Getting to the Point: Accuracy of Point Count in Monitoring Ecosystem Change
Box-and-whisker plots of values resulting from the comparison of true ( between 5 and 30%; ) and estimated benthic cover (1 to 50 points per frame), based on 500 replicate simulations. The value (-axis) represents the probability that the distributions of estimated and true percent cover have the same location (Wilcoxon test). Horizontal line: statistical significance level (). Above this line are plotted simulations for which there was not a statistically significant difference between true and estimated cover distributions. Below it, there was a significant difference between true and estimated cover, based on the Wilcoxon test.
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