geomorfГеоморфология и палеогеографияGeomorfologiya i Paleogeografiya2949-17892949-1797geomorf-3727Research ArticleПалеогеография плейстоцена и голоценаДинамика экосистемы островного озера Куйккалампи во время регрессии Ладожского озера в позднем голоценеСапелкоТ. В.tsapelko@mail.ruГазизоваТ. Ю.МазейН. Г.ЦыгановА. Н.ПастуховаЮ. А.КомаровА. А.КорнеенковаН. Ю.МазейЮ. А.Институт озероведения РАН – СПб ФИЦ РАН, Санкт-ПетербургРоссияМосковский государственный университет имени М. В. Ломоносова, географический факультет, МоскваРоссияМосковский государственный университет имени М. В. Ломоносова, биологический факультет, МоскваРоссияПензенский государственный университет, ПензаРоссия202603072026571195213Copyright © Сапелко Т.В., Газизова Т.Ю., Мазей Н.Г., Цыганов А.Н., Пастухова Ю.А., Комаров А.А., Корнеенкова Н.Ю., Мазей Ю.А., 20262026Сапелко Т.В., Газизова Т.Ю., Мазей Н.Г., Цыганов А.Н., Пастухова Ю.А., Комаров А.А., Корнеенкова Н.Ю., Мазей Ю.А.Сапелко Т.В., Газизова Т.Ю., Мазей Н.Г., Цыганов А.Н., Пастухова Ю.А., Комаров А.А., Корнеенкова Н.Ю., Мазей Ю.А.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://geomorphology.igras.ru/jour/article/view/3727

Формирование оз. Куйккалампи, расположенного на о-ве Лункулансаари в СВ части Ладожского озера, связано с началом регрессии озера в позднем голоцене после завершения Ладожской трансгрессии. Изучение донных отложений озера путем анализа спорово-пыльцевых спектров, растительных макроостатков, раковинных амеб и кладоцер позволило реконструировать динамику наземной растительности и этапы формирования и зарастания озера. Изоляция оз. Куйккалампи (17 м над у. м.) в связи с понижением уровня Ладоги произошла ~3200 кал. л. н. После стадии зарастания водоема на рубеже ~2200 кал. л. н. начала формироваться прибрежная сплавина, в последние ~700 лет отмечается усиление эвтрофирования озера. Результаты кладоцерного и ризоподного анализов подтвердили возможность использования пыльцы макрофитов для индикации изменений уровня озер.

изоляция озерзарастание озермакрофитыпыльцаботанический составкладоцерыраковинные амебыИсследование выполнено в рамках темы Государственного задания ИНОЗ РАН – СПб ФИЦ РАН № FFZF-2024-0001 и при поддержке гранта Российского научного фонда № 24-14-00065 (ризоподный и кладоцерный анализы)ReferencesAleksandrovskij A.L., Arslanov H.A., Davydova N.N., Doluhanov P.M., Zajceva G.I., Kirpichnikov A.N., Kuznecov D.D., Lavento M., Ludikova A.V., Nosov E.N., Savel'eva L.A., Sapelko T.V., Subetto D.A. (2009) Novye dannye otnositel'no transgressii Ladozhskogo ozera, obrazovanija reki Nevy i zemledel'cheskogo osvoenija Severo-Zapada Rossii // Doklady RAN. T. 424. № 5. P. 682–687.Aleksandrovskij A.L., Arslanov H.A., Davydova N.N., Doluhanov P.M., Zajceva G.I., Kirpichnikov A.N., Kuznecov D.D., Lavento M., Ludikova A.V., Nosov E.N., Savel'eva L.A., Sapelko T.V., Subetto D.A. (2009) Novye dannye otnositel'no transgressii Ladozhskogo ozera, obrazovanija reki Nevy i zemledel'cheskogo osvoenija Severo-Zapada Rossii // Doklady RAN. T. 424. № 5. P. 682–687.Amantov A.V. (2014) Geologija dochetvertichnyh obrazovanij i tektonika Ladozhskogo ozera // Regional'naja geologija i metallogenija. № 58. P. 22–32.Amantov A.V. (2014) Geologija dochetvertichnyh obrazovanij i tektonika Ladozhskogo ozera // Regional'naja geologija i metallogenija. № 58. P. 22–32.Bobrov A.E., Kuprijanova L.A., Litvinceva M.V., Tarasevich V.F. (1983) Spory paporotnikoobraznyh i pyl'ca golosemennyh i odnodol'nyh rastenij flory evropejskoj chasti SSSR. L.: Nauka. 