The international scale of the groundwater issue
Michael Fienen, Muhammad Arshad
2016, Book chapter, Integrated groundwater management
Throughout history, and throughout the world, groundwater has been a major source of water for sustaining human life. Use of this resource has increased dramatically over the last century. In many areas of the world, the balance between human and ecosystem needs is difficult to maintain. Understanding the international scale...
Seismic velocities within the sedimentary succession of the Canada Basin and southern Alpha-Mendeleev Ridge, Arctic Ocean: evidence for accelerated porosity reduction?
John Shimeld, Qingmou Li, Deping Chian, Nina Lebedeva-Ivanova, Ruth Jackson, David Mosher, Deborah R. Hutchinson
2016, Geophysical Journal International (204) 1-20
The Canada Basin and the southern Alpha-Mendeleev ridge complex underlie a significant proportion of the Arctic Ocean, but the geology of this undrilled and mostly ice-covered frontier is poorly known. New information is encoded in seismic wide-angle reflections and refractions recorded with expendable sonobuoys between 2007 and 2011. Velocity–depth samples...
Science framework for the conservation and restoration strategy of DOI secretarial order 3336: Utilizing resilience and resistance concepts to assess threats to sagebrush ecosystems and greater sage-grouse, prioritize conservation and restoration actions, and inform management strategies
Jeanne C. Chambers, Steve Campbell, John Carlson, Jeffrey L. Beck, Karen J. Clause, Jonathan B. Dinkins, Kevin E. Doherty, Shawn Espinosa, Kathleen A. Griffin, Thomas J. Christiansen, Michele R. Crist, Steve E. Hanser, Douglas W. Havlina, Kenneth F. Henke, Jacob D. Hennig, Laurie L. Kurth, Jeremy D. Maestas, Kenneth E. Mayer, Mary E. Manning, Brian A. Mealor, Clinton McCarthy, Mike Pellant, Karen L. Prentice, Marco A. Perea, Lief A. Wiechman, David A. Pyke, Amarina Wuenschel
2016, Report
The Science Framework for the Conservation and Restoration Strategy of the Department of the Interior, Secretarial Order 3336 (SO 3336), Rangeland Fire Prevention, Management and Restoration, provides a strategic, multiscale approach for prioritizing areas for management and determining effective management strategies across the sagebrush biome. The emphasis of this version...
Resilience
Craig R. Allen, Ahjond S. Garmestani, David G. Angeler
2016, Book chapter, Oxford Bibliographies in Environmental Science
No abstract available....
Non-linear responses of glaciated prairie wetlands to climate warming
W. Carter Johnson, Brett Werner, Glenn R. Guntenspergen
2016, Climatic Change (134) 209-223
The response of ecosystems to climate warming is likely to include threshold events when small changes in key environmental drivers produce large changes in an ecosystem. Wetlands of the Prairie Pothole Region (PPR) are especially sensitive to climate variability, yet the possibility that functional changes may occur more rapidly with...
Geologic and geophysical maps and volcanic history of the Kelton Pass SE and Monument Peak SW Quadrangles, Box Elder County, Utah
Tracey J. Felger, David M. Miller, Victoria E. Langenheim, Robert J. Fleck
2016, Miscellaneous Publication 16-1DM
The Kelton Pass SE and Monument Peak SW 7.5' quadrangles are located in Box Elder County, northwestern Utah (figure 1; plate 1). The northern boundary of the map area is 8.5 miles (13.7 km) south of the Utah-Idaho border, and the southern boundary reaches the edge of mud flats at...
Application of an extreme winter storm scenario to identify vulnerabilities, mitigation options, and science needs in the Sierra Nevada mountains, USA
Christine M. Albano, Michael D. Dettinger, Maureen McCarthy, Kevin D. Schaller, Toby Wellborn, Dale A. Cox
2016, Natural Hazards (80) 879-900
In the Sierra Nevada mountains (USA), and geographically similar areas across the globe where human development is expanding, extreme winter storm and flood risks are expected to increase with changing climate, heightening the need for communities to assess risks and better prepare for such events. In this case study, we...
Field and laboratory determination of water-surface elevation and velocity using noncontact measurements
Jonathan M. Nelson, Paul J. Kinzel, Mark Walter Schmeeckle, Richard R. McDonald, Justin T. Minear
2016, Conference Paper, Proceedings of the 20th Congress of the Asia Pacific Division of the International Association for Hydro Environment Engineering & Research
Noncontact methods for measuring water-surface elevation and velocity in laboratory flumes and rivers are presented with examples. Water-surface elevations are measured using an array of acoustic transducers in the laboratory and using laser scanning in field situations. Water-surface velocities are based on using particle image velocimetry or other machine vision...
