Kinematics of the Slumgullion landslide revealed by ground-based InSAR surveys
W.H. Schulz, J. A. Coe, B.L. Shurtleff, J. Panosky, P. Farina, P.P. Ricci, G. Barsacchi
Erik Eberhardt, Corey Froese, Keith Turner, S. Leroueil, editor(s)
2012, Book chapter, Landslides and Engineered Slopes, Protecting Society Through Improved Understanding: Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, Banff, Canada, 3-8 June
New AGU scientific integrity and professional ethics policy available for review
Linda C. Gundersen
2012, Eos, Transactions, American Geophysical Union (93) 377-377
The AGU Task Force on Scientific Ethics welcomes your review and comments on AGU's new Scientific Integrity and Professional Ethics Policy. The policy has at its heart a code of conduct adopted from the internationally accepted "Singapore Statement," originally created by the Second World Conference on Research Integrity (http://www.singaporestatement.org/), held...
Nest survival of piping plovers at a dynamic reservoir indicates an ecological trap for a threatened population
Michael J. Anteau, Terry L. Shaffer, Mark H. Sherfy, Marsha A. Sovada, Jennifer H. Stucker, Mark T. Wiltermuth
2012, Oecologia (170) 1167-1179
In the past 60 years, reservoirs have reshaped riverine ecosystems and transformed breeding habitats used by the threatened piping plover (Charadrius melodus; hereafter plover). Currently, 29% of the Northern Great Plains plover population nests at reservoirs that might function as ecological traps because reservoirs have more diverse habitat features and...
Patterns in species richness and assemblage structure of native mussels in the Upper Mississippi River
Steven J. Zigler, Teresa J. Newton, Mike Davis, James T. Rogala
2012, Aquatic Conservation: Marine and Freshwater Ecosystems (22) 577-587
1. To evaluate patterns in mussel assemblages in the Upper Mississippi River (UMR), data from systematic surveys of mussels conducted in three large reaches (Navigation Pools 5, 6, and 18) from 2005–2007 were analysed. 2. Nonmetric multi-dimensional scaling analyses and permutation tests indicated that assemblages differed among reaches. The mussel...
National climate assessment technical report on the impacts of climate and land use and land cover change
Thomas Loveland, Rezaul Mahmood, Toral Patel-Weynand, Krista Karstensen, Kari Beckendorf, Norman Bliss, Andrew Carleton
2012, Open-File Report 2012-1155
This technical report responds to the recognition by the U.S. Global Change Research Program (USGCRP) and the National Climate Assessment (NCA) of the importance of understanding how land use and land cover (LULC) affects weather and climate variability and change and how that variability and change affects LULC. Current published,...
Water quality and landscape processes of four watersheds in eastern Puerto Rico
Sheila F. Murphy, Robert F. Stallard, Heather L. Contributions by Buss, William A. Gould, Matthew C. Larsen, Zhigang Liu, Sebastian Martinuzzi, Isabel K. Pares-Ramos, Arthur F. White, Xiaoming Zou
2012, Professional Paper 1789
Humid tropical regions occupy about a quarter of Earth's land surface, yet they contribute a substantially higher fraction of the water, solutes, and sediment discharged to the world's oceans. Nearly half of Earth's population lives in the tropics, and development stresses can potentially harm soil resources, water quality, and water...
Probability and volume of potential postwildfire debris flows in the 2012 Waldo Canyon Burn Area near Colorado Springs, Colorado
Kristine L. Verdin, Jean A. Dupree, John G. Elliott
2012, Open-File Report 2012-1158
This report presents a preliminary emergency assessment of the debris-flow hazards from drainage basins burned by the 2012 Waldo Canyon fire near Colorado Springs in El Paso County, Colorado. Empirical models derived from statistical evaluation of data collected from recently burned basins throughout the intermountain western United States were used...
Evaluation of effects of changes in canal management and precipitation patterns on salinity in Biscayne Bay, Florida, using an integrated surface-water/groundwater model
Melinda A. Lohmann, Eric D. Swain, John D. Wang, Joann Dixon
2012, Scientific Investigations Report 2012-5099
Biscayne National Park, located in Biscayne Bay in southeast Florida, is one of the largest marine parks in the country and sustains a large natural marine fishery where numerous threatened and endangered species reproduce. In recent years, the bay has experienced hypersaline conditions (salinity greater than 35 practical salinity units)...
