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2009 "Volunteers Working With Invasives"
Grants Report Form

Display Report


Project Title: Community-Based Restoration and Monitoring of Marin Islands Native Flora
Region: 8
Station: Marin Islands NWR
Contact Person:
Name and Phone Number
Giselle Block 707-769-4200
Project Description:
(Up to 250 words)
Project Description: The Marin Islands National Wildlife refuge (refuge) was established in 1993 to protect and enhance wildlife and associated habitats. Vegetation of the refuge is dominated by non-native trees and shrubs and they continue to spread over native vegetation. Much of the non-native flora was introduced in the 1900’s by the Crowley family (previous owner). Realization of the refuges’ native vegetation and habitat potential will require substantial reduction of its non-native tree cover, removal of non-native and invasive species, and management of remnant native vegetation stands to limit impacts of naturalized non-native weeds. A vegetation management plan (plan) for the refuge was developed in 2005 to describe and analyze the nature and regional context of native and non-native vegetation and to provide scientifically sound prescriptions for management and restoration of native vegetation. Implementation of the plan has been challenging given the island setting and limited refuge resources. Work that has occurred includes control and monitoring of “highly invasive” species (e.g., French broom, Italian thistle). We would like to expand our current work. Hence, goals of this project are to: 1. Baseline assessment of rare plant species 2. Collect, prepare and store plant specimens for inclusion in the U. C. Berkeley Jepson Herbaria 3. Eradicate priority invasive species: jubata grass (Cortaderia jubata), ivy (Hedera helix), Bermuda buttercup (Oxalis pes-caprae) 4. Monitor eradication efforts 5. Seed invasive plant removal areas with MINWR seed source (collection and amplification of seeds)
List of Invasives Species Targeted:Common NameScientific Name
  jubata grass Cortaderia jubata
ivy Hedera helix
Bermuda buttercup Oxalis pes-caprae
Project Status: InProgress
Project Completion Date
or Estimated Completion Date:


Volunteer Affiliation:
(Check all that apply)
VA_FriendsGrp                                 VA_Other
Volunteer Involvement:
Describe the type of work the volunteers performed. (Up to 150 words)
Total Number of Volunteers:
Total Number of Volunteer Hours:
List both new and existing partnerships utilized in this project. (Up to 150 words).


Project Results:
Give an overview of the results of the project. Include quantifiable measure of success, such as maps produced, efficacy of control measures, number of sites where invasions were detected early and responded to, number of community contacts, etc. (Up to 250 words).
Number of Acres Treated:
Number of Acres Inventoried and/or Mapped:
Number of Acres Restored:


Budget: Account for funds in broad categories such as equipment, volunteer stipends, travel, coordinator salary/contract, etc.

Total Grant Amount:


Breakdown of Expenditures:


Total $ Spent
% of Total Grant
Equipment / Supplies
Biocontrol Agents
Volunteer Stipends
Volunteer Coordinator Salary/Contract
Restoration Materials

Recommendations: (OPTIONAL)
How useful was this program for meeting refuge invasive species objectives and how can it be improved?


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