NDLI: Determinants of plant species richness and patterns of nestedness in fragmented landscapes: evidence from land-bridge islands

Content Provider	Springer Nature Link
Author	Hu, Guang Feeley, Kenneth J. Wu, Jianguo Xu, Gaofu Yu, Mingjian
Copyright Year	2011
Abstract	Land-bridge islands formed by dam construction are considered to be “experimental” systems for studying the effects of habitat loss and fragmentation, offering many distinct advantages over terrestrial fragments. The Thousand Island Lake in Southeast China is one such land-bridge system with more than 1000 islands. Based on a field survey of vascular plant richness on 154 land-bridge islands during 2007–2008, we examined the effects of island and landscape attributes on plant species richness and patterns of species nestedness. We also examined the different responses of plant functional groups (classified according to growth form and shade tolerance) to fragmentation. We found that island area explained the greatest amount of variation in plant species richness. Island area and shape index positively affected species diversity and the degree of nestedness exhibited by plant communities while the perimeter to area ratio of the islands had a negative effect. Shade-tolerant plants were the most sensitive species group to habitat fragmentation. Isolation negatively affected the degree of nestedness in herb and shade-intolerant plants including species with various dispersal abilities in the fragmented landscape. Based on these results, we concluded that the effects of habitat loss and fragmentation on overall species richness depended mostly on the degree of habitat loss, but patterns of nestedness were generated from different ecological mechanisms due to species-specific responses to different characteristics of habitat patches.
Starting Page	1405
Ending Page	1417
Page Count	13
File Format	PDF
ISSN	09212973
Journal	Landscape Ecology
Volume Number	26
Issue Number	10
e-ISSN	15729761
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-10-07
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Habitat fragmentation Plant diversity Landscape spatial attributes Functional group Species-area relationship Community assembly Forestry Ecology Landscape Ecology Plant Ecology Plant Sciences Forestry Management
Content Type	Text
Resource Type	Article
Subject	Geography, Planning and Development Ecology Nature and Landscape Conservation

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