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The Crystal Darter (Crystallaria asprella) requires large, clear-water streams with clean sand and gravel bottoms and moderate to swift currents. It is intolerant of siltation and other forms of pollution from various land use practices. Direct habitat degradation from damming, channelization, and dredging has also reduced habitat for this species. Remaining populations have become isolated from one another by dams and impoundments. The Mississippi River most likely no longer serves as a usable corridor for the Crystal Darter because of the silt load. The isolated local populations are then vulnerable to single destructive events such as toxic chemical spills.
This dataset represents a species habitat distribution map for Mexican Black-headed Snake (Tantilla atriceps) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Sidewinder (Crotalus cerastes) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Gulf Coast Smooth Softshell (Apalone mutica calvata) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Sonoran Mud Turtle (Kinosternon sonoriense) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Southern Watersnake (Nerodia fasciata) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Tiger Rattlesnake (Crotalus tigris) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Yellow-footed Gull (Larus livens) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Black-whiskered Vireo (Vireo altiloquus) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Red Hills Salamander (Phaeognathus hubrichti) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Pine Siskin (Carduelis pinus) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Nelson's Antelope Squirrel (Ammospermophilus nelsoni) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Wyoming Ground Squirrel (aureus) (Urocitellus elegans aureus) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for New Mexico Whiptail (Aspidoscelis neomexicana) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Ringed Salamander (Ambystoma annulatum) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Arizona Mud Turtle (Kinosternon arizonense) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Banded Rock Lizard (Petrosaurus mearnsi) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Brown Vinesnake (Oxybelis aeneus) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Canyon Lizard (Sceloporus merriami) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
This dataset represents a species habitat distribution map for Colorado Checkered Whiptail (Aspidoscelis neotesselata) within the conterminous United States (CONUS) based on 2001 ground conditions. This habitat map was created by applying a deductive habitat model to remotely-sensed data layers within the species' known range. See Gap Analysis Project Species Habitat Maps for more information regarding model process and user constraints. For species specific model information, see the attached Species Habitat Model Report.
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