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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">litosphere</journal-id><journal-title-group><journal-title xml:lang="ru">Литосфера</journal-title><trans-title-group xml:lang="en"><trans-title>LITHOSPHERE (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1681-9004</issn><issn pub-type="epub">2500-302X</issn><publisher><publisher-name>A.N. Zavaritsky Institute of Geology and Geochemistry</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24930/1681-9004-2018-18-6-914-927</article-id><article-id custom-type="elpub" pub-id-type="custom">litosphere-261</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>Статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>Реконструкция этапов развития озера Тургояк (Южный Урал) в голоцене</article-title><trans-title-group xml:lang="en"><trans-title>Reconstruction of Turgoyak lake (the Southern Urals) ecosystem changes in holocene</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>Масленникова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Maslennikova</surname><given-names>Anna V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>456317, Челябинская обл., г. Миасс, Ильменский заповедник</p></bio><bio xml:lang="en"><p>Ilmeny State reserve, Miass, Chelyabinsk region 456317</p></bio><email xlink:type="simple">adenophora@inbox.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>Удачин</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Udachin</surname><given-names>Valerii N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>454080, Челябинская обл., г. Челябинск, просп. Ленина, 76</p></bio><bio xml:lang="en"><p>76 Lenin av., Chelyabinsk 454080</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>Дерягин</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Deryagin</surname><given-names>Vladimir V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>454080, Челябинская область, г. Челябинск, просп. Ленина, 69</p></bio><bio xml:lang="en"><p>69 Lenin av., Chelyabinsk 454080</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>Штенберг</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shtenberg</surname><given-names>Mikhail V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>456317, Челябинская обл., г. Миасс, Ильменский заповедник</p></bio><bio xml:lang="en"><p>Ilmeny State reserve, Miass, Chelyabinsk region 456317</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт минералогии УрО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Mineralogy UB RAS</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Южно-Уральский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South Ural State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Южно-Уральский государственный гуманитарно-педагогический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South Ural State Humanitarian Pedagogical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>28</day><month>12</month><year>2018</year></pub-date><volume>0</volume><issue>6</issue><fpage>914</fpage><lpage>927</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Масленникова А.В., Удачин В.Н., Дерягин В.В., Штенберг М.В., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Масленникова А.В., Удачин В.Н., Дерягин В.В., Штенберг М.В.</copyright-holder><copyright-holder xml:lang="en">Maslennikova A.V., Udachin V.N., Deryagin V.V., Shtenberg 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://www.lithosphere.ru/jour/article/view/261">https://www.lithosphere.ru/jour/article/view/261</self-uri><abstract><p>Объект исследования. В статье приведены данные комплексного исследования колонки донных отложений (265 см) оз. Тургояк в целях реконструкции основных этапов его развития и оценки роли палеоклимата голоцена в изменении физико-химических параметров воды озера. Материалы и методы. Для реконструкций использованы геохимические данные, данные радиоуглеродного датирования и результаты диатомового анализа колонки донных отложений. В статье предложены геохимические индексы, полученные на основе статистического анализа данных химического состава поверхностных отложений и гидрохимии 56 озер Южного и Среднего Урала: показатель содержания органического вещества (ОМ = LOI550ºС/(Al2O3 + TiO2 + Na2O + K2O)) и модуль минерализации озерной воды (ММ = LOI950ºC/LOI550ºС). Результаты. На основе радиоуглеродного датирования определено, что осадконакопление в оз. Тургояк началось более 12 тыс. к.л.н. (калиброванных лет назад). Установлена связь изменений литологии и геохимии колонки донных отложений оз. Тургояк с глобальными (11.8, 11.2, 8.2 тыс. к.л.н.) и региональными (12, 10.3 тыс. к.