Alaska Bird ObservatoryAlaska Bird ObservatoryPaton, Peter W. C. and Stephen K. Springer. 1997. Monitoring landbirds in Denali National Park utilizing on-road and off-road point counts. Annual Report to the Nat. Park Service.
Point count techniques were utilized to monitor breeding birds in Denali National Park and Preserve, Alaska, from 1993-1997. Birds were surveyed from nine off-road routes in spruce forests, and from four on-road routes in a variety of habitats from 1993-1997. A total of 45 species were detected during the off-road censuses, with species richness ranging from 26-32 species annually. Relative abundance of most species was similar among years during the off-road censuses. The cumulative number of species detected from 1993-1997 during the four on-road routes were 69, 70, 61, and 74 respectively,. The on-road routes that exhibit greater species richness have a wider variety of habitat types within them. Inter-annual variation in population trends was similar between on-road and off-road censuses. The abundance of rare species, which occurred at <2% of all counting stations, fluctuated among years. In contrast, populations of species that were common exhibited little inter-annual variation.
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