DOI: 10.1016/j.palaeo.2016.08.002
论文题名: Periodic lake-peatland shifts under the Eemian and Early Weichselian climate changes in Central Europe on the basis of multi-proxy studies
作者: Kołaczek P. ; Niska M. ; Mirosław-Grabowska J. ; Gałka M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 461 起始页码: 29
结束页码: 43
语种: 英语
英文关键词: Cladocera
; MIS-5
; Non-pollen palynomorphs
; Organic matter
; Plant macrofossils
; Poland
英文摘要: Long-term palaeoecological sequences dated to the Eemian interglacial and Weichselian glaciation are crucial for understanding cyclic climate changes and ecosystem responses. This article presents a multi-proxy (palaeobotanical, zoological and geochemical) study considering variable aspects of the Eemian-Early Weichselian lake-mire succession in central Poland. The investigated sequence, collected from a former small kettle-hole, revealed many ecosystem alterations, i.e. warm stages led to the terrestrialisation of the lake, whereas stadial coolings to its reappearance. Hence, we examined whether: (i) the Eemian warming influenced the ecological succession of the lake, (ii) lakes which reappeared during the Herning and Rederstall stadial coolings developed alike and (iii) the beginning of peatland functioning (interglacial or interstadial) had an impact on further plant succession. The results show that thermal amelioration during the Eemian interglacial supported domination of Tetraedron minimum and Pediastrum boryanum var. boryanum, which contributed to the sedimentation of bituminous shales. The expansion of Salvinia natans in the final stage of lake existence (Middle Eemian) was probably a result of the mild climate characterised by the lack of late spring frosts. Algae, in contrast to Cladocera, revealed bipartition of the Herning and Rederstall stadials (older sections were colder, younger warmer). However, geochemical and isotopic data point to the very low productivity of the lakes during those stadials. The lake that existed during the Herning stadial revealed very low taxonomical diversity of Cladocera, whereas that during the Rederstall was characterised by relatively high diversity of this group. During the Late Eemian and Brørup interstadial, rich fens with some oligotrophic patches with Sphagnum sp. developed. This study revealed that small water bodies, due to their very local character and often uniqueness of palaeo-records, may be a very valuable source of information about climate and palaeoecology of different groups of organisms during the Eemian interglacial and the Weichselian glaciation. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68223
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Biogeography and Palaeoecology, Faculty of Geographical and Geological Sciences, Adam Mickiewicz University in Poznań, Dzięgielowa 27, Poznań, Poland; Institute of Geography and Regional Studies, Pomeranian University in Słupsk, Partyzantów 27, Słupsk, Poland; Institute of Geological Sciences, Polish Academy of Sciences INGPAN, Research Centre in Warsaw, Twarda 51/55, Warsaw, Poland
Recommended Citation:
Kołaczek P.,Niska M.,Mirosław-Grabowska J.,et al. Periodic lake-peatland shifts under the Eemian and Early Weichselian climate changes in Central Europe on the basis of multi-proxy studies[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,461