael C. Melnychuk","doi":"10.1111/faf.12690","DOIUrl":"https://doi.org/10.1111/faf.12690","url":null,"abstract":"<p>Small pelagic fishes are used for human consumption, fishmeal and fish oil. They constitute 25% of global fish catch and have been of considerable conservation concern because of their intermediate position in aquatic food webs, often being a dominant dietary component of marine predators. This paper provides an overview of trends in abundance and fishing pressure on small pelagic fish stocks from single-species scientific assessments that constitute 60% of global small pelagic catch. While most individual stocks have exhibited wide variability in abundance (typical of small pelagics compared with other fish taxa), across stocks there has been remarkable stability in average fishing pressure and biomass since 1970. On average, since 1970, the biomass of assessed small pelagic stocks is estimated to have been slightly above the biomass that would produce maximum sustainable yield, but estimation of this quantity for highly fluctuating stocks is quite uncertain. There were significant differences among assessed regions, with the Mediterranean and Black Sea of greatest concern for high and growing fishing pressure. The 40% of global small pelagic fish catch not covered by single-species quantitative stock assessments since 1970 comes largely from Asia, where catches have continued to increase. At regional levels, the average abundance of assessed small pelagic fish is largely unrelated to average fishing pressure, which we argue results both from the portfolio effect, where numerous stocks fluctuate with little correlation in abundance, and from the short life span of small pelagics coupled with recruitment largely independent of spawning abundance.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"23 6","pages":"1313-1331"},"PeriodicalIF":6.7,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12690","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5682580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Monitoring fish using imaging sonar: Capacity, challenges and future perspective","authors":"Yaoguang Wei,&nbsp;Yunhong Duan,&nbsp;Dong An","doi":"10.1111/faf.12693","DOIUrl":"https://doi.org/10.1111/faf.12693","url":null,"abstract":"<p>The demand for fish products, which provide crucial protein for humans, is rising as the global population grows. In contrast, fish stock is declining due to human activity, environmental changes and overfishing. Fish monitoring provides valuable support data for effective fishery management and ecosystem conservation. The common monitoring methods are based on manual sampling, which is time-consuming, laborious and intrusive. Imaging sonar is a hydroacoustic system that produces acoustic images similar to optical images by transmitting and receiving sound waves, allowing for in situ monitoring of fish non-intrusively in the dark and turbid water environments where optical cameras are limited. In the last decade, imaging sonar, especially high frequency multibeam forward-looking sonar and side-scan sonar, has been widely used in fish monitoring. We reviewed the literature from the previous decade on the use of these two types of imaging sonar in fish species identification, abundance estimation, length measurement and behaviour analysis, as well as the sonar imagery processing concerning fish. The review results show that these imaging sonars are efficient and effective tools for fish monitoring in complex environments. The challenges include (1) the recognition of small fish forming dense aggregations; (2) species identification, which limits their use in species-specific studies; (3) time-consuming massive data processing. Therefore, advanced algorithms for sonar imagery processing and integrations with other sampling technologies are needed for future development.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"23 6","pages":"1347-1370"},"PeriodicalIF":6.7,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6098047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Incorporating knowledge of changes in climatic, oceanographic and ecological conditions in Canadian stock assessments","authors":"Pierre Pepin,&nbsp;Jacquelyne King,&nbsp;Carrie Holt,&nbsp;Helen Gurney-Smith,&nbsp;Nancy Shackell,&nbsp;Kevin Hedges,&nbsp;Alida Bundy","doi":"10.1111/faf.12692","DOIUrl":"https://doi.org/10.1111/faf.12692","url":null,"abstract":"<p>Environmental impacts on fisheries are pervasive, yet methods to account for them in stock assessments and management decisions vary in rigour and quality. The prevalence and efficacy of methods to account for environmental impacts are not well documented, limiting our ability to adequately respond to future