Prediction of fish and sediment mercury in streams using landscape variables and historical mining
Charles N. Alpers, Julie L. Yee, Joshua T. Ackerman, James L. Orlando, Darrell G. Slotton, Mark C. Marvin-DiPasquale
2016, Science of the Total Environment (571) 364-379
Widespread mercury (Hg) contamination of aquatic systems in the Sierra Nevada of California, U.S., is associated with historical use to enhance gold (Au) recovery by amalgamation. In areas affected by historical Au mining operations, including the western slope of the Sierra Nevada and downstream areas in northern California, such as...
Graphical function mapping as a new way to explore cause-and-effect chains
Mary Anne Evans
2016, Fisheries (41) 638-643
Graphical function mapping provides a simple method for improving communication within interdisciplinary research teams and between scientists and nonscientists. This article introduces graphical function mapping using two examples and discusses its usefulness. Function mapping projects the outcome of one function into another to show the combined effect. Using this mathematical...
Oxygen, hydrogen, sulfur, and carbon isotopes in the Pea Ridge magnetite-apatite deposit, southeast Missouri, and sulfur isotope comparisons to other iron deposits in the region
Craig A. Johnson, Warren C. Day, Robert O. Rye
2016, Economic Geology (111) 2017-2032
Oxygen, hydrogen, sulfur, and carbon isotopes have been analyzed in the Pea Ridge magnetite-apatite deposit, the largest historic producer among the known iron deposits in the southeast Missouri portion of the 1.5 to 1.3 Ga eastern granite-rhyolite province. The data were collected to investigate the sources of ore fluids,...
Iron and oxygen isotope signatures of the Pea Ridge and Pilot Knob magnetite-apatite deposits, southeast Missouri, USA
Tristan Childress, Adam C. Simon, Warren C. Day, Craig C. Lundstrom, Ilya N. Bindeman
2016, Economic Geology (111) 2033-2044
New O and Fe stable isotope ratios are reported for magnetite samples from high-grade massive magnetite of the Mesoproterozoic Pea Ridge and Pilot Knob magnetite-apatite ore deposits and these results are compared with data for other iron oxide-apatite deposits to shed light on the origin of the southeast Missouri deposits....
High nitrate concentrations in some Midwest United States streams in 2013 after the 2012 drought
Peter C. Van Metre, Jeffrey W. Frey, MaryLynn Musgrove, Naomi Nakagaki, Sharon L. Qi, Barbara Mahler, Michael E. Wieczorek, Daniel T. Button
2016, Journal of Environmental Quality (45) 1696-1704
Nitrogen sources in the Mississippi River basin have been linked to degradation of stream ecology and to Gulf of Mexico hypoxia. In 2013, the USGS and the USEPA characterized water quality stressors and ecological conditions in 100 wadeable streams across the midwestern United States. Wet conditions in 2013 followed a...
Temporal and spatial trends in nutrient and sediment loading to Lake Tahoe, California-Nevada, USA
Robert Coats, Jack Lewis, Nancy L. Alvarez, Patricia Arneson
2016, Journal of the American Water Resources Association (52) 1347-1365
Since 1980, the Lake Tahoe Interagency Monitoring Program (LTIMP) has provided stream-discharge and water quality data—nitrogen (N), phosphorus (P), and suspended sediment—at more than 20 stations in Lake Tahoe Basin streams. To characterize the temporal and spatial patterns in nutrient and sediment loading to the lake, and improve the usefulness...
Detection of water and/or hydroxyl on asteroid (16) Psyche
Driss Takir, Vishnu Reddy, Juan A. Sanchez, Michael K. Shepard, Joshua P. Emery
2016, Astronomical Journal (153)
In order to search for evidence of hydration on M-type asteroid (16) Psyche, we observed this object in the 3 μm spectral region using the long-wavelength cross-dispersed (LXD: 1.9–4.2 μm) mode of the SpeX spectrograph/imager at the NASA Infrared Telescope Facility. Our observations show that Psyche exhibits a 3 μm absorption feature, attributed...
Weather as a proximate explanation for fission–fusion dynamics in female northern long-eared bats
Krista J. Patriquin, Marty L. Leonard, Hugh G. Broders, W. Mark Ford, Eric R. Britzke, Alexander Silvis
2016, Animal Behaviour (122) 47-57
Fission–fusion dynamics appear common among temperate bats where females form roost groups that change in size and composition, as females switch roosts almost daily. One hypothesis for frequent roost switching is that females move to find suitable thermal conditions as ambient conditions change. Tests of this hypothesis have, however, been...
