Postglacial history of vegetation, human activity and lake-level changes at Jezioro Linwek in northeast Poland, based on multi-proxy data

作者：Gaka Mariusz^*; Tobolski Kazimierz; Zawisza Edyta; Goslar Tomasz

来源：Vegetation History and Archaeobotany, 2014, 23(2): 123-152.

DOI：10.1007/s00334-013-0401-7

• Macrofossils
• Pollen
• Cladocera
• NE Poland
• Lake level changes
• Human activity

We present the postglacial history of vegetation, human activities and changes in lake level in the context of climate change in northeast Poland from similar to 14,000 cal. b.p. to the present day. The palaeoecological reconstruction is based on the results of high-resolution plant macrofossil analyses as well as records from pollen, Cladocera and radiocarbon dating. Climate fluctuations and human activity have caused many changes in vegetation development in Jezioro Linwek and in the vicinity of this lake. The Early Holocene warming that occurred at similar to 9500 b.c. caused an increase in Betula and the colonisation of Linwek by Potamogeton lucens, Nymphaea alba and Chara sp. At similar to 2300 b.c., climate cooling was accompanied by the spread of Picea abies and the appearance of Potamogeton alpinus and Nuphar pumila in the lake. The first traces of farming in the form of Cerealia pollen have been dated back to similar to 2100 b.c. The cultivation of Triticum began at similar to 250 b.c., Secale at similar to a.d. 550, and Fagopyrum at similar to a.d. 1720. The rapid increase in human activity at similar to a.d. 1700 and the simultaneous loss of woodland is associated with the establishment of villages in the area and is expressed by the decline of tree curves. In Linwek, which was formed similar to 14,000 cal. b.p., three periods of high water level occurred (12000-9400, 7000-4000 and 1450 b.c.-a.d. 650), and two periods of low water level (9400-7100 and 3700-1700 b.c.). The changes of water level correspond well with other sites in central and northern Europe.

• 出版日期2014-3