Matthew J Young, PhD
Matthew Young is a research fish biologist with the U.S. Geological Survey, and has been with the California Water Science Center since 2016.
He received his B.S. and Ph.D. degrees from the University of California, Davis. His work research is focused on interactions of native and non-native fishes with their environment, including novel ecosystem elements such as altered hydrology and proliferating non-native habitat engineers such as submersed aquatic vegetation. Currently he works in a variety of systems exploring relationships between native fishes and changes to their environment. This includes the spread of non-native species and potential displacement/competition, habitat alteration and the loss of underlying ecosystem processes, and the potential for habitat restoration to provide key mechanistic benefits to native fishes and other aquatic organisms.
Science and Products
Aquatic Ecology Group
The California Water Science Center's Aquatic Ecology Group is making great strides in research and reporting.
Longfin Smelt Distribution in the Coastal Pacific Ocean
Longfin Smelt ( Spirinchus thaleichthys) is a pelagic fish species found in waters along the Pacific coast, from Alaska to central California. Its complex life cycle makes it vulnerable to threats in both freshwater and at sea. Longfin Smelt is listed as a threatened species by the state of California.
Filter Total Items: 17
Abundance and Distribution of Fishes in Lower Blue Lake, Lake County, California
Field data for fishes sampled using bottom and surface gill nets during daylight hours on October 22-24, 2024 in Lower Blue Lake, Lake county, California, USA. This data release includes the results of all measured environmental parameters and fish taxa included in the analysis.
Stable Isotopes of Fish, Invertebrates, and Vegetation in the Northern Sacramento-San Joaquin Delta, California, 2022-2024
This dataset includes lab data for stable isotopes of fish tissue, invertebrates, and vegetation collected during daylight hours in the Northern Sacramento-San Joaquin Delta and drainage channels of the Yolo By-Pass, California, USA during summer 2022, 2023, and 2024. This data release includes all animal taxa and isotope values.
Mercury in biota from Clear Lake, California (ver. 3.0, August 2024)
Comma-separated values (.csv) file containing data related to mercury in biota collected from Clear Lake, California. This data release supersedes Pierce, J.R., Feyrer, F., Young, M., Enos, E., Clause, J., Alpers, C., and Eagles-Smith, C.A., 2022, Mercury in fishes from Clear Lake, California, 2019 and 2020 (ver. 2.0, February 2022): U.S. Geological Survey data release, https://doi.org...
Aquatic Stable Isotopes in the Owens River Gorge, CA 2017-2021
This dataset includes stable nitrogen-15 and carbon-13 isotope analysis data derived from freshwater aquatic and semi-aquatic primary producers, invertebrates, and fishes collected from five sampling sites (and one pilot site) within the Owens River Gorge, Mono and Inyo counties, CA, USA between 2017 and 2021. These sampling efforts were conducted in conjunction with the California...
Abundance and Distribution of Fishes in Clear Lake, Lake County, California (ver. 2.0, December 2024)
Field data for fishes sampled using bottom and surface gill nets during daylight hours in Clear Lake, California, USA. This data release includes all measured environmental parameters and fish taxa included in the analysis.
Fish distribution and tidal currents in the Upper San Francisco Estuary (ver. 3.0, March 2025)
This data release includes field data for fishes sampled through mid-water trawls and otter trawl methods from Suisun Bay, California to the mouth of the Sacramento River. These data were collected in August through September, 2022; October of 2023; and in September, 2024 as a part of a multi-year study of Suisun Dredging and Fish Distribution (SDFD). This data release includes...
Distribution and stomach contents of fishes in the northern Sacramento-San Joaquin Delta, 2020-2022
This data set includes count, location, and ancillary habitat data for fishes sampled in adjacent reaches of Georgiana Slough, Sacramento River, and Steamboat Slough in the northern Sacramento-San Joaquin Delta. It also includes data on the stomach contents of selected individual black basses (Micropterus). Fishes were sampled by boat electrofishing from approximately January-May, 2020...
