Invasive Plant Mapping

Invasive plant mapping is especially important for tracking expanding populations. Here yellow toadflax (Linaria vulgaris) finds its way to higher altitudes in the Sierra.
Photo: Bob CaseMapping invasive plants is an important part of strategic planning for effective management efforts. It aids selection of the highest priority locations, tracking progress over time, and detecting new locations.

Regional mapping efforts, like the one undertaken jointly by Shasta, Siskiyou, Lassen, Modoc and Humboldt counties, can result in landscape scale assessments of invasive plant populations. Their northern California weed map (3MB PDF) marks core and satellite populations of CDFA noxious weeds over the region.

For background information on mapping invasive plants, reference the California Weed Mapping Handbook. The handbook includes data standards, tools, and techniques.

The invasive plant mapping page of the California Invasive Plant Council is updated to include information useful to those in the field.

The National Biological Information Infrastructure (NBII) provides access to biological resources data throughout the country. The NBII Invasive Species Information Node provides invasive plant maps and mapping resources, and the California node is run out of UC Davis. Additionally, NBII has created a useful National Framework for Early Detection, Rapid Assessment, and Rapid Response to Invasive Species.