Interim definitions for old growth Douglas-fir and mixed-conifer forests in the Pacific Northwest and California.

J.F. Franklin; F. Hall; W. Laudenslayer; C. Maser; J. Nunan; J. Poppino; C. John Ralph; T. Spies

doi:10.2737/PNW-RN-447

Treesearch

Interim definitions for old growth Douglas-fir and mixed-conifer forests in the Pacific Northwest and California.

Informally Refereed

Authors:

J.F. Franklin, F. Hall, W. Laudenslayer, C. Maser, J. Nunan, J. Poppino, C. John Ralph, T. Spies

Year:

1986

Type:

Research Note

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RN-447

Source:

Res. Note PNW-RN-447. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 15 p.

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Abstract

Interim definitions of old-growth forests are provided to guide efforts in land-management planning until comprehensive definitions based on research that is currently underway can be formulated. The basic criteria for identifying old-growth Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and mixed-conifer forests in western Washington and Oregon and California are given.

Keywords

Old growth, old-growth stands, mixed stands, Coniferae, Pacific North-west, California

Citation

Franklin, J.F.; Hall, F.; Laudenslayer, W.; Maser, C.; Nunan, J.; Poppino, J.; Ralph, C.J.; Spies, T. 1986. Interim definitions for old growth Douglas-fir and mixed-conifer forests in the Pacific Northwest and California. Res. Note PNW-RN-447. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 15 p.