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  • Title

    Delta Landscapes Project

    Lead San Francisco Estuary Institute [SFEI]
    Description The Delta Landscapes Project has developed a body of work to inform landscape-scale restoration of the Sacramento-San Joaquin Delta ecosystem. The project is built on knowledge, first published in 2012’s Delta Historical Ecology Investigation, of how the Delta ecosystem functioned in the early 1800s (prior to the California Gold Rush and subsequent landscape-level changes).
    Science topics Landscape metrics, Restoration planning, Marsh wildlife, Riparian wildlife, Terrestrial wildlife, Fish
    Updated April 29, 2022
  • Title

    Delta Landscape Scenario Planning Tool

    Lead San Francisco Estuary Institute [SFEI]
    Description The Delta Landscapes Scenario Planning Tool is a set of resources to assist users with developing, analyzing, and evaluating different land use scenarios in the Delta. The tool is designed to inform ongoing and future restoration planning efforts by assessing how proposed projects will affect a suite of landscape metrics relating to desired ecosystem functions.
    Science topics Fish, Landscape metrics, Marsh wildlife, Restoration planning, Riparian wildlife, Sea level rise, Terrestrial wildlife
    Updated November 17, 2022
  • Title

    Non-Invasive Environmental DNA Monitoring to Support Tidal Wetland Restoration

    Lead University of California - Davis [UC Davis]
    Description In this project we use single-species and multi-species environmental DNA (eDNA) approaches to monitor tidal wetland restoration sites and paired reference sites (existing, unrestored tidal wetlands located near restoration sites) in the San Francisco Bay Delta (SFBD). We are working in coordination with the CDFW Fish Restoration Program (FRP) and other collaborators so our eDNA detections can be paired with physical detections of fishes from their trawling efforts. Ultra-sensitive DNA single species detection methods are being used to identify restoration site use by listed species (Delta Smelt, Longfin Smelt, winter- and spring-run Chinook Salmon) while the DNA metabarcoding approach will evaluate entire fish communities (groups of different fish species) at restored and reference sites. Aside from revealing restored habitat use by other fishes, metabarcoding will reveal potential ecological interactions between Endangered Species Act listed and non-listed species, through concurrent detection in time and space. Sampling throughout the year will allow us to identify seasonal trends in fish use of restored and reference sites. This project will demonstrate the utility of eDNA detection as a non-invasive (no take), cost-effective monitoring tool that can complement conventional surveys of restored tidal wetlands in the SFBD. Our results can be incorporated into an adaptive monitoring framework for tidal wetland restoration, to increase success of future restoration projects.
    Science topics Chinook Salmon, Delta Smelt, Endangered species, Estuaries, Fish, Green sturgeon, Habitat, Habitat restoration, Invasive / non native species, Invertebrates, Longfin Smelt, Mollusks, Pelagic fish, Restoration, Restoration planning, Sacramento Splittail, Salmon migration, Salmon rearing, Steelhead Trout, Striped bass, Sturgeon, Tidal wetlands, Wetlands, White Sturgeon
    Updated May 24, 2024
  • Title

    Analysis of Delta Salinity during Extended Drought – Pilot Project

    Lead California Department of Water Resource [DWR]
    Description Managing California water operations for multiple priorities under long term drought conditions is becoming an increasing challenge which is compounded by potential sea level rise. This project is a pilot exercise to demonstrate the utility of hydrodynamic and salinity transport models in to understand options for salinity management under extended drought combined with climate change and sea level rise. The project will also consider how to make model outputs available and relevant to other modeling and environmental management decision making efforts. The full range of potential sea level rise, restoration and operational actions is extensive, involving many potential combinations of individual actions. Therefore, it is difficult to fully explore potential actions with high resolution multi-dimensional models. The proposed approach is to use high resolution multi-dimensional flow and transport models to evaluate changes in transport in the Delta under sea level rise, restoration, and operational scenarios. The predicted changes to salinity for a given scenario will inform operations modeling in CALSIM through re-calibration of an ANN to approximately account for the changed salinity response of the estuary. Operations modeling incorporating the revised ANN will then estimate Delta inflows and overall water cost to meet Delta standards for the scenario. “Round-trip” modeling will be performed using the detailed Delta models to verify that the predicted hydrologic inputs allow appropriate compliance with water quality standards and will provide other metrics related to Delta transport.
    Science topics Conductivity, Drought, Landscape change, Restoration planning, Sea level rise, Water operations / exports
    Updated January 29, 2024