Biologist
Email:
bhuntsman@usgs.gov
Office Phone:
916-278-3117
Location
Placer Hall
6000 J Street
Sacramento
, CA
95819-6129
US
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This dataset includes 2020 reach fish data and reach habitat data collected to support development of the upper Santa Ana River Habitat Conservation Plan for the Santa Ana Sucker (Catostomus santaanae) and the Arroyo Chub (Gila orcutti) in the Santa Ana River, California.
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We studied the impacts of drought and invasive trout on survival and productivity on Rio Grande cutthroat trout (Oncorhynchus clarkii virginalis, RGCT) populations. Rio Grande cutthroat trout is the southernmost subspecies of cutthroat trout and endemic to the Rio Grande, Canadian, and Pecos River basins of Colorado and New Mexico. The subspecies is reduced to less than 11% of its historic range with most populations occupying isolated high elevation headwater streams. One of the greatest threats to its survival is the effect that low stream flow due to drought will have on this coldwater trout living at the edge of its range. Our work will provide insight into the current and future threats of RGCT populations...
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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, 2020-2022, plus gillnetting in 2020. Samples were collected under a stratified random sampling design. Gillnetting involved short duration (~60 minute) sets of monofilament experimental gill nets. Boat electrofishing involved either single or repeated passes along an individual 300 m shoreline transect. Stomach contents data are from fishes...
Categories: Data;
Tags: Aquatic Biology,
California,
Central Valley Chinook Salmon,
Ecology,
Georgiana Slough, All tags...
Limnology,
Oncorhynchus tshawytscha,
Sacramento River,
Sacramento-San Joaquin Delta,
Steamboat Slough,
USGS Science Data Catalog (SDC),
United States,
Water Resources,
Wildlife Biology,
aquatic biology,
biota,
ecology,
environment,
inlandWaters,
predation,
salmon survival,
wetlands, Fewer tags
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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.
Categories: Data;
Tags: Aquatic Biology,
Aquatic Biology,
California,
Ecology,
Fish Ecology, All tags...
Largemouth Bass,
Micropterus salmoides,
San Francisco Bay-Delta,
San Joaquin and Sacramento Rivers,
USGS Science Data Catalog (SDC),
biota, Fewer tags
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Abstract (from Wiley Online Library): The impacts of climate change on cold‐water fishes will likely negatively manifest in populations at the trailing edge of their distributions. Rio Grande cutthroat trout (Oncorhynchus clarkii virginalis, RGCT) occupy arid south‐western U.S. streams at the southern‐most edge of all cutthroat trout distributions, making RGCT particularly vulnerable to the anticipated warming and drying in this region. We hypothesised that RGCT possess a portfolio of life‐history traits that aid in their persistence within streams of varying temperature and stream drying conditions. We used otolith and multistate capture–mark–recapture data to determine how these environmental constraints influence...
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