Stratton Sagebrush Hydrology Study Area: An annotated bibliography of research conducted 1968-1990
Leah M. Burgess, Kathryn A. Schoenecker
2004, Open-File Report 2004-1291
This annotated bibliography provides an overview of research projects conducted on the Stratton Sagebrush Hydrology Study Area (Stratton) since its designation as such in 1967. Sources include the Rocky Mountain Forest and Range Experiment Station records storage room, Laramie, Wyoming, the USGS and USFS online reference libraries, and scientific journal...
The travel cost method and the economic value of leisure time
Aaron J. Douglas, Richard L. Johnson
2004, International Journal of Tourism Research (6) 365-374
Recent estimates of high values for tourist related recreation USA amenity values indicate that allocation of basic water and terrestrial resources to recreation activities should be given precedence over conventional market oriented activities that often degrade or even extirpate the resource. We discuss at length the travel cost method (TCM),...
Colorado Canyons National Conservation Area 2003 visitor use survey: Completion report
Phadrea Ponds, Shana C. Gillette, Lynne Koontz
2004, Open-File Report 2004-1281
This report represents the analysis of research conducted by the U.S. Geological Survey (USGS) for the Bureau of Land Management (BLM). The purpose is to provide socio-economic and recreational use information that can be used in the development of a Resource Management Plan (RMP) for the Colorado Canyons National Conservation...
Fort Collins Science Center: Aquatic Systems and Technology Applications
Dave Hamilton
2004, Fact Sheet 2004-3149
Land and water management agencies are responsible for restoring and conserving our nation's natural resources. However, they face increasing, often competing demands for those resources, which can result in alteration or loss of critical riverine, riparian, wetland, and terrestrial habitats. Land and resource managers may be in federal, state, or...
Using stable isotopes to associate migratory shorebirds with their wintering locations in Argentina
A.H. Farmer, M. Abril, M. Fernandez, J. Torres, C. Kester, C. Bern
2004, Ornitologia Neotropical (15) 377-384
We are evaluating the use of stable isotopes to identify the wintering areas of Neotropical migratory shorebirds in Argentina. Our goal is to associate individual birds, captured on the breeding grounds or in migration with specific winter sites, thereby helping to identify distinct areas used by different subpopulations. In January...
American alligator ecology and monitoring for the Comprehensive Everglades Restoration Plan
Kenneth G. Rice, Frank Mazzotti
2004, Fact Sheet 2004-3105
No abstract available at this time...
Estimating the use of morphometric measurements from museum specimens for sex determination in Mountain Plovers (Charadrius montanus)
W.M. Iko, S.J. Dinsmore, F.L. Knopf
2004, Western North American Naturalist (64) 492-496
The Mountain Plover (Charadrius montanus) is a shorebird species endemic to the dry, terrestrial ecosystems of the Great Plains and southwestern United States. Breeding Bird Survey data suggest that Mountain Plover populations have declined by >60% in the last 30 years. A better understanding of the population dynamics of the...
Fort Collins Science Center: Policy Analysis and Science Assistance
Berton L. Lamb
2004, Fact Sheet 2004-3144
Most resource management decisions involve the integrated use of biological, sociological, and economic information. Combining this information provides a more comprehensive basis for making effective land management and conservation decisions. Toward this end, scientists in the Policy Analysis and Science Assistance Branch (PASA) of the Fort Collins Science Center (FORT)...
Effect of temporal resolution on the accuracy of ADCP measurements
J. A. Gonzalez-Castro, K. Oberg, James J. Duncker
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
The application of acoustic Doppler current profilers (ADCP's) in river flow measurements is promoting a great deal of progress in hydrometry. ADCP's not only require shorter times to collect data than traditional current meters, but also allow streamflow measurements at sites where the use of conventional meters is either very...
Quality assurance report - Loch Vale watershed, 1999-2002
Jorin A. Botte, Jill Baron
2004, Open-File Report 2004-1306
The National Park Service initiated the Loch Vale Watershed (LVWS) project in 1980 with funding from the Aquatic Effects Research Program of the National Acid Precipitation Assessment Program. Long-term ecological research and monitoring address watershed-scale ecosystem processes, particularly as they respond to atmospheric deposition and climate variability. Monitoring of meteorological,...
