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David Ayers (Former Employee)

Science and Products

High-Resolution Measurements to Identify Effects of Aquatic Vegetation on Water Quality and Stratification

The dataset documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North Delta of the Sacramento-San Joaquin River Delta of California, USA. The dataset includes surface mapping, depth profile, and discrete data for nitrate, ammonium, phosphate, dissolved organic carbon, temperature, conductivity, dissolved...
By
California Water Science Center

Scientific observations of fishes in tidal wetlands of the upper Sacramento San Joaquin Delta using imaging sonar devices, derived from 2018 field data

Major tidal wetland habitat restoration efforts are planned to benefit Delta Smelt and other imperiled species in the Sacramento-San-Joaquin Delta. However, successful implementation of habitat restoration is constrained by a paucity of information on the services and functions tidal wetlands provide for fishes. This knowledge gap is largely due to the difficulties of collecting...
By
California Water Science Center
Filter Total Items: 22
Image: Kelp Crab
Kelp Crab
Kelp Crab
Image: Kelp Crab

Kelp Crab

Kelp Crab

A Kelp Crab (Pugettia producta) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Research Center.

By
Southwest Biological Science Center, Communications and Publishing
Image: Kelp Crab

Kelp Crab

Kelp Crab

A Kelp Crab (Pugettia producta) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Research Center.

By
Southwest Biological Science Center, Communications and Publishing
Photo of two small fish on a table.
Juvenile sand lance and surf smelt
Juvenile sand lance and surf smelt
Photo of two small fish on a table.

Juvenile sand lance and surf smelt

Juvenile sand lance and surf smelt

Juvenile sand lance (Ammodytes hexapterus) (top) and surf smelt (Hypomesus pretiosus) (bottom) collected on Bainbridge Island, Washington. Scale is in inches.

By
Coastal and Marine Hazards and Resources Program, California Water Science Center
Photo of two small fish on a table.

Juvenile sand lance and surf smelt

Juvenile sand lance and surf smelt

Juvenile sand lance (Ammodytes hexapterus) (top) and surf smelt (Hypomesus pretiosus) (bottom) collected on Bainbridge Island, Washington. Scale is in inches.

By
Coastal and Marine Hazards and Resources Program, California Water Science Center
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Crescent gunnel collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Crescent gunnel collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists identify fish collected in a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists identify fish collected in a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists Lisa Gee, Collin Smith, and Ryan Tomka display a bycatch of perch collected in a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists Lisa Gee, Collin Smith, and Ryan Tomka display a bycatch of perch collected in a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Eelgrass beds such as this one found on Bainbridge Island, WA have been identified as a possible primary source of energy to the food chain and may also serve as nursery areas for juvenile forage fish.

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Eelgrass beds such as this one found on Bainbridge Island, WA have been identified as a possible primary source of energy to the food chain and may also serve as nursery areas for juvenile forage fish.

By
Southwest Biological Science Center, Communications and Publishing
People pulling fishing nets from the shoreline onto land.
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
People pulling fishing nets from the shoreline onto land.

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists haul a beach seine over an eelgrass bed while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

By
Southwest Biological Science Center, Communications and Publishing
People pulling fishing nets from the shoreline onto land.

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists haul a beach seine over an eelgrass bed while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Market squid collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Market squid collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Tidepool snailfish collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Tidepool snailfish collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Sanddab collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Sanddab collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Plainfin midshipman collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Plainfin midshipman collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Harbor seals are a predator of forage fish such as surf smelt and sand lance.  These two were observed lounging on a breakwall in Liberty Bay, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Harbor seals are a predator of forage fish such as surf smelt and sand lance.  These two were observed lounging on a breakwall in Liberty Bay, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile sand lance collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  Like surf smelt, sand lance are an important forage fish in Puget Sound.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile sand lance collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  Like surf smelt, sand lance are an important forage fish in Puget Sound.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Adult surf smelt collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Adult surf smelt collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile surf smelt and sand lance collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile surf smelt and sand lance collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Three size classes of juvenile surf smelt collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Three size classes of juvenile surf smelt collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists deploy a beach seine while conducting a survey for juvenile surf smelt in Eagle Harbor, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists deploy a beach seine while conducting a survey for juvenile surf smelt in Eagle Harbor, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists deploy a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists deploy a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Red Rock Crab in Puget Sound
Red Rock Crab in Puget Sound
Red Rock Crab in Puget Sound
Image: Red Rock Crab in Puget Sound