208 p.Bobrov A.E., Kuprijanova L.A., Litvinceva M.V., Tarasevich V.F. (1983) Spory paporotnikoobraznyh i pyl'ca golosemennyh i odnodol'nyh rastenij flory evropejskoj chasti SSSR. L.: Nauka. 208 p.Gazizova T.Ju., Sapelko T.V. (2020) Obosnovanie znachenija pyl'cy makrofitov dlja paleolimnologicheskih rekonstrukcij na primere ozer o. Lunkulansaari na severo-vostoke Ladozhskogo ozera // Biosfera. № 4. ) P. 21–30.Gazizova T.Ju., Sapelko T.V. (2020) Obosnovanie znachenija pyl'cy makrofitov dlja paleolimnologicheskih rekonstrukcij na primere ozer o. Lunkulansaari na severo-vostoke Ladozhskogo ozera // Biosfera. № 4. ) P. 21–30.Grichuk V.P. (1940) Metodika obrabotki osadochnyh porod, bednyh organicheskimi ostatkami, dlja celej pyl'cevogo analiza // Problemy fizicheskoj geografii. Vyp. 8. P. 53–58.Grichuk V.P. (1940) Metodika obrabotki osadochnyh porod, bednyh organicheskimi ostatkami, dlja celej pyl'cevogo analiza // Problemy fizicheskoj geografii. Vyp. 8. P. 53–58.Dombrovskaja F.V. Koreneva M.M., Tjuremnov S.N. (1959) Atlas rastitel'nyh ostatkov, vstrechaemyh v torfe. M.-L.: Gosjenergoizdat. 90 p.Dombrovskaja F.V. Koreneva M.M., Tjuremnov S.N. (1959) Atlas rastitel'nyh ostatkov, vstrechaemyh v torfe. M.-L.: Gosjenergoizdat. 90 p.Elina G.A., Jurkovskaja T.G. (1992) Metody opredelenija paleogidrologicheskogo rezhima kak osnova ob#ektivizacii prichin sukcessij rastitel'nosti bolot // Botanicheskij zhurnal. T. 77. № 7. P. 120–123.Elina G.A., Jurkovskaja T.G. (1992) Metody opredelenija paleogidrologicheskogo rezhima kak osnova ob#ektivizacii prichin sukcessij rastitel'nosti bolot // Botanicheskij zhurnal. T. 77. № 7. P. 120–123.Kac N.Ja., Kac S.V., Skobeeva E.I. (1977) Atlas rastitel'nyh ostatkov v torfah. M.: Nedra. 376 p.Kac N.Ja., Kac S.V., Skobeeva E.I. (1977) Atlas rastitel'nyh ostatkov v torfah. M.: Nedra. 376 p.Koshechkin B. I. (1990) Geomorphology of the coastal zone of Lake Ladoga // History of Ladoga, Onega, Pskov-Chudskoe, Baikal and Khanka / Ed. D. D. Kvasov. L. P. 22-26.Koshechkin B. I. (1990) Geomorphology of the coastal zone of Lake Ladoga // History of Ladoga, Onega, Pskov-Chudskoe, Baikal and Khanka / Ed. D. D. Kvasov. L. P. 22-26.Kuprijanova L.A., Aleshina L.A. (1972) Pyl'ca i spory rastenij flory evropejskoj chasti SSSR. L.: Nauka. T. 1. 171 p.Kuprijanova L.A., Aleshina L.A. (1972) Pyl'ca i spory rastenij flory evropejskoj chasti SSSR. L.: Nauka. T. 1. 171 p.Kuprijanova L.A., Aleshina L.A. (1978) Pyl'ca dvudol'nyh rastenij flory evropejskoj chasti SSSR. Lamiaceae – Zygophyllaceae. L.: Nauka. 184 p.Kuprijanova L.A., Aleshina L.A. (1978) Pyl'ca dvudol'nyh rastenij flory evropejskoj chasti SSSR. Lamiaceae – Zygophyllaceae. L.: Nauka. 