globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2015.08.001
论文题名:
Ecological and biogeochemical change in an early Paleogene peat-forming environment: Linking biomarkers and palynology
作者: Inglis G.N.; Collinson M.E.; Riegel W.; Wilde V.; Robson B.E.; Lenz O.K.; Pancost R.D.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 438
起始页码: 245
结束页码: 255
语种: 英语
英文关键词: Bryophyte ; Eocene ; Paleocene ; Sphagnum bog
英文摘要: Sphagnum moss is the dominant plant type in modern boreal and (sub)arctic ombrotrophic bogs and is of particular interest due to its sensitivity to climate and its important role in wetland biogeochemistry. Here we reconstruct the occurrence of Sphagnum moss - and associated biogeochemical change - within a thermally immature, early Paleogene (~55Ma) lignite from Schöningen, NW Germany using a high-resolution, multi-proxy approach. Changes in the abundance of Sphagnum-type spores and the C23/C31 n-alkane ratio indicate the expansion of Sphagnum moss within the top of the lignite seam. This Sphagnum moss expansion is associated with the development of waterlogged conditions, analogous to what has been observed within modern ombrotrophic bogs. The similarity between biomarkers and palynology also indicates that the C23/C31 n-alkane ratio may be a reliable chemotaxonomic indicator for Sphagnum during the early Paleogene. The δ13C value of bacterial hopanes and mid-chain n-alkanes indicates that a rise in water table is not associated with a substantial increase in aerobic methanotrophy. The absence of very low δ13C values within the top of the seam could reflect either less methanogenesis or less efficient methane oxidation under waterlogged sulphate-rich conditions. © 2015 The Authors.
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被引频次[WOS]:31   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68797
Appears in Collections:过去全球变化的重建

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作者单位: Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock's Close, Bristol, United Kingdom; Cabot Institute, University of Bristol, Bristol, United Kingdom; Department of Earth Sciences, Royal Holloway University of London, Egham, Surrey, United Kingdom; Geowissenschaftliches Zentrum Göttingen, Geobiologie, Goldschmidtstrasse 3, Göttingen, Germany; Senckenberg Forschungsinstitut und Naturmuseum, Senckenberganlage 25, Frankfurt am Main, Germany; TU Darmstadt, Institut für Angewandte Geowissenschaften, Angewandte Sedimentgeologie, Schnittspahnstrasse 9, Germany

Recommended Citation:
Inglis G.N.,Collinson M.E.,Riegel W.,et al. Ecological and biogeochemical change in an early Paleogene peat-forming environment: Linking biomarkers and palynology[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,438
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