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U.S. Geological Survey, Northeast Region

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Forest- Data collected once using GIS prior to fish sampling. Our approach was to focus the study on smaller, headwater catchments because larger streams drained areas containing both hemlock and mixed hardwood forest, making forest-specific comparison intractable. In addition, most of these larger watersheds were impacted by humans (e.g., impoundments, agriculture, quarries) that could confound our assessment of the influence of hemlock. Even after limiting the study to headwater catchments, other possible confounding factors remained; we controlled for landscape variability (i.e., terrain and stream size) through the sampling design and we excluded others (i.e., minimum catchment area,beaver activity) through...
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This data release contains the U.S. salient statistics and world production data extracted from the CLAYS data sheet of the USGS Mineral Commodity Summaries 2024.
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This data release contains the U.S. salient statistics and world production data extracted from the THORIUM data sheet of the USGS Mineral Commodity Summaries 2024.
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This data release contains the U.S. salient statistics and world production data extracted from the FLUORSPAR data sheet of the USGS Mineral Commodity Summaries 2024.
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This data release contains the U.S. salient statistics and world production data extracted from the GALLIUM data sheet of the USGS Mineral Commodity Summaries 2024.
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