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An 11400 year paleoecological history of a British chalk grassland
Author(s) -
Bush M. B.
Publication year - 1993
Publication title -
journal of vegetation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 115
eISSN - 1654-1103
pISSN - 1100-9233
DOI - 10.2307/3235733
Subject(s) - younger dryas , ecology , stadial , allerød oscillation , grassland , pollen , pleistocene , arboreal locomotion , glacial period , geography , geology , habitat , archaeology , paleontology , biology , climate change
The first broad‐based, paleoecological analysis of a sedimentary sequence on the British chalk, dating to the terminal Pleistocene, reveals a history of climatic, vegetational and faunal change. The past co‐occurrence of currently allopatric species among molluscs, beetles and plants supports hypotheses of the impermanence of communities. Modern pollen rain data are utilized to refine the ecological interpretation of the fossil pollen data. The presence of the Windermere Interstadial (Allerod) and the Loch Lomond re‐advance (Younger Dryas) are represented by decreased abundances of arboreal taxa and increased representation of cold grassland elements. Open grassland habitats appear to have been a continuous landscape element, at least locally, since the late‐glacial period on the northern British chal Mands, although their species composition has changed greatly in the last 11400 yr.