South Coast bioregion
Jon E. Keeley
2006, Book chapter, Fire in California's ecosystems
This chapter investigates the South Coast bioregion in Southern California. There are two broad ecological zones: the coastal valleys and foothill zone and the montane zone. Grasslands are resilient to a wide range of fire frequencies. Fire regimes in big-cone Douglas-fir forests vary spatially and temporally. Lodgepole pine forests are...
Water Resources Data, Pennsylvania, Water Year 2005, Volume 2. Susquehanna and Potomac River Basins
R.R. Durlin, W.P. Schaffstall, M.R. Beaver
2006, Water Data Report PA-05-2
Water resources data for the 2005 water year for Pennsylvania consist of records of discharge and water quality of streams; contents and elevations of lakes and reservoirs; and water levels and water quality of ground-water wells. This report, Volume 2 contains (1) discharge records for 89 continuous-record streamflow-gaging stations, 13...
Water Resources Data, Pennsylvania, Water Year 2005, Volume 1. Delaware River Basin
R.R. Durlin, W.P. Schaffstall, M.R. Beaver
2006, Water Data Report PA-05-1
Water resources data for the 2005 water year for Pennsylvania consist of records of discharge and water quality of streams; contents and elevations of lakes and reservoirs; and water levels and water quality of ground-water wells. This report, Volume 1 contains (1) discharge records for 75 continuous-record streamflow-gaging stations, 5...
Vanishing before our eyes
Wylie C. Barrow Jr., William R. Fontenot, Madeline H. Barrow, Richard A. DeMay, David Muth
2006, Book
No abstract available...
Introduction to the special issue on the changing Mojave Desert
Kristin H. Berry, R. W. Murphy, Jeremy S. Mack, W. Quillman
2006, Journal of Arid Environments (67) 5-10
The Mojave Desert, which lies between the Great Basin Desert in the north and the Sonoran Desert in the south, covers an estimated 114 478–130 464 km2 of the south-western United States and includes parts of the states of Nevada, Utah, Arizona, and California, with the amount of land mass dependent on the...
Ground-water conditions in Utah, spring of 2006
Carole B. Burden, David V. Allen, M.R. Danner, Vince Walzem, J.L. Cillessen, Paul Downhour, C.D. Wilkowske, Robert J. Eacret, Dale E. Wilberg, B.A. Slaugh, R.L. Swenson, J.H. Howells, H.K. Christiansen, M.J. Fisher
2006, Cooperative Investigations Report 47
This is the forty-third in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, published cooperatively by the U.S. Geological Survey and the Utah Department of Natural Resources, Division of Water Resources and Division of Water Rights, and the Utah Department of Environmental Quality,...
Reply to comment by F. Molz et al. on “Investigating the Macrodispersion Experiment (MADE) site in Columbus, Mississippi, using a three‐dimensional inverse flow and transport model”
Mary C. Hill, Heidi Christiansen Barlebo, Dan Rosbjerg
2006, Water Resources Research (42)
We are pleased to have the opportunity to discuss further what we think are important methods and results presented <span...
Multi-scale responses of soil stability and invasive plants to removal of non-native grazers from an arid conservation reserve
Erik A. Beever, Manuela M. P. Huso, David A. Pyke
2006, Diversity and Distributions (12) 258-268
Disturbances and ecosystem recovery from disturbance both involve numerous processes that operate on multiple spatial and temporal scales. Few studies have investigated how gradients of disturbance intensity and ecosystem responses are distributed across multiple spatial resolutions and also how this relationship changes through time during recovery. We investigated how cover...
Linking the concept of scale to studies of biological diversity: evolving approaches and tools.
E.A. Beever, R.K. Swihart, B. T. Bestelmeyer
2006, Diversity and Distributions (12) 229-235
Although the concepts of scale and biological diversity independently have received rapidly increasing attention in the scientific literature since the 1980s, the rate at which the two concepts have been investigated jointly has grown much more slowly. We find that scale considerations have been incorporated explicitly into six broad areas...