Marine Observations of Longfin Smelt Spirinchus thaleichthys in the northeast Pacific Ocean
This dataset is a compilation of Longfin Smelt observations from multiple sources, including research institutions and museums, and local, state, and federal fisheries agencies.
Vertical Distribution of Longfin Smelt in the San Francisco Estuary (ver. 2.1, August 2020)
Field data for fishes sampled using mid-water trawls, otter trawls, and the SmeltCam during day and night in San Pablo Bay, CA. This data release includes all measured environmental parameters and fish taxa included in the analysis.
Diets and Stable Isotopes of Fishes in Rodeo Lagoon, California, 2016-2017
This dataset includes lab data for fish, fish diets, and stable isotopes for fish tissue, vegetation, and invertebrates collected during daylight hours in the Rodeo Lagoon and Lake in Golden Gate National Recreation Area at the Pacific Coast, USA during 2016 and 2017. This data release includes all animal taxa, and isotope values included in the analysis.
Zooplankton Survey of the Northern Sacramento-San Joaquin Delta, California, 2016-2018
This data set contains information on zooplankton and associated environmental parameters for sampling conducted in California's northern Sacramento-San Joaquin Delta between May 2016 and April 2018. Macrozooplankton were sampled with horizontal tows (water surface) of a 50 cm-diameter conical plankton net that was 150cm long with 102um mesh. Samples were preserved in the field in 10...
Little Holland Tract and Wildlands Flux Study; Zooplankton, Phytoplankton, and Larval Fish Taxonomic Data, 2017-2018
This data set includes taxonomic data for zooplankton, larval fish, and phytoplankton sampled in Little Holland Tract and Liberty Island Conservation Bank, in the northern Sacramento-San Joaquin River Delta, California. Zooplankton and larval fish were collected with target specific trawl nets and phytoplankton was collected from water grabs. This data release includes all measured...
Filter Total Items: 30
Gillnet sampling methods for monitoring status and trends of Clear Lake Hitch in Clear Lake, Lake County, California
The Clear Lake Hitch (Lavinia exilicauda chi) is a minnow endemic to Clear Lake, Lake County, California. This species is listed as a threatened species under the California Endangered Species Act and has been petitioned for listing under the United States Endangered Species Act. In 2017, the U.S. Geological Survey, in cooperation with the U.S. Fish and Wildlife Service, initiated a...
Authors
Frederick Feyrer, Matthew J. Young, Brock Huntsman, Veronica Violette, Justin K. Clause, Jordan Buxton, Danielle Palm, Marissa L. Wulff, Jeff Gronemyer, Luis Santana
Simulated effects of future water availability and protected species habitat in a perennial wetland, Santa Barbara County, California
This study evaluates the potential water availability in Barka Slough and the effects of changing hydrological conditions on the aquatic habitat of five protected species. Barka Slough is a historically perennial wetland at the downstream western end of the San Antonio Creek Valley watershed (SACVW). A previously published hydrologic model of the SACVW for 1948–2018 was extended to...
Authors
Geoffrey Cromwell, Daniel Philip Culling, Matthew J. Young, Joshua Larsen
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
Anthropogenic and environmental risk factors of salmonid predation in a tidal freshwater delta
Water diversions that support agricultural and municipal use result in fish mortality through entrainment and impingement. Additionally, this infrastructure may attract both predators and prey fishes, thereby increasing predation rates and prey mortality near these anthropogenic contact points. The Sacramento–San Joaquin Delta (the Delta) in California's Central Valley is a tidal...
