Simulated effect of topography and soil properties on hydrologic response and landslide potential under variable rainfall conditions in the Oregon Coast Range, USA
Benjamin B. Mirus, Joel B. Smith, Jonathan W. Godt, R.L. Baum, Jeffrey A. Coe
2016, Conference Paper, Landslides and engineered slopes. Experience, theory and practice Proceedings of the 12th International Symposium on Landslides
No abstract available....
Variability in the sensitivity among model simulations of permafrost and carbon dynamics in the permafrost region between 1960 and 2009
A. David McGuire, Charles Koven, David M. Lawrence, Joy S. Clein, Jiangyang Xia, Christian Beer, Eleanor J. Burke, Guangsheng Chen, Xiaodong Chen, Christine Delire, Elchin Jafarov, Andrew H. MacDougall, Sergey S. Marchenko, Dmitry J. Nicolsky, Shushi Peng, Annette Rinke, Kazuyuki Saito, Wenxin Zhang, Ramdane Alkama, Theodore J. Bohn, Philippe Ciais, Bertrand Decharme, Altug Ekici, Isabelle Gouttevin, Tomohiro Hajima, Daniel J. Hayes, Duoying Ji, Gerhard Krinner, Dennis P. Lettenmaier, Yiqi Luo, Paul A. Miller, John C. Moore, Vladimir Romanovsky, Christina Schädel, Kevin Schaefer, Edward A.G. Schuur, Benjamin Smith, Tetsuo Sueyoshi, Qianlai Zhuang
2016, Global Biogeochemical Cycles (30) 1015-1037
A significant portion of the large amount of carbon (C) currently stored in soils of the permafrost region in the Northern Hemisphere has the potential to be emitted as the greenhouse gases CO2and CH4 under a warmer climate. In this study we evaluated the variability in the sensitivity of permafrost and...
Infectious diseases of wolves in Yellowstone
Emily S. Almberg, Paul C. Cross, Peter J. Hudson, Andrew P. Dobson, Douglas W. Smith, Daniel R. Stahler
2016, Yellowstone Science (24) 47-49
The summer of 2005 began with such promise for wolves in Yellowstone. The population had been at an all-time high the last few years, and the wolves appeared to be in good condition. Several packs had been particularly busy during the breeding season, and early summer pup counts suggested another...
National Park Service Vegetation Mapping Inventory Program: Natchez Trace Parkway vegetation mapping project report
Kevin D. Hop, Andrew C. Strassman, Carl Nordman, Milo Pyne, Rickie White, Joseph Jakusz, Erin E. Hoy, Jennifer Dieck
2016, Natural Resource Report NPS/GULN/NRR—2016/1255
The National Park Service (NPS) Vegetation Mapping Inventory (VMI) Program is an effort to classify, describe, and map existing vegetation of national park units for the NPS Natural Resource Inventory and Monitoring (I&M) Program. The NPS VMI Program is managed by the NPS I&M Division and provides baseline vegetation information...
Fault zone characteristics and basin complexity in the southern Salton Trough, California
Patricia Persaud, Yiran Ma, Joann M. Stock, John A. Hole, Gary S. Fuis, Liang Han
2016, Geology (44) 747-750
Ongoing oblique slip at the Pacific–North America plate boundary in the Salton Trough produced the Imperial Valley (California, USA), a seismically active area with deformation distributed across a complex network of exposed and buried faults. To better understand the shallow crustal structure in this region and the connectivity of faults...
Finite-element modelling of physics-based hillslope hydrology, Keith Beven, and beyond
Keith Loague, Brian A. Ebel
2016, Hydrological Processes (30) 2432-2437
Keith Beven is a voice of reason on the intelligent use of models and the subsequent acknowledgement/assessment of the uncertainties associated with environmental simula-tion. With several books and hundreds of papers, Keith’s work is widespread, well known, and highly referenced. Four of Keith’s most notable contributions are the iconic TOPMODEL...
Climate change effects on North American inland fish populations and assemblages
Abigail J. Lynch, Bonnie Myers, Cindy Chu, Lisa A. Eby, Jeffrey A. Falke, Ryan P. Kovach, Trevor J. Krabbenhoft, Thomas J. Kwak, John Lyons, Craig P. Paukert, James E. Whitney
2016, Fisheries (41) 346-361
Climate is a critical driver of many fish populations, assemblages, and aquatic communities. However, direct observational studies of climate change impacts on North American inland fishes are rare. In this synthesis, we (1) summarize climate trends that may influence North American inland fish populations and assemblages, (2) compile 31 peer-reviewed...
Bayesian nitrate source apportionment to individual groundwater wells in the Central Valley by use of elemental and isotopic tracers
Katherine M Ransom, Mark N. Grote, Amanda Deinhart, Gary Eppich, Carol Kendall, Matthew E. Sanborn, A. Kate Sounders, Joshua Wimpenny, Qing-zhu Yin, Megan B. Young, Thomas Harter
2016, Water Resources Research (52) 5577-5597
Groundwater quality is a concern in alluvial aquifers that underlie agricultural areas, such as in the San Joaquin Valley of California. Shallow domestic wells (less than 150 m deep) in agricultural areas are often contaminated by nitrate. Agricultural and rural nitrate sources include dairy manure, synthetic fertilizers, and septic waste....
