globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12548
Scopus记录号: 2-s2.0-84953368336
论文题名:
Changes in the dominant assembly mechanism drive species loss caused by declining resources
作者: Thorn S.; Bässler C.; Bernhardt-Römermann M.; Cadotte M.; Heibl C.; Schäfer H.; Seibold S.; Müller J.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2016
卷: 19, 期:2
起始页码: 163
结束页码: 170
语种: 英语
英文关键词: Dead wood ecology ; Forest biodiversity ; Functional traits ; Phylogenetic diversity ; Salvage logging ; Saproxylic
Scopus关键词: assembly rule ; biodiversity ; community structure ; dead wood ; ecosystem function ; forest dynamics ; logging (timber) ; phylogenetics ; resource depletion ; saproxylic organism ; species richness
英文摘要: The species-energy hypothesis predicts that more productive areas support higher species richness. Conversely, when resources are reduced, species richness is reduced. Empirical tests of whether extinctions are predominantly caused by environmental constraints or competitive exclusion are lacking. We experimentally reduced dead wood to c. 15% of the initial amount after a major windstorm and examined changes in assembly mechanisms by combining trait-based and evolutionary species dissimilarities of eight taxonomic groups, differing in their dependence on dead wood (saproxylic/non-saproxylic). Species richness and assembly mechanisms of non-saproxylic taxa remained largely unaffected by removal of dead wood. By contrast, extinctions of saproxylic species were caused by reversing the predominant assembly mechanisms (e.g. increasing importance of competitive exclusion for communities assembled through environmental filtering or vice versa). We found no evidence for an intensification of the predominant assembly mechanism (e.g. competitive exclusion becoming stronger in a competitively structured community). Copyright © 2016 John Wiley & Sons Ltd/CNRS.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107807
Appears in Collections:气候减缓与适应

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作者单位: Bavarian Forest National Park, Freyunger Str. 2, Grafenau, Germany; Department of Ecology and Ecosystem Management, Chair for Terrestrial Ecology, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, Freising, Germany; Institute of Ecology, Friedrich Schiller University Jena, Dornburger Str. 159, Jena, Germany; Department of Biological Sciences, University of Toronto-Scarborough, Toronto, Canada; Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Canada; State Key Laboratory of Biocontrol, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong, Higher Education Institutes, College of Ecology and Evolution, Sun Yat-sen University, Guangzhou, China; Plant Biodiversity, Department of Ecology and Ecosystem Management, Technische Universität München, Emil-Ramann Strasse 2, Freising, Germany

Recommended Citation:
Thorn S.,Bässler C.,Bernhardt-Römermann M.,et al. Changes in the dominant assembly mechanism drive species loss caused by declining resources[J]. Ecology Letters,2016-01-01,19(2)
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