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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">kamniro</journal-id><journal-title-group><journal-title xml:lang="ru">Исследования водных биологических ресурсов Камчатки и северо-западной части Тихого океана</journal-title><trans-title-group xml:lang="en"><trans-title>The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-8212</issn><issn pub-type="epub">2782-6236</issn><publisher><publisher-name>«КамчатНИРО»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15853/2072-8212.2025.76.57-69</article-id><article-id custom-type="edn" pub-id-type="custom">QZCFNY</article-id><article-id custom-type="elpub" pub-id-type="custom">kamniro-275</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ НАУЧНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>FULL ARTICLES</subject></subj-group></article-categories><title-group><article-title>О прогнозировании подходов нерки Oncorhynchus nerka р. Озерной (Западная Камчатка) на основе методологии когортного анализа</article-title><trans-title-group xml:lang="en"><trans-title>On predicting sockeye salmon Oncorhynchus nerka runs in the Ozernaya River (Western Kamchatka) based on cohort analysis methodology</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ильин</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilyin</surname><given-names>O. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ильин Олег Игоревич — канд. физ.-мат. наук, вед. науч. сотрудник </p><p>Петропавловск-Камчатский</p></bio><bio xml:lang="en"><p>Oleg I. Ilyin – Ph. D. (Physics and Mathematics), Leading Researcher </p><p>Petropavlovsk-Kamchatsky</p></bio><email xlink:type="simple">o.ilin@kamniro.vniro.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6646-3241</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бугаев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bugaev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бугаев Александр Викторович — докт. биол. наук, зам. руководителя, Камчатский филиал ВНИРО </p><p>Петропавловск-Камчатский</p></bio><bio xml:lang="en"><p>Alexandr V. Bugaev – D. Sc. (Biology), Deputy Head</p><p>Petropavlovsk-Kamchatsky</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дубынин</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dubynin</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дубынин Владимир Александрович — гл. специалист </p><p>Петропавловск-Камчатский</p></bio><bio xml:lang="en"><p>Vladimir A. Dubynin – Principal Specialist </p><p>Petropavlovsk-Kamchatsky</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-6173-5667</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зикунова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zikunova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зикунова Ольга Владимировна — канд. биол. наук, зав. лабораторией лососевых рыб </p><p>Петропавловск-Камчатский</p></bio><bio xml:lang="en"><p>Olga V. Zikunova – Ph. D. (Biology), Head of the Lab. of Salmonid Fishes </p><p>Petropavlovsk-Kamchatsky</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Камчатский филиал Всероссийского научно-исследовательского института рыбного хозяйства и океанографии</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>25</day><month>09</month><year>2025</year></pub-date><volume>0</volume><issue>76</issue><fpage>57</fpage><lpage>69</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ильин О.И., Бугаев А.В., Дубынин В.А., Зикунова О.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ильин О.И., Бугаев А.В., Дубынин В.А., Зикунова О.В.</copyright-holder><copyright-holder xml:lang="en">Ilyin O.I., Bugaev A.V., Dubynin V.A., Zikunova O.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://kamniro.elpub.ru/jour/article/view/275">https://kamniro.elpub.ru/jour/article/view/275</self-uri><abstract><p>В работе рассматривается один из возможных подходов к моделированию динамики возрастной структуры нерки р. Озерной (Западная Камчатка). Представленная модель является своего рода статистической когортной моделью для указанной единицы запаса. По данным о возрастной структуре производителей в уловах и на нерестилищах, а также численности ската, она позволяет, при заданных условиях, восстановить численность каждой возрастной группы нерки в ретроспективе, оценить долю зрелых рыб и дать вероятностный прогноз подхода производителей нерки р. Озерной на краткосрочную перспективу (1–2 года).</p></abstract><trans-abstract xml:lang="en"><p>One of possible approaches to modeling sockeye salmon age structure dynamics in the Ozernaya River (Western Kamchatka) is analyzed. The model discussed is a kind of statistical cohort model for mentioned stock unit. Using the abundance of juvenile escapement and the data on the age structure of spawners in the catches and in spawning grounds it allows under given conditions to obtain retrospective abundances for all age groups of sockeye salmon, to evaluate mature stock and to make probabilistic forecast for sockeye salmon run in the Ozernaya River for a short-term feature period (1–2 years).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нерка</kwd><kwd>р. Озерная</kwd><kwd>динамика численности</kwd><kwd>возрастная структура</kwd><kwd>прогноз</kwd><kwd>когортная модель</kwd></kwd-group><kwd-group xml:lang="en"><kwd>sockeye salmon</kwd><kwd>Ozernaya River</kwd><kwd>stock abundance dynamics</kwd><kwd>age structure</kwd><kwd>forecast</kwd><kwd>cohort model</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Бугаев А.В. 2015. 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