Predicting arsenic in drinking water wells of the Central Valley, California
Joseph D. Ayotte, Bernard T. Nolan, JoAnn M. Gronberg
2016, Environmental Science & Technology (50) 7555-7563
Probabilities of arsenic in groundwater at depths used for domestic and public supply in the Central Valley of California are predicted using weak-learner ensemble models (boosted regression trees, BRT) and more traditional linear models (logistic regression, LR). Both methods captured major processes that affect arsenic concentrations, such as the chemical...
Comparison of methods to monitor the distribution and impacts of unauthorized travel routes in a border park
Todd C. Esque, Richard D. Inman, Kenneth E. Nussear, Robert Webb, M.M. Girard, J. DeGayner
2016, Natural Areas Journal (36) 248-258
The distribution and abundance of human-caused disturbances vary greatly through space and time and are cause for concern among land stewards in natural areas of the southwestern border-lands between the USA and Mexico. Human migration and border protection along the international boundary create Unauthorized Trail and Road (UTR) networks across...
The statistical power to detect cross-scale interactions at macroscales
Tyler Wagner, C. Emi Fergus, Craig A. Stow, Kendra S. Cheruvelil, Patricia A. Soranno
2016, Ecosphere (7)
Macroscale studies of ecological phenomena are increasingly common because stressors such as climate and land-use change operate at large spatial and temporal scales. Cross-scale interactions (CSIs), where ecological processes operating at one spatial or temporal scale interact with processes operating at another scale, have been documented in a variety of...
Earthquake geology and paleoseismology of major strands of the San Andreas fault system
Thomas Rockwell, Katherine M. Scharer, Timothy E. Dawson
2016, Book chapter, Applied geology in California
The San Andreas fault system in California is one of the best-studied faults in the world, both in terms of the long-term geologic history and paleoseismic study of past surface ruptures. In this paper, we focus on the Quaternary to historic data that have been collected from the major strands...
Depredation of the California Ridgway’s rail: Causes and distribution
Michael L. Casazza, Cory T. Overton, Thuy-Vy D. Bui, John Y. Takekawa, Angela M. Merritt, J.M. Hull
2016, Conference Paper, Proceedings of the 27th Vertebrate Pest Conference
We studied the causes of mortality for the California Ridgway’s rail at multiple tidal marshes in the San Francisco Bay Estuary, California. We radio-marked 196 individual rails and examined the evidence from 152 recovered California Ridgway’s rail mortalities from our radio-marked sample and determined plausible cause of death from a...
Dermocystidium sp. infection in Blue Ridge Sculpin captured in Maryland
Vicki S. Blazer, Nathaniel P. Hitt, Craig D. Snyder, Erin Snook, Cynthia R. Adams
2016, Journal of Aquatic Animal Health (28) 143-149
Raised pale cysts were observed on Blue Ridge Sculpin Cottus caeruleomentum during stream fish community surveys in Catoctin Mountain Park, Maryland. When examined histologically, preserved sculpin exhibited multiple cysts containing spherical endospores with a refractile central body characteristic of Dermocystidiumspp. Cysts were not observed on the gills or internally. The...
Geology and hydrocarbon potential of the Hartford-Deerfield Basin, Connecticut and Massachusetts
James L. Coleman
2016, GCSSEPM Foundation Perkins-Rosen Research Conference Proceedings (34) 195-214
The Hartford-Deerfield basin, a Late Triassic to Early Jurassic rift basin located in central Connecticut and Massachusetts, is the northernmost basin of the onshore Mesozoic rift basins in the eastern United States. The presence of asphaltic petroleum in outcrops indicates that at least one active petroleum system has existed within...
Ungulate browsers promote herbaceous layer diversity in logged temperate forests
Edward K. Faison, Stephen DeStefano, David R. Foster, Glenn Motzkin, Josh Rapp
2016, Ecology and Evolution (6) 4591-4602
Ungulates are leading drivers of plant communities worldwide, with impacts linked to animal density, disturbance and vegetation structure, and site productivity. Many ecosystems have more than one ungulate species; however, few studies have specifically examined the combined effects of two or more species on plant communities. We examined the extent...
Contemporary deformation in the Yakima fold and thrust belt estimated with GPS
Robert McCaffrey, Robert W. King, Ray E. Wells, Matthew Lancaster, M. Meghan Miller
2016, Geophysical Journal International (207) 1-11
Geodetic, geologic and palaeomagnetic data reveal that Oregon (western USA) rotates clockwise at 0.3 to 1.0° Ma−1 (relative to North America) about an axis near the Idaho–Oregon–Washington border, while northeast Washington is relatively fixed. This rotation has been going on for at least 15 Ma. The Yakima fold and thrust...
