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UCCE Highlights

Stream Monitoring Detects New Sudden Oak Death Sites

Monitoring streams and rivers is one of the most widely used and efficient methods for detecting P. ramorum, and it continues to be an important tool for tracking the pathogen at the margins of the infestation in the North Coast. Thanks to the collaboration of numerous community, tribal, private, state, and federal groups and agencies, 99 stream sites are monitored annually from February through May for P. ramorum in Humboldt and Del Norte (with one site in northern Mendocino), making the North Coast the most intensively monitored region in California. Brendan Twieg and Dan Stark continue to survey the region's streams and forests, and to map the extent of the infested areas of the North Coast. These maps are publicly available and specialized maps may be requested to suit your specific needs.