Estimating risks for water-quality exceedances of total-copper from highway and urban runoff under predevelopment and current conditions with the Stochastic Empirical Loading and Dilution Model (SELDM)
Gregory E. Granato, Susan C. Jones
Christopher N. Dunn, Brian Van Weele, editor(s)
2017, Conference Paper, World environmental and water resources congress 2017: Watershed management, irrigation and drainage, and water resources planning and management
The stochastic empirical loading and dilution model (SELDM) was used to demonstrate methods for estimating risks for water-quality exceedances of event-mean concentrations (EMCs) of total-copper. Monte Carlo methods were used to simulate stormflow, total-hardness, suspended-sediment, and total-copper EMCs as stochastic variables. These simulations were done for the Charles River Basin...
Hierarchical, quantitative biogeographic provinces for all North American turtles and their contribution to the biogeography of turtles and the continent
Joshua R. Ennen, Wilfredo A. Matamoros, Mickey Agha, Jeffrey E. Lovich, Sarah C. Sweat, Christopher W. Hoagstrom
2017, Herpetological Monographs (31) 114-140
Our study represents the first attempt to describe biogeographic provinces for North American (México, United States, and Canada) turtles. We analyzed three nested data sets separately: (1) all turtles, (2) freshwater turtles, and (3) aquatic turtles. We georeferenced North American turtle distributions, then we created presence–absence matrices for each of...
Combining multiple earthquake models in real time for earthquake early warning
Sarah E. Minson, Stephen Wu, James L Beck, Thomas H. Heaton
2017, Bulletin of the Seismological Society of America (107) 1868-1882
The ultimate goal of earthquake early warning (EEW) is to provide local shaking information to users before the strong shaking from an earthquake reaches their location. This is accomplished by operating one or more real‐time analyses that attempt to predict shaking intensity, often by estimating the earthquake’s location and magnitude...
Observed variations in U.S. frost timing linked to atmospheric circulation patterns
Courtenay Strong, Gregory J. McCabe
2017, Nature Communications (8)
Several studies document lengthening of the frost-free season within the conterminous United States (U.S.) over the past century, and report trends in spring and fall frost timing that could stem from hemispheric warming. In the absence of warming, theory and case studies link anomalous frost timing to atmospheric circulation anomalies....
Using multi-date satellite imagery to monitor invasive grass species distribution in post-wildfire landscapes: An iterative, adaptable approach that employs open-source data and software
Amanda M. West, Paul H. Evangelista, Catherine S. Jarnevich, Sunil Kumar, Aaron Swallow, Matthew Luizza, Steve Chignell
2017, International Journal of Applied Earth Observation and Geoinformation (59) 135-146
Among the most pressing concerns of land managers in post-wildfire landscapes are the establishment and spread of invasive species. Land managers need accurate maps of invasive species cover for targeted management post-disturbance that are easily transferable across space and time. In this study, we sought to develop an iterative, replicable...
Effects of extreme floods on macroinvertebrate assemblages in tributaries to the Mohawk River, New York, USA
Mirian R. Calderon, Barry P. Baldigo, Alexander J. Smith, Theodore A. Endreny
2017, River Research and Applications (33) 1060-1070
Climate change is forecast to bring more frequent and intense precipitation to New York which has motivated research into the effects of floods on stream ecosystems. Macroinvertebrate assemblages were sampled at 13 sites in the Mohawk River basin during August 2011, and again in October 2011, following historic floods caused...
Biological and land use controls on the isotopic composition of aquatic carbon in the Upper Mississippi River Basin
Britta Voss, Kimberly P. Wickland, George R. Aiken, Robert G. Striegl
2017, Global Biogeochemical Cycles (31) 1271-1288
Riverine ecosystems receive organic matter (OM) from terrestrial sources, internally produce new OM, and biogeochemically cycle and modify organic and inorganic carbon. Major gaps remain in the understanding of the relationships between carbon sources and processing in river systems. Here we synthesize isotopic, elemental, and molecular properties of dissolved organic...
