Changes in streamflow characteristics in Wisconsin as related to precipitation and land use
Warren A. Gebert, Herbert S. Garn, William J. Rose
2016, Scientific Investigations Report 2015-5140
Streamflow characteristics were determined for 15 longterm streamflow-gaging stations for the periods 1915–2008, 1915–68, and 1969–2008 to identify trends. Stations selected represent flow characteristics for the major river basins in Wisconsin. Trends were statistically significant at the 95 percent confidence level at 13 of the 15 streamflow-gaging stations for various...
Population dynamics and evaluation of alternative management strategies for nonnative Lake Trout in Priest Lake, Idaho
Elizabeth L. Ng, Jim P. Fredericks, Michael C. Quist
2016, North American Journal of Fisheries Management (36) 40-54
Lake Trout Salvelinus namaycush have been introduced widely throughout the western USA to enhance recreational fisheries, but high predatory demand can create challenges for management of yield and trophy fisheries alike. Lake Trout were introduced to Priest Lake, Idaho, during the 1920s, but few fishery-independent data are available to guide...
Resprouting and seeding hypotheses: A test of the gap-dependent model using resprouting and obligate seeding subspecies of Arctostaphylos
Jon E. Keeley, V. Thomas Parker, Michael C. Vasey
2016, Plant Ecology (217) 743-750
Ecological factors favoring either postfire resprouting or postfire obligate seeding in plants have received considerable attention recently. Three ecological models have been proposed to explain patterns of these two life history types. In this study, we test these three models using data from California chaparral. We take an...
Evidence for an ice shelf covering the central Arctic Ocean during the penultimate glaciation
Martin Jakobsson, Johan Nilsson, Leif G. Anderson, Jan Backman, Goran Bjork, Thomas M. Cronin, Nina Kirchner, Andrey Koshurnikov, Larry Mayer, Riko Noormets, Matthew O’Regan, Christian Stranne, Roman Ananiev, Natalia Barrientos Macho, Dennis Cherniykh, Helen Coxall, Bjorn Eriksson, Tom Floden, Laura Gemery, Orjan Gustafsson, Kevin Jerram, Carina Johansson, Alexey Khortov, Rezwan Mohammad, Igor Semiletov
2016, Nature Communications (7)
The hypothesis of a km-thick ice shelf covering the entire Arctic Ocean during peak glacial conditions was proposed nearly half a century ago. Floating ice shelves preserve few direct traces after their disappearance, making reconstructions difficult. Seafloor imprints of ice shelves should, however, exist where ice grounded along their flow...
Differential uplift and incision of the Yakima River terraces, central Washington State
Adrian M. Bender, Colin B. Amos, Paul R. Bierman, Dylan Rood, Lydia M. Staisch, Harvey M. Kelsey, Brian Sherrod
2016, Journal of Geophysical Research (121) 365-384
The fault-related Yakima folds deform Miocene basalts and younger deposits of the Columbia Plateau in central Washington State. Geodesy implies ~2 mm/yr of NNE directed shortening across the folds, but until now the distribution and rates of Quaternary deformation among individual structures has been unclear. South of Ellensburg, Washington, the Yakima...
Tomographic image of a seismically active volcano: Mammoth Mountain, California
Phillip B. Dawson, Bernard A. Chouet, Andrew M. Pitt
2016, Journal of Geophysical Research B: Solid Earth (121) 114-133
High-resolution tomographic P wave, S wave, and VP/VS velocity structure models are derived for Mammoth Mountain, California, using phase data from the Northern California Seismic Network and a temporary deployment of broadband seismometers. An anomalous volume (5.1 × 109 to 5.9 × 1010m3) of low P and low S wave...
Radiocarbon dating of silica sinter deposits in shallow drill cores from the Upper Geyser Basin, Yellowstone National Park
Jacob B. Lowenstern, Shaul Hurwitz, John McGeehin
2016, Journal of Volcanology and Geothermal Research (310) 132-136
To explore the timing of hydrothermal activity at the Upper Geyser Basin (UGB) in Yellowstone National Park, we obtained seven new accelerator mass spectrometry (AMS) radiocarbon 14C ages of carbonaceous material trapped within siliceous sinter. Five samples came from depths of 15–152 cm within the Y-1 well, and two samples were from...
Hydrologic conditions in the South Coast aquifer, Puerto Rico, 2010–15
Sigfredo Torres-Gonzalez, Jose M. Rodriguez
2016, Open-File Report 2015-1215
In 1958, the U.S. Geological Survey began documenting hydrologic conditions, including groundwater levels, groundwater withdrawals for agricultural irrigation and public water supply, and water quality, in the South Coast aquifer, Puerto Rico. This information has improved the understanding of the water resources of the region. The hydrologic data indicate that...
