Fish and Fisheries最新文献

A Comparison of Fleet Dynamics Models for Predicting Fisher Location Choice

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2025-02-26 DOI: 10.1111/faf.12886

Paul J. Dolder, Jan Jaap Poos, Michael A. Spence, Dorleta García, Cóilín Minto

{"title":"A Comparison of Fleet Dynamics Models for Predicting Fisher Location Choice","authors":"Paul J. Dolder, Jan Jaap Poos, Michael A. Spence, Dorleta García, Cóilín Minto","doi":"10.1111/faf.12886","DOIUrl":"https://doi.org/10.1111/faf.12886","url":null,"abstract":"Scientific advice for fisheries management rarely takes into account how fishers react to regulations, which can lead to unexpected results and unrealistic expectations of the effectiveness of the management measures. Short‐term decisions about when and where to fish are one of the greatest sources of uncertainty in predicting management outcomes. Several models have been developed to predict how fishers allocate effort in space and time, including mechanistic methods such as gravity and dynamic state variable models, and statistical methods such as random utility and Markov models. These have been individually used to predict effort allocation for various fisheries, but there is no comparative synthesis of their structure and characteristics. We demonstrate strong theoretical links between utility and choice in gravity, random utility, Markov and dynamic state variable models. Using an advanced event‐based simulation framework, we find that mechanistic models bias effort allocation to certain areas when applying commonly used strong assumptions about drivers of effort allocation; and conversely, statistical models accurately predict the distribution of fishing effort under business as usual. However, predictive performance degrades with previously unobserved dynamics, such as a spatial closure. Mechanistic models were less suited to general application under business as usual but provide a useful framework for testing hypotheses about a fishery system in response to policy change. Comparison of simple model formulations yielded significant insight into the characteristics of the models and how they could be used to evaluate alternative management approaches for mixed fisheries.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"239 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507101","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}

引用次数: 0

A Review of Global Fisheries Performance

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2025-02-20 DOI: 10.1111/faf.12890

Frank Asche, Taryn M. Garlock, James L. Anderson, Ruth B. Pincinato, Christopher M. Anderson, Edward V. Camp, Jingjie Chu, Andreea L. Cojocaru, Hakan Eggert, Kai Lorenzen, David C. Love, Ragnar Tveteras

{"title":"A Review of Global Fisheries Performance","authors":"Frank Asche, Taryn M. Garlock, James L. Anderson, Ruth B. Pincinato, Christopher M. Anderson, Edward V. Camp, Jingjie Chu, Andreea L. Cojocaru, Hakan Eggert, Kai Lorenzen, David C. Love, Ragnar Tveteras","doi":"10.1111/faf.12890","DOIUrl":"https://doi.org/10.1111/faf.12890","url":null,"abstract":"Management of fisheries is complex as it combines environmental, economic and social objectives. The relative importance of these objectives is highly debated and the best approaches to achieving good outcomes are unclear. A lack of global and multi‐dimensional data has largely precluded reviews providing comparisons of performances across systems at a large scale. We review fisheries performance by analysing outcomes over 14 dimensions of environmental, economic and community performance using a unique global dataset for 145 fisheries collected with the Fishery Performance Indicators. The fisheries are ranked into three performance groups by an average of their environmental, economic and community scores: the 10% best fisheries, the 10% worst fisheries and the middle 80%. Furthermore, we investigate how four different types of management systems, catch shares, territorial use rights, limited entry and open access, are represented in the three performance groups. The best performing fisheries scored equally or better and the poorest performing fisheries scored equally or worse in environmental, economic and social dimensions. We found three different management systems to be represented among the best performing fisheries, indicating that no specific management system is best. Moreover, some management systems were represented in all three performance categories, indicating that fisheries characteristics or management designs are important elements of fishery performance. The worst performing fisheries were dominated by open access fisheries with no or very limited management.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"127 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462812","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}

引用次数: 0

Salmonid Biomass in Streams Around the World: A Quantitative Synthesis 世界各地溪流中的鲑鱼生物量：定量综述

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2025-02-16 DOI: 10.1111/faf.12887