Review of approaches for assessing the impact of climate change on landslide hazards
Jeffrey A. Coe, J. W. Godt
Erik Eberhardt, Corey Froese, Keith Turner, S. Leroueil, editor(s)
2012, Book chapter, Landslides and Engineered Slopes, Protecting Society Through Improved Understanding: Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, Banff, Canada, 3-8 June
Prototype landslide hazard map of the conterminous United States
J. W. Godt, J. A. Coe, R.L. Baum, L.M. Highland, J.R. Keaton, R.J. Roth Jr.
Erik Eberhardt, Corey Froese, Keith Turner, S. Leroueil, editor(s)
2012, Book chapter, Landslides and Engineered Slopes, Protecting Society Through Improved Understanding: Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, Banff, Canada, 3-8 June
Population dynamics of king eiders breeding in northern Alaska
Rebecca L. Bentzen, Abby N. Powell
2012, Journal of Wildlife Management (76) 1011-1020
The North American population of king eiders (Somateria spectabilis) has declined by more than 50% since the late 1970s for unknown reasons. King eiders spend most of their lives in remote areas, forcing managers to make regulatory and conservation decisions based on very little information. We incorporated available published estimates...
Natural-channel-design restorations that changed geomorphology have little effect on macroinvertebrate communities in headwater streams
Anne G. Ernst, Dana R. Warren, Barry P. Baldigo
2012, Restoration Ecology (20) 532-540
Stream restorations that increase geomorphic stability can improve habitat quality, which should benefit selected species and local aquatic ecosystems. This assumption is often used to define primary restoration goals; yet, biological responses to restoration are rarely monitored or evaluated methodically. Macroinvertebrate communities were inventoried at 6 study reaches within 5...
Monitoring gradual ecosystem change using Landsat time series analyses: case studies in selected forest and rangeland ecosystems
James E. Vogelmann, George Xian, Collin G. Homer, Brian Tolk
2012, Remote Sensing of Environment (122) 92-105
The focus of the study was to assess gradual changes occurring throughout a range of natural ecosystems using decadal Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper Plus (ETM +) time series data. Time series data stacks were generated for four study areas: (1) a four scene area dominated by...
Molecular responses differ between sensitive silver carp and tolerant bighead carp and bigmouth buffalo exposed to rotenone
Jon J. Amberg, Theresa M. Schreier, Mark P. Gaikowski
2012, Fish Physiology and Biochemistry (38) 1379-1391
Some species of fish are more tolerant of rotenone, a commonly used non-specific piscicide, than others. This species-specific tolerance to rotenone has been thought to be associated with the uptake and the efficiency at which the chemical is detoxified. However, rotenone stimulates oxidative stress and superoxides, which are also toxic....
GFDL's ESM2 global coupled climate-carbon Earth System Models. Part I: physical formulation and baseline simulation characteristics
John P. Dunne, Jasmin G. John, Alistair J. Adcroft, Stephen M. Griffies, Robert W. Hallberg, Elena Shevalikova, Ronald J. Stouffer, William Cooke, Krista A. Dunne, Matthew J. Harrison, John P. Krasting, Sergey L. Malyshev, P. C. D. Milly, Peter J. Phillipps, Lori A. Sentman, Bonita L. Samuels, Michael J. Spelman, Michael Winton, Andrew T. Wittenberg, Niki Zadeh
2012, Journal of Climate (25) 6646-6665
We describe the physical climate formulation and simulation characteristics of two new global coupled carbon-climate Earth System Models, ESM2M and ESM2G. These models demonstrate similar climate fidelity as the Geophysical Fluid Dynamics Laboratory's previous CM2.1 climate model while incorporating explicit and consistent carbon dynamics. The two models differ exclusively in...
Diversity of active aerobic methanotrophs along depth profiles of arctic and subarctic lake water column and sediments
Ruo He, Matthew J. Wooller, John W. Pohlman, John Quensen, James M. Tiedje, Mary Beth Leigh
2012, ISME Journal (6) 1937-1948
Methane (CH4) emitted from high-latitude lakes accounts for 2–6% of the global atmospheric CH4 budget. Methanotrophs in lake sediments and water columns mitigate the amount of CH4 that enters the atmosphere, yet their identity and activity in arctic and subarctic lakes are poorly understood. We used stable isotope probing (SIP),...
Elk migration patterns and human activity influence wolf habitat use in the Greater Yellowstone Ecosystem
Abigail Nelson, Matthew J. Kauffman, Arthur D. Middleton, Mike Jimenez, Douglas McWhirter, Jarrett Barber, Ken Gerow
2012, Ecological Applications (22) 2293-2307
Identifying the ecological dynamics underlying human–wildlife conflicts is important for the management and conservation of wildlife populations. In landscapes still occupied by large carnivores, many ungulate prey species migrate seasonally, yet little empirical research has explored the relationship between carnivore distribution and ungulate migration strategy. In this study, we evaluate...
