干旱区生态环境知识资源中心(Arid): Effects of habitat, season and flood on corvid scavenging dynamics in Central Australia

Arid

DOI	10.1111/aec.13177
	Effects of habitat, season and flood on corvid scavenging dynamics in Central Australia
	Bragato, Patrick J.; Spencer, Emma E.; Dickman, Chris R.; Crowther, Mathew S.; Tulloch, Ayesha; Newsome, Thomas M.
通讯作者	Bragato, PJ
来源期刊	AUSTRAL ECOLOGY
ISSN	1442-9985
EISSN	1442-9993
出版年	2022
卷号	47 期号:5 页码:939-953
英文摘要	Carrion is an ubiquitous resource that drives the dynamics of scavenger populations and shapes the structure and composition of their communities. Corvids (Family: Corvidae) are among the most common scavengers globally, facilitating carcass discovery by other species and contributing to carcass biomass removal. Here, we examine how environmental factors influence corvid scavenging dynamics in an arid region of Central Australia. Specifically, we investigate how habitat, season and a major flood event affect corvid discovery and visitation time, and group size around carcass sites. To do so, we used data collected from camera traps monitoring 80 experimentally positioned red kangaroo (Osphranter rufus) carcasses stratified across closed and open habitats, spring and winter seasons, and before and after a flood event. Corvids took longer to discover carcasses in closed compared to open habitats, but habitat did not affect how long corvids spent visiting carcasses, or corvid group size. Corvids discovered carcasses faster in winter compared to spring and in post-flood compared with the pre-flood periods, and season and flood interacted to influence both corvid visitation time and group size. Our results reflect a complex interplay between temperature, the extreme boom and bust cyclicity of the study region and changing corvid activity and abundance in the local study area. We identify environmental factors as key determinants of corvid scavenging dynamics and provide the first detailed description of scavenging by corvids in the arid zone of Australia.
英文关键词	boom and bust cycle carrion ecology Corvus seasonal variation Simpson Desert
类型	Article
语种	英语
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000791747200001
WOS关键词	PREDATION RISK ; COMMON RAVENS ; PATCH USE ; CARRION ; ABUNDANCE ; RAINFALL ; CARCASSES ; ASSEMBLAGES ; COMPETITION ; EFFICIENCY
WOS类目	Ecology
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/2XILL650/391959
推荐引用方式 GB/T 7714	Bragato, Patrick J.,Spencer, Emma E.,Dickman, Chris R.,et al. Effects of habitat, season and flood on corvid scavenging dynamics in Central Australia[J],2022,47(5):939-953.
APA	Bragato, Patrick J.,Spencer, Emma E.,Dickman, Chris R.,Crowther, Mathew S.,Tulloch, Ayesha,&Newsome, Thomas M..(2022).Effects of habitat, season and flood on corvid scavenging dynamics in Central Australia.AUSTRAL ECOLOGY,47(5),939-953.
MLA	Bragato, Patrick J.,et al."Effects of habitat, season and flood on corvid scavenging dynamics in Central Australia".AUSTRAL ECOLOGY 47.5(2022):939-953.