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Wyszukujesz frazę "Late Weichselian" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Multi-proxy inferred hydroclimatic conditions at Bęczkowice fen (central Poland); the influence of fluvial processes and human activity in the stone age
Autorzy:
Płóciennik, Mateusz
Jakiel, Aleksandra
Forysiak, Jacek
Kittel, Piotr
Płaza, Dominik K.
Okupny, Daniel
Pawłowski, Dominik
Obremska, Milena
Brooks, Stephen J.
Kotrys, Bartosz
Luoto, Tomi P.
Powiązania:
https://bibliotekanauki.pl/articles/2037005.pdf
Data publikacji:
2021-12-23
Wydawca:
Łódzkie Towarzystwo Naukowe
Tematy:
peatland
palaeoecology
climate changes
Late Weichselian
Early Holocene
central Poland
Opis:
Fens have been forming in the river valleys of central Poland since the Bølling and went through a transformation from fully aquatic to semiterrestrial habitats during the Younger Dryas/Holocene transition. This drove plant and invertebrate communities and left a distinct pattern in chemical sediment composition, which is why river valley peatlands are sensitive palaeo-archives of climatic, hydrological and edaphic changes. Here we reconstruct the Late Weichselian history of the Bęczkowice fen in the upper Luciąża River valley using geochemical, pollen, Cladocera and Chironomidae proxies. Pollen-based age estimation indicates that the analysed peat sequence dates from the Bølling to Early Holocene. The layers 190-170 cm and 125-105 cm of the studied core were reworked by fluvial processes. Chironomidae and Cladocera communities indicate mostly limnetic conditions during the Allerød and early Younger Dryas. Peatland pools were supplied mostly by Luciąża River floods, but also by groundwater. Since the onset of the Holocene, the water level has dropped, eliminating aquatic midges and water fleas, and supporting taxa typical of astatic waters and wet soil.
Źródło:
Acta Geographica Lodziensia; 2021, 111; 135-157
0065-1249
Pojawia się w:
Acta Geographica Lodziensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in habitat conditions in a Late Glacial fluviogenic lake in response to climatic fluctuations (Warta River valley, central Poland)
Autorzy:
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.
Powiązania:
https://bibliotekanauki.pl/articles/13955341.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
multi-proxy analysis
Late Weichselian
denudation processes
palaeoclimate
central European river
Opis:
The Warta River valley was greatly influenced by the ice sheet of the Last Glacial Maximum (LGM). A small peatland located in the Warta drainage system is here used as a palaeoarchive of climatic and habitat changes during the Late Glacial (Weichselian). The Ługi sediment profile was investigated using multi-proxy (pollen, Chironomidae, Cladocera and geochemistry) analyses that recorded changes in a fluviogenic sedimentary depression. After the Poznań Phase (LGM), Ługi functioned as an oxbow lake that was cut off from the active river channel as a result of fluvial erosion. Since that time, the Warta River has flowed only along the section now occupied by the Jeziorsko Reservoir. Sedimentation of lacustrine deposits started at the beginning of the Late Glacial. Summer temperature reconstructions indicate cool Oldest and Younger Dryas, but no clear cooling in the Older Dryas. During the Younger Dryas the palaeolake was completely occupied by a peatland (fen), which periodically dried out during the Holocene. Investigation of this site has tracked the reaction of the habitat to climatic, hydrological and geomorphological changes throughout the Late Weichselian.
Źródło:
Geological Quarterly; 2023, 67, 1; art. no. 1
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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