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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">aari</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы Арктики и Антарктики</journal-title><trans-title-group xml:lang="en"><trans-title>Arctic and Antarctic Research</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0555-2648</issn><issn pub-type="epub">2618-6713</issn><publisher><publisher-name>Государственный научный центр Российской Федерации Арктический и антарктический научно-исследовательский институт</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30758/0555-2648-2022-68-2-191-207</article-id><article-id custom-type="elpub" pub-id-type="custom">aari-446</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>ЭКОЛОГИЯ, БИОЦЕНОЛОГИЯ И БИОГЕОГРАФИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ECOLOGY, BIOCENOLOGY AND BIOGEOGRAPHY</subject></subj-group></article-categories><title-group><article-title>Ледовые водоросли в условиях современного состояния водно-ледовой среды Арктического бассейна</article-title><trans-title-group xml:lang="en"><trans-title>Ice algae in current water-ice environmental condition of the Arctic Ocean</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>Мельников</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Melnikov</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Igor A. Melnikov</p><p>Moskow</p></bio><email xlink:type="simple">migor39@yandex.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>Житина</surname><given-names>Л. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhitina</surname><given-names>L. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Ludmila S. Zhitina</p><p>Moskow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, </p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Vladimir V. Ivanov</p><p>Moskow, </p><p>St. Petersburg</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тимофеева</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Timofeeva</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Anna B. Timofeeva</p><p>St. Petersburg</p></bio><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт океанологии им. П.П. Ширшова РАН<country>Россия</country></aff><aff xml:lang="en">Shirshov Institute of Oceanology of Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Московский государственный университет имени М.В. Ломоносова<country>Россия</country></aff><aff xml:lang="en">Lomonosov Moscow State University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Московский государственный университет имени М.В. Ломоносова;&#13;
ГНЦ РФ Арктический и антарктический научно-исследовательский институт<country>Россия</country></aff><aff xml:lang="en">Lomonosov Moscow State University;&#13;
State Scientific Center of the Russian Federation Arctic and Antarctic Research Institute<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru">ГНЦ РФ Арктический и антарктический научно-исследовательский институт<country>Россия</country></aff><aff xml:lang="en">State Scientific Center of the Russian Federation Arctic and Antarctic Research Institute<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>03</day><month>07</month><year>2022</year></pub-date><volume>68</volume><issue>2</issue><fpage>191</fpage><lpage>207</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мельников И.А., Житина Л.С., Иванов В.В., Тимофеева А.Б., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Мельников И.А., Житина Л.С., Иванов В.В., Тимофеева А.Б.</copyright-holder><copyright-holder xml:lang="en">Melnikov I.A., Zhitina L.S., Ivanov V.V., Timofeeva A.B.</copyright-holder><license 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://www.aaresearch.science/jour/article/view/446">https://www.aaresearch.science/jour/article/view/446</self-uri><abstract><p>В современном Северном Ледовитом океане (СЛО) наблюдаются заметные изменения в составе и структуре биологических сообществ, населяющих водно-ледовую среду. За последние два десятилетия в центральных районах СЛО отмечено снижение численности видового состава ледовой флоры и фауны на фоне изменяющейся физической среды их обитания. В условиях современной климатической нестабильности в СЛО важно отслеживать и оценивать их состав, структуру и динамику развития. Важно также сохранять методы обработки собранных материалов для сравнения состояния водно-ледовой биоты в сходных пространственно-временных масштабах бассейна. В настоящем исследовании в качестве индикаторов изменений выбраны центрические и пеннатные диатомовые водоросли, доминирующие в ледовых флористических сообществах. Целью настоящей работы является анализ физического состояния водно-ледовой среды и видового состава ледовых диатомовых водорослей по материалам экспедиций в рамках программы NABOS на НЭС «Академик Трёшников» в Арктическом бассейне в 2018 и 2021 гг. В задачу полевых работ входили наблюдения за состоянием ледяного покрова в районе проведения экспедиций, отбор ледяных кернов на предмет оценки солевого состава и видового состава водорослей, а также СТD-зондирование подледного водного слоя. Анализ собранных материалов показал значительные различия в видовом составе и обилии водорослей между сезонами, что свидетельствует о формировании независимых друг от друга флористических сообществ в современных условиях нестабильной физической среды в центральных районах СЛО, что подтверждает ранее полученные результаты в период 2007–2015 гг. Обсуждаемые материалы получены в короткий период времени и на ограниченных пространствах в зонах продуцирования однолетних льдов на акваториях шельфовых морей и зонах выноса в центральные районы СЛО. Вместе с тем краткосрочные наблюдения дают «мгновенную» информацию о качественном и количественном состоянии ледовых биологических сообществ. Для получения достоверной оценки необходимы длительные наблюдения, которые, возможно, будут организованы в ближайшее время на новых логистических подходах в изучении морской Арктики.</p></abstract><trans-abstract xml:lang="en"><sec><title> </title><p> </p><p>In the Arctic Ocean (AO) of today, there are noticeable changes in the composition and structure of biological communities inhabiting the water-ice environment. Over the past two decades, a decrease in the number of species of the sea ice flora and fauna has been noted in the central regions of the AO due to the changing physical environment of their habitat. In view of the current climatic instability in the AO, it is important to monitor and evaluate their composition, structure and dynamics of development. It is also important to preserve the methods of processing the materials collected in order to compare the state of the water-ice biota on similar spatial and temporal scales of the basin. In the present study, centric and pennate diatoms dominating in ice floristic communities were selected as indicators of changes. The aim of the work is to analyze the physical state of the water-ice environment and the species composition of ice diatoms based on the materials of the expeditions within the NABOS program at the Research Vessel (R/V) “Akademik Treshnikov” in the Arctic Basin in 2018 and 2021. The field work included observations of the state of the sea-ice cover in the area of the expeditions, the selection of ice cores to assess the salt composition and species composition of the algae, as well as CTD-sounding of the under ice — water layer. The analysis of the materials collected showed significant differences in the species composition and abundance of algae between the seasons, which indicates the formation of independent floristic communities in the current conditions of unstable physical environment in the central regions of the AO, which confirms the previously obtained results in the period 2007–2015. The materials under discussion were obtained in a short period of time and in limited spaces in the zones of production of annual ice in the waters of the shelf seas and zones of removal to the central regions of the AO. At the same time, short-term observations provide “instant” information about the qualitative and quantitative state of sea-ice biological communities. In order to obtain reliable estimates, long-term observations are needed, which may be organized in the near future based on new logistical approaches to the study of the marine Arctic.</p></sec><sec><title> </title><p> </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>Арктический бассейн</kwd><kwd>водно-ледовая среда</kwd><kwd>ледовые водоросли</kwd><kwd>состав</kwd><kwd>обилие</kwd><kwd>сходство</kwd><kwd>разнообразие</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Central Arctic Ocean</kwd><kwd>environmental conditions</kwd><kwd>ice algae</kwd><kwd>species composition</kwd><kwd>abundance</kwd><kwd>similarity</kwd><kwd>diversity</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена при финансовой поддержке темы Госзадания № 0149–2018–0009</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The article was supported by State Assignment № 0149–2018–0009</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">Comiso J.J. 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