environmental and climate changes for adaptive resource management. In Canada, legislation now requires that environmental conditions are considered in the management of fish stocks, yet the current extent of implementation in assessment processes is poorly understood. We assessed the use of climate, oceanographic and ecological considerations in science advisory processes for 178 stock assessments by Fisheries and Oceans Canada. We evaluated whether these considerations were included in conceptual hypotheses about broad-scale mechanisms, quantitative or qualitative analyses, and the development of management advice on current or future stock status. Conceptual hypotheses were included in 46% of assessments; quantitative inclusions occurred in 21% of assessments, while qualitative interpretations appeared in 31% of assessments; and 27% of assessments included climate, oceanographic and/or ecological considerations in the advice. Assessments of salmonids, invertebrates and pelagic taxa more frequently made use of environmental data than those for groundfish and elasmobranchs. Comparing our findings with assessments in other jurisdictions highlighted a gap in Canada's ability to respond to environmental changes and a need to develop integrated management approaches, such as regional ecosystem assessments and approaches that combine modelling and empirical analyses, with socio-economic analysis within interdisciplinary teams.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"23 6","pages":"1332-1346"},"PeriodicalIF":6.7,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5819742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extinction risk, reconstructed catches and management of chondrichthyan fishes in the Western Central Atlantic Ocean","authors":"Brendan S. Talwar,&nbsp;Brooke Anderson,&nbsp;Cristopher G. Avalos-Castillo,&nbsp;María del Pilar Blanco-Parra,&nbsp;Alejandra Briones,&nbsp;Diego Carde?osa,&nbsp;John?K. Carlson,&nbsp;Patricia Charvet,&nbsp;Charles F. Cotton,&nbsp;Zoe Crysler,&nbsp;Danielle H. Derrick,&nbsp;Michael R. Heithaus,&nbsp;Katelyn B. Herman,&nbsp;Olga Koubrak,&nbsp;David W. Kulka,&nbsp;Peter M. Kyne,&nbsp;Oscar M. Lasso-Alcalá,&nbsp;Paola A. Mejía-Falla,&nbsp;Jorge Manuel Morales-Salda?a,&nbsp;Beatriz Naranjo-Elizondo,&nbsp;Andrés F. Navia,&nbsp;Nathan Pacoureau,&nbsp;Juan?C. Peréz-Jiménez,&nbsp;Riley A. Pollom,&nbsp;Cassandra?L. Rigby,&nbsp;Eric V. C. Schneider,&nbsp;Nikola Simpson,&nbsp;Nicholas K. Dulvy","doi":"10.1111/faf.12675","DOIUrl":"https://doi.org/10.1111/faf.12675","url":null,"abstract":"<p>Chondrichthyan fishes are among the most threatened vertebrates on the planet because many species have slow life histories that are outpaced by intense fishing. The Western Central Atlantic Ocean, which includes the Greater Caribbean, is a hotspot of chondrichthyan biodiversity and abundance, but has been characterized by extensive shark and ray fisheries and a lack of sufficient data for effective management and conservation. To inform future research and management decisions, we analysed patterns in chondrichthyan extinction risk, reconstructed catches and management engagement in this region. We summarized the extinction risk of 180 sharks, rays and chimaeras, including 66 endemic and 14 near-endemic species, using contemporary IUCN Red List assessments. Over one-third (35.6%) were assessed as Vulnerable, Endangered or Critically Endangered, primarily due to overfishing. Reconstructed catches from 1950 to 2016 peaked in 1992, then declined by 40.2% thereafter. The United States, Venezuela and Mexico were responsible for most catches in the region and hosted the largest proportions of the regional distributions of threatened species, largely due to having extensive coastal habitats in their Exclusive Economic Zones. The quantity and taxonomic resolution of fisheries landings data were poor in much of the region, and national-level regulations varied widely across jurisdictions. Deepwater fisheries represent an emerging threat, although many deepwater chondrichthyans currently have refuge beyond the depths of most fisheries. Regional collaboration as well as effective and enforceable management informed by more complete fisheries data, particularly from small-scale fisheries, are required to protect and recover threatened species and ensure sustainable fisheries.