globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13092
论文题名:
Rapid warming and drought negatively impact population size and reproductive dynamics of an avian predator in the arid southwest
作者: Cruz-Mcdonnell K.K.; Wolf B.O.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期:1
起始页码: 237
结束页码: 253
语种: 英语
英文关键词: Athene cunicularia ; Body condition ; Burrowing Owl ; Delayed breeding ; Nest success ; Population declines ; Precipitation ; Prey abundance
Scopus关键词: air temperature ; aridity ; body condition ; drought ; global warming ; nesting success ; population decline ; population size ; predator ; raptor ; United States ; Athene cunicularia ; Aves ; Speotyto cunicularia ; animal ; body weight ; climate change ; drought ; female ; male ; nesting ; New Mexico ; owl ; physiology ; population density ; reproduction ; season ; sexual behavior ; temperature ; Animals ; Body Weight ; Climate Change ; Droughts ; Female ; Male ; Nesting Behavior ; New Mexico ; Population Density ; Reproduction ; Seasons ; Sexual Behavior, Animal ; Strigiformes ; Temperature
英文摘要: Avian communities of arid ecosystems may be particularly vulnerable to global climate change due to the magnitude of projected change for desert regions and the inherent challenges for species residing in resource limited ecosystems. How arid-zone birds will be affected by rapid increases in air temperature and increased drought frequency and severity is poorly understood because avian responses to climate change have primarily been studied in the relatively mesic northern temperate regions. We studied the effects of increasing air temperature and aridity on a Burrowing Owl (Athene cunicularia) population in the southwestern United States from 1998 to 2013. Over 16 years, the breeding population declined 98.1%, from 52 pairs to 1 pair, and nest success and fledgling output also declined significantly. These trends were strongly associated with the combined effects of decreased precipitation and increased air temperature. Arrival on the breeding grounds, pair formation, nest initiation, and hatch dates all showed significant delays ranging from 9.4 to 25.1 days over 9 years, which have negative effects on reproduction. Adult and juvenile body mass decreased significantly over time, with a loss of 7.9% mass in adult males and 10.9% mass in adult females over 16 years, and a loss of 20.0% mass in nestlings over 8 years. Taken together, these population and reproductive trends have serious implications for local population persistence. The southwestern United States has been identified as a climate change hotspot, with projections of warmer temperatures, less winter precipitation, and an increase in frequency and severity of extreme events including drought and heat waves. An increasingly warm and dry climate may contribute to this species' decline and may already be a driving force of their apparent decline in the desert southwest. © 2016 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61549
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Biology, University of New Mexico, Albuquerque, NM, United States; Envirological Services, Inc., Albuquerque, NM, United States

Recommended Citation:
Cruz-Mcdonnell K.K.,Wolf B.O.. Rapid warming and drought negatively impact population size and reproductive dynamics of an avian predator in the arid southwest[J]. Global Change Biology,2016-01-01,22(1)
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