Genetic variation and structure in remnant population of critically endangered Melicope zahlbruckneri
J. A. Raji, Carter T. Atkinson
2016, Journal of Biodiversity & Endangered Species (4) 1-8
The distribution and amount of genetic variation within and between populations of plant species are important for their adaptability to future habitat changes and also critical for their restoration and overall management. This study was initiated to assess the genetic status of the remnant population of Melicope zahlbruckneri–a critically endangered...
Selected streambed sediment compounds and water toxicity results for Westside Creeks, San Antonio, Texas, 2014
Cassi L. Crow, Jennifer T. Wilson, James L. Kunz
2016, Fact Sheet 2016-3096
IntroductionThe Alazán, Apache, Martínez, and San Pedro Creeks in San Antonio, Texas, are part of a network of urban tributaries to the San Antonio River, known locally as the Westside Creeks. The Westside Creeks flow through some of the oldest neighborhoods in San Antonio. The disruption of streambed sediment is...
Tree regeneration by seed in bottomland hardwood forests: A review
Whitney A. Kroschel, Sammy L. King, Richard F. Keim
2016, Southeastern Naturalist (15) 42-60
Bottomland hardwood forests (BLH) are found in temperate, humid regions of the southeastern US, primarily on alluvial floodplains adjacent to rivers. Altered hydrology in rivers and floodplains has caused changes in stand development and species composition of BLHs. We hypothesize that the driving mechanisms behind these changes are related to...
Comparison of survey techniques on detection of northern flying squirrels
Corinne A. Diggins, L. Michelle Gilley, Christine A. Kelly, W. Mark Ford
2016, Wildlife Society Bulletin (40) 654-662
The ability to detect a species is central to the success of monitoring for conservation and management purposes, especially if the species is rare or endangered. Traditional methods, such as live capture, can be labor-intensive, invasive, and produce low detection rates. Technological advances and new approaches provide opportunities to more...
Gray wolf exposure to emerging vector-borne diseases in Wisconsin with comparison to domestic dogs and humans
Rocio F. Jara, Adrian P. Wydeven, Michael D. Samuel
2016, PLoS ONE (11) 1-17
World-wide concern over emerging vector-borne diseases has increased in recent years for both animal and human health. In the United Sates, concern about vector-borne diseases in canines has focused on Lyme disease, anaplasmosis, ehrlichiosis, and heartworm which infect domestic and wild canids. Of these diseases, Lyme and anaplasmosis are also...
Eastern Whip-poor-wills (Antrostomus vociferus) are positively associated with low elevation forest In the central Appalachians
Christina L. Slover, Todd E. Katzner
2016, Wilson Journal of Ornithology (128) 846-856
Populations of the Eastern Whip-poor-will (Antrostomus vociferus) are thought to be declining because of a range of potential factors including habitat loss, pesticide use, and predation. However, this species is nocturnal and, as a consequence, it is poorly studied, and its population status is not well assessed by traditional diurnal...
Anti-dog IgG secondary antibody successfully detects IgG in a variety of aquatic mammals
Katherine Roehl, Mark Jankowski, Erik K. Hofmeister
2016, Journal of Zoo and Wildlife Medicine (47) 970-976
Serological tests play an important role in the detection of wildlife diseases. However, while there are many commercial assays and reagents available for domestic species, there is a need to develop efficient serological assays for wildlife. In recent years, marine mammals have represented a wildlife group with emerging infectious diseases,...
New organic reference materials for hydrogen, carbon, and nitrogen stable isotope-ratio measurements: caffeines, n-alkanes, fatty acid methyl esters, glycines, L-valines, polyethylenes, and oils
Arndt Schimmelmann, Haiping Qi, Tyler B. Coplen, Willi A. Brand, Jon Fong, Wolfram Meier-Augenstein, Helen F. Kemp, Blaza Toman, Annika Ackermann, Sergey Assonov, Anita Aerts-Bijma, Ramona Brejcha, Yoshito Chikaraishi, Tamim Darwish, Martin Elsner, Matthias Gehre, Heike Geilmann, Manfred Groning, Jean-Francois Helie, Sara Herrero-Martin, Harro A.J. Meijer, Peter E. Sauer, Alex L. Sessions, Roland A. Werner
2016, Analytical Chemistry (88) 4294-4302
An international project developed, quality-tested, and determined isotope−δ values of 19 new organic reference materials (RMs) for hydrogen, carbon, and nitrogen stable isotope-ratio measurements, in addition to analyzing pre-existing RMs NBS 22 (oil), IAEA-CH-7 (polyethylene foil), and IAEA-600 (caffeine). These new RMs enable users to normalize measurements of samples to...
