Arid
DOI10.1016/j.jaridenv.2015.03.003
Lizards of the Thar Desert - Resource partitioning and community composition
Agarwar, Ishan; Goyal, Surendra P.; Qureshi, Qamar
通讯作者Agarwar, Ishan
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
出版年2015
卷号118页码:58-64
英文摘要

How similar species co-exist in nature is a fundamental question in community ecology. Resource partitioning has been studied in desert lizard communities across four continents, but data from South Asia is lacking. We used area-constrained visual encounter surveys to study community composition and spatial and temporal resource partitioning in a lizard community during summer in the Thar Desert, western India, addressing an important biogeographic gap in knowledge. Twelve one-hectare grids divided into 25 m x 25 m plots were placed across four habitats barren dunes, stabilized dunes, grassland, and rocky hills. We recorded 1039 sightings of 12 species during 84 sampling sessions. Lizard abundance decreased in the order stabilized dunes > grassland > barren dunes > rocky hills; richness was in roughly the opposite order. Resource partitioning was examined for the seven commonest species. Overall spatial overlap was low (<0.6) between species pairs. Overlap was higher within habitats, but species showed finer separation through use of different microhabitat categories and specific spatial resources, as well as by positioning at different distances to vegetation. Diurnal species were also separated by peak time of activity. Space appears to be an important resource dimension facilitating coexistence in this desert lizard community. (C) 2015 Elsevier Ltd. All rights reserved.


英文关键词Desert lizard community Visual encounter survey Spatial overlap Daily activity India
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000352183000007
WOS关键词NICHE SEGREGATION ; DIVERSITY ; HETEROGENEITY ; ORGANIZATION ; METAANALYSIS
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/188331
作者单位Wildlife Inst India, Dehra Dun 248001, Uttar Pradesh, India
推荐引用方式
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Agarwar, Ishan,Goyal, Surendra P.,Qureshi, Qamar. Lizards of the Thar Desert - Resource partitioning and community composition[J],2015,118:58-64.
APA Agarwar, Ishan,Goyal, Surendra P.,&Qureshi, Qamar.(2015).Lizards of the Thar Desert - Resource partitioning and community composition.JOURNAL OF ARID ENVIRONMENTS,118,58-64.
MLA Agarwar, Ishan,et al."Lizards of the Thar Desert - Resource partitioning and community composition".JOURNAL OF ARID ENVIRONMENTS 118(2015):58-64.
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