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Funded Project
Funding Program: Integrated Pest Management Competitive Grants Program
Project Title: Sudden Oak Death: Prevent and Prepare Project
Project Directors (PDs):
Brendan Twieg [1]
Earl Crosby [2]
Tanya Chapple [3]
Lead State: CA

Lead Organization: Mid Klamath Watershed Council
Undesignated Funding: $30,000
Start Date: Mar-01-2017

End Date: Mar-01-2018
Pests Involved: Phytophthora ramorum
Summary: The mid-Klamath has been the home of the Karuk Tribe since time immemorial, the area is at high risk of Phytophthora ramorum (sudden oak death, SOD) infestation via anthropogenic and natural spread. The Karuk homelands are comprised of forests with high frequency and abundance of research-supported pathogen hosts—tanoak (Notholithocarpus densiflorus) and California bay laurel (Umbellularia californica). Oregon Department of Forestry recently estimated that the disease can travel three to five miles per year without human aid if left untreated. Currently, there are treatments in the two nearest infestations to help slow the disease, but their efficacy to slow the rate of spread is unknown. Even if this rate is reduced by 50%, it will take a maximum of nine years until the pathogen arrives.
The communities of the mid-Klamath need to take action to prevent and prepare for the introduction of SOD now. Tanoak acorns are one of the main staples of local tribes, and their significance goes beyond this fact to being central to ceremony and spiritual purification. The high mortality suffered by tanoak due to SOD will have catastrophic effects on food supply for humans and animals and further endanger the culture of the people. Furthermore, mortality of tanoak by sudden oak death would also exacerbate an already critical regional problem with high forest fuel loads and increase risks of high severity fires, which have become much more frequent over the past few decades.
Outreach and implementation funding from the Western Integrated Pest Management Center will allow for the Mid Klamath Watershed Council and the Karuk Tribe to outreach to the community and prepare a response to this devastating pathogen.

Objectives: 1. Prevent SOD establishment through Education and Outreach. Increased education and outreach to the local community is essential to prevent human caused introduction of SOD to the mid-Klamath.

2. Monitor for SOD Occurrence. The Karuk Tribe DNR initiated a stream bait monitoring program in 2016, in collaboration with UC Cooperative Extension and UC Davis, focusing on two major fish-bearing creeks passing through susceptible forests in the part of Karuk territory closest to the closest known infestation. The effort will be continued and expanded during the project duration. In addition, vegetative samples will be taken and on the ground surveys of high risk areas, shown by vegetation modeling, will be conducted in the spring and summer of 2017. Community volunteers will also be solicited at workshops to be watchful for and collect symptomatic vegetation, if encountered, for testing.

3. Rapid Response Plan. Working closely with collaborating partners and informed by forest inventory information and disease spread models, the Project Director will draft a management action plan that prioritizes the types of management activities for prevention and mitigation, e.g. targeted host removal/thinning and prescribed fire, and ranks areas for treatment according to the quality and quantity of their cultural resources. The Rapid Response Plan will include a protocol to help determine under what circumstances (e.g., maximum infestation size in terms of acreage and trees affected) a local eradication attempt should be made, how extensive such treatments should be, and what kind of activities would be warranted on adjacent lands. Additionally, this plan will incorporate NEPA/CEQA requirement considerations. Finally, this plan will identify funding sources for both preventive and response treatments.



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