Authors
T. Reid Nelson, Brendan M. Lehman, Nicholas J. Demetras, Lance Takata, Matthew J. Young, Frederick V. Feyrer, Cyril J. Michel
Age, growth, and trophic ecology of the Redeye Bass, an introduced invader of California rivers
ObjectiveThe Redeye Bass Micropterus coosae is a piscivore introduced into California, which has become a threat to the state's endemic freshwater fishes. It has eliminated native fishes from the middle reaches of the Cosumnes River, our study stream, which is the largest stream without a major dam on its main stem in the Sacramento–San Joaquin River drainage, central California, USA. We...
Authors
Beth C. Long, Peter B. Moyle, Matthew J. Young, Patrick K. Crain
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
Variability in coastal habitat available for Longfin Smelt Spirinchus thaleichthys in the northeastern Pacific Ocean
An understanding of oceanographic conditions and processes important to marine animal ecology is fundamental to the development of effective management and conservation actions. Longfin Smelt (Spirinchus thaleichthys) is a pelagic forage fish found in coastal and estuarine waters along the Pacific coast of North America from Alaska to central California. Substantial population declines...
Authors
Matthew J. Young, Frederick V. Feyrer, Steven T. Lindley, David D. Huff
Wetland geomorphology and tidal hydrodynamics drive fine-scale fish community composition and abundance
Effective restoration of tidal wetlands for fish communities requires clear goals and mechanistic understanding of the ecosystem drivers which affect fish distribution and abundance. We examined fish community responses to abiotic habitat features in two adjacent but dissimilar freshwater tidal wetlands in the Sacramento-San Joaquin Delta, CA, USA, each of which represents a potential...
Authors
Justin Kinsey Clause, Mary Jade Farruggia, Frederick V. Feyrer, Matthew J. Young
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 Bergamaschi, Jon R. Burau, Evan T. Dailey, Bryan D. Downing, Maureen A. Downing-Kunz, Frederick V. Feyrer, Brock Huntsman, Tamara E. C. Kraus, Tara Morgan, Jessica R. Lacy, Francis Parchaso, Cathy Ruhl, Elizabeth B. Stumpner, Paul Stumpner, Janet K. Thompson, Matthew J. Young
Etiology of a fish kill, Including the endangered Tidewater Goby (Eucyclogobius newberryi), in a northeastern pacific coastal lagoon
Ecological disturbances such as fish kills can negatively impact ecosystem processes in coastal lagoons. To gain an understanding of factors causing fish kills, we examined conditions associated with a summertime fish kill in a northeastern Pacific coastal lagoon (Rodeo Lagoon, CA, USA). Examination of available data indicated the fish kill was likely caused by hypoxia involving the...
Authors
Frederick V. Feyrer, Matthew J. Young, Tamara E. C. Kraus, Elizabeth B. Stumpner, Darren Fong, Kurt D. Carpenter
Hydrodynamics structure plankton communities and interactions in a freshwater tidal estuary
Drivers of phytoplankton and zooplankton dynamics vary spatially and temporally in estuaries due to variation in hydrodynamic exchange and residence time, complicating efforts to understand controls on food web productivity. We conducted approximately monthly (2012–2019; n = 74) longitudinal sampling at 10 fixed stations along a freshwater tidal terminal channel in the San Francisco...
Authors
Adrianne P Smits, Luke C. Loken, Erwin E Van Nieuwenhuyse, Matthew J. Young, Paul Stumpner, Leah Kammel, Jon R. Burau, Randy A Dahlgren, Tiffany Brown, April Hennessey, Steven Sadro
Ecology and ecosystem impacts of submerged and floating aquatic vegetation in the Sacramento-San Joaquin Delta
Substantial increases in non-native aquatic vegetation have occurred in the upper San Francisco Estuary over the last 2 decades, largely from the explosive growth of a few submerged and floating aquatic plant species. Some of these species act as ecosystem engineers by creating conditions that favor their further growth and expansion as well as by modifying habitat for other organisms...
