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2021 Invasive Lunch

2021 California Invasive Action Week, June 7th-11th

green crab from cal ag paper

Join us for a scrumptious line-up focused on things YOU can do! Bring your own lunch!

Want to learn more about how ANR researchers Ted Grosholz, Bea Nobua-Behrman, and Sabrina Drill are working with community scientists to investigate and manage invasive species? Check out our special issue of California Agriculture! 

Webinars are free, but registration is required for each day. You can find the link to register just below the presenter information. 

Monday, June 7th

Community Science to Manage Green Crabs

learn from Dr. Ted Grosholz, Alexander and Elizabeth Swantz Specialist, UC ANR and UC Davis Environmental Science and Policy

For a deep dive into this work, read and follow links in “When ‘Eradicated’ Species Bounce Back with a Vengeance”

Watch the video here!

Non-native invasive pests threatened coastal ecosystems worldwide. Managing these pests requires considerable effort and resources, and community scientists can be essential for providing the capacity needed. In response to the invasion of a Northern California estuary by the predatory European green crab, listed among the world’s 100 worst invaders, a collaborative team of academic researchers and community scientists initiated a local eradication program. The program dramatically reduced the green crab population over a 5-year period, but it rebounded, which necessitated a switch in project goals from eradication to population suppression. Community scientists were essential to quantify population characteristics and maintain reduced crab populations.

Tuesday June 8th

Weeds After Wildfire and What YOU Can Do to Help!

Joey Algiers_Working in the post-fire environment_Woolsey Fire 2018
join Joey Algiers, Restoration Ecologist at the Santa Monica Mountains National Recreation Area, and Andrea Williams, Director of Biodiversity Initiatives, California Native Plant Society

Watch the video here!

The Santa Monica Mountains suffered a wildfire in 2018 that burned close to half of the mountain range and 88% of its National Park Service (NPS) land. Joseph Algiers will describe how the NPS has been controlling weeds that threaten native recovery in burn areas in the most demanding and ambitious local invasive plant control project to date. Early Detection / Rapid Response (EDRR) is a critical part of this work.

Marin knotweed EDRR Andrea Williams by Anna Dirkse
The California Native Plant Society’s (CNPS) Fire Followers project is one example of engaging community scientists on-the-ground to help gather post-fire response data. Andrea Williams will provide an overview of the project, which targets areas burned in 2020's historic fire season. The locations of invasive plants in burn scars helps land managers like Joey plan their management to reduce the spread of high-risk weeds after fires. Andrea's talk will cover how to make, identify, and download observations and some of our prize challenges and ways to get involved.


Wednesday June 9th

Eyes on the Lake – Leveraging the power of citizen science to Keep Tahoe Blue

visit Lake Tahoe with Emily Frey, Keep Tahoe Blue

Watch the video here!

Millions of people recreating at Lake Tahoe can protect while they play by joining Keep Tahoe Blue’s citizen science programs like Eyes on the Lake. Learn how these efforts by volunteers can complement Tahoe’s Environmental Improvement Program to manage aquatic invasive species and engage a vast range of visitors and locals in shared stewardship.

Thursday, June 10th

Can participatory science help to monitor invasive shothole borers?

hear from Beatriz Nobua-Behrman, Urban Forestry Advisor with UCCE, Orange and Los Angeles Counties

To dive deeper into all things invasive shot hole borer click here.

Watch the video here!

Some pests are easier to observe and recognize than others. Pests that spend most of their lives inside a tree are a special challenge, since we rarely see them and must rely on signs and symptoms to determine if the tree is infested. Such is the case of the invasive shothole borers: tiny invasive beetles that tunnel into trees and vector a tree disease called Fusarium dieback. These beetles are responsible for the decline and death of thousands of trees in Southern California. Detecting infestations early is key for successful management and to prevent the spread of this dangerous pest. Given the challenges of accurately identifying infestations, can participatory science with volunteer observers still be a good tool to monitor for this pest?

Friday June 11th

The Invasive Spartina Project: Restoring Native Tidal Marsh Habitat and Promoting Resilience in a Changing Bay Ecosystem

J Hammond
head to the Bay with Jeanne Hammond, ISP Restoration Program Manager, and Lindsay Faye Domecus, Environmental Biologist

Watch the video here!

Nestled at the center of a 5-million-person metropolis, the San Francisco Bay’s saltmarshes and tidal mudflats provide unique habitat for a range of wildlife, from resident shorebirds to migrating waterfowl along the Pacific Flyway. The State Coastal Conservancy established the Invasive Spartina Project as a coordinated regional effort among local, state, and federal organizations to protect these extraordinary biological resources by eliminating introduced species of Spartina (cordgrass) that crowd out native vegetation and change shoreline dynamics.

L Faye Domecus
Since 2000, the project has reduced hybrid Spartina 96% from 805 net acres in 2005 to ~33 in 2020 and planted over 530,000 natives. This fascinating landscape-level project includes early morning bird surveys, genetic testing, and airboat rides to remote mudflats. Learn how restoration of these native tidal marshes can provide critical habitat for wildlife and act as a buffer against sea level rise for Bay shoreline communities.