184 p.Korovchinskij N.M., Kotov A.A., Bojkova O.S., Smirnov N.N. (2021) Vetvistousye rakoobraznye (Crustacea: Cladocera) Severnoj Evrazii. T.I. M.: Tovarishhestvo nauchnyh izdanij KMK. 481 p.Korovchinskij N.M., Kotov A.A., Bojkova O.S., Smirnov N.N. (2021) Vetvistousye rakoobraznye (Crustacea: Cladocera) Severnoj Evrazii. T.I. M.: Tovarishhestvo nauchnyh izdanij KMK. 481 p.Lijva A.A., Sarv A.A., Jekman I.M. (1971) K istorii poslelednikovogo (golocenovogo) razvitija Ladogi po dannym novyh issledovanij v severo-vostochnom Priladozh'e // Priroda, beregovye obrazovanija i istorija razvitija vnutrennih vodoemov i morej Vostochnoj Pribaltiki i Karelii. Petrozavodsk. P. 23–26.Lijva A.A., Sarv A.A., Jekman I.M. (1971) K istorii poslelednikovogo (golocenovogo) razvitija Ladogi po dannym novyh issledovanij v severo-vostochnom Priladozh'e // Priroda, beregovye obrazovanija i istorija razvitija vnutrennih vodoemov i morej Vostochnoj Pribaltiki i Karelii. Petrozavodsk. P. 23–26.Mazej Ju.A., Cyganov A.N. (2006) Presnovodnye rakovinnye ameby. M.: Tovarishhestvo nauchnyh izdanij KMK. 300 p.Mazej Ju.A., Cyganov A.N. (2006) Presnovodnye rakovinnye ameby. M.: Tovarishhestvo nauchnyh izdanij KMK. 300 p.Sapelko T.V., Kuznecov D.D., Korneenkova N.Ju. i dr. (2014) Paleolimnologija vnutrennih ozer ostrova Putsaari (Ladozhskoe ozero) // Izvestija RGO. T. 146. Vyp. 3. S. 29–40.Sapelko T.V., Kuznecov D.D., Korneenkova N.Ju. i dr. (2014) Paleolimnologija vnutrennih ozer ostrova Putsaari (Ladozhskoe ozero) // Izvestija RGO. T. 146. Vyp. 3. S. 29–40.Sapelko T.V., Korneenkova N.Ju. (2017) Rekonstrukcija istorii ostrovnyh ozer po dannym palinologicheskogo i botanicheskogo analizov // Aktual'nye problemy sovremennoj palinologii /Mat-ly XIV Vseros. palinologicheskoj konf. M.: Geograficheskij fakul'tet MGU. P. 311–315.Sapelko T.V., Korneenkova N.Ju. (2017) Rekonstrukcija istorii ostrovnyh ozer po dannym palinologicheskogo i botanicheskogo analizov // Aktual'nye problemy sovremennoj palinologii /Mat-ly XIV Vseros. palinologicheskoj konf. M.: Geograficheskij fakul'tet MGU. P. 311–315.Sapelko T.V., Terehov A.V., Amantov A.V. (2018) Ladozhskaja transgressija: rekonstrukcija final'noj stadii i posledujushhego spada v severnoj chasti ozera // Regional'naja geologija i metallogenija. № 75. P. 23–34.Sapelko T.V., Terehov A.V., Amantov A.V. (2018) Ladozhskaja transgressija: rekonstrukcija final'noj stadii i posledujushhego spada v severnoj chasti ozera // Regional'naja geologija i metallogenija. № 75. P. 23–34.Sapelko T.V., Gusentsova T.M., Kulkova M.A. et al. (2019) Ladoga transgression and landscapes of the Holocene second half in the Southern Ladoga area (according to the study of the archaeological site Podolje-1) // Izvestiya Rossiiskoi akademii nauk. Seriya geograficheskaya. N. 5. P. 78-95. doi:10.31857/S2587-55662019578-95Sapelko T.V., Gusentsova T.M., Kulkova M.A. et al. (2019) Ladoga transgression and landscapes of the Holocene second half in the Southern Ladoga area (according to the study of the archaeological site Podolje-1) // Izvestiya Rossiiskoi akademii nauk. Seriya geograficheskaya. N. 5. P. 78-95. doi:10.31857/S2587-55662019578-95Sapelko T.V., Gazizova T.Ju., Moiseenko A.D. i dr. (2023) Osobennosti processa izoljacii ozera Vital'evskogo (ostrov Valaam) i