Synthesis of juvenile lamprey migration and passage research and monitoring at Columbia and Snake River Dams
Matthew G. Mesa, Lisa K. Weiland, Helena E. Christiansen
2016, Report
We compiled and summarized previous sources of data and research results related to the presence, numbers, and migration timing characteristics of juvenile (eyed macropthalmia) and larval (ammocoetes) Pacific lamprey Entosphenus tridentatus, in the Columbia River basin (CRB). Included were data from various screw trap collections, data from historic fyke net...
Rapid environmental change drives increased land use by an Arctic marine predator
Todd C. Atwood, Elizabeth L. Peacock, Melissa A. McKinney, Kate Lillie, Ryan H. Wilson, David C. Douglas, Pat Terletzky, Susanne Miller
2016, PLoS ONE (6)
In the Arctic Ocean’s southern Beaufort Sea (SB), the length of the sea ice melt season (i.e., period between the onset of sea ice break-up in summer and freeze-up in fall) has increased substantially since the late 1990s. Historically, polar bears (Ursus maritimus) of the SB have mostly remained on...
The value of closed-circuit rebreathers for biological research
Richrad L. Pyle, Phillip S. Lobel, Joseph A. Tomoleoni
2016, Conference Paper, Rebreathers and Scientific Diving. Proceedings of NPS/NOAA/DAN/AAUS
Closed-circuit rebreathers have been used for underwater biological research since the late 1960s, but have only started to gain broader application within scientific diving organizations within the past two decades. Rebreathers offer certain specific advantages for such research, especially for research involving behavior and surveys that depend on unobtrusive observers...
Estimating abundance: Chapter 27
J. Andrew Royle
2016, Book chapter, Reptile ecology and conservation: A handbook of techniques
This chapter provides a non-technical overview of ‘closed population capture–recapture’ models, a class of well-established models that are widely applied in ecology, such as removal sampling, covariate models, and distance sampling. These methods are regularly adopted for studies of reptiles, in order to estimate abundance from counts of marked individuals...
Estimating abundance
Chris Sutherland, J. Andrew Royle
2016, Book chapter, Reptile ecology and conservation: A handbook of techniques
This chapter provides a non-technical overview of ‘closed population capture–recapture’ models, a class of well-established models that are widely applied in ecology, such as removal sampling, covariate models, and distance sampling. These methods are regularly adopted for studies of reptiles, in order to estimate abundance from counts of marked individuals...
By-products of porphyry copper and molybdenum deposits
David A. John, Ryan D. Taylor
Philip L. Verplanck, Murray W. Hitzman, editor(s)
2016, Book chapter, Rare earth and critical elements in ore deposits
Porphyry Cu and porphyry Mo deposits are large to giant deposits ranging up to >20 and 1.6 Gt of ore, respectively, that supply about 60 and 95% of the world’s copper and molybdenum, as well as significant amounts of gold and silver. These deposits form from hydrothermal systems that affect...
Stronger or longer: Discriminating between Hawaiian and Strombolian eruption styles
Bruce F. Houghton, Jacopo Taddeucci, D. Andronico, H Gonnerman, M Pistolesi, Matthew R. Patrick, Tim R. Orr, Don Swanson, M Edmonds, Rebecca J. Carey, P. Scarlato
2016, Geology (44) 163-166
The weakest explosive volcanic eruptions globally, Strombolian explosions and Hawaiian fountaining, are also the most common. Yet, despite over a hundred years of observations, no classifications have offered a convincing, quantitative way of demarcating these two styles. New observations show that the two styles are distinct in their eruptive timescale,...
Acadia National Park Climate Change Scenario Planning Workshop summary
Jonathan Star, Nicholas Fisichelli, Alexander Bryan, Amanda Babson, Rebecca Cole-Will, Abraham J. Miller-Rushing
2016, Conference Paper
This report summarizes outcomes from a two-day scenario planning workshop for Acadia National Park, Maine (ACAD). The primary objective of the workshop was to help ACAD senior leadership make management and planning decisions based on up-to-date climate science and assessments of future uncertainty. The workshop was also designed as a...
Trophic overlap between native and invasive stream crayfish
Daniel D. Magoulick, Glenn L. Piercey
2016, Hydrobiologia (766) 237-246
We examined trophic dynamics of a stream food web where invasive Orconectes neglectus appear to be displacing native O. eupunctus in the Spring River drainage of the Ozark Highlands, Missouri and Arkansas, USA. We collected crayfish species and possible food sources seasonally from a site of sympatry on the South Fork Spring River. We...
