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Distribution and abundance of snags in the Sagehen Creek Basin, California

Author: Michael L Morrison; Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
Publisher: Berkeley, Calif. : U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1986.
Series: Research note PSW, 389.
Edition/Format:   Print book : National government publication : EnglishView all editions and formats
Database:WorldCat
Summary:
The distribution of snags by tree species in the eastern Sierra Nevada of California generally reflects the associated timber type. Where present, however, lodgepole pine (Pinus conrorta Dougl.) forms a large proportion of the snags present. Few snags of any species were present in the Jeffrey pine (P. jeffrryi Grev. & Balf. in A. Murr.) timber type in a study at Sagehen Creek Basin, in Nevada County. Simple  Read more...
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Additional Physical Format: Online version:
Distribution and abundance of snags in the Sagehen Creek Basin, California.
Berkeley, Calif. : U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1986
(OCoLC)624401756
Material Type: Government publication, National government publication, Internet resource
Document Type: Book, Internet Resource
All Authors / Contributors: Michael L Morrison; Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
OCLC Number: 16393496
Notes: Caption title.
Distributed to depository libraries in microfiche.
"November 1986."
Description: 4 pages ; 28 cm.
Series Title: Research note PSW, 389.
Responsibility: Michael L. Morrison [and others].

Abstract:

The distribution of snags by tree species in the eastern Sierra Nevada of California generally reflects the associated timber type. Where present, however, lodgepole pine (Pinus conrorta Dougl.) forms a large proportion of the snags present. Few snags of any species were present in the Jeffrey pine (P. jeffrryi Grev. & Balf. in A. Murr.) timber type in a study at Sagehen Creek Basin, in Nevada County. Simple regression analysis showed weak but significant relationships between snag density and canopy height, canopy cover, and slope. Multiple regression analysis were also weak, but revealed that snag density increased as size of natural openings increased. These results indicate that most snags in the study area were formed by the action of water (i.e., meadows, creeks) and fire. Thus, managers could concentrate snag surveys (and protective measures) near water and natural openings. Management of riparian areas is especially important because such areas are usually readily accessible to the public (e.g., fuelwood cutters). Aerial photography should be useful in locating areas of highest snag density; regression analysis appears to be of marginal usefulness.

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