dinamika rastitel'nosti v svjazi s izmeneniem urovnja Ladozhskogo ozera v pozdnem golocene // Geomorfologija i paleogeografija. T. 54. № 4. P. 72–89. https://doi.org/10.31857/S2949178923040126Sapelko T.V., Gazizova T.Ju., Moiseenko A.D. i dr. (2023) Osobennosti processa izoljacii ozera Vital'evskogo (ostrov Valaam) i dinamika rastitel'nosti v svjazi s izmeneniem urovnja Ladozhskogo ozera v pozdnem golocene // Geomorfologija i paleogeografija. T. 54. № 4. P. 72–89. https://doi.org/10.31857/S2949178923040126Smirnov N.N. (2010) Istoricheskaja jekologija presnovodnyh zoocenozov. M.: Tovarishhestvo nauchnyh izdanij KMK. 225 s.Smirnov N.N. (2010) Istoricheskaja jekologija presnovodnyh zoocenozov. M.: Tovarishhestvo nauchnyh izdanij KMK. 225 s.Stepanova A.B., Vojakina E.Ju., Zueva N.V. i dr. (2021) Vodnaja sistema Valaamskogo arhipelaga. Malye lesnye ozera // Sovremennoe sostojanie i problemy antropogennoj transformacii jekosistemy Ladozhskogo ozera v uslovijah izmenjajushhegosja klimata. SPb.: INOZ RAN – SPb FIC RAN. P. 477–485.Stepanova A.B., Vojakina E.Ju., Zueva N.V. i dr. (2021) Vodnaja sistema Valaamskogo arhipelaga. Malye lesnye ozera // Sovremennoe sostojanie i problemy antropogennoj transformacii jekosistemy Ladozhskogo ozera v uslovijah izmenjajushhegosja klimata. SPb.: INOZ RAN – SPb FIC RAN. P. 477–485.Subetto D.A. (2009) Donnye otlozhenija ozjor: paleolimnologicheskie rekonstrukcii. SPb.: Izd. RGPU im. A.I. Gercena. 344 p.Subetto D.A. (2009) Donnye otlozhenija ozjor: paleolimnologicheskie rekonstrukcii. SPb.: Izd. RGPU im. A.I. Gercena. 344 p.Tjuremnov S. N. (1976) Torfjanye mestorozhdenija. M.: Nedra. 488 p.Tjuremnov S. N. (1976) Torfjanye mestorozhdenija. M.: Nedra. 488 p.Ailio J. (1915) Die geographische Entwicklung des Ladogasees in Postglaziales Zeit und ihre Beziehung zur steinzeitlichen Besiedeledelung // Fennia. Vol. 38 (3). 157 pp.Ailio J. (1915) Die geographische Entwicklung des Ladogasees in Postglaziales Zeit und ihre Beziehung zur steinzeitlichen Besiedeledelung // Fennia. Vol. 38 (3). 157 pp.Bjerring R., Becares E., Declerck S. et al (2009) Subfossil Cladocera in relation to contemporary environmental variables in 54 Pan-European lakes // Freshwater Biology. Vol. 54. P. 2401–2417. https://doi.org/10.1111/j.1365-2427.2009.02252.xBjerring R., Becares E., Declerck S. et al (2009) Subfossil Cladocera in relation to contemporary environmental variables in 54 Pan-European lakes // Freshwater Biology. Vol. 54. P. 2401–2417. https://doi.org/10.1111/j.1365-2427.2009.02252.xBlaauw M. (2010) Methods and code for ‘classical’ age-modelling of radiocarbon sequences // Quaternary Geochronology. Vol. 5. P. 512–518. https://doi.org/10.1016/j.quageo.2010.01.002Blaauw M. (2010) Methods and code for ‘classical’ age-modelling of radiocarbon sequences // Quaternary Geochronology. Vol. 5. P. 512–518. https://doi.org/10.1016/j.quageo.2010.01.002Blaauw M., Christen J.A. (2011) Flexible paleoclimate age-depth models using an autoregressive gamma process // Bayesian Anal. Vol. 6. P. 457–474. https://doi.org/10.1214/11-BA618Blaauw M., Christen J.A. (2011) Flexible paleoclimate age-depth models using an autoregressive