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Individual point estimates of stream density by juvenile salmonid species in two small tributaries to the Salmon River, Lake Ontario, New York were recorded. Enumeration of salmonid species was observed using a backpack electrofisher in order to identify fish species. Stream density estimates were calculated using stream width measurements taken at equally spaced transects. Comparisons of species densities between the two streams were analyzed to infer competition or segregation.
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In 2005, the Department of Fisheries and Oceans (DFO) adopted Canada’s Policy for the Conservation of Wild Salmon Policy (the WSP) (DFO 2005). Implementation of the WSP consists of six strategies, the first of which requires the standardized monitoring of wild salmon status. Standardized monitoring begins with the identification of species-specific Conservation Units or CUs. The CUs serve two roles under the WSP. First, each CU is, in some sense, a significant element of biodiversity that the WSP seeks to conserve and manage. Second, each CU is a unit for reporting on the success (or failure) of actions taken under the WSP to conserve wild Pacific salmon. Subsequent steps in the Policy’s implementation, including...
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Region(s) of distribution of Coho Salmon (Oncorhynchus kisutch) (Walbaum, 1792) in the Arctic as digitized for U.S. Geological Survey Scientific Investigations Report 2016-5038. For details on the project and purpose, see the report at https://doi.org/10.3133/sir20165038. Complete metadata for the collection of species datasets is in the metadata document "Dataset_for_Alaska_Marine_Fish_Ecology_Catalog.xml" at https://doi.org/10.5066/F7M61HD7. Source(s) for this digitized data layer are listed in the metadata Process Steps section. Note that the original source may show an extended area; some datasets were limited to the published map boundary. Distributions of marine fishes are shown in adjacent Arctic seas where...
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Here we describe one conservation tool that will help to identify particularly significant river basins of the North Pacific for the conservation of salmon: the first Pacific-Rim wide assessment of salmon populations at a consistent scale. In conjunction with a scientific advisory panel and a peer review workshop we developed four criteria for the Pacific Salmon Conservation Assessment (PSCA) to provide an indication of aquatic ecosystem and salmon population resilience at the basin scale. These criteria are salmon abundance, diversity, hatchery influence, and landscape suitability. Highly abundant salmon populations have more “cushion” with which to absorb anthropogenic or natural disturbance (Quigley and...
The NPR basins were ranked according to regional patterns of environmental stress for salmon under current and projected future (to 2100) climate conditions. The basin rankings account for the relative abundance and distribution of freshwater habitats in each basin and include dynamic river flow and temperature simulations as indicators of water quality. A salmon stress index was developed based on temperature thresholds for spawning, incubation, and rearing for individual salmon species. The salmon stress ranking was coupled with the sub-watershed physical complexity ranking to develop a watershed vulnerability index for individual salmon species. Chinook and Coho rankings are highlighted below Each variable was...
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This dataset consists of two tables with the results from two manipulative thermal experiments with juvenile coho salmon (May 2021) and juvenile Chinook salmon (May 2020) and include 1) gene transcription results and heat shock protein 70 abundance in coho salmon and Chinook salmon and 2) water temperatures to which fish were exposed during the experiment.
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These data are intended for use in a variety of applications where fish distribution and activity is important. Note that the StreamNet database contains distribution information for numerous species. Within the source database, overlap does not exist for a particular species/run/subrun combination. See information under the spatial process log for specific information regarding the query that was used to construct this particular feature class.
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State of the Salmon GIS staff appended, cleaned, and clipped the basins to the North Pacific extent area. This coverage was then edited, by manual digitizing, checking accuracy against a 1:1,000,000 streams coverage, digital elevation models, and 4th field watershed boundaries where available. This process mostly entailed eliminating erroneous inclusion and exclusion of upper stream reaches within Hydro1k boundaries. When more detailed streams were consulted in the Pacific Northwest, Hydro1k basins could have been refined further and were in the cases when it affected distribution of salmonids at the time of processing (Summer 2004). This finer resolution stream data was not used extensively to maintain a consistent...


    map background search result map search result map StreamNet Generalized Fish Distribution - Anadromous Species British Columbia Salmon Conservation Units Marine Arctic polygon distribution of Coho Salmon (Oncorhynchus kisutch) (Walbaum, 1792) Gene Transcription and Heat Shock Protein 70 Abundance in Juvenile Hatchery Reared Coho Salmon and Chinook Salmon during a Manipulative Thermal Experiment, Anchorage, Alaska 2020-2021 Juvenile Salmonid Densities in Orwell Brook and Trout Brook, New York 2014-2023 Juvenile Salmonid Densities in Orwell Brook and Trout Brook, New York 2014-2023 StreamNet Generalized Fish Distribution - Anadromous Species British Columbia Salmon Conservation Units Marine Arctic polygon distribution of Coho Salmon (Oncorhynchus kisutch) (Walbaum, 1792)