Altitudinal migration and the future of an iconic Hawaiian honeycreeper in response to climate change and management
Alban Guillaumet, Wendy A. Kuntz, Michael D. Samuel, Eben H. Paxton
2017, Ecological Monographs (87) 410-428
Altitudinal movement by tropical birds to track seasonally variable resources can move them from protected areas to areas of increased vulnerability. In Hawaiʻi, historical reports suggest that many Hawaiian honeycreepers such as the ‘I‘iwi (Drepanis coccinea) once undertook seasonal migrations, but the existence of such movements today is unclear. Because...
Stable C, O and clumped isotope systematics and 14C geochronology of carbonates from the Quaternary Chewaucan closed-basin lake system, Great Basin, USA: Implications for paleoenvironmental reconstructions using carbonates
Adam M. Hudson, Jay Quade, Guleed Ali, Douglas P. Boyle, Scott Bassett, Katharine W. Huntington, Marie G. De los Santos, Andrew S. Cohen, Ke Lin, Xiangfeng Wang
2017, Geochimica et Cosmochimica Acta (212) 274-302
Isotopic compositions of lacustrine carbonates are commonly used for dating and paleoenvironmental reconstructions. Here we use carbonate δ13C and δ18O, clumped (Δ47), and 14C compositions to better understand the carbonate isotope system in closed-basin lakes and trace the paleohydrologic and temperature evolution in the Chewaucan closed-basin lake system, northern Great...
Recent stability of resident and migratory landbird populations in National Parks of the Pacific Northwest
Chris Ray, James Saracco, Mandy Holmgren, Robert Wilkerson, Rodney Siegel, Kurt J. Jenkins, Jason I. Ransom, Patricia J. Happe, John Boetsch, Mark Huff
2017, Ecosphere (8)
Monitoring species in National Parks facilitates inference regarding effects of climate change on population dynamics because parks are relatively unaffected by other forms of anthropogenic disturbance. Even at early points in a monitoring program, identifying climate covariates of population density can suggest vulnerabilities to future change. Monitoring landbird populations in...
Multiple methods for multiple futures: Integrating qualitative scenario planning and quantitative simulation modeling for natural resource decision making
Amy J. Symstad, Nicholas A. Fisichelli, Brian W. Miller, Erika Rowland, Gregor W. Schuurman
2017, Climate Risk Management (17) 78-91
Scenario planning helps managers incorporate climate change into their natural resource decision making through a structured “what-if” process of identifying key uncertainties and potential impacts and responses. Although qualitative scenarios, in which ecosystem responses to climate change are derived via expert opinion, often suffice for managers to begin addressing climate...
Oxygen and U-Th isotopes and the timescales of hydrothermal exchange and melting in granitoid wall rocks at Mount Mazama, Crater Lake, Oregon
Meagan E. Ankney, Charles R. Bacon, John W. Valley, Brian L. Beard, Clark M. Johnson
2017, Geochimica et Cosmochimica Acta (213) 137-154
We report new whole rock U-Th and in-situ oxygen isotope compositions for partially melted (0–50 vol% melt), low-δ18O Pleistocene granitoid blocks ejected during the ∼7.7 ka caldera-forming eruption of Mt. Mazama (Crater Lake, Oregon). The blocks are interpreted to represent wall rocks of the climactic magma chamber that, prior to eruption, experienced variable...
Field-trip guide to Mount St. Helens, Washington - An overview of the eruptive history and petrology, tephra deposits, 1980 pyroclastic density current deposits, and the crater
John S. Pallister, Michael A. Clynne, Heather M. Wright, Alexa R. Van Eaton, James W. Vallance, David R. Sherrod, B. Peter Kokelaar
2017, Scientific Investigations Report 2017-5022-D
This field trip will provide an introduction to several fascinating features of Mount St. Helens. The trip begins with a rigorous hike of about 15 km from the Johnston Ridge Observatory (9 km north-northeast of the crater vent), across the 1980 Pumice Plain, to Windy Ridge (3.6 km northeast of...
