Arid
DOI10.1007/s10933-008-9273-8
Diatoms reveal complex spatial and temporal patterns of recent limnological change in West Greenland
Perren, Bianca B.1; Douglas, Marianne S. V.1; Anderson, N. John2
通讯作者Perren, Bianca B.
来源期刊JOURNAL OF PALEOLIMNOLOGY
ISSN0921-2728
出版年2009
卷号42期号:2页码:233-247
英文摘要

Diatoms in sediment cores were analysed across a range of stratigraphic resolutions along a transect of 23 lakes spanning the ice-free margin of the west coast of Greenland (similar to 67A degrees N), to explore spatial and temporal patterns of recent (last similar to 150 years) environmental change in the region. These records display heterogeneous lake development trajectories over the last several centuries. Estimates of species composition turnover (beta-diversity) since 1850 AD are among the lowest for lakes in the Arctic, and are comparable to "unimpacted" reference lakes from temperate regions. Most of the change that occurred in West Greenland lakes pre-dates potential industrial anthropogenic effects, while post-1850 change is well within the natural range of variability for these systems. Nonetheless, a spatial pattern in core "top-bottom" changes is apparent across the transect: lakes in the arid interior of the region, adjacent to the ice sheet, and those with higher pH, register greater change than those in the more maritime climate of the coast. This suggests that climate plays an indirect role in the recent development of these lakes, and that recent anthropogenic forcing has not yet exceeded major ecological thresholds in this region.


英文关键词Diatoms West Greenland Arctic lakes Climate change Beta diversity
类型Article
语种英语
国家Canada ; England
收录类别SCI-E
WOS记录号WOS:000267825100006
WOS关键词RECENT ENVIRONMENTAL-CHANGES ; NORTH-ATLANTIC OSCILLATION ; REMOTE MOUNTAIN LAKES ; WATER-QUALITY CHANGES ; ARCTIC LAKES ; CLIMATE-CHANGE ; SOUTHERN GREENLAND ; HOLOCENE CLIMATE ; EAST GREENLAND ; ICE-SHEET
WOS类目Environmental Sciences ; Geosciences, Multidisciplinary ; Limnology
WOS研究方向Environmental Sciences & Ecology ; Geology ; Marine & Freshwater Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/161721
作者单位1.Univ Toronto, Dept Geol, Toronto, ON M5S 3B1, Canada;
2.Univ Loughborough, Dept Geog, Loughborough LE11 3TU, Leics, England
推荐引用方式
GB/T 7714
Perren, Bianca B.,Douglas, Marianne S. V.,Anderson, N. John. Diatoms reveal complex spatial and temporal patterns of recent limnological change in West Greenland[J],2009,42(2):233-247.
APA Perren, Bianca B.,Douglas, Marianne S. V.,&Anderson, N. John.(2009).Diatoms reveal complex spatial and temporal patterns of recent limnological change in West Greenland.JOURNAL OF PALEOLIMNOLOGY,42(2),233-247.
MLA Perren, Bianca B.,et al."Diatoms reveal complex spatial and temporal patterns of recent limnological change in West Greenland".JOURNAL OF PALEOLIMNOLOGY 42.2(2009):233-247.
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