Brock Huntsman - California Water Science Center
Science and Products
Largemouth bass population assessment within flooded islands of the Sacramento-San Joaquin Delta
Field and laboratory data collected for fishes sampled by boat electrofishing in the Sacramento-San Joaquin delta, CA. This data release includes all measured environmental parameters, body composition analyses, otoliths, and fish taxa included in the analysis.
Hydrodynamics and habitat interact to structure fish communities within terminal channels of a tidal freshwater delta
Terminal channels were historically a common feature of tidal delta ecosystems but have become increasingly rare as landscapes have been modified. Tidal hydrodynamics are a defining feature in tidal terminal channel ecosystems from which native aquatic communities have evolved. However, few studies have explored the relationship between fish community structure and hydrodynamics in these tidal ter
Authors
Brock Huntsman, Matthew Young, Frederick Feyrer, Paul Stumpner, Larry R. Brown, Jon R. Burau
Joint-species analysis reveals potential displacement of native fishes by non-native fishes within the Santa Ana River, California
Accurate estimates of abundance are a cornerstone for resource managers to make effective decisions for fish conservation. However, multiple sampling methods often are required to sample fish communities, and ignoring the detection process can create substantial bias in latent state parameter estimation (e.g., abundance, survival). We developed a joint-species N-mixture model that integrated snork
Authors
Brock Huntsman, Larry R. Brown, Kai Palenscar, Chris Jones, Kerwin Russell, Heather Dyer, Brett Mills, Marissa L. Wulff, Jason May
Relative bias in catch among long-term fish monitoring surveys within the San Francisco Estuary
Fish monitoring gears rarely capture all available fish, an inherent bias in monitoring programs referred to as catchability. Catchability is a source of bias that can be affected by numerous aspects of gear deployment (e.g., deployment speed, mesh size, and avoidance behavior). Thus, care must be taken when multiple surveys—especially those using different sampling methods—are combined to answer
Authors
Brock Huntsman, Brian Mahardja, Samuel M. Bashevkin
Disentangling stationary and dynamic estuarine fish habitat to inform conservation: Species-specific responses to physical habitat and water quality in San Francisco Estuary
Estuaries represent critical aquatic habitat that connects surface water distributed between Earth’s landmasses and oceans. They are dynamic transitional ecosystems, which provide important habitat for fishes and other aquatic organisms. Effective conservation of species inhabiting estuaries requires knowledge of the habitat features that drive their abundance and distribution. We sought to elucid
Authors
Frederick Feyrer, Matthew Young, Brock Huntsman, Larry R. Brown
Interagency Ecological Program long-term monitoring element review: Pilot approach and methods development (2020)
This report describes the first-year, pilot-phase of what is intended to be a larger, multiple-year review of all IEP core long-term monitoring elements (LTMEs). Here we hope to provide evidence that the review team arrangement and communication schedule was effective at developing a framework to objectively evaluate a suite of LTMEs. We focused on developing methods for an effective review, docum
Authors
Jereme W. Gaeta, Samuel M. Bashevkin, Frederick Feyrer, Brock Huntsman, Brian Mahardja, Steven D Culberson, Michael P Beakes, Stephanie Fong, Stephen Louie
Use of the smeltCam as an efficient fish sampling alternative within the San Francisco Estuary
Resource managers often rely on long-term monitoring surveys to detect trends in biological data. However, no survey gear is 100% efficient, and many sources of bias can be responsible for detecting or not detecting biological trends. The SmeltCam is an imaging apparatus developed as a potential sampling alternative to long-term trawling gear surveys within the San Francisco Estuary, California, t
Authors
Brock Huntsman, Frederick Feyrer, Matthew Young
Recruitment dynamics of non-native largemouth bass within the Sacramento-San Joaquin delta
Largemouth bass (LMB; Micropterus salmoides) recruitment is limited by a critical developmental period during early life stages, but this mechanism may be less important within non-native habitats. We conducted boat electrofishing surveys in four tidal lakes of California’s Sacramento–San Joaquin Delta (SSJD) from 2010 to 2011 to describe introduced LMB recruitment dynamics. We evaluated growth, p
Authors
Brock Huntsman, Frederick Feyrer, Matthew Young, James A. Hobbs, Shawn Acuna, Joseph E. Kirsch, Brian Mahardja, Swee Teh
