Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 0006-3207 |
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 |
推荐引用方式 GB/T 7714 | 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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