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"23 5","pages":"1150-1179"},"PeriodicalIF":6.7,"publicationDate":"2022-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5777109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Overturning stereotypes: The fuzzy boundary between recreational and subsistence inland fisheries","authors":"Elizabeth A. Nyboer,&nbsp;Holly S. Embke,&nbsp;Ashley M. Robertson,&nbsp;Robert Arlinghaus,&nbsp;Shannon Bower,&nbsp;Claudio Baigun,&nbsp;Douglas Beard,&nbsp;Steven J. Cooke,&nbsp;Ian G. Cowx,&nbsp;John D. Koehn,&nbsp;Roman Lyach,&nbsp;Marco Milardi,&nbsp;Warren Potts,&nbsp;Abigail J. Lynch","doi":"10.1111/faf.12688","DOIUrl":"https://doi.org/10.1111/faf.12688","url":null,"abstract":"<p>Inland recreational fisheries provide numerous socio-economic benefits to fishers, families and communities. Recreationally harvested fish are also frequently consumed and may provide affordable and sustainable but undervalued contributions to human nutrition. Quantifying the degree to which recreationally harvested fish contribute to food security and subsistence is impeded by lack of data on harvest and consumption and by the difficulty in differentiating among recreational and subsistence fisheries. Recreational harvest records tend to be limited to wealthy, food-secure countries and well-monitored fisheries with clear regulations or permitting systems. These records often neglect components of recreational harvest among food-insecure fishers who are potentially more likely to have consumption as a motivation. Here, we highlight the ‘fuzzy boundary’ that can exist between inland recreational and subsistence fisheries and argue that unreported consumption is likely to be a hidden contributor to food security in some populations. We draw on local case studies from around the world to highlight specific instances where recreationally harvested fish species contribute food and subsistence benefits to participating communities. We use these examples to highlight the diversity of ways that inland recreational fisheries contribute to human nutrition, knowledge gaps in understanding recreational fishing for food, and consequences of not accounting for them as food fisheries in policy and management. The aim of this paper is to draw the attention of resource managers and policy makers, create greater social awareness of the importance of recreational fisheries and bring to light this hidden contribution of inland fisheries to nutrition and subsistence.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"23 6","pages":"1282-1298"},"PeriodicalIF":6.7,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5865062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Untangling social–ecological interactions: A methods portfolio approach to tackling contemporary sustainability challenges in fisheries","authors":"Emilie Lindkvist,&nbsp;Kara E. Pellowe,&nbsp;Steven M. Alexander,&nbsp;Elizabeth Drury O'Neill,&nbsp;Elena M. Finkbeiner,&nbsp;Alfredo Girón-Nava,&nbsp;Blanca González-Mon,&nbsp;Andrew F. Johnson,&nbsp;Jeremy Pittman,&nbsp;Caroline Schill,&nbsp;Nanda Wijermans,&nbsp;?rjan Bodin,&nbsp;Stefan Gelcich,&nbsp;Marion Glaser","doi":"10.1111/faf.12678","DOIUrl":"https://doi.org/10.1111/faf.12678","url":null,"abstract":"<p>Meeting the objectives of sustainable fisheries management requires attention to the complex interactions between humans, institutions and ecosystems that give rise to fishery outcomes. Traditional approaches to studying fisheries often do not fully capture, nor focus on these complex interactions between people and ecosystems. Despite advances in the scope and scale of interactions encompassed by more holistic methods, for example ecosystem-based fisheries management approaches, no single method can adequately capture the complexity of human–nature interactions. Approaches that combine quantitative and qualitative analytical approaches are necessary to generate a deeper understanding of these interactions and illuminate pathways to address fisheries sustainability challenges. However, combining methods is inherently challenging and requires understanding multiple methods from different, often disciplinarily distinct origins, demanding reflexivity of the researchers involved. Social–ecological systems’ research has a history of utilising combinations of methods across the social and ecological realms to account for spatial and temporal dynamics, uncertainty and feedbacks that are key components of fisheries. We describe several categories of analytical methods (statistical modelling, network analysis, dynamic modelling, qualitative analysis and controlled behavioural experiments) and highlight their applications in fisheries research, strengths and limitations, data needs and overall objectives. We then discuss important considerations of a methods portfolio development process, including reflexivity, epistemological and ontological concerns and illustrate these considerations via three case studies. We show that, by expanding their methods portfolios, researchers will be better equipped to study the complex interactions shaping fisheries and contribute to solutions for sustainable fisheries management.