DOI: 10.1111/ele.12912
Scopus记录号: 2-s2.0-85041063429
论文题名: Network spandrels reflect ecological assembly
作者: Maynard D.S. ; Serván C.A. ; Allesina S.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2018
卷: 21, 期: 3 起始页码: 324
结束页码: 334
语种: 英语
英文关键词: Coexistence
; community assembly
; interspecific competition
; network structure
; stability
英文摘要: Ecological networks that exhibit stable dynamics should theoretically persist longer than those that fluctuate wildly. Thus, network structures which are over-represented in natural systems are often hypothesised to be either a cause or consequence of ecological stability. Rarely considered, however, is that these network structures can also be by-products of the processes that determine how new species attempt to join the community. Using a simulation approach in tandem with key results from random matrix theory, we illustrate how historical assembly mechanisms alter the structure of ecological networks. We demonstrate that different community assembly scenarios can lead to the emergence of structures that are often interpreted as evidence of ‘selection for stability’. However, by controlling for the underlying selection pressures, we show that these assembly artefacts—or spandrels—are completely unrelated to stability or selection, and are instead by-products of how new species are introduced into the system. We propose that these network-assembly spandrels are critically overlooked aspects of network theory and stability analysis, and we illustrate how a failure to adequately account for historical assembly can lead to incorrect inference about the causes and consequences of ecological stability. © 2018 John Wiley & Sons Ltd/CNRS Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107487
Appears in Collections: 气候减缓与适应
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作者单位: Department of Ecology & Evolution, University of Chicago, 1101 E. 57th, Chicago, IL, United States; Computation Institute, University of Chicago, 5735 S. Ellis Ave, Chicago, IL, United States; Northwestern Institute on Complex Systems, Northwestern University, 600 Foster St, Evanston, IL, United States
Recommended Citation:
Maynard D.S.,Serván C.A.,Allesina S.. Network spandrels reflect ecological assembly[J]. Ecology Letters,2018-01-01,21(3)