Extended Abstract: Geologic evaluation of regional production trends in the Upper Cretaceous Austin Chalk
Krystal M. Pearson
2012, GCAGS Transactions (62) 593-597
The Upper Cretaceous Austin Chalk, which extends across Texas and Louisiana, is characterized by reservoirs that produce oil, gas, and in some cases, anomalously large amounts of water. Reservoirs typically have low matrix permeability and contain natural fractures. Horizontal drilling has been used to enhance and connect these fracture systems...
The western limits of the Seattle fault zone and its interaction with the Olympic Peninsula, Washington
A.P. Lamb, L.M. Liberty, Richard J. Blakely, Thomas L. Pratt, B.L. Sherrod, K. Van Wijk
2012, Geosphere (8) 915-930
We present evidence that the Seattle fault zone of Washington State extends to the west edge of the Puget Lowland and is kinemati-cally linked to active faults that border the Olympic Massif, including the Saddle Moun-tain deformation zone. Newly acquired high-resolution seismic reflection and marine magnetic data suggest that the...
Priority effects among young‐of‐the‐year fish: reduced growth of bluegill sunfish (Lepomis macrochirus) caused by yellow perch (Perca flavescens)?
Mark A. Kaemingk, Jeff C. Jolley, David W. Willis, Steven R. Chipps
2012, Freshwater Biology (57) 654-665
1. When available, Daphnia spp. are often preferred by age-0 yellow perch and bluegill sunfish because of energetic profitability. We hypothesised that predation by age-0 yellow perch could lead to a midsummer decline (MSD) of Daphnia spp. and that priority effects may favour yellow perch because they hatch before bluegill, allowing...
Partly cloudy with a chance of migration: Weather, radars, and aeroecology
Phillip B. Chilson, Winifred F. Frick, Jeffrey F. Kelly, Kenneth W. Howard, Ronald P. Larkin, Robert H. Diehl, John K. Westbrook, T. Adam Kelly, Thomas H. Kunz
2012, Bulletin of the American Meteorological Society (93) 669-686
Aeroecology is an emerging scientific discipline that integrates atmospheric science, Earth science, geography, ecology, computer science, computational biology, and engineering to further the understanding of biological patterns and processes. The unifying concept underlying this new transdisciplinary field of study is a focus on the planetary boundary layer and lower free...
Relations between altered stramflow variability and fish assemblages in Eastern USA streams
Michael R. Meador, Daren M. Carlisle
2012, River Research and Applications (28) 1359-1368
Although altered streamflow has been implicated as a major factor affecting fish assemblages, understanding the extent of streamflow alteration has required quantifying attributes of the natural flow regime. We used predictive models to quantify deviation from expected natural streamflow variability for streams in the eastern USA. Sites with >25% change...
Predicting ecological flow regime at ungaged sites: A comparison of methods
Jennifer C. Murphy, Rodney R. Knight, William J. Wolfe, W. Scott Gain
2012, River Research and Applications (29) 660-669
Nineteen ecologically relevant streamflow characteristics were estimated using published rainfall–runoff and regional regression models for six sites with observed daily streamflow records in Kentucky. The regional regression model produced median estimates closer to the observed median for all but two characteristics. The variability of predictions from both models was generally...
Groundwater conditions in Utah, spring of 2012
Carole B. Burden, David V. Allen, Christopher M. Holt, Martel J. Fisher, Paul Downhour, Lincoln Smith, Robert J. Eacret, Travis L. Gibson, Bradley A. Slaugh, Nickolas R. Whittier, James H. Howells, Howard K. Christiansen
2012, Cooperative Investigations Report 53
This is the forty-ninth in a series of annual reports that describe groundwater conditions in Utah. Reports in this series, published cooperatively by the U.S. Geological Survey and the Utah Department of Natural Resources, Division of Water Rights, and the Utah Department of Environmental Quality, Division of Water Quality, provide...
Acidification of Earth: An assessment across mechanisms and scales
Karen C. Rice, Janet S. Herman
2012, Applied Geochemistry (27) 14
In this review article, anthropogenic activities that cause acidification of Earth’s air, waters, and soils are examined. Although there are many mechanisms of acidification, the focus is on the major ones, including emissions from combustion of fossil fuels and smelting of ores, mining of coal and metal ores, and application...
