Understanding interaction effects of climate change and fire management on bird distributions through combined process and habitat models

Conservation Biology
By: , and 

Links

Abstract

Avian conservation efforts must account for changes in vegetation composition and structure associated with climate change. We modeled vegetation change and the probability of occurrence of birds to project changes in winter bird distributions associated with climate change and fire management in the northern Chihuahuan Desert (southwestern U.S.A.). We simulated vegetation change in a process-based model (Landscape and Fire Simulator) in which anticipated climate change was associated with doubling of current atmospheric carbon dioxide over the next 50 years. We estimated the relative probability of bird occurrence on the basis of statistical models derived from field observations of birds and data on vegetation type, topography, and roads. We selected 3 focal species, Scaled Quail (Callipepla squamata), Loggerhead Shrike (Lanius ludovicianus), and Rock Wren (Salpinctes obsoletus), that had a range of probabilities of occurrence for our study area. Our simulations projected increases in relative probability of bird occurrence in shrubland and decreases in grassland and Yucca spp. and ocotillo (Fouquieria splendens) vegetation. Generally, the relative probability of occurrence of all 3 species was highest in shrubland because leaf-area index values were lower in shrubland. This high probability of occurrence likely is related to the species' use of open vegetation for foraging. Fire suppression had little effect on projected vegetation composition because as climate changed there was less fuel and burned area. Our results show that if future water limits on plant type are considered, models that incorporate spatial data may suggest how and where different species of birds may respond to vegetation changes.
Publication type Article
Publication Subtype Journal Article
Title Understanding interaction effects of climate change and fire management on bird distributions through combined process and habitat models
Series title Conservation Biology
DOI 10.1111/j.1523-1739.2011.01684.x
Volume 25
Issue 3
Year Published 2011
Language English
Publisher Society for Conservation Biology
Publisher location Washington, D.C.
Contributing office(s) National Wetlands Research Center
Description 11 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Conservation Biology
First page 536
Last page 546
Country United States
Other Geospatial Chihuahuan Desert
Google Analytic Metrics Metrics page
Additional publication details