DOI: 10.1016/j.foreco.2017.01.034
Scopus记录号: 2-s2.0-85011959009
论文题名: Indian Ocean coastal thicket is of high conservation value for preserving taxonomic and functional diversity of forest-dependent bird communities in a landscape of restricted forest availability
作者: Ehlers Smith D.A. ; Ehlers Smith Y.C. ; Downs C.T.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 390 起始页码: 157
结束页码: 165
语种: 英语
英文关键词: Ecosystem services
; Forest fragmentation
; Forest regeneration
; Habitat structure
; RLQ analysis
; Trait space
Scopus关键词: Birds
; Conservation
; Ecology
; Ecosystems
; Land use
; Reforestation
; Surveys
; Vegetation
; Ecosystem services
; Forest fragmentations
; Forest regeneration
; Habitat structures
; RLQ analysis
; Trait space
; Forestry
; anthropogenic effect
; bird
; coastal zone
; ecosystem service
; forest ecosystem
; functional morphology
; gall insect
; habitat conservation
; habitat fragmentation
; habitat structure
; insect
; land use change
; microhabitat
; protected area
; regeneration
; species richness
; taxonomy
; vegetation structure
; Indian Ocean
; South Africa
; Aves
; Hexapoda
英文摘要: The Indian Ocean Coastal Belt Forest is extremely biodiverse but is threatened by anthropogenic land-use change. In South Africa, remnant forest patches are divided into highly restricted but protected indigenous forest (IF) and abundant but unprotected coastal thicket/dense bush (DB), which likely represents secondary/regenerating IF. We tested the hypothesis that DB had value for conserving forest-dependent avian taxonomic and functional diversity, as (a) DB is situated with in the forest-anthropogenic land-use mosaic and (b) birds maintain diverse ecosystem functions and are sensitive to environmental change given their varied biological traits. We conducted 149 and 112 fixed-radius point-count surveys of avian communities in 99, and 24, patches of DB and IF, respectively, at each location recording microhabitat vegetation structure. We compared vegetation characteristics and taxonomic species richness between vegetation classes, and tested the breadth of functional trait-space and for significant associations with vegetation structures at each survey location, using RLQ analysis. Vegetation classes differed significantly, but floral species overlap and vegetation structures in DB closely resembled regenerating IF habitat. Specialist ground-nesting and insect-gleaning species corresponded to taller, more diverse IF structures. Other biological traits and total species richness overlapped broadly across both classes, but IF had significantly higher mean species richness. Given the relatively high taxonomic and functional diversity of the avian community in the abundant DB, the scarcity of IF, and the proximity of DB to the anthropogenic land-use mosaic, we recommend allocating suitable DB patches to the Protected Area Network, which may simultaneously help preserve avian taxonomic and functional diversity, facilitate colonisation throughout the fragmented landscape and provide ecosystem services to anthropogenic land uses. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64456
Appears in Collections: 影响、适应和脆弱性
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作者单位: University of KwaZulu-Natal, School of Life Sciences, Private Bag X01, Scottsville, Pietermaritzburg, South Africa
Recommended Citation:
Ehlers Smith D.A.,Ehlers Smith Y.C.,Downs C.T.. Indian Ocean coastal thicket is of high conservation value for preserving taxonomic and functional diversity of forest-dependent bird communities in a landscape of restricted forest availability[J]. Forest Ecology and Management,2017-01-01,390