Larry Brown (Former Employee)
Science and Products
Filter Total Items: 125
Bayesian change point analysis of abundance trends for pelagic fishes in the upper San Francisco Estuary Bayesian change point analysis of abundance trends for pelagic fishes in the upper San Francisco Estuary
We examined trends in abundance of four pelagic fish species (delta smelt, longfin smelt, striped bass, and threadfin shad) in the upper San Francisco Estuary, California, USA, over 40 years using Bayesian change point models. Change point models identify times of abrupt or unusual changes in absolute abundance (step changes) or in rates of change in abundance (trend changes). We coupled...
Authors
James R. Thompson, Wim J. Kimmerer, Larry R. Brown, Ken B. Newman, Ralph Mac Nally, William A. Bennett, Frederick Feyrer, Erica Fleishman
Analysis of pelagic species decline in the upper San Francisco Estuary using multivariate autoregressive modeling (MAR) Analysis of pelagic species decline in the upper San Francisco Estuary using multivariate autoregressive modeling (MAR)
Four species of pelagic fish of particular management concern in the upper San Francisco Estuary, California, USA, have declined precipitously since ca. 2002: delta smelt (Hypomesus transpacificus), longfin smelt (Spirinchus thaleichthys), striped bass (Morone saxatilis), and threadfin shad (Dorosoma petenense). The estuary has been monitored since the late 1960s with extensive...
Authors
Ralph Mac Nally, James R. Thomson, Wim J. Kimmerer, Frederick Feyrer, Ken B. Newman, Andy Sih, William A. Bennett, Larry R. Brown, Erica Fleishman, Steven D. Culberson, Gonzalo Castillo
Comparison of thiaminase activity in fish using the radiometric and 4-nitrothiophenol colorimetric methods Comparison of thiaminase activity in fish using the radiometric and 4-nitrothiophenol colorimetric methods
Notice This publication has been retracted. See the retraction notice.
Authors
D. C. Honeyfield, J.W. Hanes, L. Brown, C.E. Kraft, T.P. Begley
Increase in lake trout reproduction in Lake Huron following the collapse of alewife: Relief from thiamine deficiency or larval predation? Increase in lake trout reproduction in Lake Huron following the collapse of alewife: Relief from thiamine deficiency or larval predation?
In the Great Lakes there is still uncertainty as to the population level effects of a thiamine deficiency on salmonines caused by high consumption of alewives Alosa pseudoharengus. A resurgence of lake trout Salvelinus namaycush reproduction in Lake Huron following the crash of alewife stocks between 2002 and 2004 provided an opportunity to evaluate the relative effects of this crash on
Authors
J.D. Fitzsimons, S. Brown, L. Brown, D. Honeyfield, J. He, J.E. Johnson
Status and conservation of lampreys in California Status and conservation of lampreys in California
Abstract.—Lampreys are among the least studied group of fishes in California. At least seven species inhabit freshwater habitats within the state, including the Kern brook lamprey Lampetra hubbsi, a California endemic. Four species are micropredators on fish, Pacific lamprey Entosphenus tridentatus (formerly L. tridentata), river lamprey L. ayresii, Klamath lamprey E. similis (formerly L...
Authors
Peter B. Moyle, Larry R. Brown, Shawn D. Chase, Rebecca M. Quinones
Selected Physical, Chemical, and Biological Data Used to Study Urbanizing Streams in Nine Metropolitan Areas of the United States, 1999-2004 Selected Physical, Chemical, and Biological Data Used to Study Urbanizing Streams in Nine Metropolitan Areas of the United States, 1999-2004
This report documents and summarizes physical, chemical, and biological data collected during 1999-2004 in a study titled Effects of Urbanization on Stream Ecosystems, undertaken as part of the U.S. Geological Survey's National Water-Quality Assessment Program. Data-collection methods and data processing are described in this report for streamflow; stream temperature; instream chemistry...