The U.S. Geological Survey Amphibian Research and Monitoring Initiative-2011 Annual Update
M.J. Adams, E. Muths, E.H.C. Grant, David A. Miller, J.H. Waddle, L.C. Ball
2012, Fact Sheet 2012-3090
Welcome to the inaugural issue of ARMI's Annual Update. This update provides highlights and significant milestones of this innovative program. ARMI is uniquely qualified to provide research and monitoring results that are scalable from local to national levels, and are useful to resource managers. ARMI has produced nearly 400 peer-reviewed...
Flood risk awareness during the 2011 floods in the central United States: showcasing the importance of hydrologic data and interagency collaboration
Robert R. Holmes Jr., Noreen O. Schwein, Charles E. Shadie
2012, Leadership and Management in Engineering (12) 101-110
Floods have long had a major impact on society and the environment, evidenced by the more than 1,500 federal disaster declarations since 1952 that were associated with flooding. Calendar year 2011 was an epic year for floods in the United States, from the flooding on the Red River of the...
Field information links permafrost carbon to physical vulnerabilities of thawing
Jennifer W. Harden, Charles Koven, Chien-Lu Ping, Gustaf Hugelius, A. David McGuire, P. Camill, Torre Jorgenson, Peter Kuhry, Gary Michaelson, Jonathan A. O’Donnell, Edward A.G. Schuur, Charles Tamocai, Kevin Johnson, G. Grosse
2012, Geophysical Research Letters (39)
Deep soil profiles containing permafrost (Gelisols) were characterized for organic carbon (C) and total nitrogen (N) stocks to 3m depths. Using the Community Climate System Model (CCSM4) we calculate cumulative probability functions (PDFs) for active layer depths under current and future climates. The difference in PDFs over time was multiplied...
Water Resources of Beauregard Parish
Lawrence B. Prakken, Jason M. Griffith, Robert B. Fendick Jr.
2012, Fact Sheet 2012-3065
In 2005, about 30.6 million gallons per day (Mgal/d) of water was withdrawn in Beauregard Parish, Louisiana, including about 30.4 Mgal/d from groundwater sources and 0.1 Mgal/d from surface water sources. Industrial use, primarily for wood products, accounted for about 72 percent (22.0 Mgal/d) of the total water withdrawn. Other...
Freshwater DOM quantity and quality from a two-component model of UV absorbance
Heather T. Carter, Edward Tipping, Jean-Francois Koprivnjak, Matthew P. Miller, Brenda Cookson, John Hamilton-Taylor
2012, Water Research (46) 4532-4542
We present a model that considers UV-absorbing dissolved organic matter (DOM) to consist of two components (A and B), each with a distinct and constant spectrum. Component A absorbs UV light strongly, and is therefore presumed to possess aromatic chromophores and hydrophobic character, whereas B absorbs weakly and can be...
Late twentieth century land-cover change in the basin and range ecoregions of the United States
Christopher E. Soulard, Benjamin M. Sleeter
2012, Regional Environmental Change (12) 813-823
As part of the US Geological Survey's Land Cover Trends project, land-use/land-cover change estimates between 1973 and 2000 are presented for the basin and range ecoregions, including Northern, Central, Mojave, and Sonoran. Landsat data were employed to estimate and characterize land-cover change from 1973, 1980, 1986, 1992, and 2000 using...
Assessment of nutrients and suspended sediment conditions in and near the Agassiz National Wildlife Refuge, Northwest Minnesota, 2008–2010
Rochelle A. Nustad, Joel M. Galloway
2012, Scientific Investigations Report 2012-5112
In response to concerns about water-quality impairments that may affect habitat degradation in Agassiz National Wildlife Refuge in northwest Minnesota, the U.S. Geological Survey, in cooperation with the U.S. Fish and Wildlife Service collected streamflow data, discrete nutrient and suspended- sediment samples, and continuous water-quality data from 2008 to 2010....
Temperature and petroleum generation history of the Wilcox Formation, Louisiana
Janet K. Pitman, Elisabeth L. Rowan
2012, Open-File Report 2012-1046
A one-dimensional petroleum system modeling study of Paleogene source rocks in Louisiana was undertaken in order to characterize their thermal history and to establish the timing and extent of petroleum generation. The focus of the modeling study was the Paleocene and Eocene Wilcox Formation, which contains the youngest source rock...
