Predicting Breeding-bird Occurrences in Oklahoma: Relationship of Species Distributions to Land-cover and Climatic Variation
- ISBN-10
- 1109986882
- ISBN-13
- 9781109986884
- Category
- Birds
- Pages
- 118
- Language
- English
- Published
- 2007
- Author
- Dennis G. Siegfried
Description
It is of practical interest to know the amount of data required to produce reliable models. I developed nine training sets of from 50 to 450 sites for each species to predict occurrence in a 100-site test set. Model performance was determined by the reduction in error of prediction (tau-p) compared to the null. On average, model performance leveled off after 300 sites.
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