DESIGN CONSIDERATIONS FOR EXAMINING TRENDS IN AVIAN ABUNDANCE USING POINT COUNTS: EXAMPLES FROM OAK WOODLANDS

@inproceedings{Purcell2005DESIGNCF,
  title={DESIGN CONSIDERATIONS FOR EXAMINING TRENDS IN AVIAN ABUNDANCE USING POINT COUNTS: EXAMPLES FROM OAK WOODLANDS},
  author={Kathryn L. Purcell and Sylvia R. Mori and Mary K. Chase},
  year={2005}
}
Abstract We used data from two oak-woodland sites in California to develop guidelines for the design of bird monitoring programs using point counts. We used power analysis to determine sample size adequacy when varying the number of visits, count stations, and years for examining trends in abundance. We assumed an overdispersed Poisson distribution for count data, with overdispersion attributed to observer variability, and used Poisson regression for analysis of population trends… CONTINUE READING

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