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Rob Sparks, Rocky Mountain Bird Observatory USA
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2015 Conference Paper: Presentation -pdf Video -mp4
"A Multiscale View of Shortgrass Prairie Bird Abundance and Distribution"
Presenter: Rob Sparks, Nature Conservancy
Session: Remote Sensing Methods for Critical Habitat Modelling II
ABSTRACT: "We developed hierarchical models for McCown’s Longspur and Loggerhead Shrike in the Colorado Shortgrass Prairie Bird Conservation Region (BCR). We extended a generalized multinomial mixture model to estimate abundance, availability and detection probability using 4 years of data from the Integrated Monitoring in Bird Conservation Regions (IMBCR) program. Our objectives were to (1) model landscape effects of habitat, (2) model the effects of local vegetation and (3) predict the distribution of the species. At the landscape scale there was strong support for percent grass cover in the top model for both species. The relationship between percent grass cover and abundance