Assessment of salinity intrusion in the James and Chickahominy Rivers as a result of simulated sea-level rise in Chesapeake Bay, East Coast, USA
Karen C. Rice, Bo Hong, Jian Shen
2012, Journal of Environmental Management (111) 61-69
Global sea level is rising, and the relative rate in the Chesapeake Bay region of the East Coast of the United States is greater than the worldwide rate. Sea-level rise can cause saline water to migrate upstream in estuaries and rivers, threatening freshwater habitat and drinking-water supplies. The effects of...
Evaluation of Bayesian estimation of a hidden continuous-time Markov chain model with application to threshold violation in water-quality indicators
Frank A. Deviney, Karen C. Rice, Donald E. Brown
2012, Journal of Environmental Informatics (19) 70-78
Natural resource managers require information concerning the frequency, duration, and long-term probability of occurrence of water-quality indicator (WQI) violations of defined thresholds. The timing of these threshold crossings often is hidden from the observer, who is restricted to relatively infrequent observations. Here, a model for the hidden process is linked with...
LiDAR - An emerging tool for geological applications
Jason M. Stoker
2012, Outcrop: The Newsletter of the Rocky Mountain Association of Geologists (61) 6-10
Over the past five to ten years the use and applicability of light detection and ranging (LiDAR) technology has increased dramatically. As a result, more and more LiDAR data now are being collected across the country for a wide range of applications, and LiDAR currently is the technology of choice...
Water-quality and lake-stage data for Wisconsin lakes, water years 2008−2011
S. Bridgett Manteufel, Daniel Olson, Dale M. Robertson, Gerald L. Goddard
2012, Open-File Report 2012-1238
The U.S. Geological Survey (USGS), in cooperation with local and other agencies, collects data at selected lakes throughout Wisconsin. These data, accumulated over many years, provide a data base for developing an improved understanding of the water quality of lakes. To make these data available to interested parties outside the...
Habitat associations of fish species of greatest conservation need in wadeable Iowa streams
Anthony R. Sindt, Michael C. Quist, Clay Pierce
2012, North American Journal of Fisheries Management 1046-1061
Fish and habitat data were collected from 84 wadeable stream reaches in the Mississippi River drainage of Iowa to predict the occurrences of seven fish species of greatest conservation need and to identify the relative importance of habitat variables measured at small (e.g., depth, velocity, and substrate) and large (e.g.,...
Impacts of mute swans (Cygnus olor) on submerged aquatic vegetation in Illinois River Valley backwaters
Joshua D. Stafford, Michael W. Eichholz, Adam C. Phillips
2012, Wetlands (32) 851-857
Wetland loss in North America has been considerable and well documented, and the establishment of exotic species in remaining wetlands can further reduce their ability to support native flora and fauna. In the Chesapeake Bay and Great Lakes ecosystems, exotic mute swans (Cygnus olor) have been found to...
Distribution and abundance of anadromous Sea Lamprey Spawners in a fragmented stream: Current status and potential range expansion following barrier removal
Joseph D. Zydlewski, Cory Gardner, Stephen M. Coghlan Jr.
2012, Northeastern Naturalist (19) 99-110
Dams fragment watersheds and prevent anadromous fishes from reaching historic spawning habitat. Sedgeunkedunk Stream, a small tributary to the Penobscot River (Maine), has been the focus of efforts to reestablish marine-freshwater connectivity and restore anadromous fishes via the removal of two barriers to fish migration. Currently, Petromyzon marinus (Sea Lamprey)...
Effects of smallmouth bass (Micropterus dolomeiu) on Atlantic salmon (Salmo salar) habitat use and diel movements in an artificial stream.
Joseph D. Zydlewski, Stephen M. Coghlan Jr., Joan G. Trial, Gus Wathen
2012, Transactions of the American Fisheries Society (141) 174-184
Invasive smallmouth bass Micropterus dolomieu have been introduced to some of the last remaining watersheds that contain wild anadromous Atlantic salmon Salmo salar, yet little is known about the interactions between these species. We used an artificial stream equipped with passive integrated transponder tag antenna arrays to monitor habitat use...
