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Showing 1 to 16 of 16 for “"anadromous fish"”.
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Impacts to Anadromous Fish through Groundwater Extraction
… climate. The state also hosts populations of anadromous fish that are otherwise found exclusively in the wetter Pacific northwest. Groundwater has historically helped maintain baseflow in the summer and fall low-flow periods and acted as a natural buffer against the regular droughts that occur …
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Movement and survival of chinook salmon fry stocked in a stream with natural barriers to anadromous fish migration
… salmonid rearing habitat, but was devoid of anadromous fish upstream of the barrier falls near tidewater. Approximately 50,000 and 260,000 chinook fry were stocked into Indian River in 1986 and 1988, respectively. The stream was divided into reaches which were stocked with equal numbers of …
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Spatial and Temporal Patterns of Anadromous Fish Passage at Boshers Dam Vertical Slot Fishway on the James River, Richmond, Virginia
Boshers dam vertical slot fishway, James River, Virginia, U.S.A., opened in 1999 and restored connectivity to 543.3 km of spawning habitat for anadromous fish. The fishway also allowed local movement of resident species. Video observation from 2001-2005 was used to evaluate environmental predictors …
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Lessons to learn from all out invasion: life history of brown trout (Salmo trutta) in a Patagonian River
… for comparison between sites supporting resident fish with those supporting anadromous fish. Additionally, brown trout and native fish distribution and abundance was described using a combination of local knowledge, angling, electrofishing, and netting. Results indicate that brown trout developed …
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Lessons to learn from all out invasion: life history of brown trout (Salmo trutta) in a Patagonian River
… for comparison between sites supporting resident fish with those supporting anadromous fish. Additionally, brown trout and native fish distribution and abundance was described using a combination of local knowledge, angling, electrofishing, and netting. Results indicate that brown trout developed …
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The Swift Water Place: Water Quality, Fish Ecology, and Hydropower in the Merrimack River since the Time of Thoreau
… Dam at Lawrence in 1847 spelled the end of the anadromous fish runs that had populated the Merrimack for centuries. Salmon restoration proceeded for three decades after the Civil War until fish passage failed. Later, water filtration plants allowed communities to draw clean water from the …
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An Ecological Comparison Between Resource Subsidies: Pacific Lamprey (<i>Entosphenus tridentatus</i>) and Pacific Salmon (<i>Oncorhynchus</i> spp.)
… streams received annual returns of spawning anadromous fish that provided resource subsidies in the form of marine-derived nutrients (MDN), thus driving stream food web productivity. To date, many studies in the PNW have focused on Pacific salmon (<em>Oncorhynchus </em>spp.) as a resource …
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CHARACTERIZATION OF MICROSATELLITE LOCI AND PILOT POPULATION GENETIC ANALYSIS IN HICKORY SHAD, ALOSA MEDIOCRIS
… is a relatively understudied species of the anadromous fish sub-family Alosinae. This study, the first population genetic analysis of this species, employed 12 neutral microsatellite loci to estimate genetic diversity and population structure in tributaries of lower Chesapeake Bay, Virginia …
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The Relative Contribution of Hudson River Tributaries to River Herring Spawning Dynamics
… the relative tributary contribution to anadromous fish spawning dynamics is irrefutably important when prioritizing habitat enhancement, restoration and management decisions (Everly and Boreman, 1999). Collecting sound baseline data becomes critical when seeking out the most significant …
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Filling Conservation Gaps For Gulf Sturgeon (Acipenser desotoi) Using Specialized Acoustic Transmitters
… desotoi</em>) are a federally threatened, anadromous fish found in seven river systems along the northern Gulf of Mexico. While not managed as distinct population segments, GS are divided into western (WPU) and eastern (EPU) populations based on the location of their natal river in relation …
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Genetic Population Structure and Effective Number of Breeders in Systems Across the Range of the Gulf Sturgeon
… oxyicnhus desotoi</em>) are a large, anadromous fish belonging to an ancient lineage that diverged as early as 400 MYA. Overfishing for meat and caviar during the early 1900’s reduced their range and abundance and continued habitat destruction and mortality have limited their ability …
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Population Parameter Estimation and Stable Isotope Analysis of Gulf Sturgeon (Acipenser oxyrinchus desotoi) in the Pascagoula River
… oxyrinchus desotoi</em>, are a threatened, anadromous fish species in the northern Gulf of Mexico. Their range is from the Pearl River, LA, in the west to the Suwannee River, FL, in the east with a longitudinal divide at Mobile Bay, AL, creating a western population unit (WPU) and an eastern …
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Aspects Of Reproduction And Diet In A Coastal South Carolina Population Of Longnose Gar, Lepisosteus Osseus
… Carolina Department of Natural Resources (SCDNR) Anadromous Fish Group monitoring program for shad (Alosa sapidissima) and sturgeon (Acipenser brevirostrum and Acipenser oxyrinchus) during Jan-Jul 2007 and May-Sep 2008 (n=444). The aim of this study was to assess basic ecological aspects …
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Impacts of Spawning Sockeye Salmon (ONCORHYNCHUS NERKA) on Benthic Macroinvertebrate Production in the White River, WA
… production. The Cascade Columbia Fisheries Enhancement Group (CCFEG) is evaluating whether stream nutrient enhancement might benefit struggling salmon populations in the Wenatchee River Watershed. To evaluate the potential benefit of enhancement, the Wenatchee Nutrient Assessment …
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Movement ecology of two threatened anadromous species, twaite shad Alosa fallax and sea lamprey Petromyzon marinus, revealed by acoustic telemetry.
… declines and extirpations of once-abundant anadromous species. Understanding the movement ecology of anadromous species during all phases of their lifecycle is vital to understand, predict and mitigate the impacts of fragmentation. This is especially crucial for groups such as the Alosinae …
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Habitat modeling in perennial and non-perennial rivers: developments and applications
L'abstract è presente nell'allegato / the abstract is in the attachment