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pro vyhledávání: '"Eric G. Nolte"'
Publikováno v:
Avian Conservation and Ecology, Vol 11, Iss 2, p 9 (2016)
Annual counts of migrating raptors at fixed observation points are a widespread practice, and changes in numbers counted over time, adjusted for survey effort, are commonly used as indices of trends in population size. Unmodeled year-to-year variatio
Externí odkaz:
https://doaj.org/article/cf8657a683ac4776ac7c8a4738e03b51
Publikováno v:
Avian Conservation and Ecology, Vol 11, Iss 2, p 9 (2016)
Annual counts of migrating raptors at fixed observation points are a widespread practice, and changes in numbers counted over time, adjusted for survey effort, are commonly used as indices of trends in population size. Unmodeled year-to-year variatio