{"title":"Causes of Variations in Year-Class Strength of Amur Pink Salmon, Oncorhynchus gorbuscha (Walbaum)","authors":"V. I. Ostrovsky","doi":"10.1134/s1063074023070143","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The relationship of Amur pink salmon catches in 1980–2018 with those landed 2 years before the current year’s fishing season is assessed. This relationship can be well approximated by a linear regression equation; the deviations from it are explained almost completely by variations in precipitation and air temperatures in the autumn and winter of the spawning year. It has been shown that the overestimated forecast of pink salmon catch for 2018 is due to the lowest amount of precipitation for the 40-year period with the lowest air temperature in 2016. The causes for the strength variations between the pink salmon year-classes of even- and odd-numbered years are discussed.</p>","PeriodicalId":49584,"journal":{"name":"Russian Journal of Marine Biology","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Marine Biology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1134/s1063074023070143","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: 0
Abstract
The relationship of Amur pink salmon catches in 1980–2018 with those landed 2 years before the current year’s fishing season is assessed. This relationship can be well approximated by a linear regression equation; the deviations from it are explained almost completely by variations in precipitation and air temperatures in the autumn and winter of the spawning year. It has been shown that the overestimated forecast of pink salmon catch for 2018 is due to the lowest amount of precipitation for the 40-year period with the lowest air temperature in 2016. The causes for the strength variations between the pink salmon year-classes of even- and odd-numbered years are discussed.
期刊介绍:
The Russian Journal of Marine Biology was founded in 1975 by Alexey V. Zhirmunsky, member of the Russian Academy of Sciences. The Russian Journal of Marine Biology covers a wide range of research and some applied aspects of marine biology as a synthetic science related to various fields of study on marine biota and environment. It presents fundamental research on biological processes at molecular, cellular, organismal, and populational levels in marine organisms. Consideration is given to marine objects as models in life sciences. The journal also publishes papers dedicated to events in Russian and international marine biological science and the history of biology.