Mass-dependent fractionation of selenium and chromium isotopes in low-temperature environments
T.M. Johnson, T.D. Bullen
2004, Reviews in Mineralogy and Geochemistry (55) 289-317
No abstract available....
2002 Water-Table Contours of the Mojave River and the Morongo Ground-Water Basins, San Bernardino County, California
G.A. Smith, C.L. Stamos, S.K. Predmore
2004, Report
The Mojave River and Morongo ground-water basins are in the southwestern part of the Mojave Desert in southern California. Ground water from these basins supplies a major part of the water requirements for the region. The continuous population growth in this area has resulted in ever-increasing demands on local ground-water...
Perspective on eastern migration studies: Stopover ecology of migratory landbirds in the Gulf Coast region
W.C. Barrow Jr., L.A. Johnson Randall
2004, Book chapter, Migration stopover ecology of western avian populations: A southwestern migration workshop (Open-File Report 2004-1452)
Millions of Nearctic-Neotropical landbirds move through the coastal habitats of the Gulf of Mexico each spring and autumn as they migrate across and around the Gulf. Migration routes in the Gulf region are not static and they shift year to year and season to season according to prevailing wind patterns....
Enhanced gas-phase transport in a deep unsaturated zone, Amargosa Desert (U.S.A.)
Michelle Ann Walvoord, David A. Stonestrom
Karel Kovar, Z. Hrkal, J. Bruthans, editor(s)
2004, Conference Paper, International conference on finite element models, MODFLOW, and more: Solving groundwater problems
No abstract available....
Sea otter studies in Glacier Bay National Park and Preserve
James L. Bodkin, Brenda E. Ballachey, Kimberly A. Kloecker, George G. Esslinger, Daniel H. Monson, H.A. Coletti, James A. Estes
2004, Report
No abstract available....
Potential causes for amphibian declines in Puerto Rico
P.A. Burrowes, R.L. Joglar, David E. Green
2004, Herpetologica (60) 141-154
We monitored 11 populations of eight species of Eleutherodactylus in Puerto Rico from 1989 through 2001. We determined relative abundance of active frogs along transects established in the Caribbean National Forest (El Yunque), Carite Forest, San Lorenzo, and in the vicinity of San Juan. Three species (Eleutherodactylus karlschmidti, E. jasperi,...
Effects of environmental change on groundwater recharge in the Desert Southwest
Fred M. Phillips, Michelle Ann Walvoord, Eric E. Small
James F. Hogan, Fred M. Phillips, Bridget R. Scanlon, editor(s)
2004, Water Science and Application 9
Climate and other environmental conditions have varied in the past, and will almost certainly vary significantly in the near future. The response of groundwater recharge to changes in environmental conditions is thus a matter of active concem for water-resources management. The major mechanisms for this response of recharge are three-fold....
Mineralogy at Meridiani Planum from the Mini-TES experiment on the opportunity rover
P. R. Christensen, M.B. Wyatt, T.D. Glotch, A.D. Rogers, S. Anwar, R. E. Arvidson, J. L. Bandfield, D.L. Blaney, C. Budney, W. M. Calvin, A. Fallacaro, R.L. Fergason, N. Gorelick, T.G. Graff, V.E. Hamilton, A. G. Hayes, J. R. Johnson, A.T. Knudson, H.Y. McSween Jr., G.L. Mehall, L.K. Mehall, J.E. Moersch, R.V. Morris, M. D. Smith, S. W. Squyres, S. W. Ruff, M.J. Wolff
2004, Science (306) 1733-1739
The Miniature Thermal Emission Spectrometer (Mini-TES) on Opportunity investigated the mineral abundances and compositions of outcrops, rocks, and soils at Meridiani Planum. Coarse crystalline hematite and olivine-rich basaltic sands were observed as predicted from orbital TES spectroscopy. Outcrops of aqueous origin are composed of 15 to 35% by volume magnesium...
The microbial arsenic cycle in Mono Lake, California
Ronald S. Oremland, John F. Stolz, James T. Hollibaugh
2004, FEMS Microbiology Ecology (48) 15-27
Significant concentrations of dissolved inorganic arsenic can be found in the waters of a number of lakes located in the western USA and in other water bodies around the world. These lakes are often situated in arid, volcanic terrain. The highest concentrations of arsenic occur in hypersaline, closed basin soda...
