Microbial populations associated with the major substrates of the
canopy of a 70 m old-growth Douglas fir were studied to determine
potential activities. Seasonal samples from bark, foliage, epiphytic
moss, lichens, and litter accumulations were collected to i) obtain
population data, ii) to isolate the major groups of microorganisms
present,...
Postfire logging recoups the economic value of timber killed by wildfire, but whether such forest management activity supports or impedes forest recovery in stands differing in structure from historic conditions remains unclear. The aim of this study was to determine the impact of mechanical logging after wildfire on soil bacterial...
Chemical and microbial soil properties were assessed in paired unfertilized and urea fertilized (>89 g N·m–2) plots in 13 second-growth Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands distributed throughout western Washington and Oregon. A decade following the termination of fertilization, fertilized plots averaged 28% higher total N in the O layer...