Authors
Mairgareth A. Christman, Shruti Khanna, Judith Z. Drexler, Matthew J. Young
Non-USGS Publications**
Ferrari, M.C.O., Ranåker, L., Weinersmith, K.L. et al. Effects of turbidity and an invasive waterweed on predation by introduced largemouth bass. Environ Biol Fish 97, 79–90 (2014). https://doi.org/10.1007/s10641-013-0125-7
Conrad, J.L., Bibian, A.J., Weinersmith, K.L., De Carion, D., Young, M.J., Crain, P., Hestir, E.L., Santos, M.J. and Sih, A., 2016. Novel species interactions in a highly modified estuary: association of Largemouth Bass with Brazilian waterweed Egeria densa. Transactions of the American Fisheries Society, 145(2), pp.249-263. https://doi.org/10.1080/00028487.2015.1114521
Schroeter, R. E, O'Rear, T. A, Young, M. J, & Moyle, P. B. (2015). The Aquatic Trophic Ecology of Suisun Marsh, San Francisco Estuary, California, During Autumn in a Wet Year. San Francisco Estuary and Watershed Science, 13(3). doi:https://doi.org/10.15447/sfews.2015v13iss3art6 Retrieved from https://escholarship.org/uc/item/3w96c3dt
Young, M.J., Berridge, K.A., O’Rear, T. et al. Habitat partitioning by native and alien fishes and decapods in novel habitats of the upper San Francisco Estuary. Biol Invasions 19, 2693–2710 (2017). https://doi.org/10.1007/s10530-017-1477-2
Mahardja B, Young MJ, Schreier B,
Sommer T. Understanding imperfect detection in a San
Francisco Estuary long-term larval and juvenile fish monitoring
programme. Fish Manag Ecol. 2017;24:488–503.
https://doi.org/10.1111/fme.12257
Sommer T. Understanding imperfect detection in a San
Francisco Estuary long-term larval and juvenile fish monitoring
programme. Fish Manag Ecol. 2017;24:488–503.
https://doi.org/10.1111/fme.12257
Weinersmith, K. L, Colombano, D. D, Bibian, A. J, Young, M. J, Sih, A., & Conrad, J. L. (2019). Diets of Largemouth Bass (Micropterus salmoides) in the Sacramento San Joaquin Delta. San Francisco Estuary and Watershed Science, 17(1). http://dx.doi.org/10.15447/sfews.2019v17iss1art3 Retrieved from https://escholarship.org/uc/item/9mn0v9qb
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Aquatic Ecology Group
The California Water Science Center's Aquatic Ecology Group is making great strides in research and reporting.
Longfin Smelt Distribution in the Coastal Pacific Ocean
Longfin Smelt ( Spirinchus thaleichthys) is a pelagic fish species found in waters along the Pacific coast, from Alaska to central California. Its complex life cycle makes it vulnerable to threats in both freshwater and at sea. Longfin Smelt is listed as a threatened species by the state of California.
Filter Total Items: 17
Abundance and Distribution of Fishes in Lower Blue Lake, Lake County, California
Field data for fishes sampled using bottom and surface gill nets during daylight hours on October 22-24, 2024 in Lower Blue Lake, Lake county, California, USA. This data release includes the results of all measured environmental parameters and fish taxa included in the analysis.
Stable Isotopes of Fish, Invertebrates, and Vegetation in the Northern Sacramento-San Joaquin Delta, California, 2022-2024
This dataset includes lab data for stable isotopes of fish tissue, invertebrates, and vegetation collected during daylight hours in the Northern Sacramento-San Joaquin Delta and drainage channels of the Yolo By-Pass, California, USA during summer 2022, 2023, and 2024. This data release includes all animal taxa and isotope values.
Mercury in biota from Clear Lake, California (ver. 3.0, August 2024)
Comma-separated values (.csv) file containing data related to mercury in biota collected from Clear Lake, California. This data release supersedes Pierce, J.R., Feyrer, F., Young, M., Enos, E., Clause, J., Alpers, C., and Eagles-Smith, C.A., 2022, Mercury in fishes from Clear Lake, California, 2019 and 2020 (ver. 2.0, February 2022): U.S. Geological Survey data release, https://doi.org...
