干旱区生态环境知识资源中心(Arid): Weighing the cost: the impact of serial heatwaves on body mass in a small Australian passerine

Arid

DOI	10.1111/jav.02355
	Weighing the cost: the impact of serial heatwaves on body mass in a small Australian passerine
	Sharpe, Lynda; Cale, Belinda; Gardner, Janet L.
通讯作者	Gardner, Janet L.
来源期刊	JOURNAL OF AVIAN BIOLOGY
ISSN	0908-8857
EISSN	1600-048X
出版年	2019
卷号	50 期号:11
英文摘要	Rising temperatures pose a grave risk to arid zone birds because they are already living close to their physiological limits and must balance water conservation against the need for evaporative cooling. We assess how extreme temperatures affect a wild population of small passerines by monitoring daily mass change in individual jacky winters Microeca fascinans (a small Australasian robin) across a series of severe heatwaves that afflicted southern Australia in the summer of 2018-2019. Daily maximum temperature and duration of heat exposure were negatively related to the birds' ability to maintain body mass. At maximum temperatures >= 42 degrees C, birds lost 2.0% of their body mass daily and at >= 45 degrees C, 2.6%. Apparent mortality increased almost three-fold, and all breeding birds abandoned their nests. Nevertheless, net daily mass loss was less than might be expected from laboratory-based findings, presumably because wild jacky winters undertook behavioural thermoregulation. The birds also regained some mass between heatwave events and suffered no long-term reduction in body condition.
英文关键词	Australian passerine body condition evaporative water loss heatwave heat stress thermoregulation
类型	Article
语种	英语
国家	Australia
收录类别	SCI-E
WOS记录号	WOS:000503261000003
WOS关键词	AVIAN THERMOREGULATION ; FORAGING BEHAVIOR ; HIGH-TEMPERATURES ; RESPONSES ; EVENTS
WOS类目	Ornithology
WOS研究方向	Zoology
EI主题词	2019-11-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310528
作者单位	Australian Natl Univ, Div Ecol & Evolut, Res Sch Biol, Canberra, ACT, Australia
推荐引用方式 GB/T 7714	Sharpe, Lynda,Cale, Belinda,Gardner, Janet L.. Weighing the cost: the impact of serial heatwaves on body mass in a small Australian passerine[J],2019,50(11).
APA	Sharpe, Lynda,Cale, Belinda,&Gardner, Janet L..(2019).Weighing the cost: the impact of serial heatwaves on body mass in a small Australian passerine.JOURNAL OF AVIAN BIOLOGY,50(11).
MLA	Sharpe, Lynda,et al."Weighing the cost: the impact of serial heatwaves on body mass in a small Australian passerine".JOURNAL OF AVIAN BIOLOGY 50.11(2019).