Upper Klamath Basin Landsat Image for April 28, 2006: Path 45 Rows 30 and 31
Daniel T. Snyder
2012, Report
This image is a mosaic of Landsat-7 images of the upper Klamath Basin. The original images were obtained from the U.S. Geological Survey Earth Resources Observation and Science Center (EROS). EROS is responsible for archive management and distribution of Landsat data products. The Landsat-7 satellite is part of an ongoing...
Upper Klamath Basin Landsat Image for May 30, 2006: Path 45 Rows 30 and 31
Daniel T. Snyder
2012, Report
This image is a mosaic of Landsat-7 images of the upper Klamath Basin. The original images were obtained from the U.S. Geological Survey Earth Resources Observation and Science Center (EROS). EROS is responsible for archive management and distribution of Landsat data products. The Landsat-7 satellite is part of an ongoing...
Factors associated with the severity of interacting fires in Yosemite National Park
Jan W. van Wagtendonk, Kent A. van Wagtendonk, Andrea E. Thode
2012, Fire Ecology (8) 11-31
In 1972, Yosemite National Park established a wilderness fire zone in which lightning fires were allowed to run their courses under prescribed conditions. This zone was expanded in 1973 to include the 16 209 ha Illilouette Creek basin, just to the southeast of Yosemite Valley. From 1973 through...
Slip rate on the San Diego trough fault zone, inner California Borderland, and the 1986 Oceanside earthquake swarm revisited
Holly F. Ryan, James E. Conrad, C. K. Paull, Mary McGann
2012, Bulletin of the Seismological Society of America (102) 2300-2312
The San Diego trough fault zone (SDTFZ) is part of a 90-km-wide zone of faults within the inner California Borderland that accommodates motion between the Pacific and North American plates. Along with most faults offshore southern California, the slip rate and paleoseismic history of the SDTFZ are unknown. We present...
Influence of fault trend, bends, and convergence on shallow structure and geomorphology of the Hosgri strike-slip fault, offshore central California
Samuel Y. Johnson, Janet Tilden Watt
2012, Geosphere (8) 1632-1656
We mapped an ∼94-km-long portion of the right-lateral Hosgri fault zone in offshore central California using a dense network of high-resolution seismic reflection profiles, marine magnetic data, and multibeam bathymetry. These data document the location, length, and continuity of multiple fault strands, highlight fault-zone heterogeneity, and demonstrate the importance...
Small-scale and reconnaissance surveys
Jonathan Bart, Brad A. Andres, Kyle Elliott, Charles M. Francis, Victoria Johnston, R. I. G. Morrison, Elin P. Pierce, Jennie Rausch
Jonathan Bart, Victoria Johnston, editor(s)
2012, Book chapter, Arctic shorebirds in North America: a decade of monitoring
This brief chapter addresses two related issues: how effort should be allocated to different parts of the sampling plan and, given optimal allocation, how large a sample will be required to achieve the PRISM accuracy target. Simulations based on data collected to date showed that 2 plots per cluster on...
Design of future surveys
Jonathan Bart, Paul A. Smith
Jonathan R. Bart, Victoria H. Johnston, editor(s)
2012, Book chapter, Arctic shorebirds in North America: A decade of monitoring
This brief chapter addresses two related issues: how effort should be allocated to different parts of the sampling plan and, given optimal allocation, how large a sample will be required to achieve the PRISM accuracy target. Simulations based on data collected to date showed that 2 plots per cluster on...
Science in support of the Deepwater Horizon response
Jane Lubchenco, Marcia K. McNutt, Gabrielle Dreyfus, Steven A. Murawski, David M. Kennedy, Paul T. Anastas, Steven Chu, Tom Hunter
2012, Proceedings of the National Academy of Sciences of the United States of America (109) 20212-20221
This introduction to the Special Feature presents the context for science during the Deepwater Horizon oil spill response, summarizes how scientific knowledge was integrated across disciplines and statutory responsibilities, identifies areas where scientific information was accurate and where it was not, and considers lessons learned and recommendations for future research...
