Limnology of Shallow Lakes in the Yukon Flats National Wildlife Refuge, Interior Alaska

U.S. Fish & Wildlife Service Contaminants as Contributing Factors to Wood Frog Abnormalities on the Kenai National Wildlife Refuge, Alaska

Deformed amphibians have been observed in the Kenai National Wildlife Refuge, Alaska. Environmental variables such as contaminants, ultraviolet radiation [UV], or parasites may cause deformities. It is important to identify the environmental cause of deformities in order that effective management strategies can be implemented to enable the recovery of affected populations. To determine whether ...

Climate change adaptation for the US National Wildlife Refuge System.

Since its establishment in 1903, the National Wildlife Refuge System (NWRS) has grown to 635 units and 37 Wetland Management Districts in the United States and its territories. These units provide the seasonal habitats necessary for migratory waterfowl and other species to complete their annual life cycles. Habitat conversion and fragmentation, invasive species, pollution, and competition for w...

Sediment quality in freshwater impoundments at Savannah National Wildlife Refuge.

Freshwater impoundments at Savannah National Wildlife Refuge (NWR), South Carolina, provide an important habitat for wildlife species, but degraded sediment quality in the Savannah River downstream of the discharge from two impoundments have caused concern about potential contaminant problems within the impoundments. The quality of sediments from five impoundments (impoundments no. 1, 2, 6, 7, ...

Limnology of the Great Lakes of Nicaragua

Recreational Carrying Capacity of Lake Umbagog National Wildlife Refuge

Recreational carrying capacity addresses the issue of how much and what types of recreation can be accommodated in parks and related areas without unacceptable impacts. Contemporary approaches to carrying capacity rely on formulation, monitoring, and management of indicators and standards of quality. Recreational carrying capacity of Lake Umbagog National Wildlife Refuge, located in northern Ne...