Vulnerability of shortgrass prairie bird assemblages to climate change

By: , and 
Edited by: Lekha Knuffman

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Abstract

The habitats and resources needed to support grassland birds endemic to North American prairie ecosystems are seriously threatened by impending climate change. To assess the vulnerability of grassland birds to climate change, we consider various components of vulnerability, including sensitivity, exposure, and adaptive capacity (Glick et al. 2011). Sensitivity encompasses the innate characteristics of a species and, in this context, is related to a species’ tolerance to changes in weather patterns. Groundnesting birds, including prairie birds, are particularly responsive to heat waves combined with drought conditions, as revealed by abundance and distribution patterns (Albright et al. 2010). To further assess sensitivity, we estimated reproductive parameters of nearly 3000 breeding attempts of a suite of prairie birds relative to prevailing weather. Fluctuations in weather conditions in eastern Colorado, 1997-2014, influenced breeding performance of a suite of avian species endemic to the shortgrass prairie, many of which have experienced recent population declines. High summer temperatures and intense rain events corresponded with lower nest survival for most species. Although dry conditions favored nest survival of Burrowing Owls and Mountain Plovers (Conrey 2010, Dreitz et al. 2012), drought resulted in smaller clutch sizes and lower nest survival for passerines (Skagen and Yackel Adams 2012, Conrey et al. in review). Declining summer precipitation may reduce the likelihood that some passerine species can maintain stable breeding populations in this region of the shortgrass prairie.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Vulnerability of shortgrass prairie bird assemblages to climate change
Year Published 2016
Language English
Publisher National Wildlife Federation
Contributing office(s) Fort Collins Science Center
Description 2 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title America's Grasslands Conference: Partnerships for Grassland Conservation
First page 100
Last page 101
Conference Title America's Grasslands Conference: Partnerships for Grassland Conservation
Conference Location Fort Collins, CO
Conference Date September 29- October 1, 2015