. Regeneration outlook on BLM lands in the Siskiyou Mountains. DF TF H OC SP & WWP IC PP. H OC SP & WWP IC TF PP Figure 12.—Douglas-fir was dominant on a majority of stocked subplots. Species Abundance In this survey, the presence or absence of seedlings was determined rather than the total number. Because each subplot was searched for individual species, however, some insight on stand mixtures can be gained from the stocking data. Species mixtures were common in all areas, but their makeup differed somewhat by area and harvest m
. Regeneration outlook on BLM lands in the Siskiyou Mountains. DF TF H OC SP & WWP IC PP. H OC SP & WWP IC TF PP Figure 12.—Douglas-fir was dominant on a majority of stocked subplots. Species Abundance In this survey, the presence or absence of seedlings was determined rather than the total number. Because each subplot was searched for individual species, however, some insight on stand mixtures can be gained from the stocking data. Species mixtures were common in all areas, but their makeup differed somewhat by area and harvest method. More than half the stocked subplots in Applegate partial cuts and Applegate and Galice-Glendale clearcuts contained a single species; elsewhere, a majority of subplots contained more than one species (table 1). About one-third of all stocked subplots contained two species and 16 per- cent contained three or more species (fig. 13). Up to six species were found on single subplots in Evans clearcuts and partial cuts. Widespread intermixture of species provides opportunities for flexible management of the developing stand. Presence of more than one species also provides direct evidence that many subplots were stocked with more than one tree. Combining data from all cutovers sampled, 51 percent of the stocked subplots had more than one conifer species. The percentage of subplots that had more than one conifer of any species was undoubtedly much higher. 17. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stein, William I. cn; Pacific Northwest Research Station (Portland, Or. ) cn; United States. Bureau of Land Management. cn. [Portland, Or. ] : U. S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
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