Changes in habitat conditions in a Late Glacial fluviogenic lake in response to climatic fluctuations (Warta River valley, central Poland)

• Published in: Geological Quarterly
• Main Authors: Forysiak, Jacek, Okupny, Daniel, Obremska, Milena, Antczak-Orlewska, Olga, Płóciennik, Mateusz, Pawłowski, Dominik, Baradyn, Daria, Kotrys, Bartosz, Luoto, Tomi P., Nevalainen, Liisa, Borówka, Ryszard K.
• Other Authors: Uniwersytet Łódzki, Wydział Nauk Geograficznych, Katedra Geologii i Geomorfologii, Uniwersytet Łódzki, Wydział Biologii i Ochrony Środowiska, Instytut Ekologii i Ochrony Środowiska, Katedra Zoologii Bezkręgowców i Hydrobiologii, Uniwersytet Łódzki, Wydział Biologii i Ochrony Środowiska, [e-mail], [e-mail]
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2023
• Subjects: multi-proxy analysis; Late Weichselian; denudation processes; palaeoclimate; central European river; Bow Lake; Sion; Tive; Ice Sheet
• Online Access: http://hdl.handle.net/11089/47247; https://doi.org/10.7306/gq.1672

The Warta River val ley was greatly in flu enced by the ice sheet of the Last Gla cial Max i mum (LGM). A small peatland lo catedin the Warta drain age sys tem is here used as a palaeoarchive of cli ma tic and hab i tat changes dur ing the Late Gla cial(Weichselian). The £ugi sed i ment pro file was in ves ti gated us ing multi-proxy (pol len, Chironomidae, Cladocera and geo -chem is try) anal y ses that re corded changes in a fluviogenic sed i men tary de pres sion. Af ter the Poznañ Phase (LGM), £ugifunc tioned as an ox bow lake that was cut off from the ac tive river chan nel as a re sult of flu vial ero sion. Since that time, theWarta River has flowed only along the sec tion now oc cu pied by the Jeziorsko Res er voir. Sed i men ta tion of lac us trine de pos -its started at the be gin ning of the Late Gla cial. Sum mer tem per a ture re con struc tions in di cate cool Old est and Youn gerDryas, but no clear cool ing in the Older Dryas. Dur ing the Youn ger Dryas the palaeolake was com pletely oc cu pied by apeatland (fen), which pe ri od i cally dried out dur ing the Ho lo cene. In ves ti ga tion of this site has tracked the re ac tion of the hab i -tat to cli ma tic, hy dro log i cal and geomorphological changes through out the Late Weichselian.