{"corpus_id":255940895,"paper_sha":"73aa931f6255775acf62b52bdfc91c7a07b60aef","doi":"10.1111/jfb.15325","arxiv_id":null,"pmid":36648087,"pmcid":null,"mag_id":null,"dblp_id":null,"acl_id":null,"title":"Trends in abundance indices derived from commercial fishery for priority marine stocks in the Azores.","year":2023,"publication_date":"2023-01-17","venue":"Journal of Fish Biology","journal":{"name":"Journal of fish biology","pages":null,"volume":null},"journal_issn":null,"journal_title":null,"publication_types":["JournalArticle"],"pubmed_pub_types":["Journal Article"],"s2_fields_of_study":["Medicine","Environmental Science"],"reference_count":0,"citation_count":4,"influential_citation_count":0,"is_open_access":true,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":[{"d":"Animals","mj":false,"ui":"D000818"},{"d":"Conservation of Natural Resources","mj":true,"qs":[{"q":"methods","mj":false,"ui":"Q000379"}],"ui":"D003247"},{"d":"Fisheries","mj":true,"ui":"D005398"},{"d":"Azores","mj":false,"ui":"D001394"},{"d":"Shellfish","mj":false,"ui":"D012758"},{"d":"Hunting","mj":false,"ui":"D000090262"}],"chemicals":null,"comments_corrections":null,"source_flags":5,"s2_open_access_pdf_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/jfb.15325","s2_open_access_landing_url":"https://www.semanticscholar.org/paper/73aa931f6255775acf62b52bdfc91c7a07b60aef","s2_open_access_license":"CCBYNCND","s2_open_access_status":"HYBRID","pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"Large-scale assessments of fish and shellfish populations may be valuable for identifying the impacts of fishing pressure on stocks, but they are rarely possible due to a lack of long-term datasets. In this study, a two-part mixed effect model for lognormal data was used to obtain historical abundance indices for 16 priority fish and shellfish stocks in the Azores region derived from CPUE (kg per day at sea per vessel) and LPUE (kg per landing per vessel). This data was obtained over the past 30 years under the EC Data Collection Framework and, in addition to information on effort and catch, included details about the fishing operation such as quarter, vessel length, and fishing gear. This information was analysed to investigate how abundance indices changed over the years, verify if trends from different data sources were different, and, if possible, relate these results to the population and fishery dynamics. The abundance indices derived from both datasets were generally in agreement with each other. Declining trends have been observed for some commercially important species, such as forkbeard Phycis phycis, European conger Conger conger, parrotfish Sparisoma cretense, red scorpionfish Scorpaena scrofa, offshore rockfish Pontinus kuhlii, common spiny lobster Palinurus elephas, splendid alfonsino Beryx splendens, and alfonsino B. decadactylus, which is concerning because they are particularly slow-growing, long-lived, and have low natural mortality, making them susceptible to overfishing. The results of this study are very important and should help future stock assessment and management initiatives. This article is protected by copyright. All rights reserved.","claims":[{"public_id":"cl_a8dc5151c5a3eaa3e377247babfc5a72","status":"active","text":"A two-part mixed effect model for lognormal data was applied to 30 years of catch per unit effort and landing per unit effort data from the EC Data Collection Framework to derive historical abundance indices for 16 priority fish and shellfish stocks in the Azores.","confidence":0.93,"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":2,"public_id":"4715169a40","public_label":"AK (4715169a40)","roles":["review"],"url":"https://sah.borca.ai/u/4715169a40"},{"id":1165,"public_id":"ezd9qvkvax","public_label":"The Reverser‮ (ezd9qvkvax)","roles":["review"],"url":"https://sah.borca.ai/u/ezd9qvkvax"}],"url":"https://sah.borca.ai/claims/cl_a8dc5151c5a3eaa3e377247babfc5a72"},{"public_id":"cl_705db561556f95288886be57915e918f","status":"active","text":"Abundance indices derived from catch per unit effort and landing per unit effort datasets were generally in agreement with each other.","confidence":0.92,"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":2,"public_id":"4715169a40","public_label":"AK (4715169a40)","roles":["review"],"url":"https://sah.borca.ai/u/4715169a40"},{"id":1165,"public_id":"ezd9qvkvax","public_label":"The Reverser‮ (ezd9qvkvax)","roles":["review"],"url":"https://sah.borca.ai/u/ezd9qvkvax"}],"url":"https://sah.borca.ai/claims/cl_705db561556f95288886be57915e918f"},{"public_id":"cl_9043e244195f66ab41dd0e32ddc7c23b","status":"active","text":"Declining abundance trends were observed for eight commercially important Azores species—including forkbeard (Phycis phycis), European conger (Conger conger), common spiny lobster (Palinurus elephas), and splendid alfonsino (Beryx splendens)—all of which are slow-growing, long-lived, and have low natural mortality, heightening their overfishing susceptibility.","confidence":0.9,"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":2,"public_id":"4715169a40","public_label":"AK (4715169a40)","roles":["review"],"url":"https://sah.borca.ai/u/4715169a40"},{"id":1165,"public_id":"ezd9qvkvax","public_label":"The Reverser‮ (ezd9qvkvax)","roles":["review"],"url":"https://sah.borca.ai/u/ezd9qvkvax"}],"url":"https://sah.borca.ai/claims/cl_9043e244195f66ab41dd0e32ddc7c23b"}],"concepts":[{"public_id":"co_01969dca104fb389c8cbf8205a637dfb","status":"active","name":"fishing pressure","description":"The cumulative impact of commercial fishing effort on fish and shellfish population abundance, whose effects on stocks this study investigates through 30 years of data.","types":["anthropogenic 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