Theses and Dissertations - UTB/UTPA
The brood-rearing habitat, brood home range, and fecundity of the snowy plover (Charadrius alexandrinus) in coastal southern Texas
Date of Award
Master of Science (MS)
Dr. Timothy Brush
Dr. Frank W. Judd
Dr. Robert I. Lonard
Habitat fragmentation has been shown to have negative effects on avian communities. I looked at the effects of corridor width and vegetation characteristics on nesting densities and breeding success of birds in the Lower Rio Grande Valley. There were definite trends in this study of increasing species richness and nesting densities with increasing corridor widths. Multiple regression revealed little correlation between tree density, diameter at breast height, tree height, canopy cover and ground cover with nesting density or nesting success. However, factors such as parasitism by the Bronzed Cowbird (Molothrus aeneus) and predation were much greater in narrower corridors. This study indicates that present corridors are too narrow and that Lower Rio Grande riparian forest and its avian community are reverting to drier mixed forest.
University of Texas-Pan American
Copyright 1997 Jeffery R. Rupert. All Rights Reserved.