Authors
Elise M. P. Giddings, Amanda H. Bell, Karen M. Beaulieu, Thomas F. Cuffney, James F. Coles, Larry R. Brown, Faith A. Fitzpatrick, James A. Falcone, Lori A. Sprague, Wade L. Bryant, Marie C. Peppler, Cory Stephens, Gerard McMahon
Science and Products
Filter Total Items: 125
Bayesian change point analysis of abundance trends for pelagic fishes in the upper San Francisco Estuary Bayesian change point analysis of abundance trends for pelagic fishes in the upper San Francisco Estuary
We examined trends in abundance of four pelagic fish species (delta smelt, longfin smelt, striped bass, and threadfin shad) in the upper San Francisco Estuary, California, USA, over 40 years using Bayesian change point models. Change point models identify times of abrupt or unusual changes in absolute abundance (step changes) or in rates of change in abundance (trend changes). We coupled...
Authors
James R. Thompson, Wim J. Kimmerer, Larry R. Brown, Ken B. Newman, Ralph Mac Nally, William A. Bennett, Frederick Feyrer, Erica Fleishman
Analysis of pelagic species decline in the upper San Francisco Estuary using multivariate autoregressive modeling (MAR) Analysis of pelagic species decline in the upper San Francisco Estuary using multivariate autoregressive modeling (MAR)
Four species of pelagic fish of particular management concern in the upper San Francisco Estuary, California, USA, have declined precipitously since ca. 2002: delta smelt (Hypomesus transpacificus), longfin smelt (Spirinchus thaleichthys), striped bass (Morone saxatilis), and threadfin shad (Dorosoma petenense). The estuary has been monitored since the late 1960s with extensive...
Authors
Ralph Mac Nally, James R. Thomson, Wim J. Kimmerer, Frederick Feyrer, Ken B. Newman, Andy Sih, William A. Bennett, Larry R. Brown, Erica Fleishman, Steven D. Culberson, Gonzalo Castillo
Comparison of thiaminase activity in fish using the radiometric and 4-nitrothiophenol colorimetric methods Comparison of thiaminase activity in fish using the radiometric and 4-nitrothiophenol colorimetric methods
Notice This publication has been retracted. See the retraction notice.
Authors
D. C. Honeyfield, J.W. Hanes, L. Brown, C.E. Kraft, T.P. Begley
Increase in lake trout reproduction in Lake Huron following the collapse of alewife: Relief from thiamine deficiency or larval predation? Increase in lake trout reproduction in Lake Huron following the collapse of alewife: Relief from thiamine deficiency or larval predation?
In the Great Lakes there is still uncertainty as to the population level effects of a thiamine deficiency on salmonines caused by high consumption of alewives Alosa pseudoharengus. A resurgence of lake trout Salvelinus namaycush reproduction in Lake Huron following the crash of alewife stocks between 2002 and 2004 provided an opportunity to evaluate the relative effects of this crash on
Authors
J.D. Fitzsimons, S. Brown, L. Brown, D. Honeyfield, J. He, J.E. Johnson
Status and conservation of lampreys in California Status and conservation of lampreys in California
Abstract.—Lampreys are among the least studied group of fishes in California. At least seven species inhabit freshwater habitats within the state, including the Kern brook lamprey Lampetra hubbsi, a California endemic. Four species are micropredators on fish, Pacific lamprey Entosphenus tridentatus (formerly L. tridentata), river lamprey L. ayresii, Klamath lamprey E. similis (formerly L...
Authors
Peter B. Moyle, Larry R. Brown, Shawn D. Chase, Rebecca M. Quinones
Selected Physical, Chemical, and Biological Data Used to Study Urbanizing Streams in Nine Metropolitan Areas of the United States, 1999-2004 Selected Physical, Chemical, and Biological Data Used to Study Urbanizing Streams in Nine Metropolitan Areas of the United States, 1999-2004
This report documents and summarizes physical, chemical, and biological data collected during 1999-2004 in a study titled Effects of Urbanization on Stream Ecosystems, undertaken as part of the U.S. Geological Survey's National Water-Quality Assessment Program. Data-collection methods and data processing are described in this report for streamflow; stream temperature; instream chemistry...
Authors
Elise M. P. Giddings, Amanda H. Bell, Karen M. Beaulieu, Thomas F. Cuffney, James F. Coles, Larry R. Brown, Faith A. Fitzpatrick, James A. Falcone, Lori A. Sprague, Wade L. Bryant, Marie C. Peppler, Cory Stephens, Gerard McMahon
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government