Mapping South San Francisco Bay's seabed diversity for use in wetland restoration planning
Theresa A. Fregoso, B. Jaffe, G. Rathwell, W. Collins, K. Rhynas, V. Tomlin, S. Sullivan
2006, Conference Paper
In an effort to understand the role of sediment of South San Francisco Bay (South Bay) salt ponds, an acoustic seabed classification was performed with the condition of over two hundred sediment samples. The success of the large-scale tidal wetland restoration of up to 15,000 acres of South Bay partly...
Monitoring biological diversity: strategies, tools, limitations, and challenges
E.A. Beever
2006, Northwestern Naturalist (87) 66-79
Monitoring is an assessment of the spatial and temporal variability in one or more ecosystem properties, and is an essential component of adaptive management. Monitoring can help determine whether mandated environmental standards are being met and can provide an early-warning system of ecological change. Development of a strategy for monitoring...
Taxonomic considerations in listing subspecies under the U.S. Endangered Species Act
S. M. Haig, E.A. Beever, Steven M. Chambers, Hope M. Draheim, Bruce D. Dugger, Susie Dunham, Elise Elliott-Smith, Joseph B. Fontaine, Dylan C. Kesler, Brian J. Knaus, Iara F. Lopes, Peter J. Loschl, Thomas D. Mullins, Lisa M. Sheffield
2006, Conservation Biology (20) 1584-1594
The U.S. Endangered Species Act (ESA) allows listing of subspecies and other groupings below the rank of species. This provides the U.S. Fish and Wildlife Service and the National Marine Fisheries Service with a means to target the most critical unit in need of conservation. Although roughly one-quarter of listed...
Time of travel and dispersion in the Merrimack River in Massachusetts from the state line to the Atlantic Ocean
Gene W. Parker
2006, Scientific Investigations Report 2006-5103
To obtain copies of this report, please contact: Director, Division of Watershed Management, Massachusetts Department of Environmental Protection, 8 New Bond St.. Worcester, MA 01608, (508) 792–7650...
Reassessing a troublesome fact of mountain life: Avalanches in Glacier National Park
Blase Reardon, Daniel B. Fagre
2006, Park Science (24) 37-39
For the past decade, our U.S. Geological Survey (USGS) research team has rummaged through Glacier National Park’s archives looking for records of snow avalanches. Our searches have paid off. We have found photographs that show snow avalanches blocking progress during the annual spring opening of the famed Going-to-the-Sun Road,...
Grizzly bear nutrition and ecology studies in Yellowstone National Park
Charles T. Robbins, Charles C. Schwartz, Kerry A. Gunther, Christopher Servheen
2006, Yellowstone Science (14) 19-26
T HE CHANCE TO SEE a wild grizzly bear is often the first or second reason people give for visiting Yellow - stone National Park. Public interest in bears is closely coupled with a desire to perpetuate this wild symbol of the American West. Grizzly bears have long been described...
Hydrologic landscape units and adaptive management of intermountain wetlands
Stephen G. Custer, R.S. Sojda
2006, Conference Paper, Adaptive Management of Water Resources: American Water Resources Association Summer Specialty Conference.
daptive management is often proposed to assist in the management of national wildlife refuges and allows the exploration of alternatives as well as the addition of ne w knowledge as it becomes available. The hydrological landscape unit can be a good foundation for such efforts. Red Rock Lakes National Wildlife...
Mapping new terrain climate change and America’s West: Anticipating challenges to western mountain ecosystems and resources
CIRMOUNT Committee
2006, Report
Climate variability and sustained change presage far-reaching transformations across America’s West, an expanse dominated by immense mountain ranges and interspersed with important urban centers. These mountains provide the region’s life blood—water that courses through its streams and runs out its faucets, power that fuels its industries and lights its...
