Nest-site resources for cavity-nesting birds in the southern Allegheny Mountain forests of West Virginia.

摘要

Cavity-nesting birds may be negatively impacted by a lack of proper nesting sites. Southern Allegheny Mountain forests of West Virginia are unique due to the juxtaposition and diversity of forest cover types. Management must focus on monitoring wildlife population levels as well as habitat requirements within each cover type. Cavity tree abundance significantly differed among central hardwood (x¯ = 16.4; SE = 5.3), northern hardwood (x¯ =12.7; SE = 6.8), and boreal forest cover types (x¯ = 7.2; SE = 3.6) ( P 0.0001). Black locust (Robinia pseudoacacia) and American beech (Fagus grandifolia) were most likely to have tree cavities, yet beech may be influenced by increased mortality from recent outbreaks of beech bark disease initiated by the beech scale insect (Cryptacoccus fagisuga). Nesting bird community density, richness, and abundance do not differ among mature forests of the 3 cover types. Cavity-nesting species dependent on available tree holes were found most in the central hardwoods (P = 0.009). Forest managers should consider landscape level effects, as well as forest stand composition, when recommending silvicultural treatments.