Associations between forest fragmentation patterns and geneticstructure in Pfrimer’s Parakeet (Pyrrhura pfrimeri), an endangered endemic to central Brazil’s dry forests
Susan M. Haig, Leonard F. Miller, Carlos Bianchi, Thomas D. Mullins
2012, Conservation Genetics (13)
When habitat becomes fragmented, populations of species may become increasingly isolated. In the absence of habitat corridors, genetic structure may develop and populations risk reductions in genetic diversity from increased genetic drift and inbreeding. Deforestation of the Cerrado biome of Brazil, particularly of the dry forests within the Parana˜ River...
Exploring similarities among many species distributions
Scott Simmerman, Jingyuan Wang, James Osborne, Kimberly Shook, Jia Hu, William Godsoe, Theodore R. Simons
2012, Conference Paper, Proceedings of the 1st Conference of the Extreme Science and Engineering Discovery Environment: Bridging from the eXtreme to the campus and beyond
Collecting species presence data and then building models to predict species distribution has been long practiced in the field of ecology for the purpose of improving our understanding of species relationships with each other and with the environment. Due to limitations of computing power as well as limited means of...
Upper Klamath Basin Landsat Image for August 19, 2006: Path 44 Row 31
Daniel T. Snyder
2012, Report
This image is a mosaic of Landsat-5 images of the upper Klamath Basin. The original images were obtained from the U.S. Geological Survey Earth Resources Observation and Science Center (EROS). EROS is responsible for archive management and distribution of Landsat data products. The Landsat-5 satellite is part of an ongoing...
Design and implementation of the next generation Landsat satellite communications system
Grant R. Mah, Michael O’Brien, Howard Garon, Claire Mott, Alan Ames, Ken Dearth
2012, Conference Paper, Proceedings from the International Telemetering Conference
The next generation Landsat satellite, Landsat 8 (L8), also known as the Landsat Data Continuity Mission (LDCM), uses a highly spectrally efficient modulation and data formatting approach to provide large amounts of downlink (D/L) bandwidth in a limited X-Band spectrum allocation. In addition to purely data throughput and bandwidth considerations,...
Upper Klamath Basin Landsat Image for June 17, 2004: Path 45 Rows 30 and 31
Daniel T. Snyder
2012, Report
This image is a mosaic of Landsat-5 images of the upper Klamath Basin. The original images were obtained from the U.S. Geological Survey Earth Resources Observation and Science Center (EROS). EROS is responsible for archive management and distribution of Landsat data products. The Landsat-5 satellite is part of an ongoing...
Impact of wildfire and slope aspect on soil temperature in a mountainous environment
Brian A. Ebel
2012, Vadose Zone Journal (11)
Soil temperature changes after landscape disturbance impact hydrology, ecology, and geomorphology. This study used field measurements to examine wildfire and aspect effects on soil temperatures. Combustion of the litter and duff layers on north-facing slopes removed pre-fire aspect-driven soil temperature controls.Wildfire is one of the most significant disturbances in mountainous...
Multifractal model of magnetic susceptibility distributions in some igneous rocks
Mark E. Gettings
2012, Nonlinear Processes in Geophysics (19) 635-642
Measurements of in-situ magnetic susceptibility were compiled from mainly Precambrian crystalline basement rocks beneath the Colorado Plateau and ranges in Arizona, Colorado, and New Mexico. The susceptibility meter used measures about 30 cm3 of rock and measures variations in the modal distribution of magnetic minerals that form a minor component...
Histologic, immunologic and endocrine biomarkers indicate contaminant effects in fishes of the Ashtabula River
L. R. Iwanowicz, V. S. Blazer, N.P. Hitt, S. D. McCormick, D.S. Devault, C. A. Ottinger
2012, Ecotoxicology (21) 165-182
The use of fish as sentinels of aquatic ecosystem health is a biologically relevant approach to environmental monitoring and assessment. We examined the health of the Ashtabula River using histologic, immunologic, and endocrine biomarkers in brown bullhead (BB; Ameiurus nebulosus) and largemouth bass (Micropterus salmoides) and compared fish collected from...
GONe: Software for estimating effective population size in species with generational overlap
J.A. Coombs, B. H. Letcher, K.H. Nislow
2012, Molecular Ecology Resources (12) 160-163
GONe is a user‐friendly, Windows‐based program for estimating effective size (Ne) in populations with overlapping generations. It uses the Jorde–Ryman modification to the temporal method to account for age structure in populations. This method requires estimates of age‐specific survival and birth rate and allele frequencies measured in...
