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Estimators of Fruit Abundance of Tropical Trees
Colin A. Chapman, Lauren J. Chapman, Richard Wangham, Kevin Hunt, Daniel Gebo and Leah Gardner
Vol. 24, No. 4 (Dec., 1992), pp. 527-531
Published by: Association for Tropical Biology and Conservation
Stable URL: http://www.jstor.org/stable/2389015
Page Count: 5
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Many types of biological studies require the estimation of food abundance in tropical forests, and a variety of methods have been used to estimate this parameter. Here we compare the accuracy and precision of three methods for estimating the fruit abundance (biomass and number) of tropical tree species: tree diameter, crown volume, and visual estimation. Diameter at breast height (DBH) was the most consistently accurate method and exhibited low levels of interobserver variability. Generally, crown volume was neither precise nor accurate. The visual estimation method was accurate for trees with very large fruit, but exhibited high interobserver variability
Biotropica © 1992 Association for Tropical Biology and Conservation