Aquatic Stable Isotopes in the Owens River Gorge, CA 2017-2021
This dataset includes stable nitrogen-15 and carbon-13 isotope analysis data derived from freshwater aquatic and semi-aquatic primary producers, invertebrates, and fishes collected from five sampling sites (and one pilot site) within the Owens River Gorge, Mono and Inyo counties, CA, USA between 2017 and 2021. These sampling efforts were conducted in conjunction with the California...
Abundance and Distribution of Fishes in Clear Lake, Lake County, California (ver. 2.0, December 2024)
Field data for fishes sampled using bottom and surface gill nets during daylight hours in Clear Lake, California, USA. This data release includes all measured environmental parameters and fish taxa included in the analysis.
Fish distribution and tidal currents in the Upper San Francisco Estuary (ver. 3.0, March 2025)
This data release includes field data for fishes sampled through mid-water trawls and otter trawl methods from Suisun Bay, California to the mouth of the Sacramento River. These data were collected in August through September, 2022; October of 2023; and in September, 2024 as a part of a multi-year study of Suisun Dredging and Fish Distribution (SDFD). This data release includes...
Distribution and stomach contents of fishes in the northern Sacramento-San Joaquin Delta, 2020-2022
This data set includes count, location, and ancillary habitat data for fishes sampled in adjacent reaches of Georgiana Slough, Sacramento River, and Steamboat Slough in the northern Sacramento-San Joaquin Delta. It also includes data on the stomach contents of selected individual black basses (Micropterus). Fishes were sampled by boat electrofishing from approximately January-May, 2020...
Marine Observations of Longfin Smelt Spirinchus thaleichthys in the northeast Pacific Ocean
This dataset is a compilation of Longfin Smelt observations from multiple sources, including research institutions and museums, and local, state, and federal fisheries agencies.
Vertical Distribution of Longfin Smelt in the San Francisco Estuary (ver. 2.1, August 2020)
Field data for fishes sampled using mid-water trawls, otter trawls, and the SmeltCam during day and night in San Pablo Bay, CA. This data release includes all measured environmental parameters and fish taxa included in the analysis.
Diets and Stable Isotopes of Fishes in Rodeo Lagoon, California, 2016-2017
This dataset includes lab data for fish, fish diets, and stable isotopes for fish tissue, vegetation, and invertebrates collected during daylight hours in the Rodeo Lagoon and Lake in Golden Gate National Recreation Area at the Pacific Coast, USA during 2016 and 2017. This data release includes all animal taxa, and isotope values included in the analysis.
Zooplankton Survey of the Northern Sacramento-San Joaquin Delta, California, 2016-2018
This data set contains information on zooplankton and associated environmental parameters for sampling conducted in California's northern Sacramento-San Joaquin Delta between May 2016 and April 2018. Macrozooplankton were sampled with horizontal tows (water surface) of a 50 cm-diameter conical plankton net that was 150cm long with 102um mesh. Samples were preserved in the field in 10...
Little Holland Tract and Wildlands Flux Study; Zooplankton, Phytoplankton, and Larval Fish Taxonomic Data, 2017-2018
This data set includes taxonomic data for zooplankton, larval fish, and phytoplankton sampled in Little Holland Tract and Liberty Island Conservation Bank, in the northern Sacramento-San Joaquin River Delta, California. Zooplankton and larval fish were collected with target specific trawl nets and phytoplankton was collected from water grabs. This data release includes all measured...
Filter Total Items: 30
Gillnet sampling methods for monitoring status and trends of Clear Lake Hitch in Clear Lake, Lake County, California
The Clear Lake Hitch (Lavinia exilicauda chi) is a minnow endemic to Clear Lake, Lake County, California. This species is listed as a threatened species under the California Endangered Species Act and has been petitioned for listing under the United States Endangered Species Act. In 2017, the U.S. Geological Survey, in cooperation with the U.S. Fish and Wildlife Service, initiated a...
