Arid
DOI10.1642/AUK-13-253.1
Drought-caused delay in nesting of Sonoran Desert birds and its facilitation of parasite- and predator-mediated variation in reproductive success
McCreedy, Chris1; van Riper, Charles, III2
通讯作者McCreedy, Chris
来源期刊AUK
ISSN0004-8038
EISSN1938-4254
出版年2015
卷号132期号:1页码:235-247
英文摘要

As our understanding of climate change has increased, so has our awareness of the impacts of these changes on biotic systems. Climate models are nearly unanimous in their predictions for increased drought frequency in southwestern North America, and delays in nest initiation due to drought may influence nesting success and productivity for many Sonoran Desert bird species. In southeastern California and western Arizona in 2004-2009, we found negative correlations for 13 of 13 species between nest initiation date and rainfall accumulation during the preceding 4-month winter rainy season. Nesting was delayed more than 3 weeks for some species during extreme droughts in 2006 and 2007. During 2004-2009, we found a significant negative effect of nest initiation date on nest survival probability ((beta) over cap = -0.031 +/- 0.005 SE, P < 0.001) for the four species of greatest sample size. To investigate the role of nesting delay in nesting success and productivity, in 2010 we conducted a manipulative experiment with Black-tailed Gnatcatchers (Polioptila melanura; BTGN) and Verdins (Auriparus flaviceps; VERD). Following a wet winter, we delayed clutch initiation dates for treatment pairs to match first-egg dates that we observed during droughts in 2006 and 2007. Nest initiation date had a significant negative effect on nest survival of both species (BTGN: <(beta)over cap> = -1.18 +/- 0.27 SE, P < 0.001; VERD: <(beta)over cap> = -2.33 +/- 0.51 SE, P = 0.003). Treatment pairs were unable to overcome the lost period of high productivity in March and early April, and had lower productivity than control pairs over the entire breeding season. As nest predation and Brown-headed Cowbird (Molothrus ater) parasitism were the most common causes of nest failure, we conclude that the impacts of climate change-caused drought on annual reproductive output in the Sonoran Desert will be further compounded by parasitism and predation for Black-tailed Gnatcatchers and by predation for Verdins.


英文关键词climate change late breeding laying date nesting delay passerine nest survival Brown-headed Cowbird Verdin Black-tailed Gnatcatcher
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000347799300021
WOS关键词CLIMATE-CHANGE ; LONG-TERM ; NORTH-AMERICA ; POPULATION ; SPARROW ; DATE ; COMMUNITIES ; GALAPAGOS ; SELECTION ; ARIZONA
WOS类目Ornithology
WOS研究方向Zoology
来源机构University of Arizona ; United States Geological Survey
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/186146
作者单位1.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA;
2.US Geol Survey, Southwest Biol Sci Ctr, Sonoran Desert Res Stn, Tucson, AZ USA
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McCreedy, Chris,van Riper, Charles, III. Drought-caused delay in nesting of Sonoran Desert birds and its facilitation of parasite- and predator-mediated variation in reproductive success[J]. University of Arizona, United States Geological Survey,2015,132(1):235-247.
APA McCreedy, Chris,&van Riper, Charles, III.(2015).Drought-caused delay in nesting of Sonoran Desert birds and its facilitation of parasite- and predator-mediated variation in reproductive success.AUK,132(1),235-247.
MLA McCreedy, Chris,et al."Drought-caused delay in nesting of Sonoran Desert birds and its facilitation of parasite- and predator-mediated variation in reproductive success".AUK 132.1(2015):235-247.
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