Lake oxygen isotopes as recorders of North American Rocky Mountain hydroclimate: Holocene patterns and variability at multi-decadal to millennial time scales
Lesleigh Anderson, Max Berkelhammer, John A. Barron, Byron A. Steinman, Bruce P. Finney, Mark B. Abbott
2016, Global and Planetary Change (137) 131-148
Lake sediment oxygen isotope records (calcium carbonate-δ18O) in the western North American Cordillera developed during the past decade provide substantial evidence of Pacific ocean–atmosphere forcing of hydroclimatic variability during the Holocene. Here we present an overview of 18 lake sediment δ18O records along with a new compilation of lake water...
Assessing the impact of Hurricanes Irene and Sandy on the morphology and modern sediment thickness on the inner continental shelf offshore of Fire Island, New York
William C. Schwab, Wayne E. Baldwin, Jane F. Denny
2016, Open-File Report 2015-1238
This report documents the changes in seabed morphology and modern sediment thickness detected on the inner continental shelf offshore of Fire Island, New York, before and after Hurricanes Irene and Sandy made landfall. Comparison of acoustic backscatter imagery, seismic-reflection profiles, and bathymetry collected in 2011 and in 2014 show that...
Exposure of native bees foraging in an agricultural landscape to current-use pesticides
Michelle Hladik, Mark W. Vandever, Kelly L. Smalling
2016, Science of the Total Environment (542) 469-477
The awareness of insects as pollinators and indicators of environmental quality has grown in recent years, partially in response to declines in honey bee (Apis mellifera) populations. While most pesticide research has focused on honey bees, there has been less work on native bee populations. To determine the exposure of...
Hydrogeological framework, numerical simulation of groundwater flow, and effects of projected water use and drought for the Beaver-North Canadian River alluvial aquifer, northwestern Oklahoma
Derek W. Ryter, Jessica S. Correll
2016, Scientific Investigations Report 2015-5183
This report describes a study of the hydrology, hydrogeological framework, numerical groundwater-flow models, and results of simulations of the effects of water use and drought for the Beaver-North Canadian River alluvial aquifer, northwestern Oklahoma. The purpose of the study was to provide analyses, including estimating equal-proportionate-share (EPS) groundwater-pumping rates and...
Relations between rainfall–runoff-induced erosion and aeolian deposition at archaeological sites in a semi-arid dam-controlled river corridor
Brian D. Collins, David Bedford, Skye C. Corbett, Helen C. Fairley, Collin Cronkite-Ratcliff
2016, Earth Surface Processes and Landforms (41) 899-917
Process dynamics in fluvial-based dryland environments are highly complex with fluvial, aeolian, and alluvial processes all contributing to landscape change. When anthropogenic activities such as dam-building affect fluvial processes, the complexity in local response can be further increased by flood- and sediment-limiting flows. Understanding these complexities is key to predicting...
Cannibalistic-morph Tiger Salamanders in unexpected ecological contexts
Kyle I. McLean, Craig A. Stockwell, David M. Mushet
2016, American Midland Naturalist (175) 64-72
Barred tiger salamanders [Ambystoma mavortium (Baird, 1850)] exhibit two trophic morphologies; a typical and a cannibalistic morph. Cannibalistic morphs, distinguished by enlarged vomerine teeth, wide heads, slender bodies, and cannibalistic tendencies, are often found where conspecifics occur at high density. During 2012 and 2013, 162 North Dakota wetlands and lakes...
Comparison of four different energy balance models for estimating evapotranspiration in the Midwestern United States
Ramesh K. Singh, Gabriel B. Senay
2016, Water (8)
The development of different energy balance models has allowed users to choose a model based on its suitability in a region. We compared four commonly used models—Mapping EvapoTranspiration at high Resolution with Internalized Calibration (METRIC) model, Surface Energy Balance Algorithm for Land (SEBAL) model, Surface Energy Balance System (SEBS) model,...
Larval dispersal underlies demographically important inter-system connectivity in a Great Lakes yellow perch (Perca flavescens) population
Reed M. Brodnik, Michael E. Fraker, Eric J. Anderson, Lucia Carreon-Martinez, Kristen M. DeVanna, Dan D. Heath, Julie M. Reichert, Edward F. Roseman, Stuart A. Ludsin
2016, Canadian Journal of Fisheries and Aquatic Sciences (73) 416-426
Ability to quantify connectivity among spawning subpopulations and their relative contribution of recruits to the broader population is a critical fisheries management need. By combining microsatellite and age information from larval yellow perch (Perca flavescens) collected in the Lake St. Clair – Detroit River system (SC-DRS) and western Lake Erie...
The effects of heterospecifics and climatic conditions on incubation behavior within a mixed-species colony
Peter S. Coates, Brianne E. Brussee, Roger L. Hothem, Kristy H. Howe, Michael L. Casazza, John M. Eadie
2016, Journal of Avian Biology (47) 399-408
Parental incubation behavior largely influences nest survival, a critical demographic process in avian population dynamics, and behaviors vary across species with different life history breeding strategies. Although research has identified nest survival advantages of mixing colonies, behavioral mechanisms that might explain these effects is largely lacking. We examined parental incubation...
