VEGETATION COMPOSITION INFLUENCES AVIAN SPECIES DISTRIBUTIONS IN THE POST OAK SAVANNAH ECOREGION OF NORTHEAST TEXAS.

Autor: Cantrell, Jamie L., Pogue, Darrell W., Williams, Lance R., McCumber, Jacob C., Placyk Jr., John S.
Zdroj: Texas Journal of Science; Aug-Nov2011, Vol. 63 Issue 3/4, p163-182, 20p
Abstrakt: Species conservation has become a topic of global concern, and determining which factors influence habitat choice by bird species is a high priority, particularly in fragmented landscapes. This study examines the influence of habitat characteristics on avian communities in the post oak savannah of northeast Texas. Twenty-one sites, representing four different habitat types, were surveyed for this work. Species richness, diversity, evenness, and dominance of bird communities were not significantly different among sites that were dominated by different vegetation types, or between sites with or without roads. However, species' relative abundances were significantly explained by site vegetative composition. This study indicates the importance of multivariate, landscape-level analyses in explaining avian community composition, as opposed to smaller-scale, univariate, local analyses. Management implications are discussed for avian communities in the post oak savannah. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index