干旱区生态环境知识资源中心(Arid): Heat dissipation behaviour of birds in seasonally hot arid-zones: are there global patterns?

Arid

DOI	10.1111/jav.02350
	Heat dissipation behaviour of birds in seasonally hot arid-zones: are there global patterns?
	Pattinson, Nicholas B.1; Thompson, Michelle L.1; Griego, Michael 3; Russell, Grace 4; Mitchell, Nicola J.4; Martin, Rowan O.5; Wolf, Blair O.3; Smit, Ben 6; Cunningham, Susan J.5; McKechnie, Andrew E.1,2; Hockey, Philip A. R.5
通讯作者	Pattinson, Nicholas B.
来源期刊	JOURNAL OF AVIAN BIOLOGY
ISSN	0908-8857
EISSN	1600-048X
出版年	2020
卷号	51 期号:2
英文摘要	Quantifying organismal sensitivity to heat stress provides one means for predicting vulnerability to climate change. Birds are ideal for investigating this approach, as they display quantifiable fitness consequences associated with behavioural and physiological responses to heat stress. We used a recently developed method that examines correlations between readily-observable behaviours and air temperature (T-air) to investigate interspecific variation in avian responses to heat stress in seasonally hot, arid regions on three continents: the southwestern United States, the Kalahari Desert of southern Africa and the Gascoyne region of western Australia. We found substantial interspecific variation in heat dissipation behaviours (wing-drooping, panting, activity-reduction, shade-seeking) across all three regions. However, pooling the data revealed that little of this interspecific variation was systematically explained by organismal traits (foraging guild, diet, drinking dependency, body mass or activity levels) at the scale we tested. After accounting for phylogeny, we found that larger birds engaged in wing-drooping behaviour at lower T-air and had lower activity levels at high T-air compared to smaller birds, indicating an effect of body mass on heat dissipation behaviour (HDB). In the Kalahari, reliance on drinking was correlated with significantly lower T-air at which panting commenced, suggesting a key role of water acquisition in HDB in that region. Birds also tended to retreat to shade at relatively lower T-air when more active, suggesting a behavioural trade-off between activity, heat load and microsite selection. Our results imply that the causes underlying interspecific variation in heat dissipation behaviours are complex. While the variation we observed was not systematically explained by the broad scale organismal traits we considered, we predict that the indices themselves will still reflect vulnerability to potential fitness costs of high air temperatures. Further research is needed on a species-specific basis to establish the functional significance of these indices.
英文关键词	birds climate change heat dissipation behaviour heat stress vulnerability
类型	Article
语种	英语
国家	South Africa ; USA ; Australia
收录类别	SCI-E
WOS记录号	WOS:000519212600009
WOS关键词	EVAPORATIVE COOLING CAPACITY ; BIOCLIMATE ENVELOPE MODELS ; CLIMATE-CHANGE ; AVIAN THERMOREGULATION ; ADAPTIVE THERMOREGULATION ; HIGH-TEMPERATURES ; THERMAL REFUGIA ; BODY CONDITION ; WATER-LOSS ; DESERT
WOS类目	Ornithology
WOS研究方向	Zoology
来源机构	University of Western Australia
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314902
作者单位	1.Univ Pretoria, DST NRF Ctr Excellence, FitzPatrick Inst African Ornithologs, Dept Zool & Entomol, Hatfield, South Africa; 2.South African Natl Biodivers Inst, South African Res Chair Conservat Physiol, Pretoria, South Africa; 3.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA; 4.Univ Western Australia, Sch Biol Sci, Crawley, WA, Australia; 5.Univ OfCape Town, DST NRF Ctr Excellence, FitzPatrick Inst African Ornithol, Rondebosch, South Africa; 6.Rhodes Univ, Dept Zool & Entomol, Grahamstown, South Africa
推荐引用方式 GB/T 7714	Pattinson, Nicholas B.,Thompson, Michelle L.,Griego, Michael,et al. Heat dissipation behaviour of birds in seasonally hot arid-zones: are there global patterns?[J]. University of Western Australia,2020,51(2).
APA	Pattinson, Nicholas B..,Thompson, Michelle L..,Griego, Michael.,Russell, Grace.,Mitchell, Nicola J..,...&Hockey, Philip A. R..(2020).Heat dissipation behaviour of birds in seasonally hot arid-zones: are there global patterns?.JOURNAL OF AVIAN BIOLOGY,51(2).
MLA	Pattinson, Nicholas B.,et al."Heat dissipation behaviour of birds in seasonally hot arid-zones: are there global patterns?".JOURNAL OF AVIAN BIOLOGY 51.2(2020).