Environmental Management

, Volume 17, Issue 6, pp 773–779

Stand density index applied to timber and goshawk habitat objectives in Douglas-fir

Authors

  • Robert J. Lilieholm
    • Department of Forest ResourcesUtah State University
  • Winifred B. Kessler
    • USDA Forest Service
  • Karren Merrill
    • USDA Forest Service
Research

DOI: 10.1007/BF02393898

Cite this article as:
Lilieholm, R.J., Kessler, W.B. & Merrill, K. Environmental Management (1993) 17: 773. doi:10.1007/BF02393898

Abstract

Silvicultural guidelines are presented for the management of intermountain Douglas-fir (Pseudotsuga menziesii) stands for sawtimber production and goshawk (Accipiter gentilis) nesting habitat in the northern Rocky Mountains. Data from 14 goshawk nest stands in Douglas-fir forests on the Targhee National Forest in Idaho (Patla 1991) were used to characterize the range of stand conditions considered suitable for goshawk nesting. A density management regime is presented using Reineke's stand density index that includes a technical rotation designed to produce sawlogs with a single commercial thinning. On average timber-growing sites, stands reach goshawk habitat suitability when site height is 25 m at age 75 and provide 65 years of goshawk nesting habitat until the final harvest at age 140. Approximately 1320 m3/ha are harvested over the rotation. On higher-quality sites, rotation length declines from 140 to 85 years, of which roughly 35 years are suitable for goshawk nesting.

Key words

GoshawkAccipiter gentilisDouglas-firPseudotsuga menziesiiMulti-resource managementReineke's stand density indexThinningTimber managementWildlife

Copyright information

© Springer-Verlag New York Inc 1993