Kyleisha J. Foote, James W. A. Grant, Pascale M. Biron

{"title":"Salmonid Biomass in Streams Around the World: A Quantitative Synthesis","authors":"Kyleisha J. Foote, James W. A. Grant, Pascale M. Biron","doi":"10.1111/faf.12887","DOIUrl":"https://doi.org/10.1111/faf.12887","url":null,"abstract":"Salmonid fishes are one of the best studied fish taxa, but little is known about their biomass distribution. We created a dataset using published material for over 1000 rivers with estimated salmonid biomass, covering 27 countries, and 11 species. The distribution of salmonid biomass and production across streams was skewed to the right with a mean biomass and production of 5.2 g/m2 (range = 0–70.3 g/m2) and 6.3 g/m2/year (range = 0.03–50.2 g/m2/year), respectively. The top 10% and 1% of salmonid streams in the world had a biomass > 11.9 and 36.5 g/m2, respectively, and a production > 13.9 and 25.6 g/m2/year, respectively. Salmonid production was positively correlated with biomass (r = 0.82, n = 194), with a mean production to biomass (P/B) ratio of 1.08, which differed among species. Mean biomass declined 38% over time, from 8.6 g/m2 before 1980 to 5.4 g/m2 in 2000–2020. Biomass was also higher in small streams (< 10 m wide) and in streams where smaller areas were sampled. Brown trout (Salmo trutta) streams represented a higher proportion of those with biomass > 10 g/m2 than many other species. In addition to the variables mentioned above, salmonid biomass in streams was affected by species, season, method of sampling, elevation, latitude, and migratory strategy. Expanding the list of variables would be useful for developing models to predict salmonid biomass and the conditions for an outstanding salmonid stream, defined as a stream which has a biomass estimate in the top 1% worldwide.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"4 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427138","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}

引用次数: 0

Loss and Gain: Temporal Succession in Different Facets of Fish Diversity Over a Half Century Under Cascade Dam Construction

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2025-02-11 DOI: 10.1111/faf.12885

Yintao Jia, Yu Zhuo, Pedro Cardoso, Junle Li, Jun Wang, Xiaoyun Sui, Xiu Feng, Ren Zhu, Kemao Li, Yifeng Chen

{"title":"Loss and Gain: Temporal Succession in Different Facets of Fish Diversity Over a Half Century Under Cascade Dam Construction","authors":"Yintao Jia, Yu Zhuo, Pedro Cardoso, Junle Li, Jun Wang, Xiaoyun Sui, Xiu Feng, Ren Zhu, Kemao Li, Yifeng Chen","doi":"10.1111/faf.12885","DOIUrl":"https://doi.org/10.1111/faf.12885","url":null,"abstract":"Freshwater biodiversity is increasingly imperilled by human activities, with dam construction posing significant threats to fish communities. Species composition changes through introductions and extinctions have been widely reported, yet the long‐term consequences of cascade dam construction on multiple facets of biodiversity remain poorly understood. Moreover, the compensatory effects of species introductions on extinction have received limited attention. This study presents a comprehensive evaluation of the impact of extinction‐introduction successions, triggered by cascade dam construction, on the taxonomic, phylogenetic, and functional diversity of fish assemblages in the upper Yellow River over five decades. Our results reveal that shifts in species composition significantly increased phylogenetic and functional diversity but not taxonomic diversity, suggesting a greater sensitivity of the former to cascade dam construction. However, introduced species only partially compensate for approximately 50% of phylogenetic and functional diversity losses caused by extinctions. Furthermore, the timing of significant increases in phylogenetic and functional diversity is not synchronised, with all measures gradually stabilising post‐dam construction. Cumulative reservoir capacity, reservoir age, and individual reservoir capacity were identified as key determinants of multifaceted diversity change after dam construction, with cumulative reservoir capacity and reservoir age generally having positive effects, while individual reservoir capacity tended to have a negative impact. These findings stress the urgent need to reassess the compensatory effects of introductions on extinctions under global change, emphasise caution in interpreting short‐term data due to non‐linear diversity patterns, and highlight the importance of using long‐term monitoring and multifaceted diversity metrics in biodiversity conservation actions.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"61 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393423","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}

引用次数: 0

Using High‐Resolution Fisheries Data to Identify Spatial Patterns in Retained Catch Compositions for Mixed Fisheries

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2025-01-27 DOI: 10.1111/faf.12883

