Influence of site quality and stand density on goshawk habitat in southwestern forests

Richard L. Bassett; Douglas A. Boyce; M. Hildegard Reiser; Russell T. Graham; Richard T. Reynolds

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Influence of site quality and stand density on goshawk habitat in southwestern forests

Formally Refereed

Authors:

Richard L. Bassett, Douglas A. Boyce, M. Hildegard Reiser, Russell T. Graham, Richard T. Reynolds

Year:

1994

Type:

Scientific Journal

Station:

Rocky Mountain Research Station

Source:

Studies in Avian Biology. 16: 41-45.

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Abstract

Current 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 45.7-61.0 cm trees, and 20 percent in 61.0 cm and 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. We describe how differences in site quality and stand density affect vegetative structural stage percentage and forest age.

Keywords

Accipiter gentilis, forest regulation, Northern goshawk, site quality, stand density, SDI, vegetative structural stages

Citation

Bassett, Richard L.; Boyce, Douglas A., Jr.; Reiser, M. Hildegard; Graham, Russell T.; Reynolds, Richard T. 1994. Influence of site quality and stand density on goshawk habitat in southwestern forests. Studies in Avian Biology. 16: 41-45.