Factors Influencing Home-Range Size of Swainson's Warblers in Eastern Arkansas

The condor

Nicholas M. Anich¹ 

关键词: bottomland hardwood forest;    habitat use;    home-range size;    Limnothlypis swainsonii;    space use;    Swainson's Warbler;   

DOI  :  10.1525/cond.2010.080103

学科分类：动物科学

来源: Central Ornithology Publication Office

【 摘 要 】

Abstract. Understanding factors affecting space-use patterns can lead to improved knowledge of the ecology and habitat needs of a species. We radiotracked 37 male Swainson's Warblers (Limnothlypis swainsonii) at two sites in eastern Arkansas, White River National Wildlife Refuge, a bottomland site, and St. Francis National Forest, a site with birds in both bottomlands and uplands. We found substantial variation in home-range size and evaluated habitat and nonhabitat predictors of home-range size by information-theoretic techniques. We also evaluated how breeding phase affected home-range size. Several habitat variables were good predictors of home-range size, including understory density, vine-stem density, and other stem-density variables. Overall, vine-stem density and understory density were the best predictors of home-range size, and nonhabitat factors were poor predictors. A three-variable model including density of giant cane (Arundinaria gigantea), vine, and shrub stems as separate variables was a ...

【 授权许可】

CC BY