California Naturalist
California Naturalist
California Naturalist
University of California
California Naturalist

Community Science for CA Naturalists

Welcome to our ongoing effort to catalog citizen science and other public participation in scientific research (PPSR) projects for UC California Naturalists and other citizen scientists.  We invite you to browse the listed projects or enter key words (like birds, youth, invasive, coast, Alameda, etc.) in the search box above to find projects in your area. It's a great way to stay involved and keep developing your skills as a natural scientist!

A vast majority of the information in the database was gathered from project websites and may be out of date. We encourage you to contact projects directly to get involved and learn about most recent opportunities. If you work with a listed project and would like to add to, update, or correct the information we have, please email Also, please consider filling out the "PPSR perspectives" survey. Click here to access the survey, which will help guide this project in the coming year.

If you know of a project not on our list, please go to the "tell us about a project" link on the left so we can list the project here. Thanks for your help!

Special thanks goes to the National Science Foundation Informal Science Education program and the Stephen J. Bechtel, Jr. Foundation for supporting this database of projects.

 Project Name Weed Watcher - Martin Griffin Preserve
 Organization Name Audubon Canyon Ranch
 Project Website
 Organization Website
 Contact Name Matthew Danielczyk, Invasive Plant Specialist
 Contact Email
 Contact Phone 707-888-9190
 Project Purpose (taken from project materials) To discover weeds before they become well-established and thereby protect Audubon Canyon Ranch’s unique natural resources; To deepen volunteer understanding of the natural world. 

 Participant Activities Weed Watchers hike the Martin Griffin Preserve and map new sitings of invasive plant species.

 Data Entry Unknown
 Other Participant Activities Other education and conservation initiatives of the organization.

 System Studied Invasive Species
 Geographic Scope Local
 Region Marin
 Location Martin Griffin Preserve near Stinson Beach
 Location - Map 4900 Shoreline Highway One Stinson Beach, CA 94970
 Time Commitment Monthly
 Volunteer Qualifications No prior experience necessary. 

 How will the findings be used? Project has helped establish the Marin Sonoma Weed Management Area Group and the Bay Area Early Detection Network.

 Other Information The Weed Watchers go out on the second Saturday of each month. Contact project lead to rsvp.

The Weed Watchers volunteer program works within ACR’s Early Detection and Rapid Response Invasive Plant Management Program. 

If you work with this project and would like to add to or update the information below, please email

If you know of a project not on our list, please go to the "tell us about a project" link on the left so we can list the project here. Thanks for your help!

This database is focused on projects in California focused on the environment. For opportunities outside California, as well as national projects that don't have a California-specific components, check

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