The Crown of the Continent: Striving for ecosystem sustainability
Tony Prato, Daniel B. Fagre
Tony Prato, Daniel B. Fagre, editor(s)
2007, Book chapter, Sustaining Rocky Mountain landscapes: Science, policy and management of the Crown of the Continent ecosystem
No abstract available....
Modeling the biophysical impacts of global change in mountain biosphere reserves
H.K.M. Bugmann, F. Ewert Bjornsen, W. Haeberli, Antoine Guisan, Daniel B. Fagre, A. Kaab
2007, Mountain Research and Development (27) 66-77
Mountains and mountain societies provide a wide range of goods and services to humanity, but they are particularly sensitive to the effects of global environmental change. Thus, the definition of appropriate management regimes that maintain the multiple functions of mountain regions in a time of greatly changing climatic, economic, and...
LoCoH: Non-parameteric kernel methods for constructing home ranges and utilization distributions
Wayne M. Getz, Scott Fortmann-Roe, Paul C. Cross, Andrew J. Lyons, Sadie J. Ryan, Christopher C. Wilmers
2007, PLoS ONE (2)
Parametric kernel methods currently dominate the literature regarding the construction of animal home ranges (HRs) and utilization distributions (UDs). These methods frequently fail to capture the kinds of hard boundaries common to many natural systems. Recently a local convex hull (LoCoH) nonparametric kernel method, which generalizes the minimum convex polygon...
Ecosystem responses to global climate change
Daniel B. Fagre
Tony Prato, Daniel B. Fagre, editor(s)
2007, Book chapter, Sustaining Rocky Mountain landscapes: Science, policy and management of the Crown of the Continent ecosystem
No abstract available....
CCE Fire regimes and their management
R.E. Keane, C.H. Key
Daniel B. Fagre, A. Prato, editor(s)
2007, Book chapter, Sustaining Rocky Mountain Landscapes: Science, Policy, and Management for the Crown of the Continent Ecosystem
No abstract available....
Modeling and monitoring biophysical dynamics and change
Daniel B. Fagre
Tony Prato, Daniel B. Fagre, editor(s)
2007, Book chapter, Sustaining Rocky Mountain landscapes: Science, policy and management of the Crown of the Continent ecosystem
No abstract available....
Second chance for the plains bison
Curtis H. Freese, K. Aune, D. Boyd, James N. Derr, Steven C. Forrest, C. Cormack Gates, Peter J. Gogan, Shaun M. Grassel, Natalie D. Halbert, Kyran E. Kunkel, Kent Redford
2007, Biological Conservation (136) 175-184
Before European settlement the plains bison (Bison bison bison) numbered in the tens of millions across most of the temperate region of North America. Within the span of a few decades during the mid- to late-1800s its numbers were reduced by hunting and other factors to a few hundred. The...
A simple solar radiation index for wildlife habitat studies
Kim A. Keating, Peter J. Gogan, John N. Vore, Lynn R. Irby
2007, Journal of Wildlife Management (71) 1344-1348
Solar radiation is a potentially important covariate in many wildlife habitat studies, but it is typically addressed only indirectly, using problematic surrogates like aspect or hillshade. We devised a simple solar radiation index (SRI) that combines readily available information about aspect, slope, and latitude. Our SRI is proportional to the...
The art and science of weed mapping
David T. Barnett, Thomas J. Stohlgren, Catherine S. Jarnevich, Geneva W. Chong, Jenny A. Ericson, Tracy R. Davern, Sara E. Simonson
2007, Environmental Monitoring and Assessment (132) 235-252
Land managers need cost-effective and informative tools for non-native plant species management. Many local, state, and federal agencies adopted mapping systems designed to collect comparable data for the early detection and monitoring of non-native species. We compared mapping information to statistically rigorous, plot-based methods to better understand the benefits and...
Evaluating estimators for numbers of females with cubs-of-the-year in the Yellowstone grizzly bear population
S. Cherry, G.C. White, K.A. Keating, Mark A. Haroldson, Charles C. Schwartz
2007, Journal of Agricultural, Biological, and Environmental Statistics (12) 195-215
Current management of the grizzly bear (Ursus arctos) population in Yellowstone National Park and surrounding areas requires annual estimation of the number of adult female bears with cubs-of-the-year. We examined the performance of nine estimators of population size via simulation. Data were simulated using two methods for different combinations of...
Translocation and disease monitoring of wild laysan ducks
Michelle H. Reynolds, Thierry M. Work
2007, Endangered Species Bulletin (XXXII) 52-54
The Laysan duck (Anas laysanensis), also known as the Laysan teal because of its small size, is a critically endangered waterfowl species that once occurred widely across the Hawaiian Archipelago. For the past 150 years, however, it was restricted to a single population on Laysan, a 4-square-kilometer (1.5-square-mile) island with...
Distribution and grain-size partitioning of metals in bovfom sediments of an experimentally acidified Wisconsin lake
John F. Elder
2007, Water Resources Bulletin (30)
A study of concentrations and distribution of major and trace elements in surficial bottom sediments of Little Rock Lake in northern Wisconsin included examination of spatial variation and grain-size effects. No significant differences with respect to metal distribution in sediments were observed between the two basins of the lake, despite...
