Snag Densities In Old Growth Stands On The Gasquet Ranger District Six Rivers National Forest California PDF Download
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Author | : Thomas Michael Jimerson |
Publisher | : |
Total Pages | : 20 |
Release | : 1989 |
Genre | : Forest management |
ISBN | : |
Download Snag Densities in Old-growth Stands on the Gasquet Ranger District, Six Rivers National Forest, California Book in PDF, ePub and Kindle
Baseline levels for densities of snags (standing dead trees) wered etermined in undisturbed old-growth stands on the Gasquet Ranger District. Six Riven National Forest, California. Snag species, number, diameter at breast height (d.b.h.), height, cavity type, cavity use, decay class, and snag origin were recorded on 317 plots over a 2-year period. The 2121 snags recorded consisted of Pseudotsuga menziesii (36 percent), Abies concolor (29 perecnt), Abics mgnifica var. sharlemis (7 percent), Pinus lambertiana (4 percent), Chamaecyparis lawsonina (6 percent), hardwoods (10 percent), and other conifers combined (7 percent). Snags were categorized as large, medium or small. Large snags were characterized as snags 2 20 inches d.b.h. and 2 5 0 feet tall, the medium snags as snags 220 inches d.b.h. and 20-50 feet tall and the small snags as all other snags> 5 inches d.b.h. and 1 foot tall that did not qualify as large or medium snags. The snag densities for each category were then determined for each of the following conifer series: Lithocarpus densiforalPseudotsuga menziesii, Chamaecyparis lawsomina, Abies concolor and the Abies magnifica var. shastensis. The snag densities for all four series combined in each category were 2.07 large snags/acre, 1.94 medium snags/acre and 20.67 small snags/acre.
Author | : Thomas M. Jimerson |
Publisher | : |
Total Pages | : 12 |
Release | : 1989 |
Genre | : |
ISBN | : |
Download Snag Densities in Old-growth Stands on the Gasquet Ranger District, Six Rivers National Forest, California Book in PDF, ePub and Kindle
Author | : Thomas M. Jimerson |
Publisher | : |
Total Pages | : 12 |
Release | : 1989 |
Genre | : |
ISBN | : |
Download Snag Densities in Old-growth Stands on the Gasquet Ranger District, Six Rivers National Forests, California Book in PDF, ePub and Kindle
Author | : Philip M. McDonald |
Publisher | : |
Total Pages | : 796 |
Release | : 1980 |
Genre | : Clearcutting |
ISBN | : |
Download Seed Dissemination in Small Clearcuttings in North-central California Book in PDF, ePub and Kindle
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.
Author | : |
Publisher | : |
Total Pages | : 310 |
Release | : 1994 |
Genre | : |
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Download Coos Bay District Area Resource(s) Management Plan (RMP) Book in PDF, ePub and Kindle
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Total Pages | : |
Release | : 1992-04 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalog of United States Government Publications Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 404 |
Release | : 1990 |
Genre | : Natural history |
ISBN | : |
Download Wildlife Review Book in PDF, ePub and Kindle
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Publisher | : |
Total Pages | : 882 |
Release | : 1992-04 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalogue, United States Public Documents Book in PDF, ePub and Kindle
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Publisher | : |
Total Pages | : 1120 |
Release | : 1990 |
Genre | : Agriculture |
ISBN | : |
Download Bibliography of Agriculture Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 88 |
Release | : 1993 |
Genre | : Forests and forestry |
ISBN | : |
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