Red Rock Crab in Puget Sound

Red Rock Crab in Puget Sound

A Red Rock Crab (Romaleon antennarium) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Re

By
Southwest Biological Science Center, Communications and Publishing
Image: Red Rock Crab in Puget Sound

Red Rock Crab in Puget Sound

Red Rock Crab in Puget Sound

A Red Rock Crab (Romaleon antennarium) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Re

By
Southwest Biological Science Center, Communications and Publishing
Image: Graceful Crab in Puget Sound
Graceful Crab in Puget Sound
Graceful Crab in Puget Sound
Image: Graceful Crab in Puget Sound

Graceful Crab in Puget Sound

Graceful Crab in Puget Sound

A Graceful Crab (Metacarcinus gracilis) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries R

By
Southwest Biological Science Center, Communications and Publishing
Image: Graceful Crab in Puget Sound

Graceful Crab in Puget Sound

Graceful Crab in Puget Sound

A Graceful Crab (Metacarcinus gracilis) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries R

By
Southwest Biological Science Center, Communications and Publishing
Image: Helmet Crab in Puget Sound
Helmet Crab in Puget Sound
Helmet Crab in Puget Sound
Image: Helmet Crab in Puget Sound

Helmet Crab in Puget Sound

Helmet Crab in Puget Sound

A Helment Crab (Telmessus_cheiragonus) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey. This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Research Center.

By
Southwest Biological Science Center, Communications and Publishing
Image: Helmet Crab in Puget Sound

Helmet Crab in Puget Sound

Helmet Crab in Puget Sound

A Helment Crab (Telmessus_cheiragonus) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey. This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Research Center.

By
Southwest Biological Science Center, Communications and Publishing

Management of tidal wetland restoration and fish in the upper San Francisco Estuary: Where are we now and how do we move forward? A summary of the 2023 Wetland Science Symposium

Tidal wetland restoration to benefit at-risk fish species in the Sacramento-San Joaquin Delta and Suisun marsh has gained momentum over the past decade, much of it in response to mitigation requirements for the State Water Project and Central Valley Project. In fall 2023, the Department of Water Resources and the State Water Contractors convened a symposium, entitled Delta-Suisun Tidal...
Authors
Rosemary Hartman, Matthew J. Young, Stacy Sherman, David E. Ayers, Elizabeth Brusati, Dylan Chapple, Emma Mendonsa, Edward Hard, Louise Conrad
By
Water Resources Mission Area, California Water Science Center

The influence of time, tide, and place on fine scale nekton distribution: Insights from the San Francisco Estuary

The location of estuarine organisms varies based on geophysical cycles and environmental conditions, which can strongly bias understanding of organism abundance and distribution. In the San Francisco Estuary, California, extensive monitoring surveys have provided insight into the life history and ecology of certain commercially important or legislatively protected fish species. However...
Authors
Matthew J. Young, Frederick V. Feyrer, Jason L. Hassrick, Shawn Acuna, David E. Ayers, John M. Donovan, Lenny Grimaldo
By
Water Resources Mission Area, California Water Science Center

Physics to fish—Understanding the factors that create and sustain native fish habitat in the San Francisco Estuary

Executive SummaryThe Bureau of Reclamation (Reclamation) operates the Central Valley Project (CVP), one of the nation’s largest water projects. Reclamation has an ongoing need to improve the scientific basis for adaptive management of the CVP and, by extension, joint operations with California’s State Water Project. The U.S. Geological Survey (USGS) works cooperatively with the Bureau of...
Authors
Larry R. Brown, David E. Ayers, Brian A. Bergamaschi, Jon R. Burau, Evan T. Dailey, Bryan D. Downing, Maureen A. Downing-Kunz, Frederick V. Feyrer, Brock M. Huntsman, Tamara E. C. Kraus, Tara Morgan, Jessica R. Lacy, Francis Parchaso, Catherine A. Ruhl, Elizabeth B. Stumpner, Paul Stumpner, Janet Thompson, Matthew J. Young
By
Water Resources Mission Area, California Water Science Center, Pacific Coastal and Marine Science Center

