DOI: 10.1111/ele.13820
论文题名: Empirical abundance distributions are more uneven than expected given their statistical baseline
作者: Diaz R.M. ; Ye H. ; Ernest S.K.M.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
卷: 24, 期: 9 起始页码: 2025
结束页码: 2039
语种: 英语
中文关键词: combinatorics
; constraints
; feasible set
; macroecology
; species abundance distributions
英文摘要: Exploring and accounting for the emergent properties of ecosystems as complex systems is a promising horizon in the search for general processes to explain common ecological patterns. For example the ubiquitous hollow-curve form of the species abundance distribution is frequently assumed to reflect ecological processes structuring communities, but can also emerge as a statistical phenomenon from the mathematical definition of an abundance distribution. Although the hollow curve may be a statistical artefact, ecological processes may induce subtle deviations between empirical species abundance distributions and their statistically most probable forms. These deviations may reflect biological processes operating on top of mathematical constraints and provide new avenues for advancing ecological theory. Examining ~22,000 communities, we found that empirical SADs are highly uneven and dominated by rare species compared to their statistical baselines. Efforts to detect deviations may be less informative in small communities—those with few species or individuals—because these communities have poorly resolved statistical baselines. The uneven nature of many empirical SADs demonstrates a path forward for leveraging complexity to understand ecological processes governing the distribution of abundance, while the issues posed by small communities illustrate the limitations of using this approach to study ecological patterns in small samples. © 2021 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166816
Appears in Collections: 气候变化与战略
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作者单位: School of Natural Resources and Environment, University of Florida, Gainesville, FL, United States; Health Science Center Libraries, University of Florida, Gainesville, FL, United States; Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, FL, United States
Recommended Citation:
Diaz R.M.,Ye H.,Ernest S.K.M.. Empirical abundance distributions are more uneven than expected given their statistical baseline[J]. Ecology Letters,2021-01-01,24(9)