Geomorphic response of the North Fork Stillaguamish River to the State Route 530 landslide near Oso, Washington
Scott W. Anderson, Mackenzie K. Keith, Christopher S. Magirl, J. Rose Wallick, Mark C. Mastin, James R. Foreman
2017, Scientific Investigations Report 2017-5055
On March 22, 2014, the State Route 530 Landslide near Oso, Washington mobilized 8 million cubic meters of unconsolidated Pleistocene material, creating a valley‑spanning deposit that fully impounded the North Fork Stillaguamish River. The river overtopped the 8-meter high debris impoundment within 25 hours and began steadily incising a new...
The National Map seamless digital elevation model specifications
Christy-Ann M. Archuleta, Eric W. Constance, Samantha T. Arundel, Amanda J. Lowe, Kimberly S. Mantey, Lori A. Phillips
2017, Techniques and Methods 11-B9
This specification documents the requirements and standards used to produce the seamless elevation layers for The National Map of the United States. Seamless elevation data are available for the conterminous United States, Hawaii, Alaska, and the U.S. territories, in three different resolutions—1/3-arc-second, 1-arc-second, and 2-arc-second. These specifications include requirements and...
Identifying ecologically relevant scales of habitat selection: diel habitat selection in elk
Caleb P. Roberts, James W. Cain III, Robert D. Cox
2017, Ecosphere (8) 1-16
Although organisms make resource selection decisions at multiple spatiotemporal scales, not all scales are ecologically relevant to any given organism. Ecological patterns and rhythms such as behavioral and climatic patterns may provide a consistent method for identifying ecologically relevant scales of habitat selection. Using elk (Cervus canadensis) as an example...
Suitability of oyster restoration sites along the Louisiana coast: Examining site and stock × site interaction
Lindsay Schwarting Miller, Jerome F. La Peyre, Megan K. LaPeyre
2017, Journal of Shellfish Research (36) 341-351
Recognition of the global loss of subtidal oyster reefs has led to a rise in reef restoration efforts, including in the Gulf of Mexico. Created reef success depends entirely on selecting a location that supports long-term oyster growth and survival, including the recruitment and survival of on-reef oysters. Significant changes...
Incorporating Allee effects into the potential biological removal level
Humza Hadier, Sarah Oldfield, Tiffany Tu, Rosa Moreno, Jay E. Diffendorfer, Eric A. Eager, Richard A. Erickson
2017, Natural Resource Modeling (30) 1-16
Potential biological removal (PBR) is an approach used to calculate sustainable harvest and “take” limits for populations. PBR was originally derived assuming logistic growth while ignoring the effects of small population size (i.e., an Allee effect). We derived a version of PBR that includes an Allee effect (i.e., small population...
Integrating geographically isolated wetlands into land management decisions
Heather E. Golden, Irena F. Creed, Genevieve Ali, Nandita Basu, Brian Neff, Mark C. Rains, Daniel L. McLaughlin, Laurie C. Alexander, Ali A. Ameli, Jay R. Christensen, Grey R. Evenson, Charles N. Jones, Charles R. Lane, Megan Lang
2017, Frontiers in Ecology and the Environment (15) 319-327
Wetlands across the globe provide extensive ecosystem services. However, many wetlands – especially those surrounded by uplands, often referred to as geographically isolated wetlands (GIWs) – remain poorly protected. Protection and restoration of wetlands frequently requires information on their hydrologic connectivity to other surface waters, and their cumulative watershed‐scale effects....
Geochemical characterization of groundwater discharging from springs north of the Grand Canyon, Arizona, 2009–2016
Kimberly R. Beisner, Fred D. Tillman, Jessica R. Anderson, Ronald C. Antweiler, Donald J. Bills
2017, Scientific Investigations Report 2017-5068
A geochemical study was conducted on 37 springs discharging from the Toroweap Formation, Coconino Sandstone, Hermit Formation, Supai Group, and Redwall Limestone north of the Grand Canyon near areas of breccia-pipe uranium mining. Baseline concentrations were established for the elements As, B, Li, Se, SiO2, Sr, Tl, U, and V....