Occurrence and geochemistry of radium in water from principal drinking-water aquifer systems of the United States
Z. Szabo, Vincent T. DePaul, J.M. Fischer, T. F. Kraemer, E. Jacobsen
2012, Applied Geochemistry (27) 729-752
A total of 1270 raw-water samples (before treatment) were collected from 15 principal and other major aquifer systems (PAs) used for drinking water in 45 states in all major physiographic provinces of the USA and analyzed for concentrations of the Ra isotopes 224Ra, 226Ra and 228Ra establishing...
Regulation leads to increases in riparian vegetation, but not direct allochthonous inputs, along the Colorado River in Grand Canyon, Arizona
T.A. Kennedy, B.E. Ralston
2012, River Research and Applications (28) 2-12
Dams and associated river regulation have led to the expansion of riparian vegetation, especially nonnative species, along downstream ecosystems. Nonnative saltcedar is one of the dominant riparian plants along virtually every major river system in the arid western United States, but allochthonous inputs have never been quantified along a segment...
Reducing uncertainty about objective functions in adaptive management
Byron K. Williams
2012, Ecological Modelling (225) 61-65
This paper extends the uncertainty framework of adaptive management to include uncertainty about the objectives to be used in guiding decisions. Adaptive decision making typically assumes explicit and agreed-upon objectives for management, but allows for uncertainty as to the structure of the decision process that generates change through time. Yet...
Shorebird surveys in western Alaska
Brian J. McCaffery, Jonathan Bart, Catherine Wightman, David J. Krueper
2012, Book chapter, Arctic shorebirds in North America: A decade of monitoring
Surveys for breeding shorebirds were conducted during 2001-2002 in four National Wildlife Refuges (NWRs) in western Alaska - Alaska Maritime, Alaska Peninsula, Yukon Delta and Selawik. The sizes of our study areas on and adjacent to these four refuges were 9,243 km2, 24,493 km2, 853 km2, and 15,170 km2, respectively....
Slab1.0: A three-dimensional model of global subduction zone geometries
Gavin P. Hayes, David J. Wald, Rebecca L. Johnson
2012, Journal of Geophysical Research B: Solid Earth (117)
We describe and present a new model of global subduction zone geometries, called Slab1.0. An extension of previous efforts to constrain the two-dimensional non-planar geometry of subduction zones around the focus of large earthquakes, Slab1.0 describes the detailed, non-planar, three-dimensional geometry of approximately 85% of subduction zones worldwide. While the...
Foraging segregation and genetic divergence between geographically proximate colonies of a highly mobile seabird
Anne E. Wiley, Andreanna J. Welch, P.H. Ostrom, Helen F. James, Craig A. Stricker, R.C. Fleischer, H. Gandhi, Josh Adams, D. G. Ainley, F. Duvall, N. Holmes, D. Hu, S. Judge, J. Penniman, K.A. Swindle
2012, Oecologia (168) 119-130
Foraging segregation may play an important role in the maintenance of animal diversity, and is a proposed mechanism for promoting genetic divergence within seabird species. However, little information exists regarding its presence among seabird populations. We investigated genetic and foraging divergence between two colonies of endangered Hawaiian petrels (Pterodroma sandwichensis)...
Verifiable metamodels for nitrate losses to drains and groundwater in the Corn Belt, USA
Bernard T. Nolan, Robert W. Malone, Jo Ann M. Gronberg, K.R. Thorp, Liwang Ma
2012, Environmental Science & Technology (46) 901-908
Nitrate leaching in the unsaturated zone poses a risk to groundwater, whereas nitrate in tile drainage is conveyed directly to streams. We developed metamodels (MMs) consisting of artificial neural networks to simplify and upscale mechanistic fate and transport models for prediction of nitrate losses by drains and leaching in the...
A riverscape perspective of Pacific salmonids and aquatic habitats prior to large-scale dam removal in the Elwha River, Washington, USA
S.J. Brenkman, J.J. Duda, C.E. Torgersen, E. Welty, G.R. Pess, R. Peters, M.L. McHenry
2012, Fisheries Management and Ecology (19) 36-53
Dam removal has been increasingly proposed as a river restoration technique. In 2011, two large hydroelectric dams will be removed from Washington State’s Elwha River. Ten anadromous fish populations are expected to recolonise historical habitats after dam removal. A key to understanding watershed recolonisation is the collection of spatially continuous...
