全球智库信息集成服务系统(G2TT): Ecological flow analysis of network collapse II: Indicators of ecosystem level vulnerability.

G2TT

来源类型	Conference or Workshop Item (UNSPECIFIED)
规范类型	其他
	Ecological flow analysis of network collapse II: Indicators of ecosystem level vulnerability.
	Rovenskaya E; Veshchinskaya V; Fath BD; Dieckmann U; Brannstrom Å
发表日期	2012
出处	iEMSs 2012: Managing Resources of a Limited Planet, 1-5 July 2012
出版年	2012
语种	英语
摘要	Using donor-controlled, bottom-up equations to describe network collapse we systematically investigate the impact each species has on the survival or extinction of other species. Short of extinction, one can determine the integrated losses experienced by the ecosystem. These losses are aggregated into system level indicators, such as entropy, average gain/loss, average time to extinction, etc. The methodology is applied to 18 ecological flow networks available in the literature. We calculate the correlations between various indicators and determine high positive correlation between: number of nodes & maximal trophic level; connectedness & average entropy losses; number of nodes & average number of extinct nodes; and, maximum trophic level & evenness of links. A high negative correlation was found between: number of nodes & connectedness; connectedness & maximal trophic level; maximum tropic level & average entropy loss; and, connectedness & evenness of flows. Lastly, a low correlation was found between: average number of extinct compartments & evenness of flows; number of nodes & evenness of stocks; and, evenness of flows & evenness of stocks.
主题	Advanced Systems Analysis (ASA) ; Evolution and Ecology (EEP)
关键词	Ecological network analysis Ecosystem flows Extinction Indicators Vulnerability
URL	http://pure.iiasa.ac.at/id/eprint/10193/
来源智库	International Institute for Applied Systems Analysis (Austria)
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/132484
推荐引用方式 GB/T 7714	Rovenskaya E,Veshchinskaya V,Fath BD,et al. Ecological flow analysis of network collapse II: Indicators of ecosystem level vulnerability.. 2012.