л.н.) климатическими событиями Северного полушария в голоцене. Реконструировано четыре основных этапа развития озера: 1) начало озерного осадконакопления (&gt;12.1 тыс. к.л.н.); 2) этап мелководного озера с повышенной минерализацией (12.1–11.2 тыс. к.л.н.); 3) этап возрастания глубины и снижения минерализации (11.2–8.0 тыс. к.л.н.); 4) этап устойчивого увеличения содержания органического вещества в воде (&lt;8.0 тыс. к.л.н.). Выводы. На основе оценки значений модуля минерализации и концентраций диатомей-мезогалобов в колонке донных отложений сделан вывод о резком возрастании минерализации воды озера в результате потепления климата в раннем голоцене (11.8–11.2 тыс. к.л.н). С помощью анализа показателя содержания органического вещества и индекса сапробности Пантле–Букка установлено начало возрастания содержания органического вещества в воде в ответ на потепление климата, начавшееся около 9–8 тыс. к.л.н. Таким образом, реконструированы неоднократные изменения физико-химических параметров оз. Тургояк в голоцене и неодинаковая реакция озерной экосистемы на потепление климата на разных этапах развития озера.</p></abstract><trans-abstract xml:lang="en"><p>Object. Multi-proxy analysis of 265 cm long sediments core of Lake Turgoyak, one of the deepest lakes of the Southern Urals, is presented. Materials and methods. The lake ecosystem changes was reconstructed based on diatom, radiocarbon dating and geochemical analysis. Statistical treatment of the surface sediments composition and hydrochemistry data of 56 lakes from Southern and Middle Urals lakes database allowed to obtain geochemical indexes for reconstruction of water parameters: index of organic matter content (ОМ = LOI550ºС/(Al2O3 + TiO2 + Na2O + K2O)) and index of salinity (ММ = LOI950ºC/LOI550ºС). Results. Radiocarbon dating shows that sedimentation in Lake Turgoyak was began more than 12 cal kyr BP ago. Each of six lithological units of sediments core is characterized by its own geochemical features and associated with global (11.8, 11.2, 8.2 cal kyr BP) and regional (12, 10.3 cal kyr BP) climate events of the Northern Hemisphere. Four main stages of Lake ecosystem development were identified: 1) the beginning of lake sedimentation (&gt;12.1 cal kyr BP); 2) the stage of a subsaline shallow-water lake (12.1–11.2 cal kyr BP); 3) the stage of a freshwater lake with increased water-level (11.2–8.0 cal kyr BP); 4) the stage of water organic matter increase (&lt;8.0 cal kyr BP). Conclusions. High content of mesohalobic diatoms and salinity module values showed significant increase of lake water salinity as response to Early Holocene climate warming (11.8–11.2 cal kyr BP). Pantle-Buck’s Saprobity Index and OM values pointed to the lake water organic matter increase due to the next climate warming since 9–8 cal kyr BP. Thus, Lake Turgoyak water parameters were reapeatedly changed during the Holocene. However the response of lake ecosystem was different in different periods of its development.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>озеро Тургояк</kwd><kwd>колонка донных отложений</kwd><kwd>реконструкция</kwd><kwd>голоцен</kwd><kwd>геохимический модуль</kwd><kwd>диатомеи</kwd><kwd>база данных озер Южного и Среднего Урала</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Lake Turgoyak</kwd><kwd>sediments core</kwd><kwd>reconstruction</kwd><kwd>Holocene</kwd><kwd>geochemical index</kwd><kwd>diatoms</kwd><kwd>Southern and Middle Urals lakes database</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают благодарность М.Н. Маляренок, Г.Ф. Лонщаковой, Л.Г. Удачиной, Н.И. Вализер, Ю.Ф. Мельновой, Т.В. Семеновой, К.А. Филипповой, М.С. Свиренко за помощь в анализе донных отложений и вод исследованных озер. Работа выполнена при поддержке РФФИ в рамках научного проекта № 16-35-00103 мол_а. Построение возрастной модели и силикатный анализ колонки донных отложений оз. Тургояк выполнены при финансовой поддержке комплексной программы фундаментальных исследований УрО РАН (проект № 18-5-5-43).</funding-statement><funding-statement xml:lang="en">The authors are grateful to M.N. Malyarenok, G.F. Lonshchakova, L.G. Udachina, N.I. Valizer, Yu.F. Melnova, T.V. Semenova, K.A. Filippova, M.S. Svirenko for their help in the analysis of bottom sediments and waters of the investigated lakes. This work was supported by the Russian Foundation for Basic Research in the framework of the scientific project No. 16-35-00103 мол_а. Construction of the age model and silicate analysis of the Lake Turgoyak sediments core. 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