Controls on the geochemical evolution of Prairie Pothole Region lakes and wetlands over decadal time scales
Martin B. Goldhaber, Christopher T. Mills, David M. Mushet, R. Blaine McCleskey, Jennifer Rover
2016, Wetlands (36) 255-272
One hundred sixty-seven Prairie Pothole lakes, ponds and wetlands (largely lakes) previously analyzed chemically during the late 1960’s and early to mid-1970’s were resampled and reanalyzed in 2011–2012. The two sampling periods differed climatically. The earlier sampling took place during normal to slightly dry conditions, whereas the latter occurred during...
Observed and simulated hydrologic response for a first-order catchment during extreme rainfall 3 years after wildfire disturbance
Brian A. Ebel, Francis K. Rengers, Gregory E. Tucker
2016, Water Resources Research (52) 9367-9389
Hydrologic response to extreme rainfall in disturbed landscapes is poorly understood because of the paucity of measurements. A unique opportunity presented itself when extreme rainfall in September 2013 fell on a headwater catchment (i.e., <1 ha) in Colorado, USA that had previously been burned by a wildfire in 2010. We...
Response of fish assemblages to decreasing acid deposition in Adirondack Mountain lakes
Barry P. Baldigo, Karen Roy, Charles T. Driscoll
2016, NYSERDA Report 17-01
The CAA and other federal regulations have clearly reduced emissions of NOx and SOx, acidic deposition, and the acidity and toxicity of waters in the ALTM lakes, but these changes have not triggered widespread recovery of brook trout populations or fish communities. The lack of detectable biological recovery appears to...
Re-Occupancy of Breeding Territories by Ferruginous Hawks in Wyoming: Relationships to Environmental and Anthropogenic Factors
Zachary P. Wallace, Patricia L. Kennedy, John R. Squires, Robert J. Oakleaf, Lucretia E. Olson, Katie M. Dugger
2016, PLoS ONE (11)
Grassland and shrubland birds are declining globally due in part to anthropogenic habitat modification. Because population performance of these species is also influenced by non-anthropogenic factors, it is important to incorporate all relevant ecological drivers into demographic models. We used design-based sampling and occupancy models to test relationships of environmental...
Origins of a national seismic system in the United States
John R. Filson, Walter J. Arabasz
2016, Seismological Research Letters (88) 131-143
This historical review traces the origins of the current national seismic system in the United States, a cooperative effort that unifies national, regional, and local‐scale seismic monitoring within the structure of the Advanced National Seismic System (ANSS). The review covers (1) the history and technological evolution of U.S. seismic networks leading...
Effects of stream-adjacent logging in fishless headwaters on downstream coastal cutthroat trout
Douglas S. Bateman, Matthew R. Sloat, Robert E. Gresswell, Aaron M. Berger, David Hockman-Wert, David W. Leer, Arne E. Skaugset
2016, Canadian Journal of Fisheries and Aquatic Sciences (73) 1898-1913
To investigate effects of headwater logging on downstream coastal cutthroat trout (Oncorhynchus clarkii clarkii) populations, we monitored stream habitat and biotic indicators including biomass, abundance, growth, movement, and survival over 8 years using a paired-watershed approach. Reference and logged catchments were located on private industrial forestland on ∼60-year harvest rotation....
Unmanned aircraft systems in wildlife research: Current and future applications of a transformative technology
Katherine S. Christie, Sophie L. Gilbert, Casey L. Brown, Michael Hatfield, Leanne Hanson
2016, Frontiers in Ecology and the Environment (14) 241-251
Unmanned aircraft systems (UAS) – also called unmanned aerial vehicles (UAVs) or drones – are an emerging tool that may provide a safer, more cost-effective, and quieter alternative to traditional research methods. We review examples where UAS have been used to document wildlife abundance, behavior, and habitat, and illustrate the...
Identifying alternate pathways for climate change to impact inland recreational fishers
Len M. Hunt, Eli P. Fenichel, David C. Fulton, Robert Mendelsohn, Jordan W. Smith, Tyler D. Tunney, Abigail J. Lynch, Craig P. Paukert, James E. Whitney
2016, Fisheries (41) 362-372
Fisheries and human dimensions literature suggests that climate change influences inland recreational fishers in North America through three major pathways. The most widely recognized pathway suggests that climate change impacts habitat and fish populations (e.g., water temperature impacting fish survival) and cascades to impact fishers. Climate change also impacts recreational...
The Bonneville Flood—A veritable débâcle
Jim E. O'Connor
2016, Book chapter, Developments in earth surface processes, vol. 20
The Bonneville Flood was one of the largest floods on Earth. First discovered by G.K. Gilbert in the 1870s during his inspection of the outlet at Red Rock Pass, it was rediscovered in the 1950s by Harold Malde and coworkers, leading to mapping and assessment of spectacular flood features along...
