Classic U-shaped valley carved by retreating mountain glaciers. Many glacial features can be seen: cirques, horns, arete ridges, till, hanging valleys.
Aquatic animals; Aquatic environments; Biological control; Habitat conservation; Invasive species; Population control; Work of the Service;
This is a plan to prevent zebra mussels and other aquatic nuisance species from spreading westward. This document includes background on the issue, including the current and potential impacts, ecological, economic and otherwise, the spread of these...
Aquatic animals; Aquatic environments; Environmental education; Fisheries management; Fishes; Fish hatcheries; Habitat conservation; Podcast; Public Lecture;
Phil Pister retired in February 1990 following 38 years as a fishery biologist with the California Department of Fish and Game. He studied wildlife conservation and zoology under A. Starker Leopold at the University of California (Berkeley) and...
This is the 1998 status assessment of the scaleshell mussel in the United States. It includes biological information on the species, distribution status information and detailed status figures.
This is a status assessment of the double-crested cormorant in North America as of 2001. It includes general information on the bird, biological information and area-specific population information for throughout North America.
Nevada Department of Wildlife biologists and volunteers working to capture and relocate bighorn sheep in the Muddy Mountains to enhance populations in the Meadow Valley area of Nevada.
Bear River Migratory Bird Refuge, Brigham City, Utah 74,000 acres of river delta spill across the Great Salt Lake valley welcoming hundreds of species of waterfowl, shorebirds and raptors. Goldeneye, lesser scaups and American wigeon are just a few...