gamma process // Bayesian Anal. Vol. 6. P. 457–474. https://doi.org/10.1214/11-BA618Bledzki L.A., Rybak J.I. (2016) Freshwater Crustacean Zooplankton of Europe: Cladocera & Copepoda (Calanoida, Cyclopoida) Key to species identification, with notes on ecology, distribution, methods and introduction to data analysis. Springer. https://doi.org/10.1007/978-3-319-29871-9Bledzki L.A., Rybak J.I. (2016) Freshwater Crustacean Zooplankton of Europe: Cladocera & Copepoda (Calanoida, Cyclopoida) Key to species identification, with notes on ecology, distribution, methods and introduction to data analysis. Springer. https://doi.org/10.1007/978-3-319-29871-9Dolukhanov P.M., Subetto D.A., Arslanov Kh.A. et al. (2009) The Baltic Sea and Ladoga Lake transgressions and early human migrations in North-Western Russia // Quaternary International. Vol. 203. P. 33–51.Dolukhanov P.M., Subetto D.A., Arslanov Kh.A. et al. (2009) The Baltic Sea and Ladoga Lake transgressions and early human migrations in North-Western Russia // Quaternary International. Vol. 203. P. 33–51.Gannon J.E. (1971) Two Counting Cells for the Enumeration of Zooplankton Micro-Crustacea // Trans Am Microsc Soc. V. 90. 486 p. https://doi.org/10.2307/3225467Gannon J.E. (1971) Two Counting Cells for the Enumeration of Zooplankton Micro-Crustacea // Trans Am Microsc Soc. V. 90. 486 p. https://doi.org/10.2307/3225467Grimm E.C. (2004) TGView. Illinois State Museum, Research and Collections CenterGrimm E.C. (2004) TGView. Illinois State Museum, Research and Collections CenterHofmann W. (1998). Cladocerans and chironomids as indicators of lake level changes in north temperate lakes // Journal of Paleolimnology. Vol. 19. P. 55–62.Hofmann W. (1998). Cladocerans and chironomids as indicators of lake level changes in north temperate lakes // Journal of Paleolimnology. Vol. 19. P. 55–62.Juggins S. (2017) ‘rioja’: analysis of Quaternary science data, R package version (0.9-15.1).Juggins S. (2017) ‘rioja’: analysis of Quaternary science data, R package version (0.9-15.1).Mazei Yu.A., Tsyganov A.N., Bubnova O.A. (2007) Structure of a community of testate amoebae in a Sphagnum dominated bog in upper sura flow (Middle Volga Territory) // Biology Bulletin. Vol. 34. P. 382–394.Mazei Yu.A., Tsyganov A.N., Bubnova O.A. (2007) Structure of a community of testate amoebae in a Sphagnum dominated bog in upper sura flow (Middle Volga Territory) // Biology Bulletin. Vol. 34. P. 382–394.Mazei Yu., Tsyganov A., Bobrovsky M. et al. (2020) Peatland development, vegetation history, climate change and human activity in Valdai Uplands (Central European Russia) during the Holocene: A multi-proxy palaeoecological study // Diversity. Vol. 12. № 12. Art. № 46. https://doi.org/10.3390/d12120462Mazei Yu., Tsyganov A., Bobrovsky M. et al. (2020) Peatland development, vegetation history, climate change and human activity in Valdai Uplands (Central European Russia) during the Holocene: A multi-proxy palaeoecological study // Diversity. Vol. 12. № 12. Art. № 46. https://doi.org/10.3390/d12120462Miettinen J., Grönlund E., Simola H., Huttunen P. (2002) Palaeolimnology of Lake Pieni-Kuupalanlampi (Kurkijoki, Karelian