Dissolved oxygen controls summer habitat of Clear Lake Hitch (Lavinia exilicauda chi), an imperilled potamodromous cyprinid

The Clear Lake Hitch is an imperiled minnow endemic to Clear Lake, Lake County, California, USA that is listed as threatened under the California Endangered Species Act (ESA) and is a candidate for listing under the United States ESA. It exhibits a potamodromous life cycle whereby adults, which reach up to 6+ years in age and over 350 mm in length, migrate into Clear Lake’s ephemeral...
Authors
Frederick V. Feyrer, Matthew Young, Oliver Patton, David E. Ayers
By
Water Resources Mission Area, California Water Science Center

Understanding the influence of predation on introduced fishes on juvenile salmonids in the Columbia River Basin: Closing some knowledge gaps. Late summer and fall diet and condition of smallmouth bass, walleye, and channel catfish in the middle Columbia R

American shad Alosa sapidissima in the middle Columbia River (MCR)—a high energy food available in the summer and fall—may be contributing to the increased growth and enhanced condition of nonnative piscivores. To test this hypothesis we quantified the late summer and autumn diets of smallmouth bass Micropterus dolomieu, walleye Sander vitreus, and channel catfish Ictalurus punctatus in...
Authors
Brien P. Rose, Gabriel S. Hansen, Weaver, David Ayers, Erick S. Van Dyke, Matthew G. Mesa
By
Ecosystems Mission Area, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

Science and Products

High-Resolution Measurements to Identify Effects of Aquatic Vegetation on Water Quality and Stratification

The dataset documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North Delta of the Sacramento-San Joaquin River Delta of California, USA. The dataset includes surface mapping, depth profile, and discrete data for nitrate, ammonium, phosphate, dissolved organic carbon, temperature, conductivity, dissolved...
By
California Water Science Center

Scientific observations of fishes in tidal wetlands of the upper Sacramento San Joaquin Delta using imaging sonar devices, derived from 2018 field data

Major tidal wetland habitat restoration efforts are planned to benefit Delta Smelt and other imperiled species in the Sacramento-San-Joaquin Delta. However, successful implementation of habitat restoration is constrained by a paucity of information on the services and functions tidal wetlands provide for fishes. This knowledge gap is largely due to the difficulties of collecting...
By
California Water Science Center
Filter Total Items: 22
Image: Kelp Crab
Kelp Crab
Kelp Crab
Image: Kelp Crab

Kelp Crab

Kelp Crab

A Kelp Crab (Pugettia producta) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Research Center.

By
Southwest Biological Science Center, Communications and Publishing
Image: Kelp Crab

Kelp Crab

Kelp Crab

A Kelp Crab (Pugettia producta) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Research Center.

By
Southwest Biological Science Center, Communications and Publishing
Photo of two small fish on a table.
Juvenile sand lance and surf smelt
Juvenile sand lance and surf smelt
Photo of two small fish on a table.

Juvenile sand lance and surf smelt

Juvenile sand lance and surf smelt

Juvenile sand lance (Ammodytes hexapterus) (top) and surf smelt (Hypomesus pretiosus) (bottom) collected on Bainbridge Island, Washington. Scale is in inches.

By
Coastal and Marine Hazards and Resources Program, California Water Science Center
Photo of two small fish on a table.

Juvenile sand lance and surf smelt

Juvenile sand lance and surf smelt

Juvenile sand lance (Ammodytes hexapterus) (top) and surf smelt (Hypomesus pretiosus) (bottom) collected on Bainbridge Island, Washington. Scale is in inches.

