干旱区生态环境知识资源中心(Arid): On the landscape of fear: shelters affect foraging by dunnarts (Marsupialia, Sminthopsis spp.) in a sandridge desert environment

Arid

DOI	10.1093/jmammal/gyz195
	On the landscape of fear: shelters affect foraging by dunnarts (Marsupialia, Sminthopsis spp.) in a sandridge desert environment
	Bleicher, Sonny S.1,2; Dickman, Christopher R.3
通讯作者	Bleicher, Sonny S.
来源期刊	JOURNAL OF MAMMALOGY
ISSN	0022-2372
EISSN	1545-1542
出版年	2020
卷号	101 期号:1 页码:281-290
英文摘要	Disturbances such as fire reduce the structural complexity of terrestrial habitats, increasing the risk of predation for small prey species. The postfire effect of predation has especially deleterious effects in Australian habitats owing to the presence of invasive mammalian predators, the red fox (Vulpes vulpes) and feral cat (Felis catus), that rapidly exploit burned habitats. Here, we investigated whether the provision of artificial shelter could alleviate the risk of predation perceived by two species of small marsupial, the dunnarts Sminthopsis hirtipes and S. youngsoni, in open postfire habitat in the sandridge system of the Simpson Desert, central Australia. We installed artificial shelters constructed from wire mesh that allowed passage of the dunnarts but not of their predators at one site, and measured and compared the perceived risk of predation by the dunnarts there with those on a control site using optimal patch-use theory (giving-up densities, GUDs). GUDs were lower near artificial shelters than away from them, and near dune crests where dunnarts typically forage, suggesting that the shelters acted as corridors for dunnarts to move up to the crests from burrows in the swales. Foraging was lower near the crest in the control plot. Two-day foraging bouts were observed in dunnart activity, with recruitment to GUD stations occurring a day earlier in the augmented shelter plot. Despite these results, the effects of the shelters were localized and not evident at the landscape scale, with GUDs reduced also in proximity to sparse natural cover in the form of regenerating spinifex grass hummocks. Mapping dunnart habitat use using the landscape of fear (LOF) framework confirmed that animals perceived safety near shelter and risk away from it. We concluded that the LOF framework can usefully assess real-time behavioral responses of animals to management interventions in situations where demographic responses take longer to occur.
英文关键词	animal behavior arid dasyurid dunnart fire ecology foraging ecology habitat selection invasive mesopredators population busts predation risk
类型	Article
语种	英语
国家	USA ; Australia
收录类别	SCI-E
WOS记录号	WOS:000518554900029
WOS关键词	SMALL MAMMALS ; PATCH USE ; HABITAT RESTORATION ; INVASIVE PREDATORS ; ARTIFICIAL ROCKS ; OPTIMAL FORAGERS ; SIMPSON DESERT ; CLIMATE-CHANGE ; NATIONAL-PARK ; RISK
WOS类目	Zoology
WOS研究方向	Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315026
作者单位	1.George Mason Univ, Environm Sci & Policy, 4400 Univ Dr, Fairfax, VA 22030 USA; 2.Washington & Lee Univ, Biol Dept, 204 W Washington St,Howe Hall 301, Lexington, VA 24450 USA; 3.Univ Sydney, Desert Ecol Res Grp, Sch Life & Environm Sci A08, Sydney, NSW 2006, Australia
推荐引用方式 GB/T 7714	Bleicher, Sonny S.,Dickman, Christopher R.. On the landscape of fear: shelters affect foraging by dunnarts (Marsupialia, Sminthopsis spp.) in a sandridge desert environment[J],2020,101(1):281-290.
APA	Bleicher, Sonny S.,&Dickman, Christopher R..(2020).On the landscape of fear: shelters affect foraging by dunnarts (Marsupialia, Sminthopsis spp.) in a sandridge desert environment.JOURNAL OF MAMMALOGY,101(1),281-290.
MLA	Bleicher, Sonny S.,et al."On the landscape of fear: shelters affect foraging by dunnarts (Marsupialia, Sminthopsis spp.) in a sandridge desert environment".JOURNAL OF MAMMALOGY 101.1(2020):281-290.