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<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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Geomorfologiâ i paleogeografiâ</journal-id><journal-title-group><journal-title xml:lang="en">Geomorfologiâ i paleogeografiâ</journal-title><trans-title-group xml:lang="ru"><trans-title>Геоморфология и палеогеография</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2949-1789</issn><issn publication-format="electronic">2949-1797</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">660688</article-id><article-id pub-id-type="doi">10.31857/S2949178923040096</article-id><article-id pub-id-type="edn">YCAWCP</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Paleolimnological research in Russia: from Kaliningrad to Kamchatka</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Палеолимнологические исследования в России: от Калининграда до Камчатки</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">DEVELOPMENT OF A REFERENCE TRANSECT BASED ON GPR DATA FOR WETLANDS IN THE SOUTHEASTERN PART OF THE ONEGA LOWLAND<ext-link ext-link-type="uri" xlink:href="#FN2"><sup>2</sup></ext-link></article-title><trans-title-group xml:lang="ru"><trans-title>Создание опорной трансекты на основе данных георадиолокации для водно-болотных угодий юго-восточной части прионежской низменности</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ryazantsev</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Рязанцев</surname><given-names>П. А.</given-names></name></name-alternatives><email>chthonian@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ignashov</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Игнашов</surname><given-names>П. А.</given-names></name></name-alternatives><email>paul.ignashov@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Department of Multidisciplinary Scientific Research, Karelian Research Centre of RAS</institution></aff><aff><institution xml:lang="ru">Отдел комплексных научных исследований КарНЦ РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Institute of Biology, Karelian Research Centre of RAS</institution></aff><aff><institution xml:lang="ru">Институт биологии КарНЦ РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-10-01" publication-format="electronic"><day>01</day><month>10</month><year>2023</year></pub-date><volume>54</volume><issue>4</issue><fpage>57</fpage><lpage>71</lpage><history><date date-type="received" iso-8601-date="2025-02-22"><day>22</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, П.А. Рязанцев, П.А. Игнашов</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, П.А. Рязанцев, П.А. Игнашов</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">П.А. Рязанцев, П.А. Игнашов</copyright-holder><copyright-holder xml:lang="ru">П.А. Рязанцев, П.А. Игнашов</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2025-10-01"/></permissions><self-uri xlink:href="https://journals.eco-vector.com/2949-1789/article/view/660688">https://journals.eco-vector.com/2949-1789/article/view/660688</self-uri><abstract xml:lang="en"><p id="idm45257551392656">The post-glacial development of the Lake Onega coast, together with modern processes, creates conditions for the formation of complex coastal ecosystems that may be vulnerable to possible climate change and anthropogenic impacts. Such systems include wetlands extending along the eastern and southern coasts of Lake Onega. The area of a special interest is near the mouth of the Andoma River, as it combines the influence of the riverbed processes of a large river, the dynamics of the coast of Lake Onega, and peat lands development. The aim of the research was a detailed study of the structure of the Holocene deposits in the lake-river interval on the northern bank of the Andoma River, which reflects the stages of formation and variability of the natural conditions of the lakeside lowland. A reference transects including 4,800 m long GPR profile, supplemented with boreholes was created. The complex study of GPR cross-section and peat cores revealed the internal structure of the peat bog. A plateau-like uplift of the mineral base of the bog, framed by rupture zones with accompanying watercourses, was found. This area is considered as a deformation formed because of glacial dislocations or because of neotectonic deformations. Besides the main structural elements, local erosion incisions accompanied by sandy deposits, which could be confined to the buried paleochannels of the Andoma River, were found at the top of the limno-alluvial sediments. Analysis of the complex transect together with a vegetation description showed a difference in biological and environmental conditions zones, which contribute to biological diversity of the study site. In the future, the reference transects development provides a basis for the initial identification of vulnerabilities and long-term monitoring of the ecological transformation of ecosystems.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45257551387568">Постледниковая история развития побережья Онежского озера в совокупности с современными процессами создает условия для формирования сложных прибрежных экосистем, которые могут быть уязвимы из-за возможных климатических изменений и антропогенного влияния. К таким системам относятся водно-болотные угодья, протянувшиеся вдоль восточного и южного побережья Онежского озера. Научный интерес представляет территория в районе устья р. Андомы, так как здесь сочетается влияние русловых процессов крупной реки, динамика побережья Онежского озера, а также развитие верховых торфяников. Целью исследований было детальное изучение структуры голоценовых отложений на северном берегу р. Андомы, которая отражает этапы формирования и изменчивость природных условий приозерной низменности. Для этого была проложена опорная трансекта, включающая профиль георадиолокационных наблюдений протяженностью 4800 м, дополненный скважинами. На основе данных георадиолокации в сочетании с исследованием торфа по скважинам получен комплексный разрез, характеризующий внутреннее строение торфяника. Вдоль профиля обнаружены аккумулятивные структуры, такие как погребенные береговые валы и палеодюна. Также установлено платоподобное поднятие коренного ложа болота, обрамленное локальными понижениями. Подобную структуру можно рассматривать как деформацию, связанную с гляциодислокациями или неотектоническим воздействием. Кроме основных структурных элементов найдены локальные эрозионные врезы в кровле лимноаллювия, сопровождающиеся песчаными отложениями, которые могут быть приурочены к погребенным палеоруслам р. Андомы. Анализ комплексной трансекты в совокупности с описанием растительности показал существование зон, отличающихся по биолого-экологическим условиям, которые способствуют биологическому разнообразию в районе работ. В перспективе создание подобных опорных трансектов обеспечивает базу для первичного выявления уязвимостей и долгосрочного мониторинга экологической трансформации экосистем.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Lake Onega</kwd><kwd>Andoma River</kwd><kwd>GPR patterns</kwd><kwd>peatlands</kwd><kwd>biodiversity</kwd><kwd>ecological gradient</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Онежское озеро</kwd><kwd>река Андома</kwd><kwd>георадарные образы</kwd><kwd>торфяник</kwd><kwd>биоразнообразие</kwd><kwd>экологический градиент</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The authors thank E.L. Talbonen for the botanical analysis of peat. 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