Author: George T. FerrellPublisher:
ISBN:
Category : Abies concolor
Languages : en
Pages : 24
Book Description
Growth Classification Systems for Red Fir and White Fir in Northern California
Author: George T. FerrellPublisher:
ISBN:
Category : Abies concolor
Languages : en
Pages : 24
Book Description
Growth Classification Systems for Red Fir and White Fir in Northern California
Author: George T. FerrellPublisher:
ISBN:
Category : Abies concolor
Languages : en
Pages : 18
Book Description
Risk-rating Systems for Mature Red Fir and White Fir in Northern California
Author: George T. FerrellPublisher:
ISBN:
Category : Abies concolor
Languages : en
Pages : 36
Book Description
Ten-year Risk-rating Systems for California Red Fir and White Fir
Author: George T. FerrellPublisher:
ISBN:
Category : Abies concolor
Languages : en
Pages : 20
Book Description
Ten-year Risk-rating Systems for California Red Fir and White Fir
Author: George T. FerrellPublisher:
ISBN:
Category : Abies concolor
Languages : en
Pages : 18
Book Description
Ten-year Risk-rating Systems for California Red Fir and White Fir
Author: George T. FerrellPublisher:
ISBN:
Category : Abies concolor
Languages : en
Pages : 177
Book Description
Treatment Duration and Time Since Disturbance Affect Vegetation Development in a Young California Red Fir Plantation
Author: Philip M. McDonaldPublisher:
ISBN:
Category : Abies magnifica
Languages : en
Pages : 24
Book Description
Resource values in analyzing fire management programs for economic efficiency
Author: Irene A. AlthausDwarf Mistletoe in Red and White Firs in California--23 to 28 Years After Inoculation
Author: J. R. ParmeterPublisher:
ISBN:
Category : Abies concolor
Languages : en
Pages : 6
Book Description
Spread and buildup of dwarf mistletoe, Arceuthobiun abietinum, was studied on inoculated white fir, Abies concolor, and red fir, A. magnifica, in northern Califomia for 23 to 28 years. At the end of these studies (1986), and in the absence of overstory infection, 13 of 23 trees had dwarf mistletoe populations that were the same or smaller than the original populations resulting from inoculation. Mortality of infections was the main factor limiting population increases. Live crown ratio of all trees averaged over 0.8. The average ratio of tree height growth to vertical spread rate of dwarf mistletoe was 11.5 to 1 in white fir and 7 to 1 in red fir in the Sierra Nevada. In the southem Cascades, the average ratio was 1.7 to 1 in red fir. About one fourth of the trees became infected in the bole. Of 14 additional trees infected by lateral spread of the parasite, 13 were within 6 m of the source of infection. Evidence continues to indicate that losses from dwarf mistletoes will be small in well-managed young fir stands free from infected overstory trees and properly spaced to promote good growth.
Growth of California Red Fir Advance Regeneration After Overstory Removal and Thinning
Author: William W. OliverPublisher:
ISBN:
Category : Abies magnifica
Languages : en
Pages : 12
Book Description
Advance regeneration is common under decadent, old-growth stands of California red fir (Abies magnifica A. Murr.). Intense competition for the site's resources can create sapling stands of poor vigor and advanced age. When competition is reduced by overstory removal and thinning, suppressed advance regeneration has been shown to respond with increased growth. But, to select leave trees, land managers need to know which tree characteristics we associated with growth after release and thinning. This paper reports those easily measured tree characteristics found to be most closely associated with growth after 8 years, on the Swain Mountain Experimental Forest in northeastern California.