Volcanic fire and glacial ice: Mount Rogers National Recreation Area
Water Resources Division, U.S. Geological Survey, U.S. Forest Service
2007, Report
In addition to containing the highest point in Virginia (Mount Rogers, elevation 5,729 feet), the Mount Rogers National Recreation Area (NRA) of the Jefferson National Forest is a window on the history of ancient volcanic eruptions and glacial movement....
Frequency-duration analysis of dissolved-oxygen concentrations in two southwestern Wisconsin streams
Steven R. Greb, David J. Graczyk
2007, Water Resources Bulletin (31) 431-438
Historically, dissolved-oxygen (DO) data have been collected in the same manner as other water-quality constituents, typically at infrequent intervals as a grab sample or an instantaneous meter reading. Recent years have seen an increase in continuous water-quality monitoring with electronic dataloggers. This new technique requires new approaches in the statistical...
Afterword
Katherine C. Kendall
2007, Book, Mysteries in Our National Parks: The Hunted: A Mystery in Glacier National Park
No abstract available....
Effective groundwater model calibration: With analysis of data, sensitivities, predictions, and uncertainty
Mary C. Hill, Claire R. Tiedeman
2007, Book
Methods and guidelines for developing and using mathematical modelsTurn to Effective Groundwater Model Calibration for a set of methods and guidelines that can help produce more accurate and transparent mathematical models. The models can represent groundwater flow and transport and other natural and engineered systems. Use this book and its...
Zircon crystallization and recycling in the magma chamber of the rhyolitic Kos Plateau Tuff (Aegean arc)
O. Bachman, B. L. A. Charlier, J. B. Lowenstern
2007, Geology (35) 73-76
In contrast to most large-volume silicic magmas in continental arcs, which are thought to evolve as open systems with significant assimilation of preexisting crust, the Kos Plateau Tuff magma formed dominantly by crystal fractionation of mafic parents. Deposits from this ∼60 km3 pyroclastic eruption (the largest known in the Aegean arc)...
Suspended-sediment transport measurement
John R. Gray
2007, Book chapter, Encyclopedia of Water Science
Of the two operationally defined phases of fluvial-sediment transport – suspended load and bedload – collection of suspended-load data is the more common. This is a reflection of a number of factors including the general predominance of suspended load over bedload in mass transport and the greater difficulty and costs...
Vision for a worldwide fluvial-sediment information network
J. R. Gray, W. R. Osterkamp
2007, Conference Paper, Proceedings of the Tenth International Symposium on River Sedimentation, August 1-4, 2007, Moscow, Russia
The nations of the world suffer both from the deleterious effects of some natural and human-altered fluxes of fluvial sediment and a lack of consistent and reliable information on the temporal and spatial occurrence of fluvial sediments. Decades ago, this difficulty was unavoidable due to a lack of understanding of...
EAARL Topography-Padre Island National Seashore
John Brock, C. Wayne Wright, Amar Nayegandhi, Matt Patterson, Iris Wilson, Laurinda J. Travers
2007, Open-File Report 2007-1431
This Web site contains 116 Lidar-derived bare earth topography maps and GIS files for Padre Island National Seashore-Texas. These Lidar-derived topography maps were produced as a collaborative effort between the U.S. Geological Survey (USGS) Florida Integrated Science Center (FISC) St. Petersburg, Florida, the National Park Service (NPS) Gulf Coast Network, Inventory...
Fluorspar
M. Miller
2007, Mining Engineering (59) 30-32
Apart from some fluorspar by-product, there was no U.S. production of fluorspar in 2006. Imports were 553 kt, nearly 14 percent less than in 2005, and China was by far the largest supplier. China's changing export policy and high ocean freight rates indicate that delivered prices for fluorspar may increase...
Applying the scientific method when assessing the influence of migratory birds on the dispersal of H5N1
Paul L. Flint
2007, Virology Journal (4)
Background The role of wild birds in the dispersal of highly pathogenic avian influenza virus H5N1 continues to be the subject of considerable debate. However, some researchers functionally examining the same question are applying opposing null hypotheses when examining this issue. Discussion I describe the...
Kaolin
R.L. Virta
2007, Mining Engineering (59) 39-40
Part of the 2006 industrial minerals review. U.S. kaolin production was an estimated 7.74 Mt in 2006, with 7.1 Mt produced by Georgia. Imports increased from 262 kt in 2005 to about 303 kt in 2006, whereas exports decreased from 3.58 Mt in 2005 to 3.54 Mt in 2006. Inexpensive...
Mineral resource of the month: wollastonite
Robert Virta, Brad Van Gosen
2007, Geotimes (2007)
When asked about wollastonite, most people respond “wollasta-what?” That’s because the wollastonite industry in the United States is relatively small and not highly publicized. Furthermore, the general public does not have any direct contact with wollastonite despite its use in many consumer products, ranging from car brakes to paint....
EAARL Submarine Topography - Northern Florida Keys Reef Tract
John Brock, C. Wayne Wright, Amar Nayegandhi, Matt Patterson, Laurinda J. Travers, Iris Wilson
2007, Open-File Report 2007-1432
This Web site contains 32 Lidar-derived bare earth topography maps and GIS files for the Northern Florida Keys Reef Tract. These lidar-derived submarine topographic maps were produced as a collaborative effort between the U.S. Geological Survey (USGS) Coastal and Marine Geology Program, FISC St. Petersburg, Florida, the National Park Service (NPS)...
