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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">vestnik-bio-msu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Московского университета. Серия 16. Биология</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik Moskovskogo universiteta. Seriya 16. Biologiya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0137-0952</issn><publisher><publisher-name>Lomonosov Moscow State University,  School of Biology</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestnik-bio-msu-791</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>ОРИГИНАЛЬНОЕ ИССЛЕДОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RESEARCH ARTICLE</subject></subj-group></article-categories><title-group><article-title>Пространственное распределение планктонных пикоцианобактерий на шельфе Карского моря, моря Лаптевых и Восточно-Сибирского моря</article-title><trans-title-group xml:lang="en"><trans-title>The spatial distribution of plankton picocyanobacteria on the shelf of the Kara, Laptev, and East Siberian Seas</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>Белевич</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Belevich</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Белевич Татьяна Алексеевна — кандидат биологических наук, ведущий научный сотрудник кафедры гидробиологии биологического факультета МГУ.</p><p>119234,Москва, Ленинские горы, д. 1, стр. 12, тел: 8-495-939-27-91</p></bio><bio xml:lang="en"><p>Department of Hydrobiology, School of Biology.</p><p>Leninskiye gory 1—12, Moscow, 119234</p></bio><email xlink:type="simple">belevich@mail.bio.msu.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>Ильяш</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilyash</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ильяш Людмила Васильевна — доктор биологических наук, профессор кафедры гидробиологии биологического факультета МГУ.</p><p>119234,Москва, Ленинские горы, д. 1, стр. 12Ю тел: 8-495-939-2791</p></bio><bio xml:lang="en"><p>Department of Hydrobiology, School of Biology.</p><p>Leninskiye gory 1—12, Moscow, 119234</p></bio><email xlink:type="simple">ilyash@mail.bio.msu.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>Чульцова</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Tchultsova</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чульцова Анна Леонидовна — научный сотрудник.</p><p>163061, Архангельск, наб. Сев. Двины, д.112, корп.3, тел: 8-8182-42-00-47</p></bio><bio xml:lang="en"><p>Northern Dvina Embankment, 112, Arkhangelsk, 163061</p></bio><email xlink:type="simple">an-2345@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Флинт</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Flint</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Флинт Михаил Владимирович— академик РАН, доктор биологических наук, заведующий лаборатории Экологии планктона.</p><p>117997, Москва, Нахимовский проспект, дом 36, тел: 9-499-124-8515</p></bio><bio xml:lang="en"><p>Nahimovskiy pr., 36, Moscow, 117997</p></bio><email xlink:type="simple">m_flint@ocean.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Северо-Западное отделение Института океанологии имени П.П. Ширшова, РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Northwestern Division, Shirshov Institute of Oceanology, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт Океанологии имени П.П. Ширшова, РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>P.P.Shirshov Institute of Oceanology, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>12</day><month>12</month><year>2019</year></pub-date><volume>74</volume><issue>4</issue><fpage>247</fpage><lpage>253</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Белевич Т.А., Ильяш Л.В., Чульцова А.Л., Флинт М.В., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Белевич Т.А., Ильяш Л.В., Чульцова А.Л., Флинт М.В.</copyright-holder><copyright-holder xml:lang="en">Belevich T.A., Ilyash L.V., Tchultsova A.L., Flint M.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://vestnik-bio-msu.elpub.ru/jour/article/view/791">https://vestnik-bio-msu.elpub.ru/jour/article/view/791</self-uri><abstract><p>Анализ пространственного распределения планктонных пикоцианобактерий проведен на меридиональном разрезе, проходящем через шельф Карского моря, моря Лаптевых и Восточно-Сибирского моря от 58° до 168° в.д. Численность пикоцианобактерий в Карском море составила в среднем 0,48±1,2∙109 клеток/м3, в море Лаптевых — 0,16±0,24∙109 клеток/м3, в Восточно-Сибирском море — 0,25±0,43∙109 клеток/м3. Колебание численности пикоцианобактерий определялось наличием их аллохтонных источников — речного стока и трансформированных северо-атлантических вод. Наибольшие значения численности выявлены в районах влияния стока сибирских рек Оби, Хатанги, Индигирки и Колымы и составили 0,5-109 клеток/м3 (река Обь), 0,2∙109 клеток/м3 (река Хатанга), 0,4∙109 клеток/м3 (река Индигирка) и 1,6∙109 клеток/м3 (река Колыма). Средний вклад пикоцианобактерий в суммарную численность и биомассу пикофитопланктона в западной части Карского моря составил 37% и 36% соответственно. В остальных исследуемых районах средний вклад пикоцианобактерий в суммарную численность фототрофного пикопланктона не превышал 7%, в суммарную биомассу — 6%. По всему массиву полученных данных выявлена высоко достоверная (р&lt;&lt;0,01) положительная связь между численностью пикоцианобактерий и температурой воды (р=0,003).</p></abstract><trans-abstract xml:lang="en"><p>The spatial distribution of picocyanobacteria on the arctic longitude transect passing through the shelf of the Kara, Laptev and East Siberian seas from 58° to 168° E was studied. In the Kara Sea the picocyanobacteria abundance averaged 0.48±1.2 109 cell/m3, in the Laptev Sea — 0.16±0.24∙109 cell/m3, in the East Siberian Sea — 0.25±0.43∙109 cell/m3. The abundance fluctuations of photoautotrophic prokaryotes were determined by the presence of allochthones picocyanobacteria sources - river runoff and transformed North Atlantic waters. Highest abundances were observed in the areas of the runoff influence of the Siberian Rivers Ob, Khatanga, Indigirka and Kolyma and averaged 0.5∙109 cell/m3 (river Ob), 0.2∙109 cell/m3 (river Khatanga), 0.4∙109 cell/m3 (river Indigirka) и 1.6∙109 cell/m3 (river Kolyma). The average contribution of picocyanobacteria to the total abundance and biomass of picoforms in the western part of the Kara Sea was 37% and 36% respectively. In other areas, the average contribution of picocyanobacteria to the total abundance of photo trophic picoplankton did not exceed 7%, to the total biomass — 6%. A highly reliable (p&lt;&lt;0.01) positive correlation between the abundance and biomass of picocyanobacteria and the water temperature (p = 0.003) was revealed over the entire array of data obtained.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>пикофитопланктон</kwd><kwd>пикоцианобактерии</kwd><kwd>Арктика</kwd><kwd>Обь</kwd><kwd>Хатанга</kwd><kwd>Индигирка</kwd><kwd>Колыма</kwd></kwd-group><kwd-group xml:lang="en"><kwd>picophytoplankton</kwd><kwd>picocyanobacteria</kwd><kwd>Arctic region</kwd><kwd>Ob</kwd><kwd>Khatanga</kwd><kwd>Indigirka</kwd><kwd>Kolyma</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках Государственного задания МГУ имени М.В. Ломоносова часть 2 (тема №АААА–А16–116021660052–0). 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