Evaluation of Five Methods for Measuring Desert Vegetation
Wildlife Society Bulletin
We obtained a complete census of vegetation in a 30- × 1,900-m plot in the Sonoran Desert (Tumamoc Hill, Pima County, Ariz.). We then evaluated the accuracy of 5 sampling techniques commonly used to sample vegetation in deserts: step-point, point-quarter, and 3 line-intercept methods. We compared presence and percent occurrence for each method with the census. The line-intercept (method 3) most closely estimated the census: it was closer for all species occurring on >1% of the site, revealed the least variability relative to sample size for dominant species, and accounted for more (20 of 23) plant species on the study site than the other methods.
ETCHBERGER, R. C. and P. R. KRAUSMAN. 1997. Evaluation of five methods for measuring desert vegetation. Wildl. Soc. Bull. 25:604-609.