Gianfranco Anastasi, Johnathan Ball, Roi L. Martinez, Paul J. Dolder

{"title":"Using High‐Resolution Fisheries Data to Identify Spatial Patterns in Retained Catch Compositions for Mixed Fisheries","authors":"Gianfranco Anastasi, Johnathan Ball, Roi L. Martinez, Paul J. Dolder","doi":"10.1111/faf.12883","DOIUrl":"https://doi.org/10.1111/faf.12883","url":null,"abstract":"Mixed fisheries exploit fish stocks that are heterogeneously distributed in space using gears that are not species selective. This poses a challenge for management as catch limits for less productive stocks constrain catches of more productive stocks leading to losses in yield and economic value. Decoupling catches of stocks caught together in mixed fisheries could increase potential yields and may be achieved through changes in spatial fishing patterns. This study identifies fine‐scale spatial patterns of retained catches for the UK otter trawlers in UK waters by combining vessel monitoring system positional information and logbook data on retained catches. Spatially contiguous units were identified through a combination of Principal Components Analysis and spatial clustering. Our results show a complex spatial structure in the fish assemblage which differs across UK sea areas, with greater similarity between the Northern North Sea and West of Scotland compared to other sea areas. Through simulation, we highlight how fine‐scale spatially resolved fisheries data can identify areas where choke risks from catches of low‐quota, low‐productivity species associated with target species can be reduced. This underscores the value of fine‐scale data for enhancing efficiency and sustainability in mixed fisheries. Wider benefits from the use of fine‐scale data include the ability to identify consistent spatial métier definitions for use in modelling technical interactions. Ultimately, our study informs strategies and approaches that decouple catches of low‐quota, low‐productivity species caught together in mixed fisheries, improving sustainability and the conservation of living resources under complex management challenges.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"159 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050056","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}

引用次数: 0

The Vanishing Vaquita: A Call for Definitive Action

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2025-01-24 DOI: 10.1111/faf.12884

Pablo del Monte‐Luna, Salvador E. Lluch‐Cota, Andrew W. Trites, Andrés Cisneros‐Montemayor, Francisco Arreguín‐Sánchez, Edgar Alcántara‐Razo

引用次数: 0

Effectiveness of Conditioning Strategies in Improving Fish Fitness‐Related Traits

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2025-01-23 DOI: 10.1111/faf.12882

Zonghang Zhang, Guihui Ning, Fei Tong, Wuhan Lin, Yangke Shang, Daomin Peng, Wenhua Liu

引用次数: 0

Eco‐Evolutionary Consequences of Selective Exploitation on Metapopulations Illustrated With Atlantic Salmon 以大西洋鲑鱼为例，选择性开发对大种群的生态进化影响

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2025-01-15 DOI: 10.1111/faf.12881

Amaïa Lamarins, Stephanie M. Carlson, Etienne Prévost, William H. Satterthwaite, Mathieu Buoro

{"title":"Eco‐Evolutionary Consequences of Selective Exploitation on Metapopulations Illustrated With Atlantic Salmon","authors":"Amaïa Lamarins, Stephanie M. Carlson, Etienne Prévost, William H. Satterthwaite, Mathieu Buoro","doi":"10.1111/faf.12881","DOIUrl":"https://doi.org/10.1111/faf.12881","url":null,"abstract":"Although the eco‐evolutionary consequences of dispersal and exploitation are increasingly recognised, consideration of these effects and how they interact for management and conservation remains limited. We addressed this gap by examining population exploitation within a metapopulation framework, using Atlantic salmon as a case study. We compared eco‐evolutionary consequences of alternative exploitation strategies by incorporating selective exploitation based on life‐history traits and spatial dimension of exploitation (i.e., whether populations were net exporters or importers of individuals). We used a demo‐genetic agent‐based model to examine demographic and evolutionary consequences of these strategies across a gradient of population‐specific exploitation rates. At the metapopulation scale, we found both lower abundance and earlier sexual maturation with increasing exploitation, particularly when fishing was selective on larger individuals. The spatial selectivity of exploitation had an overall additional detrimental effect on metapopulation performance and fisheries yield, and induced stronger evolutionary changes than when exploitation was evenly spread over all populations. We discuss the implications of metapopulation functioning for species management and how considering dispersal patterns and intensity might change how we apply harvest. Nevertheless, our findings suggest that the safest approach remains to distribute exploitation efforts evenly across all populations, especially in the absence of variation in intrinsic productivity. However, this strategy might not completely prevent negative consequences at the local scale. Therefore, we advise managers to critically assess the relevance of our results and dispersal assumptions in the specific cases they may have to deal with.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"93 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986320","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}

