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Abstract
Using GIS to Estimate Threatened Sunflower DistributionsTrack: Ecology, Archaeology, and Conservation
Author(s): Stephen Castlebury Brown, Oscar William Van Auken
Raster GIS (ArcView with the ArcView Spatial Analyst extension) was used to model community distributions and changes in populations of the threatened Puzzle Sunflower in the northern Chihuahuan Desert. This presentation will demonstrate how GIS can be used to streamline and enhance the process of estimating plant distributions from sampling transects. Participants will learn how a GIS analysis can reveal community changes that, without a GIS, would ordinarily be very difficult to detect. Because the flower is a threatened species, revealing its location could be detrimental. A method for creating GIS data that is not tied to real-world coordinates will also be demonstrated.
Stephen Castlebury Brown
University of Texas at San Antonio
6900 N. Loop 1604 West
San Antonio, TX 78249
USA
Phone: 210-458-4956
Fax: 210-458-4469
E-mail: sbrown@utsa.edu