Seed dissemination in small clearcuttings in north-central California

Philip M. McDonald

doi:10.2737/PSW-RP-150

Treesearch

Seed dissemination in small clearcuttings in north-central California

Informally Refereed

Authors:

Philip M. McDonald

Year:

1980

Type:

Research Paper

Station:

Pacific Southwest Research Station

DOI:

https://doi.org/10.2737/PSW-RP-150

Source:

Res. Paper PSW-RP-150. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture; 5 p

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Download (PDF 579 KB): https://research.fs.usda.gov/download/treesearch/28821.pdf

Abstract

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 lOO,547/ha) for a single species in a given year. From 89 to 100 percent of each species' seed fell within an area 1½ times the height of the average dominant tree. Overall, seed distribution was highly variable.

Keywords

seed production, seed dispersal, clearcutting, Pinus ponderosa, Libocedrus decurrens, Pseudotsuga menziesii, Abies concolor, Challenge Experimental Forest

Citation

McDonald, Philip M. 1980. Seed dissemination in small clearcuttings in north-central California. Res. Pap. PSW-RP-150. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 5 p.