Biodiversity and Forest Structure at George Lake PSP

Data from a permanent sampling plot (PSP) in central Alberta (Canada). All live and dead stems with DBH > 1.0 cm were identified and mapped within a 1 Ha (100m x 100m) plot. The plot was subdivided into 25 non-overlapping subplots (20m x 20m) and stem data summarized at this level. In addition, from each of these 25 subplots, biodiversity data (ground-dwelling spiders and carabid beetles, foliage-dwelling spiders, and understory vascular plants) were collected. The data consists of six spreadsheets. The first sheet contains univariate summaries of forest structure for each subplot (live and dead stem density and basal area, and in three DBH classes: DBH1: 1.0-4.9 cm; DBH2: 5-20 cm; DBH3: > 20 cm). The second sheed contains multivariate summaries of forest structure for each subplot (live and dead stem density and basal area by species). The remaining sheets contain raw abundances (ground-dwelling spiders and carabid beetles, and foliage-dwelling spiders) or percent cover (understory vascular plants) for species collected and/or observed in each of the 25 subplots