The Role of Tidal Marsh Restoration in Fish Management in the San Francisco Estuary

Herbold, Bruce; Baltz, Donald M.; Brown, Larry R.; Grossinger, Robin M.; Kimmerer, Wim; Lehman, Peggy W.; Simenstad, Charles A.; Wilcox, Carl G.; Nobriga, Matthew L.

doi:10.15447/sfews.2014v12iss1art1

Cited by 38 publications

(40 citation statements)

References 15 publications

(11 reference statements)

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“…Implementation of regional restoration is expected to increase the capacity of the aquatic food web to support pelagic fishes (Herbold et al 2014). However, uncertainty remains about the scale and direction of the response of the food web to restoration.…”

Section: A Conceptual Model Of the Aquatic Food Web Of The Upper San mentioning

confidence: 99%

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A Conceptual Model of the Aquatic Food Web of the Upper San Francisco Estuary

Durand¹

2015

SFEWS

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Section: A Conceptual Model Of the Aquatic Food Web Of The Upper San mentioning

confidence: 99%

“…Restoration of aquatic habitat in the upper San Francisco Estuary (the estuary) is being planned in hopes of reversing historic declines of native fish (Herbold et al 2014). Much of the success of these projects will hinge on whether restoration can provide food and refuge across the life cycle of these…”

Section: Introductionmentioning

confidence: 99%

A Conceptual Model of the Aquatic Food Web of the Upper San Francisco Estuary

Durand¹

2015

SFEWS

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“…Now, very few extant marshes remain, and habitat modifications have blocked the flow of marsh derived production to open water habitats where smelt typically occur. Restoration of tidal wetlands is hypothesized to increase food availability for Delta Smelt and Longfin Smelt and improve feeding conditions locally, although very little direct evidence for this hypothesis currently exists (Herbold et al 2014). Many restoration projects are underway or in the planning phases (e.g., the Suisun Marsh Plan, 4 FRPA, 5 California EcoRestore 6 ), while several properties with high restoration potential are still privately owned; thus, we do not make specific recommendations to restore tracts of land.…”

Section: Tidal Marsh Restorationmentioning

confidence: 99%

Is Extinction Inevitable for Delta Smelt and Longfin Smelt? An Opinion and Recommendations for Recovery

Hobbs¹,

Moyle²,

Fangue³

et al. 2017

SFEWS

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“…High-value habitat types include those that are important to recovering species (e.g., Herbold et al 2014), those that replace historic habitat losses (e.g., Whipple et al 2012), and those that emphasize priorities from conservation plans (DSC 2013): tidal marsh, non-tidal marsh, managed wetlands, riparian forest and scrub, seasonal floodplain, alkaline seasonal wetland, and vernal pools. Location and number of levee failures, time of year, and water conditions influence the effects on the ecosystem.…”

Section: Ecosystem Consequencesmentioning

confidence: 99%

Factors and Processes Affecting Levee System Vulnerability

Deverel¹,

Bachand²,

Brandenberg³

et al. 2016

SFEWS

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We appraised factors and processes related to human activities and high water, subsidence, and seismicity. Farming and drainage of peat soils caused subsidence, which contributed to levee internal failures. Subsidence rates decreased with time, but still contributed to levee instability. Modeling changes in seepage and static slope instability suggests an increased probability of failure with decreasing peat thickness. Additional data is needed to assess the spatial and temporal effects of subsidence from peat thinning and deformation. Large-scale, state investment in levee upgrades (> $700 million since the mid-1970s) has increased conformance with applicable standards; however, accounts conflict about corresponding reductions in the number of failures.Modeling and history suggest that projected increases in high-flow frequency associated with climate change will increase the rate of levee failures. Quantifying this increased threat requires further research. A reappraisal of seismic threats resulted in updated ground motion estimates for multiple faults and earthquake-occurrence frequencies. Estimated ground motions are large enough to induce failure. The immediate seismic threat, liquefaction, is the sudden loss of strength from an increase in the pressure of the pore fluid and the corresponding loss of inter-particle contact forces. However, levees damaged during an earthquake that do not immediately fail may eventually breach. Key sources of uncertainty include occurrence frequencies and magnitudes, localized ground motions, and data for liquefaction potential.Estimates of the consequences of future levee failure range up to multiple billions of dollars. Analysis of future risks will benefit from improved description of levee upgrades and strength as well as consideration of subsidence, the effects of climate change, and earthquake threats. Levee habitat ecosystem benefits in this highly altered system are few. Better recognition and coordination is needed among the creation of high-value habitat, levee needs, and costs and benefits of levee improvements and breaches.

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The Role of Tidal Marsh Restoration in Fish Management in the San Francisco Estuary

Cited by 38 publications

References 15 publications

A Conceptual Model of the Aquatic Food Web of the Upper San Francisco Estuary

A Conceptual Model of the Aquatic Food Web of the Upper San Francisco Estuary

Is Extinction Inevitable for Delta Smelt and Longfin Smelt? An Opinion and Recommendations for Recovery

Factors and Processes Affecting Levee System Vulnerability

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