Science and Products
- Data
Largemouth bass population assessment within flooded islands of the Sacramento-San Joaquin Delta
Field and laboratory data collected for fishes sampled by boat electrofishing in the Sacramento-San Joaquin delta, CA. This data release includes all measured environmental parameters, body composition analyses, otoliths, and fish taxa included in the analysis. - Publications
Hydrodynamics and habitat interact to structure fish communities within terminal channels of a tidal freshwater delta
Terminal channels were historically a common feature of tidal delta ecosystems but have become increasingly rare as landscapes have been modified. Tidal hydrodynamics are a defining feature in tidal terminal channel ecosystems from which native aquatic communities have evolved. However, few studies have explored the relationship between fish community structure and hydrodynamics in these tidal terAuthorsBrock Huntsman, Matthew Young, Frederick Feyrer, Paul Stumpner, Larry R. Brown, Jon R. BurauJoint-species analysis reveals potential displacement of native fishes by non-native fishes within the Santa Ana River, California
Accurate estimates of abundance are a cornerstone for resource managers to make effective decisions for fish conservation. However, multiple sampling methods often are required to sample fish communities, and ignoring the detection process can create substantial bias in latent state parameter estimation (e.g., abundance, survival). We developed a joint-species N-mixture model that integrated snorkAuthorsBrock Huntsman, Larry R. Brown, Kai Palenscar, Chris Jones, Kerwin Russell, Heather Dyer, Brett Mills, Marissa L. Wulff, Jason MayRelative bias in catch among long-term fish monitoring surveys within the San Francisco Estuary
Fish monitoring gears rarely capture all available fish, an inherent bias in monitoring programs referred to as catchability. Catchability is a source of bias that can be affected by numerous aspects of gear deployment (e.g., deployment speed, mesh size, and avoidance behavior). Thus, care must be taken when multiple surveys—especially those using different sampling methods—are combined to answerAuthorsBrock Huntsman, Brian Mahardja, Samuel M. BashevkinDisentangling stationary and dynamic estuarine fish habitat to inform conservation: Species-specific responses to physical habitat and water quality in San Francisco Estuary
Estuaries represent critical aquatic habitat that connects surface water distributed between Earth’s landmasses and oceans. They are dynamic transitional ecosystems, which provide important habitat for fishes and other aquatic organisms. Effective conservation of species inhabiting estuaries requires knowledge of the habitat features that drive their abundance and distribution. We sought to elucidAuthorsFrederick Feyrer, Matthew Young, Brock Huntsman, Larry R. BrownInteragency Ecological Program long-term monitoring element review: Pilot approach and methods development (2020)
This report describes the first-year, pilot-phase of what is intended to be a larger, multiple-year review of all IEP core long-term monitoring elements (LTMEs). Here we hope to provide evidence that the review team arrangement and communication schedule was effective at developing a framework to objectively evaluate a suite of LTMEs. We focused on developing methods for an effective review, documAuthorsJereme W. Gaeta, Samuel M. Bashevkin, Frederick Feyrer, Brock Huntsman, Brian Mahardja, Steven D Culberson, Michael P Beakes, Stephanie Fong, Stephen LouieUse of the smeltCam as an efficient fish sampling alternative within the San Francisco Estuary
Resource managers often rely on long-term monitoring surveys to detect trends in biological data. However, no survey gear is 100% efficient, and many sources of bias can be responsible for detecting or not detecting biological trends. The SmeltCam is an imaging apparatus developed as a potential sampling alternative to long-term trawling gear surveys within the San Francisco Estuary, California, tAuthorsBrock Huntsman, Frederick Feyrer, Matthew YoungRecruitment dynamics of non-native largemouth bass within the Sacramento-San Joaquin delta
Largemouth bass (LMB; Micropterus salmoides) recruitment is limited by a critical developmental period during early life stages, but this mechanism may be less important within non-native habitats. We conducted boat electrofishing surveys in four tidal lakes of California’s Sacramento–San Joaquin Delta (SSJD) from 2010 to 2011 to describe introduced LMB recruitment dynamics. We evaluated growth, pAuthorsBrock Huntsman, Frederick Feyrer, Matthew Young, James A. Hobbs, Shawn Acuna, Joseph E. Kirsch, Brian Mahardja, Swee Teh