Optimizing the duration of point counts for monitoring trends in bird populations /
Minute-by-minute analysis of point counts of birds in mixed-conifer forests in the Sierra National Forest, central California, showed that cumulative counts of species and individuals increased in a curvilinear fashion but did not reach asymptotes after 10 minutes of counting. Comparison of the expe...
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| Format: | Government Document Book |
| Language: | English |
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Berkeley, Calif. :
U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station,
1988
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| Series: | Research note PSW ;
395 |
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