Tradeoff between assessment and control of aquatic invasive species: A case study of sea lamprey management in the St. Marys River
Jason M. Robinson, Michael J. Wilberg, Jean V. Adams, Michael L. Jones
2016, North American Journal of Fisheries Management (36) 11-20
Allocating resources between the gathering of information to guide management actions and implementing those actions presents an inherent tradeoff. This tradeoff is evident for control of the Sea Lamprey Petromyzon marinus in the St. Marys River, connecting Lakes Huron and Superior and a major source of parasitic Sea Lampreys to Lake Huron...
Identify potential lock treatment options to prevent movement of aquatic invasive species through the Chicago Area Waterways System (CAWS)
Terrance D. Hubert, Michael A. Boogaard, Kim T. Fredricks
2016, Open-File Report 2016-1001
Introduction The Illinois River is a primary tributary of the Mississippi River, connecting with the Mississippi at Grafton, Illinois. The headwaters of the river are at the confluence of the Des Plaines and Kankakee Rivers in eastern Grundy County, Illinois. Approximately 273 miles long, it runs through the heart of Illinois...
Assigning sex and reproductive stage to adult Lake Sturgeon using ultrasonography and common morphological measurements
Justin A. Chiotti, James C. Boase, Darryl W. Hondorp, Andrew S. Briggs
2016, North American Journal of Fisheries Management (36) 21-29
Sex determination of fish species is difficult to assess when sexual dimorphism and gametes are not apparent. For threatened and endangered fish species, noninvasive techniques are needed when determining sex to minimize stress and the potential for mortality. We evaluated the use of a portable ultrasound unit to determine sex...
Age, growth, and size of Lake Superior Pygmy Whitefish (Prosopium coulterii)
Taylor Stewart, Derek Ogle, Owen T. Gorman, Mark Vinson
2016, American Midland Naturalist (175) 24-36
Pygmy Whitefish (Prosopium coulterii) are a small, glacial relict species with a disjunct distribution in North America and Siberia. In 2013 we collected Pygmy Whitefish at 28 stations from throughout Lake Superior. Total length was recorded for all fish and weight and sex were recorded and scales and otoliths were...
Diel feeding ecology of Slimy Sculpin in a tributary to Skaneateles Lake, New York
Marc A. Chalupnicki, James H. Johnson
2016, American Midland Naturalist (175) 37-46
Interactions among the benthic community are typically overlooked but play an important role in fish community dynamics. We examined the diel feeding ecology of Slimy Sculpin (Cottus cognatus) from Grout Brook, a tributary to Skaneateles Lake. Of the six time periods examined, Slimy Sculpin consumed the least during the nighttime...
Integrative modelling reveals mechanisms linking productivity and plant species richness
James B. Grace, T. Michael Anderson, Eric W. Seabloom, Elizabeth T. Borer, Peter B. Adler, W Stanley Harpole, Yann Hautier, Helmut Hillebrand, Eric M. Lind, Meelis Partel, Jonathan D. Bakker, Yvonne M. Buckley, Michael J. Crawley, Ellen Ingman Damschen, Kendi F. Davies, Philip A. Fay, Jennifer Firn, Daniel S. Gruner, Andy Hector, Johannes M.H. Knops, Andrew S. MacDougall, Brett A. Melbourne, John W. Morgan, John L. Orrock, Suzanne M. Prober, Melinda D. Smith
2016, Nature (529) 390-393
How ecosystem productivity and species richness are interrelated is one of the most debated subjects in the history of ecology. Decades of intensive study have yet to discern the actual mechanisms behind observed global patterns. Here, by integrating the predictions from multiple theories into a single model and using data...
Application of a Weighted Regression Model for Reporting Nutrient and Sediment Concentrations, Fluxes, and Trends in Concentration and Flux for the Chesapeake Bay Nontidal Water-Quality Monitoring Network, Results Through Water Year 2012
Jeffrey G. Chanat, Douglas L. Moyer, Joel D. Blomquist, Kenneth E. Hyer, Michael J. Langland
2016, Scientific Investigations Report 2015-5133
In the Chesapeake Bay watershed, estimated fluxes of nutrients and sediment from the bay’s nontidal tributaries into the estuary are the foundation of decision making to meet reductions prescribed by the Chesapeake Bay Total Maximum Daily Load (TMDL) and are often the basis for refining scientific understanding of the watershed-scale...
A shift in bloater consumption in Lake Michigan between 1993 and 2011 and its effects on Diporeia and Mysis prey
Steven A. Pothoven, David B. Bunnell
2016, Transactions of the American Fisheries Society (145) 59-68
Bioenergetics modeling was used to determine individual and population consumption by Bloater Coregonus hoyi in Lake Michigan during three time periods with variable Bloater density: 1993–1996 (high), 1998–2002 (intermediate), and 2009–2011 (low). Despite declines in Bloater abundance between 1993 and 2011, our results did not show any density-dependent compensatory response...