Republic, Russia): isolation history, lake ecosystem development and long-term agricultural impact // Journal of Paleolimnology. Vol. 27. P. 29–44.Miettinen J., Grönlund E., Simola H., Huttunen P. (2002) Palaeolimnology of Lake Pieni-Kuupalanlampi (Kurkijoki, Karelian Republic, Russia): isolation history, lake ecosystem development and long-term agricultural impact // Journal of Paleolimnology. Vol. 27. P. 29–44.Nevalainen L., Sarmaja-Korjonen K., Luoto T. P. (2011) Sedimentary Cladocera as indicators of past water-level changes in shallow northern lakes // Quaternary Research. Vol. 75. №. 3. P. 430–437.Nevalainen L., Sarmaja-Korjonen K., Luoto T. P. (2011) Sedimentary Cladocera as indicators of past water-level changes in shallow northern lakes // Quaternary Research. Vol. 75. №. 3. P. 430–437.Pastukhova Yu.A., Tsyganov A.N., Sapelko T.V., Mazei N.G., Zharov A.A., Mazei Yu.A. (2024) Paleoecological reconstruction of water level changes in a cascade of the lakes on Lunkulansaari Island (Lake Ladoga) based on the results of the analysis of Cladocera remains in lake sediments // Limnology and Freshwater Biology. Vol. 4. P. 574–579. https://doi.org/10.31951/2658-3518-2024-A-4-574Pastukhova Yu.A., Tsyganov A.N., Sapelko T.V., Mazei N.G., Zharov A.A., Mazei Yu.A. (2024) Paleoecological reconstruction of water level changes in a cascade of the lakes on Lunkulansaari Island (Lake Ladoga) based on the results of the analysis of Cladocera remains in lake sediments // Limnology and Freshwater Biology. Vol. 4. P. 574–579. https://doi.org/10.31951/2658-3518-2024-A-4-574R Core Team (2023) R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, Vienna, AustriaR Core Team (2023) R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, Vienna, AustriaReimer P.J., Austin WEN, Bard E., et al. (2020) The IntCal20 Northern Hemisphere Radiocarbon Age Calibration Curve (0–55 cal kBP) // Radiocarbon. Vol. 62. P. 725–757. https://doi.org/10.1017/RDC.2020.41Reimer P.J., Austin WEN, Bard E., et al. (2020) The IntCal20 Northern Hemisphere Radiocarbon Age Calibration Curve (0–55 cal kBP) // Radiocarbon. Vol. 62. P. 725–757. https://doi.org/10.1017/RDC.2020.41Saarnisto M., Grönlund T. (1996) Shoreline displacement of Lake Ladoga – new data from Kilpolansaari // Hydrobiologia. Vol. 322. Iss. 1–3. P. 205–215.Saarnisto M., Grönlund T. (1996) Shoreline displacement of Lake Ladoga – new data from Kilpolansaari // Hydrobiologia. Vol. 322. Iss. 1–3. P. 205–215.Saarnisto M. (2012) Late Holocene land uplift/neotectonics on the island of Valamo (Valaam), Lake Ladoga, NW Russia // Quaternary International. Vol. 260. P. 143–152.Saarnisto M. (2012) Late Holocene land uplift/neotectonics on the island of Valamo (Valaam), Lake Ladoga, NW Russia // Quaternary International. Vol. 260. P. 143–152.Sapelko T., Kuznetsov D.D., Ludikova A.V. et al. (2020) The development of island lakes of Lake Ladoga during the Late Pleistocene Holocene // Limnology and Freshwater Biology. Vol. 4. Р. 470–471.Sapelko T., Kuznetsov D.D., Ludikova A.V. et al. (2020) The development of island lakes of Lake Ladoga during the Late Pleistocene Holocene // Limnology and Freshwater Biology. Vol. 4. Р. 470–471.Simpson G. L., Oksanen J. (2020) analogue: Analogue and weighted averaging methods for palaeoecology. R Package Version. 