Trophic structure of bird communities in forest patches in east- central Illinois.

Abstract:

Small forests were dominated by omnivores that frequently foraged in surrounding farmland. Foliage insectivores, primarily Neotropical migrants, were uncommon in smaller forests, but comprised the largest component of bird communities in large forests. Species totals in major trophic groups were significantly correlated with area in all years. Highest correlations were observed for foliage insectivores and bark insectivores. The former group had the highest slope, indicating the most rapid increase in species number with area, a reflection of the increase in number of long-distance migrants in larger forests. Abundances of both foliage and bark insectivores were strongly correlated with area. Omnivores were more common than expected in small forests. Ground insectivores and bark insectivores were more common than expected in large forests. Foliage insectivores were underrepresented over the entire range of forest size. -from Author

Año de publicación:

1983

Keywords:

Fuente:

scopus