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Project: Ecosystem Engineering Impacts of Water Primrose in the Delta

Description: Prior research has shown that marshes are vulnerable to water primrose impacts which would negatively affect emergent macrophytes that support the Delta’s native fish and wildlife species and are important contributors to processes of vertical accretion. Over ~700 acres of marsh were lost to water primrose invasion in the Delta between 2014-2016. Funding for this project will be used for a study that addresses the scientific underpinnings of how water primrose invades and overtakes marsh as well as the factors that make marshes vulnerable to takeover in the first place.

Reference Number: 3600BQ2096002

Implemented By: Regents of the University of California

Objective: By studying the plant traits of water primrose, this project will determine the likely cause of marsh loss and learn about the process of terrestrial water primrose invasion. This will inform the conceptual model of invasive aquatic vegetation invasion in the Delta and will enable researchers to identify and map the marshes that are most vulnerable to takeover by water primrose, which will help to inform future restoration efforts.

Type: Restoration, Research/Planning (including Science)

Total Cost: $952,844.00

Project Status: Project Implementation

On Time?: Yes    Within Scope?: Yes    Within Budget?: Yes

Estimated Completion: 1/1/2024    Actual Completion:

Associated Counties:

Project Benefits a Disadvantaged Community (or SDAC): No

Contribution SourcesContribution DateContribution Amount
Prop. 1, Water Quality, Ecosystem Restoration and Fish Protection Facilities - Delta7/8/2020$952,844.00

Project MetricMetric TopicQuantityUnit
RestorationEcosystem: Shallow Water/ Marsh/ Wetland Habitat490050acres restored/assessed/managed
RestorationEradication/Treatment of Invasive Species490050acres assessed/treated
Research/Planning (including Science)Mapping: Habitat  

Water Action Plan Target

Achieve the Co-Equal Goals for the DeltaAction Description
Protect and Restore Important EcosystemsAction Description


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