干旱区生态环境知识资源中心(Arid): Cooling requirements fueled the collapse of a desert bird community from climate change

Arid

DOI	10.1073/pnas.1908791116
	Cooling requirements fueled the collapse of a desert bird community from climate change
	Riddell, Eric A.1; Iknayan, Kelly J.1,2; Wolf, Blair O.3; Sinervo, Barry 4; Beissinger, Steven R.1,2
通讯作者	Riddell, Eric A.
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN	0027-8424
出版年	2019
卷号	116 期号:43 页码:21609-21615
英文摘要	Climate change threatens global biodiversity by increasing extinction risk, yet few studies have uncovered a physiological basis of climate-driven species declines. Maintaining a stable body temperature is a fundamental requirement for homeothermic animals, and water is a vital resource that facilitates thermoregulation through evaporative cooling, especially in hot environments. Here, we explore the potential for thermoregulatory costs to underlie the community collapse of birds in the Mojave Desert over the past century in response to climate change. The probability of persistence was lowest for species occupying the warmest and driest sites, which imposed the greatest cooling costs. We developed a general model of heat flux to evaluate whether water requirements for evaporative cooling contributed to species' declines by simulating thermoregulatory costs in the Mojave Desert for 50 bird species representing the range of observed declines. Bird species' declines were positively associated with climate-driven increases in water requirements for evaporative cooling and exacerbated by large body size, especially for species with animal-based diets. Species exhibiting reductions in body size across their range saved up to 14% in cooling costs and experienced less decline than species without size reductions, suggesting total cooling costs as a mechanism underlying Bergmann's rule. Reductions in body size, however, are unlikely to offset the 50 to 78% increase in cooling costs threatening desert birds from future climate change. As climate change spreads warm, dry conditions across the planet, water requirements are increasingly likely to drive population declines, providing a physiological basis for climate-driven extinctions.
英文关键词	thermoregulation climate change desert birds evaporative cooling Bergmann's rule
类型	Article
语种	英语
国家	USA
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000491366700043
WOS关键词	HEAT RESTING METABOLISM ; BODY-SIZE ; AVIAN THERMOREGULATION ; GRANIVOROUS BIRDS ; WATER ECONOMY ; TEMPERATURE ; BEHAVIOR ; TOLERANCE ; MODEL ; PHYSIOLOGY
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
EI主题词	2019-10-22
来源机构	University of California, Berkeley
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310331
作者单位	1.Univ Calif Berkeley, Museum Vertebrate Zool, Berkeley, CA 94720 USA; 2.Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA; 3.Univ New Mexico, Dept Biol, Albuquerque, NM 87106 USA; 4.Univ Calif Santa Cruz, Dept Ecol & Evolutionary Biol, Santa Cruz, CA 95060 USA
推荐引用方式 GB/T 7714	Riddell, Eric A.,Iknayan, Kelly J.,Wolf, Blair O.,et al. Cooling requirements fueled the collapse of a desert bird community from climate change[J]. University of California, Berkeley,2019,116(43):21609-21615.
APA	Riddell, Eric A.,Iknayan, Kelly J.,Wolf, Blair O.,Sinervo, Barry,&Beissinger, Steven R..(2019).Cooling requirements fueled the collapse of a desert bird community from climate change.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(43),21609-21615.
MLA	Riddell, Eric A.,et al."Cooling requirements fueled the collapse of a desert bird community from climate change".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.43(2019):21609-21615.