干旱区生态环境知识资源中心(Arid): Evidence that the functional extinction of small mammals facilitates shrub encroachment following wildfire in arid Australia

Arid

DOI	10.1016/j.jaridenv.2019.01.015
	Evidence that the functional extinction of small mammals facilitates shrub encroachment following wildfire in arid Australia
	Gordon, Christopher E.1,2; Letnic, Mike 3,4
通讯作者	Gordon, Christopher E.
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2019
卷号	164 页码:60-68
英文摘要	Woody shrub encroachment has been linked to environmental changes associated with pastoralism, such as fire regime shifts and overgrazing, throughout Earth's rangelands. Extinction of native fauna that are consumers of shrubs has also accompanied pastoralism in many areas; however fauna declines have rarely been considered as a driver of encroachment. Here we investigate the interacting impacts that wildfire and functional extinction of native granivorous rodents and a small introduced herbivore, the European rabbit (Oryctolagus cuniculus), have on shrub seedling density in the Strzelecki Desert, Australia. Using data from field surveys conducted following wildfires in 2012, we show that shrub seedling densities were higher at burned than unburned sites in areas where rodents and rabbits were rare. However, at sites where rodents and rabbits were common, seedling densities were higher at unburned than burned sites and rodent activity was greater on burned sites during an optimal recruitment period. Our results provide support for the hypothesis that post-fire shrub recruitment is facilitated by the extinction of small mammals which consume shrubs and their seeds. Our study suggests that rewilding of small mammal assemblages may provide a mechanism to curb shrub encroachment.
英文关键词	Wildfire Small mammal Shrub encroachment Australia Arid Rewilding
类型	Article
语种	英语
国家	Australia ; Denmark
收录类别	SCI-E
WOS记录号	WOS:000462416300009
WOS关键词	BETTONG BETTONGIA-LESUEUR ; BURROWING BETTONG ; WOODY VEGETATION ; FIRE ; RAINFALL ; ECOLOGY ; COVER ; RECRUITMENT ; HERBIVORY ; PREDATOR
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/2XILL650/216731
作者单位	1.Univ Wollongong, Ctr Sustainable Ecosyst Solut, Ctr Environm Risk Management Bushfires, Wollongong, NSW 2522, Australia; 2.Aarhus Univ, Ctr Biodivers Dynam Changing World, DK-8000 Aarhus C, Denmark; 3.Univ New South Wales, Ctr Ecosyst Sci, Sydney, NSW 2052, Australia; 4.Univ New South Wales, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia
推荐引用方式 GB/T 7714	Gordon, Christopher E.,Letnic, Mike. Evidence that the functional extinction of small mammals facilitates shrub encroachment following wildfire in arid Australia[J],2019,164:60-68.
APA	Gordon, Christopher E.,&Letnic, Mike.(2019).Evidence that the functional extinction of small mammals facilitates shrub encroachment following wildfire in arid Australia.JOURNAL OF ARID ENVIRONMENTS,164,60-68.
MLA	Gordon, Christopher E.,et al."Evidence that the functional extinction of small mammals facilitates shrub encroachment following wildfire in arid Australia".JOURNAL OF ARID ENVIRONMENTS 164(2019):60-68.