Arid
DOI10.1111/cobi.12905
Habitat as a mediator of mesopredator-driven mammal extinction
McDonald, Peter J.1,2; Nano, Catherine E. M.1; Ward, Simon J.1; Stewart, Alistair1; Pavey, Chris R.3; Luck, Gary W.4; Dickman, Chris R.2
通讯作者McDonald, Peter J.
来源期刊CONSERVATION BIOLOGY
ISSN0888-8892
EISSN1523-1739
出版年2017
卷号31期号:5页码:1183-1191
英文摘要

A prevailing view in dryland systems is that mammals are constrained by the scarcity of fertile soils and primary productivity. An alternative view is that predation is a primary driver of mammal assemblages, especially in Australia, where 2 introduced mesopredatorsferal cat (Felis catus) and red fox (Vulpes vulpes)are responsible for severe declines of dryland mammals. We evaluated productivity and predation as drivers of native mammal assemblage structure in dryland Australia. We used new data from 90 sites to examine the divers of extant mammal species richness and reconstructed historic mammal assemblages to determine proportional loss of mammal species across broad habitat types (landform and vegetation communities). Predation was supported as a major driver of extant mammal richness, but its effect was strongly mediated by habitat. Areas that were rugged or had dense grass cover supported more mammal species than the more productive and topographically simple areas. Twelve species in the critical weight range (CWR) (35-5500 g) that is most vulnerable to mesopredator predation were extirpated from the continent’s central region, and the severity of loss of species correlated negatively with ruggedness and positively with productivity. Based on previous studies, we expect that habitat mediates predation from red foxes and feral cats because it affects these species’ densities and foraging efficiency. Large areas of rugged terrain provided vital refuge for Australian dryland mammals, and we predict such areas will support the persistence of CWR species in the face of ongoing mammal declines elsewhere in Australia.


英文关键词feral cat mammal decline predation red fox refuge ruggedness
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000409319400021
WOS关键词CRITICAL WEIGHT RANGE ; ARID SOUTH-AUSTRALIA ; SEMIARID ECOSYSTEMS ; FERAL CATS ; PREDATION ; DECLINE ; PRODUCTIVITY ; FAUNA ; CONSERVATION ; MARSUPIALS
WOS类目Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/198193
作者单位1.Dept Environm & Nat Resources, Flora & Fauna Div, Alice Springs, NT 0870, Australia;
2.Univ Sydney, Sch Life & Environm Sci, Desert Ecol Res Grp, Sydney, NSW 2006, Australia;
3.CSIRO Land & Water, POB 2111, Alice Springs, NT 0871, Australia;
4.Charles Sturt Univ, Inst Land Water & Soc, Albury, NSW 2640, Australia
推荐引用方式
GB/T 7714
McDonald, Peter J.,Nano, Catherine E. M.,Ward, Simon J.,et al. Habitat as a mediator of mesopredator-driven mammal extinction[J],2017,31(5):1183-1191.
APA McDonald, Peter J..,Nano, Catherine E. M..,Ward, Simon J..,Stewart, Alistair.,Pavey, Chris R..,...&Dickman, Chris R..(2017).Habitat as a mediator of mesopredator-driven mammal extinction.CONSERVATION BIOLOGY,31(5),1183-1191.
MLA McDonald, Peter J.,et al."Habitat as a mediator of mesopredator-driven mammal extinction".CONSERVATION BIOLOGY 31.5(2017):1183-1191.
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