WARUNKI PALEOEKOLOGICZNE SUBKOPALNEGO KORYTA KOLONIA BECHCICE NA TLE HYDROLOGII SRODKOWEGO ODCINKA DOLINY NERU/Palaeoecological and palaeohydrological patterns of the Kolonia Bechcice subfossil oxbow in the mid-Ner River valley

• Published in: Acta geographica Lodziensia no. 105; p. 107
• Main Authors: Pl[white square]ciennik, Mateusz, Kittel, Piotr, Bor[white square]wka, Ryszard K, Cywa, Katarzyna, Okupny, Daniel, Obremska, Milena, Pawlowski, Dominik, Stachowicz-Rybka, Renata, Szperna, Rafal, Witkowski, Andrzej
• Format: Journal Article
• Language: English
• Published: Lódz Lódzkie Towarzystwo Naukowe 01.01.2016
• ISSN: 0065-1249; 2451-0319

The history of the Ner River valley is well documented in Kolonia Bechcice (NKB) palaeochannel sediments. It was cut-off from the riverbed in the Younger Dryas. Its history may be divided into five distinct phases. During the Younger Dryas, the NKB was a relatively deep, oligotrophic water body. From the onset of the Holocene, the lake became a eutrophic, overgrown pond which quickly palludified and transformed into a rich fen with ferns and birches. There is a hiatus in the middle of the Holocene fen stratigraphy. A peat sequence is covered by fluvial silt and sand deposits. The NKB sequence documents the Ner valley as a dynamic system during the Late Glacial and the Holocene. Local ecosystems of this oxbow have remained under a much stronger pressure of climate changes than palaeolakes and wetlands located on uplands in the Lódz region.