DOI: 10.1111/ele.13450
论文题名: Habitat fragmentation and species diversity in competitive communities
作者: Rybicki J. ; Abrego N. ; Ovaskainen O.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2020
卷: 23, 期: 3 起始页码: 506
结束页码: 517
语种: 英语
中文关键词: Fragmentation
; habitat loss
; individual-based models
; metacommunity theory
; simulation model
; spatial models
; species richness
英文关键词: biodiversity
; ecosystem
; longitudinal study
; Biodiversity
; Ecosystem
; Longitudinal Studies
英文摘要: Habitat loss is one of the key drivers of the ongoing decline of biodiversity. However, ecologists still argue about how fragmentation of habitat (independent of habitat loss) affects species richness. The recently proposed habitat amount hypothesis posits that species richness only depends on the total amount of habitat in a local landscape. In contrast, empirical studies report contrasting patterns: some find positive and others negative effects of fragmentation per se on species richness. To explain this apparent disparity, we devise a stochastic, spatially explicit model of competitive species communities in heterogeneous habitats. The model shows that habitat loss and fragmentation have complex effects on species diversity in competitive communities. When the total amount of habitat is large, fragmentation per se tends to increase species diversity, but if the total amount of habitat is small, the situation is reversed: fragmentation per se decreases species diversity. © 2019 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166707
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Institute of Science and Technology Austria (IST Austria), Am Campus 1, Klosterneuburg, 3400, Austria; Department of Agricultural Sciences, University of Helsinki, PO Box 27, Helsinki, FI-00014, Finland; Oragnismal and Evolutionary Biology Research Programme, University of Helsinki, PO Box 65, Helsinki, FI-00014, Finland
Recommended Citation:
Rybicki J.,Abrego N.,Ovaskainen O.. Habitat fragmentation and species diversity in competitive communities[J]. Ecology Letters,2020-01-01,23(3)