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State-wide data on fish populations were limited in Alaska for use in this assessment, as was a detailed spatial (mapping) framework that fully characterizes watersheds throughout the state at the time this assessment was conducted. Because of these factors, we modified our assessment methods to account for these limitations. Twenty-one landscape disturbance variables were assembled from medium-sized watersheds throughout the state (i.e., 12-digit hydrologic unit code watersheds). Variables were then assigned to one of six categories based on their disturbances to stream habitats. Categories include: urban land use, agricultural land use, point source pollution and water quality, barriers to fish movement, human...
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In the mostly arid Southwestern United States, water availability (hydrology – a key fish habitat process), wildfires, and grazing intensity are important disturbances that are known to have major, negative effects on fish habitats. While this assessment indicated that many of the streams in this region are in good condition, a number of key habitat variables (i.e. water availability, wildlife frequency and intensity, and grazing intensity) could not be directly included in this assessment because national datasets of these disturbances and their measured variable are unavailable. Their absence from this assessment, along with absences of other disturbances, has likely produced an overestimation of habitat condition...
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Relative condition of fish habitat in streams of the Eastern Gulf of Mexico States. Histogram shows percentage of total stream length in each condition class.
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Map of the risk of current fish habitat degradation of inland streams of the Mid-Atlantic States region.
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Map of the risk of current fish habitat degradation of inland streams of the Central Midwest States.
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This dataset represents results from this study attributed to the Hydrologic Unit Code (HUC) 12 watershed boundaries. Human impacts occurring throughout the Northeast and Midwest United States, including urbanization, agriculture, and dams, have multiple effects on the region’s streams which support economically valuable stream fishes. Changes in climate are expected to lead to additional impacts in stream habitats and fish assemblages in multiple ways, including changing stream water temperatures. To manage streams for current impacts and future changes, managers need region-wide information for decision-making and developing proactive management strategies. Our project met that need by integrating results...
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Map of the risk of current fish habitat degradation of inland streams of the Southwestern States.
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Map of the risk of current fish habitat degradation of inland streams of the Upper Midwest States.
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Map of the risk of current fish habitat degradation of inland streams of the Pacific Coast States.
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This dataset represents results from this study attributed to the NHDPlus catchments. Human impacts occurring throughout the Northeast and Midwest United States, including urbanization, agriculture, and dams, have multiple effects on the region’s streams which support economically valuable stream fishes. Changes in climate are expected to lead to additional impacts in stream habitats and fish assemblages in multiple ways, including changing stream water temperatures. To manage streams for current impacts and future changes, managers need region-wide information for decision-making and developing proactive management strategies. Our project met that need by integrating results of a current condition assessment...
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Map of the risk of current fish habitat degradation of inland streams of the Southern Plains States.
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Map of the risk of current fish habitat degradation of inland streams of Alaska (HUC-12).
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This dataset represents results from this study attributed to the NHDPlus stream reach segments. Human impacts occurring throughout the Northeast and Midwest United States, including urbanization, agriculture, and dams, have multiple effects on the region’s streams which support economically valuable stream fishes. Changes in climate are expected to lead to additional impacts in stream habitats and fish assemblages in multiple ways, including changing stream water temperatures. To manage streams for current impacts and future changes, managers need region-wide information for decision-making and developing proactive management strategies. Our project met that need by integrating results of a current condition...
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Map of the risk of current fish habitat degradation of inland streams of the Northeastern States region.
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Map of the risk of current fish habitat degradation of inland streams of the Eastern Gulf of Mexico States.
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Map of the risk of current fish habitat degradation of inland streams of the Northern Plains States.
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The U.S Geological Survey (USGS) is partnering with the National Fish Habitat Partnership (NFHP) to produce the 2015 report entitled, "Through a Fish's Eye: The Status of Fish Habitats in the United States 2015". The information contained within this item is a product of NFHP. The Bureau is neither responsible nor liable for the accuracy or the use of the scientific content within this item. This content is considered preliminary pending subsequent review and approval
    map background search result map search result map Eastern Gulf of Mexico States - Risk of Current Fish Habitat Degradation Map Central Midwest States - Risk of Current Fish Habitat Degradation Map Mid-Atlantic States - Risk of Current Fish Habitat Degradation Map Upper Midwest States - Risk of Current Fish Habitat Degradation Map Summary of Scientific Findings for Southwestern States Southwestern States - Risk of Current Fish Habitat Degradation Map Central Mississippi River States - Risk of Current Fish Habitat Degradation Map Pacific Coast States - Risk of Current Fish Habitat Degradation Map Alaska - Risk of Current Alteration Map (HUC-12) Southern Plains States - Risk of Current FIsh Habitat Degradation Map Northern Plains States - Risk of Current FIsh Habitat Degradation Map Hawaii - Risk of Current Fish Habitat Degradation Map Generalized Methodology for Stream Assessments of Alaska and Hawaii Mountain States - Risk of Current Fish Habitat Degradation Map Eastern Gulf of Mexico States Risk of Current Degradation Chart (Stream Length) Southeast Atlantic States - Risk of Current Fish Habitat Degradation Map Northeastern States- Risk of Current Fish Habitat Degradation Map Fishtail catch: Indices and supporting data characterizing the current (1961-2000) and future (1961-2000) risk to fish habitat degradation in the Northeast Climate Science Center region Fishtail huc12: Indices and supporting data characterizing the current (1961-2000) and future (2041-2080) risk to fish habitat degradation in the Northeast Climate Science Center region Fishtail reach: Indices and supporting data characterizing the current (1961-2000) and future (2041-2080) risk to fish habitat degradation in the Northeast Climate Science Center region Mid-Atlantic States - Risk of Current Fish Habitat Degradation Map Southeast Atlantic States - Risk of Current Fish Habitat Degradation Map Northern Plains States - Risk of Current FIsh Habitat Degradation Map Northeastern States- Risk of Current Fish Habitat Degradation Map Central Midwest States - Risk of Current Fish Habitat Degradation Map Central Mississippi River States - Risk of Current Fish Habitat Degradation Map Upper Midwest States - Risk of Current Fish Habitat Degradation Map Eastern Gulf of Mexico States - Risk of Current Fish Habitat Degradation Map Eastern Gulf of Mexico States Risk of Current Degradation Chart (Stream Length) Pacific Coast States - Risk of Current Fish Habitat Degradation Map Summary of Scientific Findings for Southwestern States Southwestern States - Risk of Current Fish Habitat Degradation Map Mountain States - Risk of Current Fish Habitat Degradation Map Southern Plains States - Risk of Current FIsh Habitat Degradation Map Hawaii - Risk of Current Fish Habitat Degradation Map Fishtail reach: Indices and supporting data characterizing the current (1961-2000) and future (2041-2080) risk to fish habitat degradation in the Northeast Climate Science Center region Fishtail catch: Indices and supporting data characterizing the current (1961-2000) and future (1961-2000) risk to fish habitat degradation in the Northeast Climate Science Center region Fishtail huc12: Indices and supporting data characterizing the current (1961-2000) and future (2041-2080) risk to fish habitat degradation in the Northeast Climate Science Center region Alaska - Risk of Current Alteration Map (HUC-12) Generalized Methodology for Stream Assessments of Alaska and Hawaii