DOI: 10.1016/j.foreco.2017.06.045
Scopus记录号: 2-s2.0-85021385210
论文题名: Camera-trap data elucidate habitat requirements and conservation threats to an endangered forest specialist, the Spotted Ground Thrush (Zoothera guttata)
作者: Ehlers Smith D.A. ; Ehlers Smith Y.C. ; Ramesh T. ; Downs C.T.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 400 起始页码: 523
结束页码: 530
语种: 英语
英文关键词: Camera trapping
; Detection probability
; Forest fragmentation
; Forest patch isolation
; Land-use change
; Occupancy modelling
; Spotted Ground Thrush
Scopus关键词: Cameras
; Conservation
; Ecosystems
; Land use
; Population distribution
; Detection probabilities
; Forest fragmentations
; Forest patches
; Land-use change
; Spotted Ground Thrush
; Forestry
; Zoothera guttata
英文摘要: The spotted ground thrush (Zoothera guttata; SGT) is a globally endangered forest specialist whose distribution is poorly understood in the critically endangered Indian Ocean Coastal Belt Forest (IOCBF) biome on the east coast of southern Africa. More than 70% of the IOCBF has been lost to development, resulting in fragmented forest remnants within a mosaic of different land uses. We conducted camera-trap surveys with 5796 trap-days in 82 forest patches of various sizes across a gradient of land-use types in the IOCBF during the winter seasons of 2014–2016 to establish occupancy (Ψ) of SGT. We used occupancy modelling and incorporated forest microhabitat characteristics and surrounding land-use classifications to compare sites and determine SGT distribution across the habitat mosaic. The top model estimated an average Ψ = 0.39 ± 0.09, and detection probability (P) = 0.11 ± 0.03. At the landscape scale, larger, less isolated patches had a higher Ψ of SGT while P decreased with proximity to cultivated land. At the microhabitat scale, a high percentage of bare ground influenced Ψ positively but P negatively, as did short grass cover. However, short herbaceous cover and high stem density of large (11–15 m) trees influenced P positively. These results detail the influence of landscape-scale factors including forest fragmentation and conversion to agriculture in conjunction with forest microhabitat-scale characteristics, on patch selection and distribution of a cryptic, ground-dwelling species that is both threatened and under-studied. Given its endangered status and dependence on larger and more mature forest patches, SGT may be an effective flagship species for the conservation of threatened IOCBF patches. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64261
Appears in Collections: 影响、适应和脆弱性
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作者单位: School of Life Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville, Pietermaritzburg, South Africa; Sálim Ali Centre for Ornithology and Natural History (SACON), Anaikatty Post, Coimbatore, Tamil Nadu, India
Recommended Citation:
Ehlers Smith D.A.,Ehlers Smith Y.C.,Ramesh T.,et al. Camera-trap data elucidate habitat requirements and conservation threats to an endangered forest specialist, the Spotted Ground Thrush (Zoothera guttata)[J]. Forest Ecology and Management,2017-01-01,400