| Bassett, Boyce, Reiser, Graham, Reynolds | R.L., D.A., M.H., R.T., R.T. | Influence of site quality and stand density on goshawk habitat in southwestern forests. | 1994 | In The Northern Goshawk: Ecology and Management. W. M. Block, M. L. Morrison, and M. H. Reiser (eds.). Proc. Symp. Cooper Ornith. Soc., 14-15 April 1993, Sacramento, CA. Studies in Avian Biology. 16:41-45 |
Influence of site quality and stand density on goshawk habitat in southwestern forests-Abstract
Richard L Bassett, Douglas A Boyce, Jr., M Hildegard Reiser, Russell T Graham, and Richard T ReynoldsCurrent management guidelines for the northern goshawk (Accipiter gentilis) in the Southwest call for a mosaic habitat consisting of approximately 10 percent of the forest area in grass-forb/shrubs, 10 percent in 2.5-12.7 cm trees, 20 percent in 12.7-30.5 cm trees, 20 percent in 30.5-45.7 cm trees, 20 percent in 4.57-61.0 cm trees, and 20 percent in 61.0 cm or greater trees. This habitat mosaic was conceived as convenient categories to describe a generally balanced, ecologically sustainable, forest ecosystem. In reality, however, the vegetative structural percentages vary greatly. We describe how differences in site quality and stand density affect vegetative structural stage percentage and forest age.