Decision analysis for habitat conservation of an endangered, range-limited salamander
Orin J. Robinson, Conor P. McGowan, J.J. Apodaca
2016, Animal Conservation (19) 561-569
Many species of conservation concern are habitat limited and often a major focus of management for these species is habitat acquisition and/or restoration. Deciding the location of habitat restoration or acquisition to best benefit a protected species can be a complicated subject with competing management objectives, ecological uncertainties and stochasticity....
Microhabitat suitability and niche breadth of common and imperiled Atlantic Slope freshwater mussels
Tamara J. Pandolfo, Thomas J. Kwak, W. Gregory Cope
2016, Freshwater Mollusk Biology and Conservation (19) 27-50
Knowledge of the habitat suitability of freshwater mussels (family Unionidae) is necessary for effective decision making in conservation and management. We empirically measured microhabitat use for 10 unionid mussel species, including the U.S. federally endangered Alasmidonta heterodon, at 20 sites in the Tar River basin, North Carolina, USA. We also...
Geology of the Mount Rogers area, revisited: Evidence of Neoproterozoic continental rifting, glaciation, and the opening and closing of the Iapetus ocean, Blue Ridge, VA–NC–TN
Arthur J. Merschat, C. Scott Southworth, Christopher S. Holm-Denoma, Ryan J. McAleer
Arthur J. Merschat, editor(s)
2016, Book chapter, Geology of the Mount Rogers area, revisited, Blue Ridge, VA–NC–TN: Carolina Geological Society Annual Field Trip Guidebook
Recent field and geochronological studies in eight 7.5-minute quadrangles near Mount Rogers in Virginia, North Carolina and Tennessee recognize important stratigraphic and structural relationships for the Neoproterozoic Mount Rogers and Konnarock formations, the northeast end of the Mountain City window, the separation of Mesoproterozoic rocks of the Blue Ridge into...
Discontinuities concentrate mobile predators: Quantifying organism-environment interactions at a seascape scale
Christina G. Kennedy, Martha E. Mather, Joseph M. Smith, John T. Finn, Linda A. Deegan
2016, Ecosphere (7)
Understanding environmental drivers of spatial patterns is an enduring ecological problem that is critical for effective biological conservation. Discontinuities (ecologically meaningful habitat breaks), both naturally occurring (e.g., river confluence, forest edge, drop-off) and anthropogenic (e.g., dams, roads), can influence the distribution of highly mobile organisms that have land- or seascape...
Potentiometric surface and water-level difference maps of selected confined aquifers in Southern Maryland and Maryland’s Eastern Shore, 1975-2015
Stephen E. Curtin, Andrew W. Staley, David C. Andreasen
2016, Report
Key Results This report presents potentiometric-surface maps of the Aquia and Magothy aquifers and the Upper Patapsco, Lower Patapsco, and Patuxent aquifer systems using water levels measured during September 2015. Water-level difference maps are also presented for these aquifers. The water-level differences in the Aquia aquifer are shown using groundwater-level data...
Conservation planning for the Colorado River in Utah
Christine Rasmussen, Patrick B. Shafroth
2016, Report
Strategic planning is increasingly recognized as necessary for providing the greatest possible conservation benefits for restoration efforts. Rigorous, science-based resource assessment, combined with acknowledgement of broader basin trends, provides a solid foundation for determining effective projects. It is equally important that methods used to prioritize conservation investments are simple and...
Watershed-scale changes in terrestrial nitrogen cycling during a period of decreased atmospheric nitrate and sulfur deposition
Robert D. Sabo, Sara E. Scanga, Gregory B. Lawrence, David M. Nelson, Keith N. Eshleman, Gabriel A. Zabala, Alexandria A. Alinea, Charles D. Schirmer
2016, Atmospheric Environment (146) 271-279
Recent reports suggest that decreases in atmospheric nitrogen (N) deposition throughout Europe and North America may have resulted in declining nitrate export in surface waters in recent decades, yet it is unknown if and how terrestrial N cycling was affected. During a period of decreased atmospheric N deposition, we assessed...
Deserts
Jayne Belnap, Robert H. Webb, Todd Esque, Matthew L. Brooks, Lesley A. DeFalco, James A. MacMahon
2016, Book chapter, Ecosystems of California
The deserts of California (Lead photo, Fig. 1) occupy approximately 38% of California’s landscape (Table 1) and consist of three distinct deserts: the Great Basin Desert, Mojave Desert, and Colorado Desert, the latter of which is a subdivision of the Sonoran Desert (Brown and Lowe 1980). The wide range of...
