CDFW News | Help protect California's biodiversity during Invasive Species Action Week

Help protect California's biodiversity during Invasive Species Action Week

Preventing harmful impacts from non-native plants and animals protects California's biodiversity—the state is home to more species than any other state in the union. The California Department of Fish and Wildlife's (CDFW) California Invasive Species Action Week (CISAW), Saturday, June 1, through Sunday, June 9, 2024, educates the public and calls them to take action to protect California's natural resources, ecology, and economy.

Daydre Roser, a scientist in the CDFW Invasive Species Program, urges all Californians to get involved because “invasive species reduce the biodiversity that is so important to our landscape.”

Across the state this week, volunteers will remove invasive plants, there will be interactive activities, a series of educational webinars and the announcement of the winner of the 2024 Youth Art Contest, among other events. The theme of this year's Youth Art Contest was “Species Reporters Wanted – What's New on Invasive Species?”

CDFW staff will join CISAW's efforts and work with the American River Parkway Foundation to assist in the eradication of non-native plants along the American River in Sacramento.

Virtual and in-person opportunities to participate in CISAW include:

  • Learn about the wildlife of Coyote Creek at Anderson Lake County Park in Morgan Hill on June 1 as part of Santa Clara County Parks' Coyote Creek Habitat Day.
  • Join the University of California Cooperative Extension's Lunchtime Talks webinar series, where experts will discuss invasive species issues every weekday, such as the tree-killing woodworm beetle spreading through the Bay Area or the threat posed by yellow star thistle, considered by some to be the state's most invasive plant.
  • Volunteer to help members of the Milo Baker Chapter of the California Native Society as they work in Bodega Bay on Wednesday, June 5, and Sunday, June 9, to remove the South African Ice Plant, once used for erosion control along the California coast.
  • Join the League to Save Lake Tahoe for the “Eyes on the Lake” training on Thursday, June 6. Participants will learn how to distinguish native from non-native aquatic plants and how to report aquatic invaders that are damaging Lake Tahoe’s ecosystem.
  • Join members of the American River Parkway Foundation's Invasive Plant Patrol on Friday, June 7, to eradicate non-native plants along the American River Parkway in Sacramento.
  • Learn about the invasive quagga mussel at the East Bay Regional Park District on Saturday, June 8. Interactive activities at Shadow Cliffs Regional Recreation Area in Pleasanton will demonstrate the impacts of quagga mussel in California lakes and how to prevent infestations.
  • Join the Cosumnes River Preserve Habitat Restoration Team at the Cosumnes River Preserve in Galt on Saturday, June 8, for a day of conservation focused on protecting California live oak riparian habitat along the Cosumnes River Basin.

Further details and a full list of CISAW events can be found online. Some of these events require advance registration.

Support efforts to remove invasive species and restore habitat for wildlife year-round by volunteering with the California State Parks Foundation and other local organizations, or by reporting invasive species to iNaturalist and/or CDFW's Invasive Species app (via EDDMaps).

Californians can also help stop the spread of invasive species by taking small, everyday actions such as landscaping with native plants, not releasing unwanted pets into the wild, and cleaning, emptying, and drying equipment when around bodies of water. The CISAW website lists simple actions Californians can take year-round when visiting natural areas, boating, fishing, or staying at home.

The mission of the CDFW Invasive Species Program is to reduce the impacts of invasive species on California's wildlife and waterways. The program is involved in efforts to prevent the introduction of these species into the state, detect and respond to introductions when they occur, and prevent the spread of those species that are already established. If you have questions or for more information about CISAW, contact


Media contacts:
Krysten Kellum, CDFW Communications, (916) 825-7120
Daydre Roser, CDFW Invasive Species Program, (916) 720-1226

Anna Harden

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