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Drought and cooler temperatures are associated with higher nest survival in Mountain Plovers

July 27, 2012

Native grasslands have been altered to a greater extent than any other biome in North America. The habitats and resources needed to support breeding performance of grassland birds endemic to prairie ecosystems are currently threatened by land management practices and impending climate change. Climate models for the Great Plains prairie region predict a future of hotter and drier summers with strong multiyear droughts and more frequent and severe precipitation events. We examined how fluctuations in weather conditions in eastern Colorado influenced nest survival of an avian species that has experienced recent population declines, the Mountain Plover (Charadrius montanus). Nest survival averaged 27.2% over a 7-yr period (n = 936 nests) and declined as the breeding season progressed. Nest survival was favored by dry conditions and cooler temperatures. Projected changes in regional precipitation patterns will likely influence nest survival, with positive influences of predicted declines in summer rainfall yet negative effects of more intense rain events. The interplay of climate change and land use practices within prairie ecosystems may result in Mountain Plovers shifting their distribution, changing local abundance, and adjusting fecundity to adapt to their changing environment.

Citation Information

Publication Year 2012
Title Drought and cooler temperatures are associated with higher nest survival in Mountain Plovers
DOI 10.5751/ACE-00519-070106
Authors V.J. Dreitz, R.Y. Conrey, S. K. Skagen
Publication Type Article
Publication Subtype Journal Article
Series Title Avian Conservation and Ecology
Series Number
Index ID 70038077
Record Source USGS Publications Warehouse
USGS Organization Fort Collins Science Center

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