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Relationships Between Avian Diversity And Vegetational Parameters In Forested Patches Of The Tualatin Mountains, Oregon, Jerry Sexton Fugate
Relationships Between Avian Diversity And Vegetational Parameters In Forested Patches Of The Tualatin Mountains, Oregon, Jerry Sexton Fugate
Dissertations and Theses
The effect of contiguous forested habitat area on local avian diversity and species richness in the Tualatin Mountain area of northwestern Oregon was investigated. Observations of eight forested stands representing seven area values (1, 2, 7, 14, 18, 24 and 40 hectares) were made during the spring and summer of 1991 and 1992. The variables measured were chosen in an attempt to show possible relationships between vegetation factors, spatial patterns and bird communities. Kendall's rank correlation coefficients were used to analyze the data. Avian species richness and diversity were significantly correlated with forest stand (patch) size. The only significant correlation …