Found 12 datasets matching "USGS-EMA-LOW-SB SMC: Freshwater mussels".
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Hydroacoustic (sonar) data were collected for the Mississippi, St. Croix, and Minnesota Rivers for the development of high-resolution bathymetry and sidescan imagery. Small areas containing...
Search relevance: 135.95 | Views last month: 0 -
Hydroacoustic (sonar) data were collected for the Mississippi, St. Croix, and Minnesota Rivers for the development of high-resolution bathymetry and sidescan imagery. Small areas containing...
Search relevance: 135.13 | Views last month: 0 -
Many freshwater mussel species are critically imperiled, and propagation is essential for species‘ recovery. Fungal contamination can negatively affect in vitro propagation of freshwater mussels;...
Search relevance: 124.54 | Views last month: 0 -
The dwarf wedgemussel (Alasmidonta heterodon) is a federally endangered freshwater mussel that once ranged from New Brunswick to North Carolina, but now only exists in isolated populations...
Search relevance: 118.82 | Views last month: 0 -
This dataset is a digital surface model of the slope for six sites where known rock structures exist in the St. Croix River. Slope is the gradient, or rate of maximum change in elevation, and is...
Search relevance: 117.27 | Views last month: 0 -
This dataset is a digital image mosaic of the backscatter for five (of six) sites where known rock structures exist in the St. Croix River. Backscatter is the strength of the returned signal, or...
Search relevance: 115.60 | Views last month: 0 -
This dataset is a digital image mosaic of sidescan for six sites where known rock structures exist in the St. Croix River. Sidescan sonar emits conical or fan-shaped beam down across a wide angle...
Search relevance: 115.23 | Views last month: 0 -
The dwarf wedgemussel (Alasmidonta heterodon) is a federally endangered freshwater mussel that once ranged from New Brunswick to North Carolina, but now only exists in isolated populations...
Search relevance: 113.99 | Views last month: 0 -
This dataset is a digital surface of depth-averaged flow velocities for six sites where known rock structures exist in the St. Croix River. Acoustic Doppler Current Profilers (ADCP) are used to...
Search relevance: 112.99 | Views last month: 0 -
This dataset is a digital elevation model (DEM) of the bathymetry for six sites where known rock structures exist in the St. Croix River. The DEMs have a 10-cm resolution (Boom site is 0.5-m) to...
Search relevance: 112.70 | Views last month: 0 -
These data are digital hillshades of the bathymetry for five (of six) sites where known rock structures exist in the St. Croix River. Hillshades are shaded relief surfaces created by the...
Search relevance: 112.70 | Views last month: 0 -
This dataset is a digital surface model of the roughness for five (of six) sites where known rock structures exist in the St. Croix River. Roughness is the degree of irregularity of the surface...
Search relevance: 112.55 | Views last month: 0
