Abstract
![]() A Sampling Scheme for Peirson's Milk-Vetch in the Algodones Dunes Track: Ecology and Conservation Author(s): Fran Evanisko Peirson's Milk-Vetch is an endangered plant species that occurs on the Algodones Dunes in the Imperial Valley of California. John Willoughby, a BLM botanist, devised a systematic random sampling design for monitoring the occurrence of the plant over time. The sampling is stratified by 12 sample areas within eight management areas. The design requires 135 transects with a total length of 930 km and 37,169 sample points 25 meters apart. This paper will discuss the algorithm used to generate the sampling scheme and the code required to implement the design in both AML and ArcObjects. The two methods are compared in terms of complexity and performance. Fran Evanisko Bureau of Land Management and American River College 5600 Marconi Ave ## 207 Carmichael , CA 95608 US Phone: 916.978.4351 E-mail: franevanisko@sbcglobal.net |