Arid
DOI10.1007/s00442-007-0849-1
Overdispersion of body size in Australian desert lizard communities at local scales only: no evidence for the Narcissus effect
Rabosky, Daniel L.; Reid, Julian; Cowan, Mark A.; Foulkes, Jeff
通讯作者Rabosky, Daniel L.
来源期刊OECOLOGIA
ISSN0029-8549
EISSN1432-1939
出版年2007
卷号154期号:3页码:561-570
英文摘要

Both local and regional processes may contribute to community diversity and structure at local scales. Although many studies have investigated patterns of local or regional community structure, few have addressed the extent to which local community structure influences patterns within regional species pools. Here we investigate the role of body size in community assembly at local and regional scales in Ctenotus lizards from arid Australia. Ctenotus has long been noted for its exceptional species diversity in the Australian arid-zone, and previous studies have attempted to elucidate the processes underlying species coexistence within communities of these lizards. However, no consensus has emerged on the role of interspecific competition in the assembly and maintenance of Ctenotus communities. We studied Ctenotus communities at several hundred sites in the arid interior of Australia to test the hypothesis that body sizes within local and regional Ctenotus assemblages should be overdispersed relative to null models of community assembly, and we explored the relationship between body size dispersion at local and regional scales. Results indicate a striking pattern of community-wide overdispersion of body size at local scales, as measured by the variance in size ratios among co-occurring species. However, we find no evidence for body size overdispersion within regional species pools, suggesting a lack of correspondence between processes influencing the distribution of species phenotypes at local and regional scales. We suggest that size ratio constancy in Ctenotus communities may have resulted from contemporary ecological interactions among species or ecological character displacement, and we discuss alternative explanations for the observed patterns.


英文关键词character displacement community assembly competition null model regional diversity
类型Article
语种英语
国家USA ; Australia
收录类别SCI-E
WOS记录号WOS:000251146900012
WOS关键词CHARACTER DISPLACEMENT ; PHYLOGENETIC ANALYSIS ; ASSEMBLY RULES ; INTERSPECIFIC COMPETITION ; MORPHOLOGICAL PATTERNS ; RODENT COMMUNITIES ; SCINCID LIZARDS ; ANOLIS LIZARDS ; CTENOTUS ; ECOLOGY
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
来源机构Commonwealth Scientific and Industrial Research Organisation
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/155551
作者单位(1)Cornell Univ, Dept Ecol & Evolut Biol, Ithaca, NY 14853 USA;(2)Cornell Labof Ornithol, Ithaca, NY 14850 USA;(3)Australian Natl Univ, Fenner Sch Environm & Soc, Canberra, ACT 0200, Australia;(4)CSIRO Sustainable Ecosyst, Canberra, ACT 2601, Australia;(5)Dept Environm Conservat, Wanneroo, WA 6946, Australia;(6)Dept Environm & Heritage, Adelaide, SA 5001, Australia
推荐引用方式
GB/T 7714
Rabosky, Daniel L.,Reid, Julian,Cowan, Mark A.,et al. Overdispersion of body size in Australian desert lizard communities at local scales only: no evidence for the Narcissus effect[J]. Commonwealth Scientific and Industrial Research Organisation,2007,154(3):561-570.
APA Rabosky, Daniel L.,Reid, Julian,Cowan, Mark A.,&Foulkes, Jeff.(2007).Overdispersion of body size in Australian desert lizard communities at local scales only: no evidence for the Narcissus effect.OECOLOGIA,154(3),561-570.
MLA Rabosky, Daniel L.,et al."Overdispersion of body size in Australian desert lizard communities at local scales only: no evidence for the Narcissus effect".OECOLOGIA 154.3(2007):561-570.
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