Taxonomic and geographic variation in oviposition by tailed frogs (Ascaphus spp)
Nancy E. Karraker, David S. Pilliod, M. J. Adams, Evelyn L. Bull, Paul Stephen Corn, Lowell V. Diller, Marc P. Hayes, Blake R. Hossack, Garth R. Hodgson, Erin J. Hyde, Kirk Lohman, Bradford R. Norman, Lisa M. Ollivier, Christopher A. Pearl, Charles R. Peterson
2006, Northwestern Naturalist (87) 87-97
Tailed frogs (Ascaphus spp.) oviposit in cryptic locations in streams of the Pacific Northwest and Rocky Mountains. This aspect of their life history has restricted our understanding of their reproductive ecology. The recent split of A. montanus in the Rocky Mountains from A. truei was based on molecular differentiation, and...
Assessing vaccination as a control strategy in an ongoing epidemic: Bovine tuberculosis in African buffalo
Paul C. Cross, Wayne M. Getz
2006, Ecological Modelling (196) 494-504
Bovine tuberculosis (BTB) is an exotic disease invading the buffalo population (Syncerus caffer) of the Kruger National Park (KNP), South Africa. We used a sex and age-structured epidemiological model to assess the effectiveness of a vaccination program and define important research directions. The model allows for dispersal between a focal...
High resolution tree-ring based spatial reconstructions of snow avalanche activity in Glacier National Park, Montana, USA
Gregory T. Pederson, Blase Reardon, C.J. Caruso, Daniel B. Fagre
2006, Conference Paper, Proceedings of 2006 International Snow Science Workshop
Effective design of avalanche hazard mitigation measures requires long-term records of natural avalanche frequency and extent. Such records are also vital for determining whether natural avalanche frequency and extent vary over time due to climatic or biophysical changes. Where historic records are lacking, an accepted substitute is a chronology developed...
Modeling the invasion and spread of contagious disease in heterogeneous populations
W.M. Getz, James O. Lloyd-Smith, Paul C. Cross, S. Bar-David, P.L.F. Johnson, T.C. Porco, M.S. Sanchez
Zhilan Feng, Ulf Dieckmann, Simon A. Levin, editor(s)
2006, Book chapter, Disease evolution: Models, concepts, and data analyses
No abstract available....
Coping with climate change
Tony Prato, Daniel B. Fagre
2006, ActionBioscience
What have we learned so far about how climate change is affecting our global environment? Studies show that it adversely affects human and natural systems by • reducing biodiversity • altering hydrological systems • impairing biological and chemical cycles • making it more difficult to restore degraded ecosystems Climate is not the only factor...
Natural glide slab avalanches, Glacier National Park, USA: A unique hazard and forecasting challenge
Blase Reardon, Daniel B. Fagre, Mark Dundas, Chris Lundy
2006, Conference Paper, Proceedings of 2006 International Snow Science Workshop
In a museum of avalanche phenomena, glide cracks and glide avalanches might be housed in the “strange but true” section. These oddities are uncommon in most snow climates and tend to be isolated to specific terrain features such as bedrock slabs. Many glide cracks never result in avalanches, and when...
The northern Yellowstone elk herd; management policy and natural regulation
Dale R. McCullough, Koichi Kaji, Masami Yamanaka
2006, Book chapter, Wildlife in Shiretoko and Yellowstone National Parks: Lessons in Wildlife Conservation from Two World Heritage Sites
No abstract available....
Long-duration drought variability and impacts on ecosystem services: A case study from Glacier National Park, Montana
Gregory T. Pederson, Stephen T. Gray, Daniel B. Fagre, Lisa J. Graumlich
2006, Earth Interactions (10) 1-28
Instrumental climate records suggest that summer precipitation and winter snowpack in Glacier National Park (Glacier NP), Montana, vary significantly over decadal to multidecadal time scales. Because instrumental records for the region are limited to the twentieth century, knowledge of the range of variability associated with these moisture anomalies and their...
