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Aerial photomosaic of John Day Reservoir, 1966
A two-week field operation was conducted in the John Day Reservoir on the Columbia River to image the floor of the pool, to measure the distribution and thickness of post-... -
Taxonomic validation for amphibian species on the U.S. Fish and Wildlife Serv...
A list of 120 amphibian and reptile taxa proposed for listing as endangered or threatened for the U.S. Fish and Wildlife Service was reviewed. These taxa were placed in category... -
Coastal Wetland Vegetation Analysis (Metzger Marsh)
Coastal wetlands of the Great Lakes are subject to extreme fluctuations of water levels and to erosion from wave action during storms. Both processes are natural, and under... -
Taxonomic Validation for Freshwater Bivalve and Gastropod Species on the U.S....
This report addresses the taxonomic validity of 63 taxa of freshwater bivalves (Sphaeriidae and Unionidae) and 75 species of freshwater gastropods (Ancylidae, Planorbidae,... -
Aerial photomosaic of John Day Reservoir, 1966
A two-week field operation was conducted in the John Day Reservoir on the Columbia River to image the floor of the pool, to measure the distribution and thickness of post-... -
Taxonomic Validation for Crustacean species on the U.S. Fish and Wildlife Ser...
The species indicated on the list are valid, none are synonymous with other taxa, and the taxonomic status of each represents the present understanding of their taxonomic... -
Aerial photomosaic of John Day Reservoir, 1966
A two-week field operation was conducted in the John Day Reservoir on the Columbia River to image the floor of the pool, to measure the distribution and thickness of post-...
E' possibile inoltre accedere al registro usando le API (vedi Documentazione API).