引用次数: 0

Overfishing Social Fish 过度捕捞社会性鱼类

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2025-01-07 DOI: 10.1111/faf.12880

James A. Wilson, Jarl Giske, Culum Brown

{"title":"Overfishing Social Fish","authors":"James A. Wilson, Jarl Giske, Culum Brown","doi":"10.1111/faf.12880","DOIUrl":"https://doi.org/10.1111/faf.12880","url":null,"abstract":"Social learning is common among vertebrates, including fish. Learning from others reduces the risk and costs of adaptation. In some longer‐lived species, social learning can lead to the formation of persistent groups that pass learned adaptations from one generation to the next (culture). Variations in learned adaptations are subject to natural selection, leading to a second, fast‐paced, fine‐scale evolutionary process that complements genetics and enables adaptation to the peculiarities of local areas. Socially learned knowledge is stored mainly in the minds of older fish and subsequently inherited (learned) by younger fish. Consequently, the persistence of locally adapted groups of long‐lived fish requires the inheritance of genetic and learned adaptations. Local populations of social learners are not often recognised nor conserved by fisheries managers. Fishing usually reduces the relative abundance of older fish far more than younger. We hypothesise that fishing may impair and eventually erase the learned local adaptations of long‐lived fish, leading to the loss of local stocks of these species and significant ecosystem‐wide changes. Fishing may shift abundance towards species not dependent on learned adaptations, i.e., invertebrates and short‐lived fish. The hypothesis leads directly to the idea that conserving populations of long‐lived social learners is likely best accomplished by protecting age and social structure or, more generally, the natural processes, such as social learning, that generate complexity in an adaptive ecosystem. Local area‐based management is aligned with the local processes of social learners and can capture and learn about the effect of human activity at that scale.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"22 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142936086","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}

引用次数: 0

Deep Fjords Are Excellent Natural Infrastructure for Climate Impact Studies 深峡湾是气候影响研究的优秀自然基础设施

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2025-01-05 DOI: 10.1111/faf.12879

Anne Gro Vea Salvanes, Natalya D. Gallo, Martine Røysted Solås, Francesco Saltalamacchia, Dag L. Aksnes, Elin Darelius, Svenja Christiansen, Arild Folkvord, Aino Hosia, Stein Kaartvedt, Lisa Levin, Karin Limburg, Luis Martell, Frank Midtøy, Mari Myksvoll, Bjørg Risebrobakken, Heikki Savolainen, Julie Skadal, Arved Staby

{"title":"Deep Fjords Are Excellent Natural Infrastructure for Climate Impact Studies","authors":"Anne Gro Vea Salvanes, Natalya D. Gallo, Martine Røysted Solås, Francesco Saltalamacchia, Dag L. Aksnes, Elin Darelius, Svenja Christiansen, Arild Folkvord, Aino Hosia, Stein Kaartvedt, Lisa Levin, Karin Limburg, Luis Martell, Frank Midtøy, Mari Myksvoll, Bjørg Risebrobakken, Heikki Savolainen, Julie Skadal, Arved Staby","doi":"10.1111/faf.12879","DOIUrl":"https://doi.org/10.1111/faf.12879","url":null,"abstract":"Fjords provide valuable research opportunities for marine scientists. They are excellent natural infrastructure for climate impact studies associated with hypoxic episodes and consequences for mesopelagic and deep‐sea ecosystems involving oceanographic circulation processes and basin water renewals. Repeated sampling from the same populations is possible, making fjords excellent systems for developing time series of data for climate impact studies. We provide an overview of the 14 years of data from Norwegian West Coast fjords, focusing on Masfjorden, and report major findings from Oslofjorden in Eastern Norway, exhibiting recurrent hypoxia in the basin waters. We document that the oxygen levels in Masfjorden decreased rapidly by over 60% at 450 m depth in < 8 years, which is much faster than the average rate of deoxygenation in the global ocean. We also discuss the increase in the deep‐sea and low‐light‐adapted coronate jellyfish Periphylla periphylla in view of altered optical conditions of the basin water potentially related to deoxygenation. We argue that fjords like Masfjorden and Oslofjorden are not only macrocosms for ecological processes but also are likely an accelerated version of deep oceans with respect to climate impacts.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"136 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925087","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}

引用次数: 0