气候变化领域集成服务门户(CCPortal): Network spandrels reflect ecological assembly

CCPortal

DOI	10.1111/ele.12912
	Network spandrels reflect ecological assembly
	Maynard D.S.; Serván C.A.; Allesina S.
发表日期	2018
ISSN	1461023X
卷号	21 期号:3
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
英文关键词	Coexistence; community assembly; interspecific competition; network structure; stability
语种	英语
scopus关键词	coexistence; community structure; ecological approach; ecological stability; interspecific competition; network analysis; new species; simulation; biological model; ecology; ecosystem; Ecology; Ecosystem; Models, Biological
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121355
作者单位	Department of Ecology & Evolution, University of Chicago, 1101 E. 57th, Chicago, IL 60637, United States; Computation Institute, University of Chicago, 5735 S. Ellis Ave, Chicago, IL 60637, United States; Northwestern Institute on Complex Systems, Northwestern University, 600 Foster St, Evanston, IL 60208, United States
推荐引用方式 GB/T 7714	Maynard D.S.,Serván C.A.,Allesina S.. Network spandrels reflect ecological assembly[J],2018,21(3).
APA	Maynard D.S.,Serván C.A.,&Allesina S..(2018).Network spandrels reflect ecological assembly.Ecology Letters,21(3).
MLA	Maynard D.S.,et al."Network spandrels reflect ecological assembly".Ecology Letters 21.3(2018).