{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1362825896171425664.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1111/j.1365-2419.1992.tb00006.x"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.1992.tb00006.x"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.1992.tb00006.x"}},{"identifier":{"@type":"NAID","@value":"30029827741"}}],"dc:title":[{"@value":"Sardine and anchovy regime fluctuations of abundance in four regions of the world oceans: a workshop report"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>ABSTRACT</jats:title><jats:p>Regimes of high abundance of sardine (<jats:italic>Sardinops sagax</jats:italic> and <jats:italic>Sardina pilchardus</jats:italic>) have alternated with regimes of high abundance of anchovy (<jats:italic>Engraulis</jats:italic> spp.) in each of the five regions of the world where these taxa co‐occur and have been extensively fished. When one taxon has been plentiful, the other has usually been at a reduced level of abundance, and vice versa. Changes in the four heavily fished regions that support S. <jats:italic>sagax</jats:italic>–the Japanese, Californian, Humboldt, and Benguela systems–from a regime dominated by one taxon to a high level of abundance of the other have occurred more or less simultaneously. In the Pacific Ocean, sardines have tended to increase during periods of increasing global air and sea temperatures and anchovies to decrease. The Japanese system is dominated by sardines to a greater extent than the other systems, and sardines off Japan appear to increase as the Kuroshio Current cools. At the eastern edge of the Pacific Ocean, sardines colonize cooler areas during periods of warming. The Benguela system is out of phase with the three Pacific systems. The four systems all appeared to be in a state of flux in the 1980s. Increased abundance of the subdominant taxon is often one of the first signs of change. Sardines are relatively sedentary in refuge areas when scarce but change behavior to become highly migratory and colonize cooler areas when abundant. Anchovies, by contrast, expand around a fixed geographic center.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380016869118681600","@type":"Researcher","foaf:name":[{"@value":"D. LLUCH‐BELDA"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896171425793","@type":"Researcher","foaf:name":[{"@value":"R. A. SCHWARTZLOSE"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896171425796","@type":"Researcher","foaf:name":[{"@value":"R. SERRA"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896171425664","@type":"Researcher","foaf:name":[{"@value":"R. PARRISH"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896171425794","@type":"Researcher","foaf:name":[{"@value":"T. KAWASAKI"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896171425792","@type":"Researcher","foaf:name":[{"@value":"D. HEDGECOCK"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896171425665","@type":"Researcher","foaf:name":[{"@value":"R. J. M. CRAWFORD"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"10546006"},{"@type":"EISSN","@value":"13652419"}],"prism:publicationName":[{"@value":"Fisheries Oceanography"}],"dc:publisher":[{"@value":"Wiley"}],"prism:publicationDate":"1992-12","prism:volume":"1","prism:number":"4","prism:startingPage":"339","prism:endingPage":"347"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.1992.tb00006.x"},{"@id":"https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.1992.tb00006.x"}],"createdAt":"2007-10-05","modifiedAt":"2023-10-23","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001338650643456","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"加入量あたり産卵資源量解析によるマサバ太平洋系群の資源管理"},{"@language":"ja-Kana","@value":"カニュウリョウ アタリ サンラン シゲンリョウ カイセキ ニヨル マサバ 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