{"title":"Short-term changes in demersal fish assemblages exploited by an artisanal set gill net fishery in the Caribbean Sea (Colombia)","authors":"C. Salazar-Pérez","doi":"10.7773/cm.v46i1.3041","DOIUrl":null,"url":null,"abstract":"A basic input for implementing ecosystem-based management measures is the knowledge on fish assemblages exploited by multispecies fisheries, such as the set gill net artisanal fishery in the Gulf of Salamanca (GoS), Caribbean Sea (Colombia), which catches a large \nnumber of high-value demersal species. Assemblages of this type were identified in this study, and significant differences ( \nP < 0.01) between \nsampling periods (2008 and 2013) and seasons were found by means of a two-way permutational multivariate analysis of variance. These \nresults were consistent with those obtained with the principal \ncoordinates analysis, indicating the occurrence of short-term structural changes in \nthese assemblages. Interannual and seasonal variations in discriminant and typifying species were also identified using similarity percentages, \nand a decreasing trend in landing per unit effort was established by the bootstrap method. On the other hand, both the geographic location of \nthe fishing grounds and the characterization of historical changes in the set gill nets used in the GoS were determined using \nthe traditional \necological knowledge of local fishermen, who reported a decrease in mesh sizes. In conclusion, temporal variations could be related to changes \nin the gill nets, the fishing trip schedules, and the spatial distribution of fishing effort, all which occurred in response to the decrease in catch \nrates in traditional fishing grounds.","PeriodicalId":50702,"journal":{"name":"Ciencias Marinas","volume":"46 1","pages":"39-56"},"PeriodicalIF":0.5000,"publicationDate":"2020-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ciencias Marinas","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.7773/cm.v46i1.3041","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
引用次数: 1
Abstract
A basic input for implementing ecosystem-based management measures is the knowledge on fish assemblages exploited by multispecies fisheries, such as the set gill net artisanal fishery in the Gulf of Salamanca (GoS), Caribbean Sea (Colombia), which catches a large
number of high-value demersal species. Assemblages of this type were identified in this study, and significant differences (
P < 0.01) between
sampling periods (2008 and 2013) and seasons were found by means of a two-way permutational multivariate analysis of variance. These
results were consistent with those obtained with the principal
coordinates analysis, indicating the occurrence of short-term structural changes in
these assemblages. Interannual and seasonal variations in discriminant and typifying species were also identified using similarity percentages,
and a decreasing trend in landing per unit effort was established by the bootstrap method. On the other hand, both the geographic location of
the fishing grounds and the characterization of historical changes in the set gill nets used in the GoS were determined using
the traditional
ecological knowledge of local fishermen, who reported a decrease in mesh sizes. In conclusion, temporal variations could be related to changes
in the gill nets, the fishing trip schedules, and the spatial distribution of fishing effort, all which occurred in response to the decrease in catch
rates in traditional fishing grounds.
期刊介绍：
A bilingual open-access publication, Ciencias Marinas (CM) is an international peer-reviewed journal that contains original research findings in all areas of marine science. It is published quarterly by the Autonomous University of Baja California, Mexico, and all its contents are publicly available on our journal website. Though a limited number of copies are still printed, the journal is mainly distributed in its electronic format.
CM was conceived in 1973 as part of an academic project aimed to entice local researchers to publicly disclose their findings by adopting the culture of peer-review publishing. This academic project evolved into an international journal after accepting papers from researchers in the United States and, eventually, other parts of the world. Because of the diversity in authorship, CM issues were initially published in either Spanish or English, and occasionally in both languages. It was not until 1984 when CM included both language versions of all its contents, and it then became the fully bilingual journal it still is today. At CM we believe our inclusive format allows us not only to address a wider range of submissions from international authors but also to make published findings available to a wider international audience.
So whether you are looking for information on the redfish in Icelandic waters or the physical and biological properties of the Gulf of California, feel free to peruse CM contents. You may find them to provide source material for your research.
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