Tree regeneration after fire: Effects of burn severity, CPCRW soil analysis

This study examines the effects of burn severity on patterns of post-fire tree establishment in the boreal forest. We collected data from 5 separate field experiments examining seedling establishment across different severity levels in 4 burns in central Yukon Territory, Canada, and interior Alaska, USA. The experimental studies focus on the germination, survival, and growth responses of four common tree species, trembling aspen (Populus tremuloides), lodgepole pine (Pinus contorta), white spruce (Picea glauca) and black spruce (Picea mariana). Data on the soil organic layer (depth, moisture, bulk density, pH) were also collected at each site. This file contains more detailed data on organic soil measurements for the site at CPCRW. Data are included from 3 measurement dates: 4 August 2000 (org. depth and pH) 23 July 2001 (org. depth, soil wet and dry weights, pH) 16 July 2002 (org. depth, sample volume, soil wet and dry weights) Dry weights were obtained following drying in an oven for 48 hourse at 40-60 degrees C.