Abstract
To determine the relationship between bird biodiversity and succession, we recorded the presence and approximate numbers of breeding diurnal bird species on plots representing secondary vegetation succession in an area classified as the very dry, hot subzone of the Interior Douglas-fir Biogeoclimatic Zone: grass, shrub, young conifer, and mature Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco)–ponderosa pine (Pinusponderosa Dougl. ex Laws.) forest. The number of species and individual birds increased with the successional age of plots, but young conifer plots had fewer bird species and individual birds than the preceding shrub stage. That is, succession produced peaks in bird biodiversity at the shrub and climax stages. All successional stages, with the exception of young conifer, possessed unique bird species or species found predominantly in that successional stage.
Published Version
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