Delta Smelt and Longfin Smelt Research

Research published in peer-reviewed journals by staff from the Lodi and San Francisco Bay-Delta offices of the Fish and Wildlife Service in collaboration with their partners can be accessed below. For additional information or data on Delta smelt or longfin smelt, please email brandon_honig@fws.gov or tamara_ward@fws.gov or call 916-930-2657. 

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• Re-Examining Factors That Affect Delta Smelt (Hypomesus transpacificus) Entrainment at the State Water Project and Central Valley Project in the Sacramento–San Joaquin Delta, published in March 2021

• Disentangling risks to an endangered fish: using a state-space life cycle model to separate natural mortality from anthropogenic losses, February 2021

• Characterization of Spawning Behavior in Cultured Delta Smelt, January 2021

• Improving inference for nonlinear state-space models of animal population dynamics given biased sequential life stage data, April 2020

• Did a Shifting Ecological Baseline Mask the Predatory Effect of Striped Bass on Delta Smelt? March 2020

• A Bayesian hierarchical model of postlarval delta smelt entrainment: integrating transport, length composition, and sampling efficiency in estimates of loss, December 2019

• Integration of Transport, Survival, and Sampling Efficiency in a Model of South Delta Entrainment, December 2019

• Using Multistage Design-Based Methods to Construct Abundance Indices and Uncertainty Measures for Delta Smelt, April 2019

• Estimating the Size Selectivity of Fishing Trawls for a Short-Lived Fish Species, March 2019

• A Covered Cod-End and Tow-Path Evaluation of Midwater Trawl Gear Efficiency for Catching Delta Smelt (Hypomesus transpacificus), December 2017

• Spatiotemporal Models of an Estuarine Fish Species to Identify Patterns and Factors Impacting Their Distribution and Abundance, June 2017

• Population dynamics of an estuarine forage fish: disaggregating forces driving long-term decline of Longfin Smelt in California’s San Francisco Estuary, January 2016

  

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• Delta smelt habitat in the San Francisco Estuary: a reply to Manly, Fullerton, Hendrix, and Burnham’s “Comments on Feyrer et al. Modeling the effects of future outflow on the abiotic habitat of an imperiled estuarine fish,” May 2015

• The role of tidal marsh restoration in fish management in the San Francisco Estuary, March 2014

• Common predator, rare prey: exploring juvenile striped bass predation on delta smelt in California’s San Francisco Estuary, November 2013

• The spawning migration of delta smelt in the upper San Francisco Estuary, July 2011

• Modeling the effects of future outflow on the abiotic habitat of an imperiled estuarine fish, September 2010