ICE Vegetation Ecologist Ingrid Hogle will present ongoing invasive species research at the following:
18th Annual Meeting
Society for Conservation Biology
July 30th to August 2nd, 2004 - New York, New York, USA
Her poster presentation is based on the following abstract:
SPATIAL ANALYSIS OF PERENNIAL PEPPERWEED INFESTATION IN A SEASONAL FLOODPLAIN
Ingrid B. Hogle, Joshua H. Viers, James F. Quinn, Mark W. Schwartz, Becky Waegell, Kaylene Keller
Rapid on-going expansion of Lepidium latifolium (perennial pepperweed) populations threatens to create vegetation monocultures in riparian and wetland habitats throughout California. Understanding site characteristics that promote spread of Lepidium latifolium can help resource managers target and prioritize areas for weed control and future habitat restoration.
We are developing a site-specific, GIS-based model that can be used to identify and examine correlations between rate of Lepidium latifolium spread, hydrological characteristics, disturbance regime and existing plant community types.
Two years of monitoring Lepidium latifolium on a recently restored seasonal floodplain at the Cosumnes River Preserve in Sacramento County indicate that elevation, size of last year's population, and distance to nearest disturbance vector (road or levee breach) all affect change in stem numbers per patch. These physical and environmental site characteristics are being used to assess future infestation risk and to target areas for management.
