| DOI: | 10.1111/ele.12501
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| Scopus记录号: | 2-s2.0-84943662358
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| 论文题名: | Experimental evidence for a time-integrated effect of productivity on diversity |
| 作者: | Armitage D.W.
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| 刊名: | Ecology Letters
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| ISSN: | 1461023X
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| EISSN: | 1461-0248
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| 出版年: | 2015
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| 卷: | 18, 期:11 | | 起始页码: | 1216
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| 结束页码: | 1225
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| 语种: | 英语
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| 英文关键词: | Pseudomonas fluorescens
; Adaptive radiation
; Area
; Diversification
; Productivity
; Time
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| Scopus关键词: | adaptive radiation
; bacterium
; biodiversity
; divergence
; experimental study
; phenotypic plasticity
; population growth
; time dependent behavior
; Bacteria (microorganisms)
; Pseudomonas fluorescens
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| 英文摘要: | The time-area-productivity hypothesis is a proposed explanation for global biodiversity gradients. It predicts that a bioregion's modern diversity is the product of its area and productivity, integrated over evolutionary time. I performed the first experimental test of the time-area-productivity hypothesis using a model system for adaptive radiation - the bacterium Pseudomonas fluorescens SBW25. I initiated hundreds of independent radiations under culture conditions spanning a variety of productivities, spatial extents and temporal extents. Time-integrated productivity was the single best predictor of extant phenotypic diversity and richness. In contrast, 'snapshots' of modern environmental variables at the time of sampling were less useful predictors of diversity patterns. These results were best explained by marked variation in population growth parameters under different productivity treatments and the long periods over which standing diversity could persist in unproductive habitats. These findings provide the first experimental support for time-integrated productivity as a putative driver of regional biodiversity patterns. © 2015 John Wiley & Sons Ltd/CNRS. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/107851
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Integrative Biology, University of California Berkeley, Berkeley, CA, United States
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| Recommended Citation: | |
Armitage D.W.. Experimental evidence for a time-integrated effect of productivity on diversity[J]. Ecology Letters,2015-01-01,18(11)
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