干旱区生态环境知识资源中心(Arid): Aridity and land use negatively influence a dominant species' upper critical thermal limits

Arid

DOI	10.7717/peerj.6252
	Aridity and land use negatively influence a dominant species' upper critical thermal limits
	Andrew, Nigel R.1; Miller, Cara 2; Hall, Graham 1; Hemmings, Zac 1; Oliver, Ian 1,3
通讯作者	Andrew, Nigel R.
来源期刊	PEERJ
ISSN	2167-8359
出版年	2019
卷号	6
英文摘要	Understanding the physiological tolerances of ectotherms, such as thermal limits, is important in predicting biotic responses to climate change. However, it is even more important to examine these impacts alongside those from other landscape changes: such as the reduction of native vegetation cover, landscape fragmentation and changes in land use intensity (LUI). Here, we integrate the observed thermal limits of the dominant and ubiquitous meat ant Iridomyrmex purpureus across climate (aridity), land cover and land use gradients spanning 270 km in length and 840 m in altitude across northern New South Wales, Australia. Meat ants were chosen for study as they are ecosystem engineers and changes in their populations may result in a cascade of changes in the populations of other species. When we assessed critical thermal maximum temperatures (CTmax) of meat ants in relation to the environmental gradients we found little influence of climate (aridity) but that CTmax decreased as LUI increased. We found no overall correlation between CTmax and CTmin. We did however find that tolerance to warming was lower for ants sampled from more arid locations. Our findings suggest that as LUI and aridification increase, the physiological resilience of I. purpureus will decline. A reduction in physiological resilience may lead to a reduction in the ecosystem service provision that these populations provide throughout their distribution.
英文关键词	Formicidae Climate change Landscape adaptation Land cover Land use Thermal stress Critical thermal maximum Critical thermal minimum Insect Ant
类型	Article
语种	英语
国家	Australia
开放获取类型	gold, Green Submitted, Green Published
收录类别	SCI-E
WOS记录号	WOS:000455373100005
WOS关键词	CLIMATE-CHANGE ; IRIDOMYRMEX-PURPUREUS ; HEAT-STRESS ; ANT ; TEMPERATURE ; RESPONSES ; TOLERANCE ; BIODIVERSITY ; HYMENOPTERA ; POPULATIONS
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217892
作者单位	1.Univ New England, Sch Environm & Rural Sci, Armidale, NSW, Australia; 2.Univ New England, Sch Sci & Technol, Armidale, NSW, Australia; 3.Off Environm & Heritage, Armidale, NSW, Australia
推荐引用方式 GB/T 7714	Andrew, Nigel R.,Miller, Cara,Hall, Graham,et al. Aridity and land use negatively influence a dominant species' upper critical thermal limits[J],2019,6.
APA	Andrew, Nigel R.,Miller, Cara,Hall, Graham,Hemmings, Zac,&Oliver, Ian.(2019).Aridity and land use negatively influence a dominant species' upper critical thermal limits.PEERJ,6.
MLA	Andrew, Nigel R.,et al."Aridity and land use negatively influence a dominant species' upper critical thermal limits".PEERJ 6(2019).