Dynamic rupture modeling of the transition from thrust to strike-slip motion in the 2002 Denali fault earthquake, Alaska
Brad T. Aagaard, G. Anderson, K.W. Hudnut
2004, Bulletin of the Seismological Society of America (94) S190-S201
We use three-dimensional dynamic (spontaneous) rupture models to investigate the nearly simultaneous ruptures of the Susitna Glacier thrust fault and the Denali strike-slip fault. With the 1957 Mw 8.3 Gobi-Altay, Mongolia, earthquake as the only other well-documented case of significant, nearly simultaneous rupture of both thrust and strike-slip faults, this...
Preventing, controlling, and managing alien species introduction for the health of aquatic and marine ecosystems
C.I. Short, S.K. Gross, D. Wilkinson
2004, American Fisheries Society Symposium (2004) 109-125
The introduction and spread of invasive species is an emerging global problem. As economic and ecological impacts continue to grow, there will be an increasing need to develop innovative solutions and global partnerships to combat the increasing rate of invasions and their accompanying impacts. Threats to sustainable fisheries in North...
Numerical simulations of large earthquakes: Dynamic rupture propagation on heterogeneous faults
R.A. Harris
2004, Pure and Applied Geophysics (161) 2171-2181
Our current conceptions of earthquake rupture dynamics, especially for large earthquakes, require knowledge of the geometry of the faults involved in the rupture, the material properties of the rocks surrounding the faults, the initial state of stress on the faults, and a constitutive formulation that determines when the faults can...
Variability of hydrologic regimes and morphology in constructed open-ditch channels
J.S. Strock, J.A. Magner, W. B. Richardson, M.J. Sadowsky, G.R. Sands, R.T. Venterea
Cooke R.A., editor(s)
2004, Conference Paper, Proceedings of the 8th International Drainage Symposium - Drainage VIII
Open-ditch ecosystems are potential transporters of considerable loads of nutrients, sediment, pathogens and pesticides from direct inflow from agricultural land to small streams and larger rivers. Our objective was to compare hydrology and channel morphology between two experimental open-ditch channels. An open-ditch research facility incorporating a paired design was constructed...
The opportunity Rover's Athena science investigation at Meridiani Planum, Mars
S. W. Squyres, R. E. Arvidson, J.F. Bell III, J. Bruckner, N.A. Cabrol, W. Calvin, M. H. Carr, P. R. Christensen, B. C. Clark, L. Crumpler, D.J. Des Marais, C. D'Uston, T. Economou, J. Farmer, W. Farrand, W. Folkner, M. Golombek, S. Gorevan, J. A. Grant, R. Greeley, J. Grotzinger, L. Haskin, Kenneth E. Herkenhoff, S. Hviid, J. Johnson, G. Klingelhofer, A.H. Knoll, G. Landis, M. Lemmon, R. Li, M.B. Madsen, M. C. Malin, S. M. McLennan, H.Y. McSween, D. W. Ming, J. Moersch, R.V. Morris, T. Parker, J. W. Rice Jr., L. Richter, R. Rieder, M. Sims, M. Smith, P. Smith, Laurence A. Soderblom, R. Sullivan, H. Wanke, T. Wdowiak, M. Wolff, A. Yen
2004, Science (306) 1698-1703
The Mars Exploration Rover Opportunity has investigated the landing site in Eagle crater and the nearby plains within Meridiani Planum. The soils consist of fine-grained basaltic sand and a surface lag of hematite-rich spherules, spherule fragments, and other granules. Wind ripples are common. Underlying the thin soil layer, and exposed...
In situ evidence for an ancient aqueous environment at Meridiani Planum, Mars
S. W. Squyres, J.P. Grotzinger, R. E. Arvidson, J.F. Bell III, W. Calvin, P. R. Christensen, B. C. Clark, J.A. Crisp, W. H. Farrand, Kenneth E. Herkenhoff, J. R. Johnson, G. Klingelhofer, A.H. Knoll, S. M. McLennan, H.Y. McSween Jr., R.V. Morris, J. W. Rice Jr., R. Rieder, Laurence A. Soderblom
2004, Science (306) 1709-1714
Sedimentary rocks at Eagle crater in Meridiani Planum are composed of fine-grained siliciclastic materials derived from weathering of basaltic rocks, sulfate minerals (including magnesium sulfate and jarosite) that constitute several tens of percent of the rock by weight, and hematite. Cross-stratification observed in rock outcrops indicates eolian and aqueous transport....