By
Coastal and Marine Hazards and Resources Program, California Water Science Center
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Crescent gunnel collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Crescent gunnel collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists identify fish collected in a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists identify fish collected in a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists Lisa Gee, Collin Smith, and Ryan Tomka display a bycatch of perch collected in a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

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Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists Lisa Gee, Collin Smith, and Ryan Tomka display a bycatch of perch collected in a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Eelgrass beds such as this one found on Bainbridge Island, WA have been identified as a possible primary source of energy to the food chain and may also serve as nursery areas for juvenile forage fish.

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Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Eelgrass beds such as this one found on Bainbridge Island, WA have been identified as a possible primary source of energy to the food chain and may also serve as nursery areas for juvenile forage fish.

By
Southwest Biological Science Center, Communications and Publishing
People pulling fishing nets from the shoreline onto land.
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
People pulling fishing nets from the shoreline onto land.

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists haul a beach seine over an eelgrass bed while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

By
Southwest Biological Science Center, Communications and Publishing
People pulling fishing nets from the shoreline onto land.

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists haul a beach seine over an eelgrass bed while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Market squid collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

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Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Market squid collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Tidepool snailfish collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

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Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Tidepool snailfish collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Sanddab collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

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Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Sanddab collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Plainfin midshipman collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

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Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Plainfin midshipman collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Harbor seals are a predator of forage fish such as surf smelt and sand lance.  These two were observed lounging on a breakwall in Liberty Bay, WA. 

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Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Harbor seals are a predator of forage fish such as surf smelt and sand lance.  These two were observed lounging on a breakwall in Liberty Bay, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile sand lance collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  Like surf smelt, sand lance are an important forage fish in Puget Sound.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile sand lance collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  Like surf smelt, sand lance are an important forage fish in Puget Sound.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Adult surf smelt collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Adult surf smelt collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile surf smelt and sand lance collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile surf smelt and sand lance collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Three size classes of juvenile surf smelt collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Three size classes of juvenile surf smelt collected in a beach seine by USGS Western Fisheries Research Center scientists while conducting a survey for juvenile surf smelt on Bainbridge Island, WA. 

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists deploy a beach seine while conducting a survey for juvenile surf smelt in Eagle Harbor, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists deploy a beach seine while conducting a survey for juvenile surf smelt in Eagle Harbor, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Juvenile Surf Smelt Surveys in Central Puget Sound, Washington
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists deploy a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

Juvenile Surf Smelt Surveys in Central Puget Sound, Washington

USGS Western Fisheries Research Center scientists deploy a beach seine while conducting a survey for juvenile surf smelt on Bainbridge Island, WA.  

By
Southwest Biological Science Center, Communications and Publishing
Image: Red Rock Crab in Puget Sound
Red Rock Crab in Puget Sound
Red Rock Crab in Puget Sound
Image: Red Rock Crab in Puget Sound

Red Rock Crab in Puget Sound

Red Rock Crab in Puget Sound

A Red Rock Crab (Romaleon antennarium) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Re

By
Southwest Biological Science Center, Communications and Publishing
Image: Red Rock Crab in Puget Sound

Red Rock Crab in Puget Sound

Red Rock Crab in Puget Sound

A Red Rock Crab (Romaleon antennarium) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Re

By
Southwest Biological Science Center, Communications and Publishing
Image: Graceful Crab in Puget Sound
Graceful Crab in Puget Sound
Graceful Crab in Puget Sound
Image: Graceful Crab in Puget Sound

Graceful Crab in Puget Sound

Graceful Crab in Puget Sound

A Graceful Crab (Metacarcinus gracilis) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries R

By
Southwest Biological Science Center, Communications and Publishing
Image: Graceful Crab in Puget Sound

Graceful Crab in Puget Sound

Graceful Crab in Puget Sound

A Graceful Crab (Metacarcinus gracilis) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries R

By
Southwest Biological Science Center, Communications and Publishing
Image: Helmet Crab in Puget Sound
Helmet Crab in Puget Sound
Helmet Crab in Puget Sound
Image: Helmet Crab in Puget Sound

Helmet Crab in Puget Sound

Helmet Crab in Puget Sound

A Helment Crab (Telmessus_cheiragonus) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey. This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Research Center.

