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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">hydrophysics</journal-id><journal-title-group><journal-title xml:lang="ru">Фундаментальная и прикладная гидрофизика</journal-title><trans-title-group xml:lang="en"><trans-title>Fundamental and Applied Hydrophysics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-6673</issn><issn pub-type="epub">2782-5221</issn><publisher><publisher-name>St. Petersburg Research Center of the Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.59887/2073-6673.2024.17(2)-7</article-id><article-id custom-type="elpub" pub-id-type="custom">hydrophysics-1327</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>ГИДРОФИЗИЧЕСКИЕ И БИОГЕОХИМИЧЕСКИЕ ПОЛЯ И ПРОЦЕССЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>HYDROPHYSICAL AND BIOGEOCHEMICAL FIELDS AND PROCESSES</subject></subj-group></article-categories><title-group><article-title>Макрозообентос восточной части Финского залива: современное состояние и влияние на биогеохимические процессы</article-title><trans-title-group xml:lang="en"><trans-title>Macrozoobenthos of The Eastern Gulf of Finland: Current State and Influence on Biogeochemical Processes</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8581-6994</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Максимов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Maximov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Максимов Алексей Александрович, ведущий научный сотрудник, доктор биологических наук</p><p>199034, Санкт-Петербург, Университетская наб., д. 1</p><p>WoS ResearcherID R-9101-2016</p><p>Scopus Author ID 14060602000</p></bio><bio xml:lang="en"><p>1 Universitetskaya Nab., 199034, St. Petersburg</p></bio><email xlink:type="simple">alexeymaximov@mail.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/0000-0003-3057-5596</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Березина</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Berezina</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Березина Надежда Александровна, ведущий научный сотрудник, кандидат биологических наук</p><p>199034, Санкт-Петербург, Университетская наб., д. 1</p><p>Web of Science ResearcherID: R-1968-2016</p><p>Scopus Author ID: 35581205300</p></bio><bio xml:lang="en"><p>1 Universitetskaya Nab., 199034, St. Petersburg</p></bio><email xlink:type="simple">nadezhda.berezina@zin.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Максимова</surname><given-names>О. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Maximova</surname><given-names>O. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Максимова Ольга Борисовна, старший научный сотрудник, кандидат биологических наук</p><p>199053 Санкт-Петербург, наб. Макарова, д. 26</p><p>Scopus Author ID 58671595400</p></bio><bio xml:lang="en"><p>26 Nab. Makarova, 199053, St Petersburg</p></bio><email xlink:type="simple">olgamaximova@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Зоологический институт Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Zoological Institute of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Санкт-Петербургский филиал Всероссийского научно-исследовательского института рыбного хозяйства и океанографии</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg Branch of the Russian Federal Research Institute of Fisheries and Oceanography</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>21</day><month>07</month><year>2024</year></pub-date><volume>17</volume><issue>2</issue><fpage>81</fpage><lpage>93</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Максимов А.А., Березина Н.А., Максимова О.Б., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Максимов А.А., Березина Н.А., Максимова О.Б.</copyright-holder><copyright-holder xml:lang="en">Maximov A.A., Berezina N.A., Maximova O.B.</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://hydrophysics.spbrc.ru/jour/article/view/1327">https://hydrophysics.spbrc.ru/jour/article/view/1327</self-uri><abstract><p>Макрозообентос играет важную роль в биогеохимических процессах. В восточной части Финского залива в последние десятилетия макрозообентос быстро меняется вследствие массового развития чужеродных видов кольчатых червей. На основе данных наблюдений на 24 станциях в 2019–2021 гг. рассмотрено современное состояние донных сообществ Финского залива. По сравнению с началом 2010-х гг. в открытых районах залива увеличилась биомасса двустворчатых моллюсков Macoma balthica. Практически восстановились популяции ледниковых реликтовых ракообразных, сильно сократившиеся в начале 2000-х гг., вследствие придонной гипоксии. Это привело к снижению доли чужеродных полихет Marenzelleria spp. в численности и биомассе макрозообентоса. Также увеличилось количество олигохет за счет распространения чужеродного вида Tubificoides pseudogaster. Вследствие различий видов по образу жизни и биотурбационной деятельности произошедшие изменения в бентосе должны влиять на процессы на границе вода — дно. Вероятно, увеличение поступления фосфора из донных осадков в современных условиях по сравнению с периодом тотального доминирования полихет в донных сообществах в начале 2010-х гг.</p></abstract><trans-abstract xml:lang="en"><p>Macrozoobenthos plays an important role in biogeochemical processes. In the eastern part of the Gulf of Finland, macrozoobenthos has been changing rapidly in recent decades due to the massive development of alien species of annelids. The current state of benthic communities in the Gulf of Finland is considered based on data at 24 stations in 2019–2021. In open areas of the bay, the biomass of the bivalves Macoma balthica increased as compared to the beginning of the 2010s. The populations of glacial relict crustaceans, which had greatly decreased in the early 2000s due to benthic hypoxia, have practically recovered. The abundance of oligochaetes has also increased due to the spread of the alien species Tubificoides pseudogaster. This led to a decrease in the proportion of alien polychaetes Marenzelleria spp. in the abundance and biomass of macrozoobenthos. Due to differences between species in living and bioturbation activity, the changes that have occurred in the benthos should affect the processes at the water–bottom interface. There is likely to be an increase in the supply of phosphorus from bottom sediments under modern conditions compared to the period of total dominance of polychaetes in benthic communities in the early 2010s.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>зообентос</kwd><kwd>донные сообщества</kwd><kwd>чужеродные виды</kwd><kwd>полихеты</kwd><kwd>олигохеты</kwd><kwd>Marenzelleria spp.</kwd><kwd>биотурбация</kwd><kwd>хлорофилл</kwd><kwd>Балтийское море</kwd></kwd-group><kwd-group xml:lang="en"><kwd>zoobenthos</kwd><kwd>benthic communities</kwd><kwd>alien species</kwd><kwd>polychaetes</kwd><kwd>oligochaetes</kwd><kwd>Marenzelleria spp.</kwd><kwd>bioturbation</kwd><kwd>chlorophyll</kwd><kwd>Baltic Sea</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена по госзаданию Министерства науки и высшего образования Российской Федерации (темы № 122031100274-7 и 122031100283-9) при частичной поддержке Программы приграничного сотрудничества Россия–Эстония, ER90 HAZLESS (2019–2021).</funding-statement><funding-statement xml:lang="en">Macrozoobenthos of The Eastern Gulf of Finland: Current State and Influence on Biogeochemical Processes</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">Бреховских В.Ф., Казмирук В.Д., Вишневская Г.Н. 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