<article 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" article-type="research-article" dtd-version="1.2" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">Oceanology</journal-id><journal-title-group><journal-title>Oceanology</journal-title></journal-title-group><issn publication-format="print">0030-1574</issn><issn publication-format="electronic">3034-5979</issn><publisher><publisher-name>Russian Academy of Science</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.7868/S3034597925020089</article-id><title-group><article-title>CHANGES IN THE COMMUNITIES IN THE SOUTHWESTERN KARA SEA AS A RESULT OF THE SNOW CRAB () INVASION</article-title><trans-title-group xml:lang="ru"><trans-title>ИЗМЕНЕНИЯ СООБЩЕСТВ ЮГО-ЗАПАДНОЙ ЧАСТИ КАРСКОГО МОРЯ В РЕЗУЛЬТАТЕ ВСЕЛЕНИЯ КРАБА-СТРИГУНА</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Rudneva</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Руднева</surname><given-names>Е. В. </given-names></name></name-alternatives><email>rudneva_e_v_noemail@ras.ru</email><xref ref-type="aff" rid="aff-1"></xref><xref ref-type="aff" rid="aff-2"></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Azovsky</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Азовский</surname><given-names>А. И. </given-names></name></name-alternatives><email>azovsky_a_i_noemail@ras.ru</email><xref ref-type="aff" rid="aff-3"></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Udalov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Удалов</surname><given-names>А. А. </given-names></name></name-alternatives><email>udalov_a_a_noemail@ras.ru</email><xref ref-type="aff" rid="aff-5"></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Zalota</surname><given-names>A. K.</given-names></name><name xml:lang="ru"><surname>Залота</surname><given-names>А. К. </given-names></name></name-alternatives><email>zalota_a_k_noemail@ras.ru</email><xref ref-type="aff" rid="aff-7"></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Chikina</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Чикина</surname><given-names>М. В. </given-names></name></name-alternatives><email>chikina_m_v_noemail@ras.ru</email><xref ref-type="aff" rid="aff-9"></xref></contrib></contrib-group><aff-alternatives id="aff-1"><aff><institution xml:lang="ru">Институт океанологии им. П.П. Ширшова РАН</institution><institution xml:lang="en">Shirshov Institute of Oceanology of Russian Academy of Sciences</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff><institution xml:lang="ru"></institution><institution xml:lang="en"></institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff><institution xml:lang="ru">Институт океанологии им. П.П. Ширшова РАН; Московский государственный университет им. М.В. Ломоносова</institution><institution xml:lang="en">Shirshov Institute of Oceanology of Russian Academy of Sciences; Lomonosov Moscow State University</institution></aff></aff-alternatives><aff-alternatives id="aff-5"><aff><institution xml:lang="ru">Институт океанологии им. П.П. Ширшова РАН</institution><institution xml:lang="en">Shirshov Institute of Oceanology of Russian Academy of Sciences</institution></aff></aff-alternatives><aff-alternatives id="aff-7"><aff><institution xml:lang="ru">Институт океанологии им. П.П. Ширшова РАН</institution><institution xml:lang="en">Shirshov Institute of Oceanology of Russian Academy of Sciences</institution></aff></aff-alternatives><aff-alternatives id="aff-9"><aff><institution xml:lang="ru">Институт океанологии им. П.П. Ширшова РАН</institution><institution xml:lang="en">Shirshov Institute of Oceanology of Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-11-22" publication-format="electronic"><day>22</day><month>11</month><year>2024</year></pub-date><volume>65</volume><issue>2</issue><fpage>280</fpage><lpage>290</lpage><abstract xml:lang="en"><p>Until recently, the Kara Sea was a relatively stable ecosystem unaffected by alien species, but in the early 21st century the Arctic shelf was invaded by the snow crab . This predator has a wide dietary range and can feed on echinoderms, especially ophiuras, molluscs, polychaetes and crustaceans. This article reports data on the study of benthic communities of the southwestern Kara Sea, based on the materials collected in 2014 and 2019 (before and after the mass appearance of the snow crab). The period of 2014–2019 was marked by significant changes in the structure of benthic communities, while abiotic parameters (near-bottom temperature, salinity and sediment characteristics) remained almost constant at the investigated stations. The most significant changes affected the megafauna. The total abundance and biomass of the megabenthos decreased, the abundance of dominant species also reduced, and the species structure became more even. Most likely, the observed transformation of the benthic communities is related to the establishment of the snow crab, the most affected were dominant benthic species, which are the main prey items of this crab.</p></abstract><trans-abstract xml:lang="ru"><p>До недавнего времени Карское море представляло собой относительно стабильную экосистему, не подверженную влиянию чужеродных видов, однако в начале XXI века на арктическом шельфе произошла инвазия краба-стригуна . Краб имеет широкий спектр питания, включающий, в частности, офиур, моллюсков, полихет и ракообразных. Нами приведены результаты исследования донных сообществ юго-западной части Карского моря на материале 2014 и 2019 гг. (до и после массового появления краба-стригуна). За период 2014–2019 гг. в структуре донных сообществ произошли значительные преобразования, при этом абиотические параметры среды (придонные температура, соленость, характер грунта) практически не изменились. Наибольшие изменения затронули метафауну. Снизились общая численность и биомасса мегабентоса, упало обилие доминирующих видов, увеличилась выравненность видовой структуры. Наиболее пострадали массовые виды бентоса, которые являются основными пищевыми объектами краба-стригуна.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Array бентосные сообщества Карское море</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Array бентосные сообщества Карское море</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Исследование выполнено за счет гранта Российского научного фонда № 23-27-00028 (https://rscf.ru/project/23-27-00028/)</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>Исследование выполнено за счет гранта Российского научного фонда № 23-27-00028 (https://rscf.ru/project/23-27-00028/)</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>B1</label><citation-alternatives><mixed-citation xml:lang="ru">Азовский А.И. 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