Delta Interagency Invasive Species
Coordination (DIISC) Team Activities and Symposium

The DIISC Team has implemented or sponsored multiple projects to strengthen communication and collaboration among organizations involved in invasive species management in the Delta.

Delta Invasive Species Symposium 

Since 2015, the DIISC Team has organized a biennial Delta Invasive Species Symposium. The symposium is a forum for Delta managers, researchers, and decision-makers to meet, share and synthesize information, and communicate best practices and lessons learned.

2023: Making Connections: Understanding Connectivity in an Invaded Estuary
November 30, 2023 at CNRA (hybrid event)

Presentations explored how connections within and among estuaries impact invasive species movement, how connectivity of different types can both help and hinder invasive species control, and how making connections among disciplines, policies, and actors is critical to effective invasive species management.

• 2023 Delta Invasive Species Symposium agenda and abstracts
• Video of the 2023 Invasive Species Symposium presentations (external link)
• One-page summary of the Symposium concept

2021: Early Detection and Rapid Response
December 15, 2021(virtual event)

• 2021 Delta Invasive Species Symposium agenda
• Video of the 2021 Invasive Species Symposium presentations (external link)
• 2021 Delta Invasive Species Symposium flyer

2019: Remote Sensing Applications for Management
August 29, 2019 at UC Davis

Presentations explored remote sensing tools and applications for invasive species management in the Delta available today and opportunities for the future. The symposium was sponsored by the DIISC Team, Delta Stewardship Council’s Delta Science Program, and UC Davis.

• 2019 Invasive Species Symposium agenda
• 2019 Invasive Species Symposium summary
• Videos of the 2019 Invasive Species Symposium presentations (external link)

2017: Tools and Actions to Meet Current Needs and Prepare for Future Challenges
August 29, 2017 at UC Davis

Presentations explored tools and actions being developed to meet today’s management needs as well as to prepare for future challenges. The seminar also explored our understanding of how habitats can be managed to encourage native and deter invasive species, and how social science can be better integrated into invasive species management. The symposium was co-sponsored by the DIISC Team, Delta Stewardship Council’s Delta Science Program, and UC Davis.  

• Videos of the 2017 symposium presentations (external link)

2015: Invasive Aquatic Vegetation

DIISC Team members and speakers from the 2015 symposium co-authored a review article that was published in San Francisco Estuary & Watershed Science in December 2017.

• Synthesis paper: Invasive Aquatic Vegetation Management in the Sacramento-San Joaquin River Delta: Status and Recommendations (external link)

Investigations of Restoration Techniques That Limit Invasion of Tidal Wetlands

In 2017, UC Davis received $107,655 from the Sacramento-San Joaquin Delta Conservancy’s Proposition 1 Grant Program to investigate restoration techniques to limit invasion of tidal wetlands. The project identifies improved methods for tidal wetland revegetation that reduce invasion by non-native plants at Dutch Slough. The DIISC Team identified this project as a research priority in 2015 and participated in the grant proposal development.