Found 49 datasets matching "Imperiled".
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Conservation of imperiled species is frequently challenged by insufficient knowledge of life history and the environmental factors that affect various life stages. The larvae (glochidia) of most...
Search relevance: 79.82 | Views last month: 0 -
This EnviroAtlas dataset includes analysis by NatureServe of species that are Imperiled (G1/G2) or Listed under the U.S. Endangered Species Act (ESA) by 12-digit Hydrologic Units (HUCs). The...
Search relevance: 78.74 | Views last month: 0 -
We examined species boundaries within an imperiled group of freshwater mussels in the genus Cyclonaias (Bivalvia: Unionidae) using morphometrics, molecular phylogenetics, and multispecies...
Search relevance: 62.82 | Views last month: 0 -
Freshwater mussels (Unionidae) are among the most imperiled groups of organisms in the world. Most unionids lack basic information regarding species distributions, life history characteristics,...
Search relevance: 51.17 | Views last month: 0 -
We generated multilocus DNA sequence data and traditional morphometric measurements to evaluate species boundaries in Fusconaia mitchelli. We sequenced three loci: the protein-coding mitochondrial...
Search relevance: 49.32 | Views last month: 0 -
Approximately 90% of pine rockland habitat in South Florida and the Florida Keys, USA, has been lost, fragmented, and degraded due to urbanization and other anthropogenic disturbances. Low-lying...
Search relevance: 43.46 | Views last month: 0 -
Grassland birds are among the most imperiled bird guilds in North America. Scaled quail (Callipepla squamata) are a semi-arid grassland bird whose populations have declined over the past half...
Search relevance: 39.46 | Views last month: 0 -
Grassland birds are among the most imperiled bird guilds in North America. Scaled quail (Callipepla squamata) are a semi-arid grassland bird whose populations have declined over the past half...
Search relevance: 39.17 | Views last month: 0 -
Grassland birds are among the most imperiled bird guilds in North America. Scaled quail (Callipepla squamata) are a semi-arid grassland bird whose populations have declined over the past half...
Search relevance: 36.50 | Views last month: 3 -
The risk of lampricide applications (such as 4-Nitro-3-(trifluoromethyl)phenol, TFM) to non-target fauna continues to be a concern within the Great Lakes Fishery Commission sea lamprey control...
Search relevance: 35.91 | Views last month: 0 -
Many taxa of North American unionid mussels are imperiled due to biofouling by invasive dreissenid mussels. Here, we report on biofouling rates of unionid mussels suspended in cages during the...
Search relevance: 34.45 | Views last month: 0 -
This data release includes a collection of photographs and video clips. Above water observations were taken with with a Nikon D5300 digital camera and underwater observations were taken with a...
Search relevance: 34.31 | 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: 32.60 | 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: 32.51 | 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: 30.65 | 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: 30.16 | 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: 29.69 | 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: 29.27 | Views last month: 0 -
Grassland birds are among the most imperiled bird guilds in North America. Scaled quail (Callipepla squamata) are a semi-arid grassland bird whose populations have declined over the past half...
Search relevance: 29.08 | Views last month: 0 -
This dataset provides location information and some limited attributes of known and potential ciénegas in the Madrean Archipelago ecoregion and closely surrounding area. This was created using...
Search relevance: 28.99 | Views last month: 0
