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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 expected number of individuals counted per hour with various combinations of counting time and noncounting times for record keeping and travel between counting stations showed that 10-minute counts were most efficient in most cases. Counting longer than 10 minutes is not recommended, because other increased risk of double counting some individuals.
Book Synopsis Optimizing the Duration of Point Counts for Monitoring Trends in Bird Populations by : Jared Verner
Download or read book Optimizing the Duration of Point Counts for Monitoring Trends in Bird Populations written by Jared Verner and published by . This book was released on 1988 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 expected number of individuals counted per hour with various combinations of counting time and noncounting times for record keeping and travel between counting stations showed that 10-minute counts were most efficient in most cases. Counting longer than 10 minutes is not recommended, because other increased risk of double counting some individuals.
Point counts of birds are the most widely used quantitative method and involve an observer recording birds from a single point for a standardized time period. In response to the need for standardization of methods to monitor bird populations by census, researchers met to present data from various investigations working under a wide variety of conditions, and to examine various aspects of point count methodology. Statistical aspects of sampling and analysis were discussed and applied to the objectives of point counts. The final chapter presents these standards and their applications to point count methodology.
Book Synopsis Monitoring Bird Populations by Point Counts by : C. John Ralph
Download or read book Monitoring Bird Populations by Point Counts written by C. John Ralph and published by DIANE Publishing. This book was released on 1998-05 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Point counts of birds are the most widely used quantitative method and involve an observer recording birds from a single point for a standardized time period. In response to the need for standardization of methods to monitor bird populations by census, researchers met to present data from various investigations working under a wide variety of conditions, and to examine various aspects of point count methodology. Statistical aspects of sampling and analysis were discussed and applied to the objectives of point counts. The final chapter presents these standards and their applications to point count methodology.
Book Synopsis Monitoring Bird Populations by Point Counts by :
Download or read book Monitoring Bird Populations by Point Counts written by and published by . This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Book Synopsis Monitoring Bird Populations by Point Counts by :
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Book Synopsis Optimum Timeframes for Detecting Songbird Vocalizations in the Black Hills by : Todd R. Mills
Download or read book Optimum Timeframes for Detecting Songbird Vocalizations in the Black Hills written by Todd R. Mills and published by . This book was released on 1998 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monitoring Bird Populations by Point Counts by : John R. Sauer
Download or read book Monitoring Bird Populations by Point Counts written by John R. Sauer and published by Wildlife Research Group. This book was released on 1998-01-01 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
