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Project 467 Update: Enhancing Native Plant Diversity at Edgewood, Stuart B. Weiss Ph.D. 
Wednesday, December 08, 2021 07:30pm
 
Edgewood Natural Preserve near Redwood City is famous for its flower-filled serpentine grasslands. But the 467 acres of Edgewood support great biodiversity in the chaparral, oak woodlands, and grasslands on more fertile soils. The 100+ acres of fertile grasslands are by far the most weed-invaded habitat, and have been the focus of successful control of “macroweeds.” Learn how the Friends of Edgewood and Creekside Science are pursuing the goal of decreasing “microweeds” and increasing native cover and diversity.

A Rapid Assessment Plot (RAP) inventory with over 80 plots documented more than 90 native species in the fertile grasslands, albeit often at low cover. They are investigating treatments to reduce annual weed seedlings just after germination, including hydromechanical pulverization (HMP) -- basically pressure washing the grassland, and close-mowing with string cutters.

Besides commercially available local seeds, they are using more than 15 species of “boutique” seeds grown at Edgewood Farms and the Native Garden. They are trying to develop a long-term “indigenous” approach to restoration, whereby a beautiful, colorful diversity of native plants is established and can spread naturally given occasional management. Dr Weiss will be presenting the exciting first year results and the second year scaling up.

Stu Weiss, Ph.D. (Stanford University) is Chief Scientist of Creekside Science, which provides scientific and conservation expertise to diverse organizations as they cope with the rapidly changing 21st Century environment. He has researched the Bay checkerspot butterfly and serpentine grasslands since 1979, and has authored numerous scientific papers concerning climate/microclimate, population dynamics, nitrogen deposition, and conservation ecology. Creekside Science executes many hands-on restoration projects, including butterfly reintroductions, propagation of endangered plants, and habitat monitoring and management. His research and advocacy were instrumental in the development of the Santa Clara Valley Habitat Plan, and he is Science Advisor for the Bay Area Conservation Lands Network. For more information see www.creeksidescience.com.
 

This talk will be live streamed on Zoom (requires advance registration) and YouTube (registration NOT required).

Location Zoom: https://us02web.zoom.us/meeting/register/tZIqcOyvqjgjEt3wAfnMvW2NjQ0zxx4VLULR
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Upcoming Events

Wed Aug 10 @ 6:30PM - 08:00PM
Amah Mutsun Relearning Program
Thu Aug 11 @ 7:00PM - 09:00PM
CNPS SCV Board Meeting
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Photography Group - Photo Sharing Meeting