Discovery of alunite in Cross crater, Terra Sirenum, Mars: Evidence for acidic, sulfurous waters
Bethany L. Ehlmann, Gregg A. Swayze, Ralph E. Milliken, John F. Mustard, Roger N. Clark, Scott L. Murchie, George N. Breit, James J. Wray, Brigitte Gondet, Francois Poulet, John Carter, Wendy M. Calvin, William Benzel, Kimberly D. Seelos
2016, American Mineralogist (101) 1527-1542
Cross crater is a 65 km impact crater, located in the Noachian highlands of the Terra Sirenum region of Mars (30°S, 158°W), which hosts aluminum phyllosilicate deposits first detected by the Observatoire pour la Minéralogie, L’Eau, les Glaces et l’Activitié (OMEGA) imaging spectrometer on Mars Express. Using high-resolution data from...
Hydrogeologic controls on groundwater discharge and nitrogen loads in a coastal watershed
Chrtopher J. Russoniello, Leonard F. Konikow, Kevin D. Kroeger, Cristina Fernandez, A. Scott Andres, Holly A. Michael
2016, Journal of Hydrology (538) 783-793
Submarine groundwater discharge (SGD) is a small portion of the global water budget, but a potentially large contributor to coastal nutrient budgets due to high concentrations relative to stream discharge. A numerical groundwater flow model of the Inland Bays Watershed, Delaware, USA, was developed to identify the primary hydrogeologic factors...
The impact of onsite wastewater disposal systems on groundwater in areas inundated by Hurricane Sandy in New York and New Jersey
Irene Fisher, Patrick J. Phillips, Kaitlyn Colella, Shawn C. Fisher, Tristen N. Tagliaferri, William T. Foreman, Edward T. Furlong
2016, Marine Pollution Bulletin (107) 509-517
Coastal onsite wastewater disposal systems (OWDS) were inundated by Hurricane Sandy's storm tide. This study compares the shallow groundwater quality (nutrients, pharmaceuticals, and hormones) downgradient of OWDS before and after Hurricane Sandy, where available, and establishes a baseline for wastewater influence on groundwater in coastal communities inundated by Hurricane Sandy....
Rare earths: Market disruption, innovation, and global supply chains
Roderick Eggert, Cyrus Wadia, Corby Anderson, Diana Bauer, Fletcher Fields, Lawrence D. Meinert, Patrick Taylor
2016, Environment and Resources (41) 199-222
Rare earths, sometimes called the vitamins of modern materials, captured public attention when their prices increased more than ten-fold in 2010 and 2011. As prices fell between 2011 and 2016, rare earths receded from public view—but less visibly they became a major focus of innovative activity in companies, government laboratories...
Episodic bedrock erosion by gully-head migration, Colorado High Plains, USA
Francis K. Rengers, G.E. Tucker, Shannon Mahan
2016, Earth Surface Processes and Landforms (41) 1574-1582
This study explores the frequency of bedrock exposure in a soil-mantled low-relief (i.e. non-mountainous) landscape. In the High Plains of eastern Colorado, gully headcuts are among the few erosional features that will incise through the soil mantle to expose bedrock. We measured the last time of bedrock exposure using optically...
Comparison of wastewater-associated contaminants in the bed sediment of Hempstead Bay, New York, before and after Hurricane Sandy
Shawn C. Fisher, Patrick J. Phillips, Bruce J. Brownawell, James Browne
2016, Marine Pollution Bulletin (107) 499-508
Changes in bed sediment chemistry of Hempstead Bay (HB) have been evaluated in the wake of Hurricane Sandy, which resulted in the release of billions of liters of poorly-treated sewage into tributaries and channels throughout the bay. Surficial grab samples (top 5 cm) collected before and (or) after Hurricane...
Flood-inundation maps for Lake Champlain in Vermont and in northern Clinton County, New York
Robert H. Flynn, Laura Hayes
2016, Scientific Investigations Report 2016-5060
Digital flood-inundation maps for an approximately100-mile length of Lake Champlain in Addison, Chittenden, Franklin, and Grand Isle Counties in Vermont and northern Clinton County in New York were created by the U.S. Geological Survey (USGS) in cooperation with the International Joint Commission (IJC). The flood-inundationmaps, which can be accessed through...
Regional variability in bed-sediment concentrations of wastewater compounds, hormones and PAHs for portions of coastal New York and New Jersey impacted by hurricane Sandy
Patrick J. Phillips, Cathy A Gibson, Shawn C. Fisher, Irene Fisher, Timothy J. Reilly, Kelly L. Smalling, Kristin M. Romanok, William T. Foreman, Rhiannon C. ReVello, Michael J. Focazio, Daniel K. Jones
2016, Marine Pollution Bulletin (107) 489-498
Bed sediment samples from 79 coastal New York and New Jersey, USA sites were analyzed for 75 compounds including wastewater associated contaminants, PAHs, and other organic compounds to assess the post-Hurricane Sandy distribution of organic contaminants among six regions. These results provide the first assessment of wastewater compounds, hormones, and...