0.6–8.Simpson G. L., Oksanen J. (2020) analogue: Analogue and weighted averaging methods for palaeoecology. R Package Version. 0.6–8.Tsyganov A., Babeshko K., Mazei Y. (2016) A guide to testate amoebae with the keys to genera. Publishing house PGU, PenzaTsyganov A., Babeshko K., Mazei Y. (2016) A guide to testate amoebae with the keys to genera. Publishing house PGU, PenzaTsyganov A.N., Babeshko K.V., Novenko E.Yu., Malysheva E.A., Payne R., Mazei Yu. (2017) Quantitative reconstruction of peatland hydrological regime with fossil testate amoebae communities // Russian Journal of Ecology. Vol. 48. № 2. P. 191–198.Tsyganov A.N., Babeshko K.V., Novenko E.Yu., Malysheva E.A., Payne R., Mazei Yu. (2017) Quantitative reconstruction of peatland hydrological regime with fossil testate amoebae communities // Russian Journal of Ecology. Vol. 48. № 2. P. 191–198.Tsyganov A. N., Malysheva E. A., Zharov A. A., Sapelko T. V., Mazei Y. A. (2019). Distribution of benthic testate amoeba assemblages along a water depth gradient in freshwater lakes of the Meshchera Lowlands, Russia, and utility of the microfossils for inferring past lake water level // Journal of Paleolimnology. Vol. 62. P. 137–150.Tsyganov A. N., Malysheva E. A., Zharov A. A., Sapelko T. V., Mazei Y. A. (2019). Distribution of benthic testate amoeba assemblages along a water depth gradient in freshwater lakes of the Meshchera Lowlands, Russia, and utility of the microfossils for inferring past lake water level // Journal of Paleolimnology. Vol. 62. P. 137–150.Vuorela I., Lempiänen T., Saarnisto M. (2001) Land use pollen record from the Island of Valamo, Russian Karelia // Ann. Bot. Fenn. Vol. 38. P. 139–165.Vuorela I., Lempiänen T., Saarnisto M. (2001) Land use pollen record from the Island of Valamo, Russian Karelia // Ann. Bot. Fenn. Vol. 38. P. 139–165.Virtasalo J.J., Ryabchuk D., Kotilainena A.T., Zhamoida V., Grigoriev A., Sivkov V. & Dorokhova E. (2014) Middle Holocene to present sedimentary environment in the easternmost Gulfof Finland (Baltic Sea) and the birth of the Neva River // Marine Geology. Vol. 350. P. 84–96.Virtasalo J.J., Ryabchuk D., Kotilainena A.T., Zhamoida V., Grigoriev A., Sivkov V. & Dorokhova E. (2014) Middle Holocene to present sedimentary environment in the easternmost Gulfof Finland (Baltic Sea) and the birth of the Neva River // Marine Geology. Vol. 350. P. 84–96.Zharov A.A., Tchabovsky A.V., Neplyukhina A.A., Sysoev V.V., Kotov A.A. (2024) Changes in the composition of subfossil algae and invertebrate assemblages along the depth gradient in dimictic Lake Valdayskoye (Novgorod Area, Russia) // Journal of Paleolimnology. Vol. 72. P. 429–442.Zharov A.A., Tchabovsky A.V., Neplyukhina A.A., Sysoev V.V., Kotov A.A. (2024) Changes in the composition of subfossil algae and invertebrate assemblages along the depth gradient in dimictic Lake Valdayskoye (Novgorod Area, Russia) // Journal of Paleolimnology. Vol. 72. P. 429–442.

The authors declare that there are no conflicts of interest present.