Using an experimental manipulation to determine the effectiveness of a stock enhancement program
David R. Stewart, James M. Long
2015, Freshwater Ecology
We used an experimental manipulation to determine the impact of stocking 178 mm channel catfish Ictalurus punctatus in six impoundments. The study design consisted of equal numbers (two) of control, ceased-stock, and stocked treatments that were sampled one year before and two years after stocking. Relative abundance, growth, size structure, and average...
Lapland longspur mortality at an oil well drilling rig site, Laramie County, Wyoming
Pedro Ramirez Jr., Kimberly K. Dickerson, Jim Lindstrom, Carol U. Meteyer, Scott Darrah
2015, Wildlife Society Bulletin (39) 165-168
Two hundred fifty-one Lapland longspur (Calcarius lapponicus) carcasses were recovered around an oil well drilling rig in Laramie County, Wyoming, USA, on December 13–14, 2010, apparent victims of a winter storm and “light entrapment” from the lights on the drilling rig during foggy conditions. We found Lapland longspur carcasses distributed...
Pharmaceuticals and other contaminants of emerging concern in landfill leachate of the United States
Dana W. Kolpin, Jason R. Masoner, Edward T. Furlong, Isabelle M. Cozzarelli, James L. Gray, Eric A. Schwab
2015, Norman Network Bulletin 10-11
Landfills are commonly the final respository for a heterogeneous mixture of waste from residential, commercial, and industrial sources. The use of landfills as a means of waste disposal will likely increase as the global population increases and nations develop. Thus, landfills receiving such waste have the potential to produce leachate...
Revision of Tympanopleura Eigenmann (Siluriformes: Auchenipteridae) with description of two new species
Stephen J. Walsh, Frank Ribeiro, Lucia H. Rapp Py-Daniel
2015, Neotropical Ichthyology (13) 1-46
The Neotropical catfish genus Tympanopleura, previously synonymized within Ageneiosus, is revalidated and included species are reviewed. Six species are recognized, two of which are described as new. Tympanopleura is distinguished from Ageneiosus by having an enlarged gas bladder not strongly encapsulated in bone; a prominent pseudotympanum consisting of an area on the side of the body...
Two magma bodies beneath the summit of Kilauea Volcano unveiled by isotopically distinct melt deliveries from the mantle
Aaron J. