Arid
DOI10.1016/j.biocon.2008.09.021
Can threatened species survive where the top predator is absent?
Wallach, Arian D.1; Murray, Brad R.2; O’Neill, Adam J.3
通讯作者Wallach, Arian D.
来源期刊BIOLOGICAL CONSERVATION
ISSN0006-3207
出版年2009
卷号142期号:1页码:43-52
英文摘要

Top predators have been described as highly interactive keystone species. Their decline has been linked to secondary extinctions and their increase has been linked to ecological restoration. Several authors have recently argued that the dingo Canis lupus dingo is another example of a top predator that maintains mesopredators and generalist herbivores at low and stable numbers, thereby increasing biodiversity and productivity. Due to the sensitivity of many Australian species to introduced mesopredators and herbivores, the top predator hypothesis predicts that threatened species will not survive where dingoes are rare or absent. However, several threatened species have survived inside the Dingo Barrier Fence (DBF). We present a new view on the survival of the yellow-footed rock-wallaby Petrogale xanthopus xanthopus and the malleefowl Leipoa ocellata inside the DBF where the dingo is considered very rare, or in areas where the dingo is believed to have been eradicated several decades ago. We found that dingoes co-occurred with both threatened species. Dingoes were present at all wallaby colonies surveyed and occurred throughout their range. The most common predator detected in areas inhabited by the wallabies was in fact the dingo, and we found no significant difference between dingo abundance inside compared to outside the DBF. Malleefowl nests were found to be scent marked by dingoes at the three sites that we surveyed, despite these sites being close to human settlement and sheep farms, and in small and fragmented patches of wilderness. These findings provide further evidence for an association between the presence of dingoes and the survival of threatened species, which is in agreement with the top predator hypothesis. The results of this study challenges the current assumption that the presence and ecological consequence of dingoes in sheep country are negligible and we suggest that wildlife managers verify whether dingoes are present before predator control is initiated. (C) 2008 Elsevier Ltd. All rights reserved.


英文关键词Canis lupus dingo Keystone Malleefowl Rock-wallaby Scent marking Top-down regulation
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000262596900004
WOS关键词FOOTED ROCK-WALLABY ; NEW-SOUTH-WALES ; XANTHOPUS GRAY MARSUPIALIA ; VULPES-VULPES ; RED FOXES ; BIODIVERSITY PROTECTION ; POPULATION-DYNAMICS ; WESTERN-AUSTRALIA ; VERTEBRATE FAUNA ; TANAMI DESERT
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/2XILL650/159992
作者单位1.Univ Adelaide, Sch Earth & Environm Sci, Adelaide, SA 5005, Australia;
2.Univ Technol Sydney, Dept Environm Sci, Sydney, NSW 2007, Australia;
3.C&A Environm Serv, W Burleigh, Qld 4219, Australia
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Wallach, Arian D.,Murray, Brad R.,O’Neill, Adam J.. Can threatened species survive where the top predator is absent?[J],2009,142(1):43-52.
APA Wallach, Arian D.,Murray, Brad R.,&O’Neill, Adam J..(2009).Can threatened species survive where the top predator is absent?.BIOLOGICAL CONSERVATION,142(1),43-52.
MLA Wallach, Arian D.,et al."Can threatened species survive where the top predator is absent?".BIOLOGICAL CONSERVATION 142.1(2009):43-52.
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