Influence of Number and Spacing of Points on Accuracy and Precision of Basal Cover Estimates

Abstract

Records from 350 line intercept transects from a foothill bunchgrass range were sampled systematically and at random with 25, 50, and 100 points per line. Statistical analyses were made to compare point densities, point placement, and their interactions for 12 plant categories. Sod-forming species were sampled best by random placement, bunch-grasses by systematic placement, and for plant groups with high basal cover either placement would suffice.