By
Southwest Biological Science Center, Communications and Publishing
Image: Helmet Crab in Puget Sound

Helmet Crab in Puget Sound

Helmet Crab in Puget Sound

A Helment Crab (Telmessus_cheiragonus) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey. This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Research Center.

By
Southwest Biological Science Center, Communications and Publishing

Management of tidal wetland restoration and fish in the upper San Francisco Estuary: Where are we now and how do we move forward? A summary of the 2023 Wetland Science Symposium

Tidal wetland restoration to benefit at-risk fish species in the Sacramento-San Joaquin Delta and Suisun marsh has gained momentum over the past decade, much of it in response to mitigation requirements for the State Water Project and Central Valley Project. In fall 2023, the Department of Water Resources and the State Water Contractors convened a symposium, entitled Delta-Suisun Tidal...
Authors
Rosemary Hartman, Matthew J. Young, Stacy Sherman, David E. Ayers, Elizabeth Brusati, Dylan Chapple, Emma Mendonsa, Edward Hard, Louise Conrad
By
Water Resources Mission Area, California Water Science Center

The influence of time, tide, and place on fine scale nekton distribution: Insights from the San Francisco Estuary

The location of estuarine organisms varies based on geophysical cycles and environmental conditions, which can strongly bias understanding of organism abundance and distribution. In the San Francisco Estuary, California, extensive monitoring surveys have provided insight into the life history and ecology of certain commercially important or legislatively protected fish species. However...
Authors
Matthew J. Young, Frederick V. Feyrer, Jason L. Hassrick, Shawn Acuna, David E. Ayers, John M. Donovan, Lenny Grimaldo
By
Water Resources Mission Area, California Water Science Center

Physics to fish—Understanding the factors that create and sustain native fish habitat in the San Francisco Estuary

Executive SummaryThe Bureau of Reclamation (Reclamation) operates the Central Valley Project (CVP), one of the nation’s largest water projects. Reclamation has an ongoing need to improve the scientific basis for adaptive management of the CVP and, by extension, joint operations with California’s State Water Project. The U.S. Geological Survey (USGS) works cooperatively with the Bureau of...
Authors
Larry R. Brown, David E. Ayers, Brian A. Bergamaschi, Jon R. Burau, Evan T. Dailey, Bryan D. Downing, Maureen A. Downing-Kunz, Frederick V. Feyrer, Brock M. Huntsman, Tamara E. C. Kraus, Tara Morgan, Jessica R. Lacy, Francis Parchaso, Catherine A. Ruhl, Elizabeth B. Stumpner, Paul Stumpner, Janet Thompson, Matthew J. Young
By
Water Resources Mission Area, California Water Science Center, Pacific Coastal and Marine Science Center

Dissolved oxygen controls summer habitat of Clear Lake Hitch (Lavinia exilicauda chi), an imperilled potamodromous cyprinid

The Clear Lake Hitch is an imperiled minnow endemic to Clear Lake, Lake County, California, USA that is listed as threatened under the California Endangered Species Act (ESA) and is a candidate for listing under the United States ESA. It exhibits a potamodromous life cycle whereby adults, which reach up to 6+ years in age and over 350 mm in length, migrate into Clear Lake’s ephemeral...
Authors
Frederick V. Feyrer, Matthew Young, Oliver Patton, David E. Ayers
By
Water Resources Mission Area, California Water Science Center

Understanding the influence of predation on introduced fishes on juvenile salmonids in the Columbia River Basin: Closing some knowledge gaps. Late summer and fall diet and condition of smallmouth bass, walleye, and channel catfish in the middle Columbia R

American shad Alosa sapidissima in the middle Columbia River (MCR)—a high energy food available in the summer and fall—may be contributing to the increased growth and enhanced condition of nonnative piscivores. To test this hypothesis we quantified the late summer and autumn diets of smallmouth bass Micropterus dolomieu, walleye Sander vitreus, and channel catfish Ictalurus punctatus in...
Authors
Brien P. Rose, Gabriel S. Hansen, Weaver, David Ayers, Erick S. Van Dyke, Matthew G. Mesa
By
Ecosystems Mission Area, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
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