A rugged, whitewater river flowing northward through deep canyons, the New River is among the oldest rivers on the continent. New River Gorge National River in West Virginia encompasses over 70,000 acres of land along the New River, is rich in cultural and natural history, and offers an abundance of scenic and recreational opportunities.
Big Southern Butte is one of two domes rising from a sea of basalt near the center of the eastern Snake River Plain in Idaho. The butte is one of the largest volcanic domes in the world, but at 300,000 years old it is also one of the youngest. Hikers who trek to the 7,550-foot high summit are rewarded with spectacular panoramic views. Photo by Devin Englestead, BLM Upper Snake Wildlife Biologist.
First light at Bosque del Apache National Wildlife Refuge in New Mexico. Established in November 22, 1939, the refuge has provided a critical stopover and wintering spot for thousands of sandhill cranes, geese and other waterfowl for 75 years. Bosque del Apache's sandhill crane population has multiplied from 18 birds in the 1840s to more than 20,000 birds today. Photo by Kim Hang Dessoliers (www.sharetheexperience.org).
DOINews: Research Highlight: Vulnerability Assessment for Threatened Bull Trout
Range-wide climate vulnerability assessment for threatened bull trout
Principal Investigator: Jason Dunham, Supervisory Aquatic Ecologist, U.S. Geological Survey
Image Credit: Joel Sartore/National Geographic Stock with Wade Fredenberg
The threatened bull trout (Salvelinus confluentus) depends more on cold water than any other species of salmon or trout in the Northwest. Bull trout can also be sensitive to floods that disturb eggs and fry that incubate in stream gravel nests over the winter. Climate warming is likely to spell trouble for bull trout if it leads to warming of stream temperatures and more rain and flooding during the winter. We also know that bull trout are threatened by existing human land and water uses, as well as non-native trout species that can compete with and sometimes interbreed with them. The challenge in this study is to address these different threats across the vast area where bull trout live in the Northwest, including Oregon, Washington, Idaho, Nevada, and Montana. To this end we are mapping the habitats where bull trout live, and measuring the importance different threats across the species' range in the Northwest. The results of this work will allow us to better understand where different threats are operating to influence bull trout and help to identify appropriate conservation actions to ensure the bull trout can persist in the face of climate change.