Authors
Frederick Feyrer, Matthew J. Young, Brock Huntsman, Veronica Violette, Justin K. Clause, Jordan Buxton, Danielle Palm, Marissa L. Wulff, Jeff Gronemyer, Luis Santana
Simulated effects of future water availability and protected species habitat in a perennial wetland, Santa Barbara County, California
This study evaluates the potential water availability in Barka Slough and the effects of changing hydrological conditions on the aquatic habitat of five protected species. Barka Slough is a historically perennial wetland at the downstream western end of the San Antonio Creek Valley watershed (SACVW). A previously published hydrologic model of the SACVW for 1948–2018 was extended to...
Authors
Geoffrey Cromwell, Daniel Philip Culling, Matthew J. Young, Joshua Larsen
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
Anthropogenic and environmental risk factors of salmonid predation in a tidal freshwater delta
Water diversions that support agricultural and municipal use result in fish mortality through entrainment and impingement. Additionally, this infrastructure may attract both predators and prey fishes, thereby increasing predation rates and prey mortality near these anthropogenic contact points. The Sacramento–San Joaquin Delta (the Delta) in California's Central Valley is a tidal...
Authors
T. Reid Nelson, Brendan M. Lehman, Nicholas J. Demetras, Lance Takata, Matthew J. Young, Frederick V. Feyrer, Cyril J. Michel
Age, growth, and trophic ecology of the Redeye Bass, an introduced invader of California rivers
ObjectiveThe Redeye Bass Micropterus coosae is a piscivore introduced into California, which has become a threat to the state's endemic freshwater fishes. It has eliminated native fishes from the middle reaches of the Cosumnes River, our study stream, which is the largest stream without a major dam on its main stem in the Sacramento–San Joaquin River drainage, central California, USA. We...
Authors
Beth C. Long, Peter B. Moyle, Matthew J. Young, Patrick K. Crain
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
Variability in coastal habitat available for Longfin Smelt Spirinchus thaleichthys in the northeastern Pacific Ocean
An understanding of oceanographic conditions and processes important to marine animal ecology is fundamental to the development of effective management and conservation actions. Longfin Smelt (Spirinchus thaleichthys) is a pelagic forage fish found in coastal and estuarine waters along the Pacific coast of North America from Alaska to central California. Substantial population declines...
Authors
Matthew J. Young, Frederick V. Feyrer, Steven T. Lindley, David D. Huff
Wetland geomorphology and tidal hydrodynamics drive fine-scale fish community composition and abundance
Effective restoration of tidal wetlands for fish communities requires clear goals and mechanistic understanding of the ecosystem drivers which affect fish distribution and abundance. We examined fish community responses to abiotic habitat features in two adjacent but dissimilar freshwater tidal wetlands in the Sacramento-San Joaquin Delta, CA, USA, each of which represents a potential...
Authors
Justin Kinsey Clause, Mary Jade Farruggia, Frederick V. Feyrer, Matthew J. Young
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 Bergamaschi, Jon R. Burau, Evan T. Dailey, Bryan D. Downing, Maureen A. Downing-Kunz, Frederick V. Feyrer, Brock Huntsman, Tamara E. C. Kraus, Tara Morgan, Jessica R. Lacy, Francis Parchaso, Cathy Ruhl, Elizabeth B. Stumpner, Paul Stumpner, Janet K. Thompson, Matthew J. Young
Etiology of a fish kill, Including the endangered Tidewater Goby (Eucyclogobius newberryi), in a northeastern pacific coastal lagoon
Ecological disturbances such as fish kills can negatively impact ecosystem processes in coastal lagoons. To gain an understanding of factors causing fish kills, we examined conditions associated with a summertime fish kill in a northeastern Pacific coastal lagoon (Rodeo Lagoon, CA, USA). Examination of available data indicated the fish kill was likely caused by hypoxia involving the...