Use of olfactory cues by newly metamorphosed wood frogs (Lithobates sylvaticus) during emigration
Joseph D. Zydlewski, Viorel D. Popescu, Bekka S. Brodie, Malcom L. Hunter
2012, Copeia (2012) 424-431
Juvenile amphibians are capable of long-distance upland movements, yet cues used for orientation during upland movements are poorly understood. We used newly metamorphosed Wood Frogs (Lithobates sylvaticus) to investigate: (1) the existence of innate (i.e., inherited) directionality, and (2) the use of olfactory cues, specifically forested wetland and natal pond...
Using persuasive messages to encourage hunters to support regulation of lead shot
Susan A. Schroeder, David C. Fulton, William Penning, Kathy Doncarlos
2012, Journal of Wildlife Management (76) 1528-1539
Lead shot from hunting adds the toxic metal to environments worldwide. The United States banned lead shot for hunting waterfowl in 1991 and 26 states have lead shot restrictions beyond those mandated for waterfowl hunting. The Minnesota Department of Natural Resources (MDNR) was interested in studying hunter attitudes about expanded...
A comparison of approaches for estimating relative impacts of nonnative fishes
N.W.R. Lapointe, R. M. Pendleton, Paul L. Angermeier
2012, Environmental Management (49) 82-95
Lack of standard methods for quantifying impact has hindered risk assessments of high-impact invaders. To understand methodological strengths and weaknesses, we compared five approaches (in parentheses) for quantifying impact of nonnative fishes: reviewing documented impacts in a large-scale database (review); surveying fish biologists regarding three categories of impact (socioeconomic, ecological,...
Palila abundance estimates and trend
Richad Camp, Paul C. Banko
2012, Technical Report HCSU-TR033
The Palila (Loxioides bailleui) is an endangered, seed-eating, finch-billed honeycreeper found only on Hawai`i Island. Once occurring on the islands of Kaua`i and O`ahu and Mauna Loa and Hualālai volcanoes of Hawai`i, Palila are now found only in subalpine, dry-forest habitats on Mauna Kea (Banko et al. 2002). Previous analyses...
Lewis and Clark National Historical Park Elk Monitoring Program Annual Report 2010
Carla Cole, Paul Griffin, Kurt Jenkins
2012, Natural Resource Technical Report NPS/NCR/NCRO/NRTR 2012/531
Fiscal year 2010 was the second full year of elk monitoring protocol implementation at Lewis and Clark National Historical Park (LEWI), part of the North Coast and Cascades Network (NCCN) Inventory and Monitoring program. Elk monitoring at Lewis and Clark NHP includes two components. Fecal pellet surveys at a systematic...
Rock fall dynamics and deposition: an integrated analysis of the 2009 Ahwiyah Point rock fall, Yosemite National Park, USA.
Valerie L. Zimmer, Brian D. Collins, Greg M. Stock, Nicholas Sitar
2012, Earth Surface Processes and Landforms (37) 680-691
We analyzed a combination of airborne and terrestrial LiDAR, high-resolution photography, seismic, and acoustic data in order to gain insights into the initiation, dynamics, and talus deposition of a complex rock fall. A large (46 700 m3) rock fall originated from near Ahwiyah Point in eastern Yosemite Valley and fell a...
Earthquake studies reveal the magmatic plumbing system of the Katmai volcanoes
Clifford Thurber, Rachel Murphy, Stephanie G. Prejean, Matthew M. Haney, Ninfa Bennington, Lee Powell, John F. Paskievitch
2012, Alaska Park Science (11)
The 1912 eruption of Novarupta was the largest of the 1900s (Fierstein and Hildreth 2001, Hildreth et al. 2003). A century later, fundamental questions remain regarding the source of the magma for that eruption. A previous seismic study of the Katmai area (Jolly et al. 2007) identified a single large...
Water monitoring to support the State of Illinois Governor's Drought Response Task Force -August 7, 2012
U.S. Geological Survey
2012, Report
The U.S. Geological Survey (USGS) collects streamflow, groundwater level, and water-quality data for the State of Illinois and the Nation. Much of these data are collected every 15 minutes (real-time) as a part of the national network, so that water-resource managers can make decisions in a timely and reliable manner....
Landsat Update: Volume 6 Issue 4
2012, Landsat Update (6)
No abstract available....
