No abstract

Schmid, J.M; Mata, S. A. 1996. Natural variability of specific forest insect populations and their associated effects in Colorado.

Analysis of data from seven specimens revealed a composite fire interval in ponderosa pine of 2.4 years from 1745 to 1876 (122 years), a shorter interval than previously reported. In all cases, composite fire intervals were shorter than individual specimen intervals.

Flood-Plain Zone 1 (Very shallow water table-0-4 ft) Flood-Plain Zone 2 (Shallow water table-4-8 ft) Flood-Plain Zone 3 (Medium water table-8-20 ft) Flood-Plain Zone 4 (Deep water tablebelow 20 ft)

A dense, immature ponderosa pine stand was thinned in 1962, 1972, and 1982 to six growing stock levels (30, 60, 80, 100, 120, and 150). Except for height, average tree growth characteristics (diameter, crown length, and width) were negatively correlated with residual stand density. Stand basal area and volume increment were positively related to stand density.