It is well recognized that disturbance increases the probability of invasive species establishment. This study examined the relationship between burn severity level and invasive species. Sixty-four plots, stratified by burn severity level and landscape position (riparian vs. upland), were sampled in the 2003 Tuolumne burn during the summer of 2006. The abundance of invasives increased with increased burn severity level, however, this relationship was not significant. There was a significantly higher abundance of invasives in riparian areas compared to upland areas. The riparian data were analyzed and the abundance of invasives increased with severity. This relationship was not significant. A pruned classification tree showed that low percent cover of rock and a large change in basal area were the most predictive ecosystem variables predicting presence of invasives. While the overall abundance of invasives was low, this research demonstrates that there is a relationship between invasive species abundance and burn severity.Wildfire burn patterns and riparian vegetation response along two northern Sierra Nevada streams. Forest Ecology and Management ... The ESRI Guide to GIS Analysis Volume 2: Spatial Measurements aamp; Statistics. ESRI Press, Redlands, CA.
|Title||:||Invasive Species in Wilderness as a Function of Burn Severity: A Case Study in Yosemite National Park, California|
|Author||:||Kristen Mannix Kaczynski|
|Publisher||:||ProQuest - 2007|