Authors
Frederick V. Feyrer, Matthew J. Young, Tamara E. C. Kraus, Elizabeth B. Stumpner, Darren Fong, Kurt D. Carpenter
Hydrodynamics structure plankton communities and interactions in a freshwater tidal estuary
Drivers of phytoplankton and zooplankton dynamics vary spatially and temporally in estuaries due to variation in hydrodynamic exchange and residence time, complicating efforts to understand controls on food web productivity. We conducted approximately monthly (2012–2019; n = 74) longitudinal sampling at 10 fixed stations along a freshwater tidal terminal channel in the San Francisco...
Authors
Adrianne P Smits, Luke C. Loken, Erwin E Van Nieuwenhuyse, Matthew J. Young, Paul Stumpner, Leah Kammel, Jon R. Burau, Randy A Dahlgren, Tiffany Brown, April Hennessey, Steven Sadro
Ecology and ecosystem impacts of submerged and floating aquatic vegetation in the Sacramento-San Joaquin Delta
Substantial increases in non-native aquatic vegetation have occurred in the upper San Francisco Estuary over the last 2 decades, largely from the explosive growth of a few submerged and floating aquatic plant species. Some of these species act as ecosystem engineers by creating conditions that favor their further growth and expansion as well as by modifying habitat for other organisms...
Authors
Mairgareth A. Christman, Shruti Khanna, Judith Z. Drexler, Matthew J. Young
Non-USGS Publications**
Ferrari, M.C.O., Ranåker, L., Weinersmith, K.L. et al. Effects of turbidity and an invasive waterweed on predation by introduced largemouth bass. Environ Biol Fish 97, 79–90 (2014). https://doi.org/10.1007/s10641-013-0125-7
Conrad, J.L., Bibian, A.J., Weinersmith, K.L., De Carion, D., Young, M.J., Crain, P., Hestir, E.L., Santos, M.J. and Sih, A., 2016. Novel species interactions in a highly modified estuary: association of Largemouth Bass with Brazilian waterweed Egeria densa. Transactions of the American Fisheries Society, 145(2), pp.249-263. https://doi.org/10.1080/00028487.2015.1114521
Schroeter, R. E, O'Rear, T. A, Young, M. J, & Moyle, P. B. (2015). The Aquatic Trophic Ecology of Suisun Marsh, San Francisco Estuary, California, During Autumn in a Wet Year. San Francisco Estuary and Watershed Science, 13(3). doi:https://doi.org/10.15447/sfews.2015v13iss3art6 Retrieved from https://escholarship.org/uc/item/3w96c3dt
Young, M.J., Berridge, K.A., O’Rear, T. et al. Habitat partitioning by native and alien fishes and decapods in novel habitats of the upper San Francisco Estuary. Biol Invasions 19, 2693–2710 (2017). https://doi.org/10.1007/s10530-017-1477-2
Mahardja B, Young MJ, Schreier B,
Sommer T. Understanding imperfect detection in a San
Francisco Estuary long-term larval and juvenile fish monitoring
programme. Fish Manag Ecol. 2017;24:488–503.
https://doi.org/10.1111/fme.12257
Sommer T. Understanding imperfect detection in a San
Francisco Estuary long-term larval and juvenile fish monitoring
programme. Fish Manag Ecol. 2017;24:488–503.
https://doi.org/10.1111/fme.12257
Weinersmith, K. L, Colombano, D. D, Bibian, A. J, Young, M. J, Sih, A., & Conrad, J. L. (2019). Diets of Largemouth Bass (Micropterus salmoides) in the Sacramento San Joaquin Delta. San Francisco Estuary and Watershed Science, 17(1). http://dx.doi.org/10.15447/sfews.2019v17iss1art3 Retrieved from https://escholarship.org/uc/item/9mn0v9qb
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.