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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">tinro</journal-id><journal-title-group><journal-title xml:lang="ru">Известия ТИНРО</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya TINRO</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1606-9919</issn><issn pub-type="epub">2658-5510</issn><publisher><publisher-name>ТИНРО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26428/1606-9919-2024-204-548-567</article-id><article-id custom-type="edn" pub-id-type="custom">QCIGEH</article-id><article-id custom-type="elpub" pub-id-type="custom">tinro-974</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>БИОЛОГИЧЕСКИЕ РЕСУРСЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOLOGICAL RESOURCES</subject></subj-group></article-categories><title-group><article-title>Донно-пелагические связи гидробионтов в Карском море по данным δ15N и δ13С и питания рыб</article-title><trans-title-group xml:lang="en"><trans-title>Bottom-pelagic links of hydrobionts in the Kara Sea according to data on δ15N and δ13C and feeding of fish</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-8385-7770</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Горбатенко</surname><given-names>К. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Gorbatenko</surname><given-names>K. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Горбатенко Константин Михайлович, доктор биологических наук, главный научный сотрудник</p><p>690091, г. Владивосток, пер. Шевченко, 4</p></bio><bio xml:lang="en"><p>Konstantin M. Gorbatenko, D.Biol., principal researcher</p><p>4, Shevchenko Alley, Vladivostok, 690091</p></bio><email xlink:type="simple">konstantin.gorbatenko@tinro.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/0000-0002-2327-2979</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мельников</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Melnikov</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мельников Игорь Владимирович, кандидат биологических наук, заместитель руководителя филиала</p><p>690091, г. Владивосток, пер. Шевченко, 4</p></bio><bio xml:lang="en"><p>Igor V. Melnikov, Ph.D., deputy head</p><p>4, Shevchenko Alley, Vladivostok, 690091</p></bio><email xlink:type="simple">igor.melnikov@tinro.vniro.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Тихоокеанский филиал ВНИРО (ТИНРО)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pacific branch of VNIRO (TINRO)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>08</day><month>10</month><year>2024</year></pub-date><volume>204</volume><issue>3</issue><fpage>548</fpage><lpage>567</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Горбатенко К.М., Мельников И.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Горбатенко К.М., Мельников И.В.</copyright-holder><copyright-holder xml:lang="en">Gorbatenko K.M., Melnikov I.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://izvestiya.tinro-center.ru/jour/article/view/974">https://izvestiya.tinro-center.ru/jour/article/view/974</self-uri><abstract><p>Для сравнения трофических характеристик в пелагических и донных сообществах в тканях рыб, а также у зоопланктона и зообентоса в Карском море был изучен изотопный состав углерода и азота (δ13С и δ15N). На исследованной акватории у гидробионтов наблюдаются относительно низкие значения δ13С. На основании устойчивых различий в изотопном составе углерода между зоопланктоном и зообентосом граница между пелагическим и донным сообществами соответствует среднему содержанию δ13С –21,5 ‰. Значения δ15N проанализированных гидробионтов в пелагическом и донном сообществах варьировали в диапазоне от 6,4 (у двустворчатых моллюсков Serripes groenlandicus) до 16,3 ‰ (у ликода Lycodes seminudus) и занимали 3 трофических уровня, отражая элемент хищничества. Трофические связи в Карском море демонстрируют высокую степень взаимозависимости донного и пелагического сообществ, поскольку пелагические и донные рыбы в той или иной степени являются потребителями как донной, так и пелагической пищи. Содержание изотопа углерода 13С в тканях и исследования питания рыб показали, что около 40 % рассмотренных видов донного нектона в основном замыкаются на пелагическую пищевую сеть, обходя традиционную глубоководную. У пелагических рыб основу питания составляют пелагические объекты, хотя у доминирующего вида нектона — сайки — с увеличением размеров возрастает доля зообентоса, а у камбалы-ерша — уменьшается.</p></abstract><trans-abstract xml:lang="en"><p>To compare trophic properties in pelagic and benthic communities of the Kara Sea, isotopic composition of carbon and nitrogen (δ13C and δ15N) was examined in tissues of zooplankton, zoobenthos, and fish. The organisms exhibited rather low δ13C values in the surveyed area. Because of stable difference in isotopic composition of carbon for zooplankton and zoobenthos, the pelagic and benthic communities could be separated by the level δ13C = –21.5 ‰, on average. The δ15N values for these communities varied within their 3 trophic levels in the range from 6.4 ‰ (for bivalve Serripes groenlandicus) to 16.3 ‰ (for lycod Lycodes seminudus), reflecting the input of predation. The bottom and pelagic communities in the Kara Sea demonstrated trophic interdependence. Both pelagic and bottom fish species, more or less, consumed both pelagic and benthic prey. Taking into account the content of 13C isotope in tissues of zooplankton and zoobenthos, about 40 % of the bottom nekton species were linked mainly with the pelagic food web and bypassed the benthic one. Pelagic fish fed mainly on pelagic prey, though the portion of zoobenthos in food of the dominant species — arctic cod had increased with the fish size increasing. On the contrary, the portion of zoobenthos in food of ruffed flounder had decreases with their size.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Карское море</kwd><kwd>гидробионты</kwd><kwd>зоопланктон</kwd><kwd>зообентос</kwd><kwd>нектон</kwd><kwd>кормовые организмы</kwd><kwd>стабильные изотопы</kwd><kwd>азот</kwd><kwd>углерод</kwd><kwd>трофический статус</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Kara Sea</kwd><kwd>hydrobiont</kwd><kwd>zooplankton</kwd><kwd>zoobenthos</kwd><kwd>nekton</kwd><kwd>prey</kwd><kwd>stable isotope</kwd><kwd>nitrogen</kwd><kwd>carbon</kwd><kwd>trophic status</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование не имело спонсорской поддержки.</funding-statement><funding-statement xml:lang="en">The study had no sponsor funding.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Арашкевич Е.Г. 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