Mapping tree density in forests of the southwestern USA using Landsat 8 data
Kamal Humagain, Carlos Portillo-Quintero, Robert D. Cox, James W. Cain III
2017, Forests (8) 1-15
The increase of tree density in forests of the American Southwest promotes extreme fire events, understory biodiversity losses, and degraded habitat conditions for many wildlife species. To ameliorate these changes, managers and scientists have begun planning treatments aimed at reducing fuels and increasing understory biodiversity. However, spatial variability in tree...
A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
Henry D. Adams, Melanie Zeppel, William R.L. Anderegg, Henrik Hartmann, Simon M. Landhausser, David T. Tissue, Travis E. Huxman, Patrick J. Hudson, Trenton E. Franz, Craig D. Allen, Leander D. L. Anderegg, Greg A. Barron-Gafford, David Beerling, David D. Breshears, Timothy J. Brodribb, Harald Bugmann, Richard C. Cobb, Adam D. Collins, L. Turin Dickman, Honglang Duan, Brent E. Ewers, Lucia Galiano, David A. Galvez, Nuria Garcia-Forner, Monica L. Gaylord, Matthew J. Germino, Arthur Gessler, Uwe G. Hacke, Rodrigo Hakamada, Andy Hector, Michael W. Jenkins, Jeffrey M. Kane, Thomas E. Kolb, Darin J. Law, James D. Lewis, Jean-Marc Limousin, David Love, Alison K. Macalady, Jordi Martínez-Vilalta, Maurizio Mencuccini, Patrick J. Mitchell, Jordan D. Muss, Michael J. O’Brien, Anthony P. O’Grady, Robert E. Pangle, Elizabeth A. Pinkard, Frida I. Piper, Jennifer Plaut, William T. Pockman, Joe Quirk, Keith Reinhardt, Francesco Ripullone, Michael G. Ryan, Anna Sala, Sanna Sevanto, John S. Sperry, Rodrigo Vargas, Michel Vennetier, Danielle A. Way, Chonggang Wu, Enrico A. Yepez, Nate G. McDowell
2017, Nature Ecology & Evolution (1) 1285-1291
Widespread tree mortality associated with drought has been observed on all forested continents and global change is expected to exacerbate vegetation vulnerability. Forest mortality has implications for future biosphere–atmosphere interactions of carbon, water and energy balance, and is poorly represented in dynamic vegetation models. Reducing uncertainty requires improved mortality projections...
Landscape capability predicts upland game bird abundance and occurrence
Zachary G. Loman, Erik J. Blomberg, William DeLuca, Daniel J. Harrison, Cyndy Loftin, Petra B. Wood
2017, Journal of Wildlife Management (81) 1110-1116
Landscape capability (LC) models are a spatial tool with potential applications in conservation planning. We used survey data to validate LC models as predictors of occurrence and abundance at broad and fine scales for American woodcock (Scolopax minor) and ruffed grouse (Bonasa umbellus). Landscape capability models were reliable predictors of...
Connecting crustal seismicity and earthquake-driven stress evolution in Southern California
Frederick Pollitz, Camilla Cattania
2017, Journal of Geophysical Research B: Solid Earth (122) 6473-6490
Tectonic stress in the crust evolves during a seismic cycle, with slow stress accumulation over interseismic periods, episodic stress steps at the time of earthquakes, and transient stress readjustment during a postseismic period that may last months to years. Static stress transfer to surrounding faults has been well documented to...
Systems approaches for coastal hazard assessment and resilience
Scott C. Hagen, Davina Passeri, Matthew V. Bilskie, Denise E. DeLorme, David Yoskowitz
2017, Book chapter, Oxford Research Encyclopedia of Natural Hazard Science
The framework presented herein supports a changing paradigm in the approaches used by coastal researchers, engineers, and social scientists to model the impacts of climate change and sea level rise (SLR) in particular along low-gradient coastal landscapes. Use of a System of Systems (SoS) approach to the coastal dynamics of...