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"23 5","pages":"1202-1220"},"PeriodicalIF":6.7,"publicationDate":"2022-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12678","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6152495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Three-dimensional ontogenetic shifts of groundfish in the Northeast Pacific","authors":"Lingbo Li,&nbsp;Anne B. Hollowed,&nbsp;Edward D. Cokelet,&nbsp;Michelle M. McClure,&nbsp;Aimee A. Keller,&nbsp;Steve J. Barbeaux,&nbsp;Wayne A. Palsson","doi":"10.1111/faf.12679","DOIUrl":"https://doi.org/10.1111/faf.12679","url":null,"abstract":"<p>It has been more than 100 years since fish were first described to move to deep waters as size increased, termed ‘Heincke's Law’. However, large-scale studies on ontogenetic shifts are rare compared with increased reports of distributional changes in response to temperature, often confounded with the ontogenetic shifts. We fill this gap by examining the distribution of ten abundant groundfish species in three dimensions, depth, latitude and longitude, at 10-cm size intervals within nine subregions of NE Pacific. Here, we utilized large, quality-controlled datasets from random depth-stratified, bottom trawl surveys consistently conducted during summer along the NE Pacific shelf from 1996 to 2015. Groundfish demonstrated complex ontogenetic movements in three dimensions across species, size class and subregion. In addition to the expected ontogenetic deepening, shoaling also occurred and some species demonstrated major ontogenetic shifts in longitude and/or latitude with limited changes in depth. Based on standardized ontogenetic shifts in three dimensions, our analyses show that there were significant differences in aggregate fish ontogenetic shifts between small (≤30 cm) and large (&gt;30 cm) size groups. Small fish exhibited substantially larger ontogenetic shifts in depth than the large size group while both groups showed relatively small shifts in latitude and longitude. Our analyses strongly suggest that size structure and ontogenetic shifts should be included in the population distribution.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"23 5","pages":"1221-1239"},"PeriodicalIF":6.7,"publicationDate":"2022-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6028699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing progress in data reporting by tuna Regional Fisheries Management Organizations","authors":"Kristina N. Heidrich,&nbsp;Maria José Juan-Jordá,&nbsp;Hilario Murua,&nbsp;Christopher D. H. Thompson,&nbsp;Jessica J. Meeuwig,&nbsp;Dirk Zeller","doi":"10.1111/faf.12687","DOIUrl":"https://doi.org/10.1111/faf.12687","url":null,"abstract":"<p>Tuna Regional Fisheries Management Organizations (RFMOs) are responsible for conservation and sustainable management of transboundary tuna resources in Exclusive Economic Zones and Areas Beyond National Jurisdiction (ABNJ). The data collected and analyses performed by tuna RFMOs are one of the main sources of scientific information supporting the management, sustainable use and conservation of biodiversity in the ABNJ. An understanding of the scope and availability of data provided by tuna RFMOs is timely, given the expected establishment of a new legally binding high seas agreement to protect marine biodiversity in the ABNJ. We examined official catch statistics and stock assessments that are accessible in the public domain for the five tuna RFMOs, and evaluated their taxonomic, spatial and temporal resolution. We found that the Atlantic and Indian Ocean tuna RFMOs report catches for a greater number of taxa compared to Pacific RFMOs. There are substantial gaps in the taxonomic resolution of sharks and rays and ‘other teleosts’, and only about half of the reported global catches are georeferenced, despite existing mandatory requirements. Additionally, the estimation and reporting of discards in all tuna RFMOs remains incomplete. Tuna RFMOs have made progress in implementing stock assessments for a wide range of taxa including targeted species with high economic value but also functionally important non-target species with lower economic value. However, assessments should be expanded to cover other bycatch species. We emphasize the importance of accessible and accurate statistics, for supporting the research and societal oversight needed under any future ABNJ biodiversity treaty.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"23 6","pages":"1264-1281"},"PeriodicalIF":6.7,"publicationDate":"2022-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12687","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6139951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}