Plant biomass dynamics following logging, burning, and thinning in Watersheds 6 and 7, Andrews Experimental Forest, 1979 to present

In 1974, Watershed 6 was clearcut and watershed 7 was shelterwood cut for the purposes of 1) comparing volume growth for the residual stand after shelterwood harvest with pretreatment growth and concurrent growth of a nearby stand, 2) comparing survival and height growth of both planted and natural regeneration on the clearcut and shelterwood watersheds, and 3) correlating seedling survival and height growth with amount of light (canopy density estimate), competition from lesser vegetation, type of seedbed material, and soil-air interface temperatures on watersheds 6 and 7. In the fall of 2001, WS7 was thinned to 220 trees per acre. This study includes vegetation measurements taken in the summer of 2002 in watersheds 6 and 7 for the purpose of characterizing plant succession after thinning in a small, high-elevation watershed.