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Population Dynamics Of Dwarf Mistletoe On Young True Firs In The Central Sierra Nevada California
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Book Synopsis Population Dynamics of Dwarf Mistletoe on Young True Firs in the Central Sierra Nevada, California by : Robert F. Scharpf
Download or read book Population Dynamics of Dwarf Mistletoe on Young True Firs in the Central Sierra Nevada, California written by Robert F. Scharpf and published by . This book was released on 1982 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Young red firs (Abies magnifica A. Murr.) and white firs (A. concolor [Gord. & Glend.] Lindl. ex Hildebr.) on the Stanislaus National Forest, California, were inoculated with seeds of dwarf mistletoe (Arceuthobium abietinum) for 5 successive years. Only 3 to 4 percent of about 7000 seeds placed on branches resulted in infections. Second-generation infections developed and populations of the parasite built up on some trees but not on others after 17 years. Variables that appeared to regulate population increases included an 8- to 9-year average between inoculation and fruiting of plants, low rate of fruit production among female plants, low proportion of plants producing abundant fruit (100 or more/year), and irregular production of fruit on plants over the years, Death of infected branches also helped keep populations of the parasite in check. In vigorous, well-managed stands of young firs, dwarf mistletoe populations may not build up rapidly enough to result in serious losses.
Book Synopsis Silvics of North America: Conifers by : Russell M. Burns
Download or read book Silvics of North America: Conifers written by Russell M. Burns and published by . This book was released on 1990 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silvics of North America written by and published by . This book was released on 1990 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Silvics of North America by : Russell M. Burns
Download or read book Silvics of North America written by Russell M. Burns and published by . This book was released on 1990 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agriculture Handbook written by and published by . This book was released on 1996 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Set includes revised editions of some issues.
Book Synopsis Forested Communities of the Upper Montane in the Central and Southern Sierra Nevada by : Donald A. Potter
Download or read book Forested Communities of the Upper Montane in the Central and Southern Sierra Nevada written by Donald A. Potter and published by . This book was released on 1998 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seed Dissemination in Small Clearcuttings in North-central California by : Philip M. McDonald
Download or read book Seed Dissemination in Small Clearcuttings in North-central California written by Philip M. McDonald and published by . This book was released on 1980 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a 1964-1967 study on the Challenge Experimental Forest, seedfall was evaluated in 2-, 5-, and 10-acre circular clearcuttings. During the 4 years, 10 seed crops, ranging from light to bumper, were produced by ponderosa pine. white fir, Douglas-fir, and incense cedar. Seedfall ranged from 76 to 40,691 sound seed per acre (188 to 100,547/ha) for a single species in a given year. From 89 to 100 percent of each species' seed fell within an area 1 1/2 times the height of the average dominant tree. Overall, seed distribution was highly variable.
Book Synopsis Fir Dwarf Mistletoe by : Gregory M. Filip
Download or read book Fir Dwarf Mistletoe written by Gregory M. Filip and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dwarf Mistletoe in Red and White Firs in California--23 to 28 Years After Inoculation by : J. R. Parmeter
Download or read book Dwarf Mistletoe in Red and White Firs in California--23 to 28 Years After Inoculation written by J. R. Parmeter and published by . This book was released on 1989 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Publications Quarterly List written by and published by . This book was released on 1985 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plumas National Forest (N.F.), Watdog Project by :
Download or read book Plumas National Forest (N.F.), Watdog Project written by and published by . This book was released on 2005 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report PSW. written by and published by . This book was released on 1978 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the Conference on Coastal Watersheds by :
Download or read book Proceedings of the Conference on Coastal Watersheds written by and published by . This book was released on 1998 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dwarf Mistletoes by : Frank G. Hawksworth
Download or read book Dwarf Mistletoes written by Frank G. Hawksworth and published by . This book was released on 1996 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plumas National Forest (N.F.), Slapjack Project by :
Download or read book Plumas National Forest (N.F.), Slapjack Project written by and published by . This book was released on 2006 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Note PSW. written by and published by . This book was released on 1978 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research for Tomorrow's Forests by :
Download or read book Research for Tomorrow's Forests written by and published by . This book was released on 1984 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
