干旱区生态环境知识资源中心(Arid): Population dynamics of dasyurid marsupials in dryland Australia: Variation across habitat and time

Arid

DOI	10.1111/aec.12854
	Population dynamics of dasyurid marsupials in dryland Australia: Variation across habitat and time
	Pavey, Chris R.1; Nano, Catherine E. M.2; Waltert, Matthias 3
通讯作者	Pavey, Chris R.
来源期刊	AUSTRAL ECOLOGY
ISSN	1442-9985
EISSN	1442-9993
出版年	2020
卷号	45 期号:3 页码:283-290
英文摘要	The irruptive population dynamics of rodents are a globally renowned wildlife phenomenon; however, the dynamics of other small mammals with which rodents are sympatric are poorly understood. Dryland Australia supports a high diversity of small (<200 g) arthropod-eating marsupials (Dasyuridae). Here, we test the hypothesis that dasyurid marsupials do not exhibit the same degree of irruptive population dynamics that are shown by rodents. We addressed this question by sampling small mammal assemblages on 20 permanent trapping sites in the Simpson Desert on 20 occasions from 2007 to 2017. Sampling was stratified across three broad habitat types: sandridge, gibber plain and clay plain. We captured 478 dasyurid marsupials of nine species, ranging in mean body mass from 5.75 to 93.50 g, at a capture rate of 1.71 per 100 trap-nights. Capture rate varied across habitat and over time and the interaction between these two effects was also significant. Capture rate was highest on clay plain (3.35 captures/100 trap-nights), followed by gibber plain (2.16 captures/100 trap-nights) and lowest on sand habitat (0.54 captures/100 trap-nights). Each species had a clear preference for one of the dominant habitat types. Dasyurid assemblages responded to high rainfall pulses in November-December 2008 and January 2015; however, the largest rainfall period in 2010-2011 resulted in very low captures. Likewise, a peak in abundance occurred in April 2008 although it was not preceded by high rainfall. We conclude that, although dasyurid marsupial capture rates varied up to 34 fold during the study period, population changes are not strongly tied to rainfall. Heterothermic physiology in this family, in particular the ability to use daily torpor to save energy, may be central to the decoupling of population dynamics from rainfall-driven primary productivity.
英文关键词	clay Dasyuridae gibber heterothermy rainfall
类型	Article
语种	英语
国家	Australia ; Germany
收录类别	SCI-E
WOS记录号	WOS:000506258600001
WOS关键词	ARID CENTRAL AUSTRALIA ; EXTREME RAINFALL ; TORPOR ; RODENT ; GRASSLANDS ; ABUNDANCE ; RESPONSES ; PATTERNS ; BEHAVIOR ; BASKING
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2020-01-09
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/2XILL650/312434
作者单位	1.CSIRO Land & Water, PMB 44, Winnellie, NT 0822, Australia; 2.Northern Terr Govt, Dept Environm & Nat Resources, Flora & Fauna Div, Alice Springs, NT, Australia; 3.Univ Gottingen, JF Blumenbach Inst Zool & Anthropol, Workgrp Endangered Species, Gottingen, Germany
推荐引用方式 GB/T 7714	Pavey, Chris R.,Nano, Catherine E. M.,Waltert, Matthias. Population dynamics of dasyurid marsupials in dryland Australia: Variation across habitat and time[J]. Commonwealth Scientific and Industrial Research Organisation,2020,45(3):283-290.
APA	Pavey, Chris R.,Nano, Catherine E. M.,&Waltert, Matthias.(2020).Population dynamics of dasyurid marsupials in dryland Australia: Variation across habitat and time.AUSTRAL ECOLOGY,45(3),283-290.
MLA	Pavey, Chris R.,et al."Population dynamics of dasyurid marsupials in dryland Australia: Variation across habitat and time".AUSTRAL ECOLOGY 45.3(2020):283-290.