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Page 2966, results 74126 - 74150

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U.S. Geological Survey Activities Related to American Indians and Alaska Natives Fiscal Year 2002
Water Resources Division, U.S. Geological Survey
2002, Report
Information is a resource for Native American governments, communities, organizations, and people. The U.S. Geological Survey (USGS) provides technical expertise, reports, and other impartial information sources that benefit Native Americans interested in subsistence issues, water, land use, and the health of many parts of the environment. Native self-sufficiency, economic development,...
The occurrence of Mesenchytraeus (Enchytraeidae: Oligochaeta) in riffle habitats of north-west American rivers, with description of a new species
Brenda Healy, Steven V. Fend
2002, Journal of Natural History (36) 15-23
Mesenchytraeus species are widespread and often abundant in rivers of northwest USA where they are associated with cobble-gravel beds in fast-running water and particularly with riffle habitats. Mesenchyraeus rhithralis n. sp. was the most frequent and was often the dominant macroinvertebrate. The species is characterized by the presence of primary septal glands at...
Property-transfer models
R. Haverkamp, John R. Nimmo, P. Reggiani
2002, Book chapter, Methods in soil analysis: Part 4 physical methods
No abstract available....
Temperature history of Coregonus artedi in the St. Marys River, Laurentian Great Lakes, inferred from oxygen isotopes in otoliths
Zeina Joukhadar, W.P. Patterson, T. N. Todd, G.R. Smith
2002, Book chapter, Biology and management of Coregonid fishes --1999
The population of Coregonus artedi in the St. Marys River, between lakes Superior and Huron, was sampled and otoliths were analyzed for oxygen isotopic composition to determine whether the fish are residents in the St. Marys River and its warm bays or migrants to and from cold Lake Huron. Otoliths...
Yellowstone grizzly bear investigations: Annual report of the Interagency Grizzly Bear Study Team, 2001
Charles C. Schwartz, Mark A. Haroldson, editor(s)
2002, Report
The contents of this Annual Report summarize results of monitoring and research from the 2001 field season. The report also contains a summary of nuisance grizzly bear (Ursus arctos horribilis) management actions. In addition to our normal monitoring, we completed an array of studies addressing the potential impacts of winter recreation...
Reintroducing Pitcher's Thistle
Timothy J. Bell, Marlin Bowles, Jenny McBride, Kayri Havens, Pati Vitt, Kathryn McEachern
2002, Endangered Species Bulletin (27) 14-15
No abstract available at this time...
Comparative effects of climate on ecosystem nitrogen and soil biogeochemistry in U.S. national parks. FY 2001 Annual Report (Res. Rept. No. 94)
R. Stottlemyer, R. Edmonds, L. Scherbarth, K. Urbanczyk, H. Van Miegroet, J. Zak
2002, Report
In 1998, the USGS Global Change program funded research for a network of Long-Term Reference Ecosystems initially established in national parks and funded by the National Park Service. The network included Noland Divide, Great Smoky Mountains National Park, Tennessee; Pine Canyon, Big Ben National park, Texas; West Twin Creek,...
Cascading effects of fire exclusion in Rocky Mountain ecosystems: A literature review
R.E. Keane, K.C. Ryan, T.T. Veblen, Craig D. Allen, J. Logan, B. Hawkes
2002, U.S. Forest Service General Technical Report 91
The health of many Rocky Mountain ecosystems is in decline because of the policy of excluding fire in the management of these ecosystems. Fire exclusion has actually made it more difficult to fight fires, and this poses greater risks to the people who fight fires and for those who...
Food limitation and the recovery of sea otters following the 'Exxon Valdez' oil spill
Thomas A. Dean, James L. Bodkin, Allan K. Fukuyama, Stephen C. Jewett, Daniel H. Monson, Charles E. O’Clair, Glenn R. VanBlaricom
2002, Marine Ecology Progress Series (241) 255-270
We examined the potential role of food limitation in constraining the recovery of sea otters Enhydra lutris in Prince William Sound, Alaska, following the 'Exxon Valdez' oil spill. The spill resulted in the removal of a large number of sea otters in 1989, and as of 1998, the portion of...
Peak fire temperatures and effects on annual plants in the Mojave Desert
Matthew L. Brooks
2002, Ecological Applications (12) 1088-1102
Very little is known about the behavior and effects of fire in the Mojave Desert, because fire was historically uncommon. However, fire has become more frequent since the 1970s with increased dominance of the invasive annual grasses Bromus rubens and Schismus spp., and land managers are concerned about...
The Story Continues. Closing chapter
N.L. Stephenson
R.J. Hartesveldt, H.T. Harvey, H.S. Shellhammer, R.E. Stecker, editor(s)
2002, Book chapter, Giant Sequoias
No abstract available at this time...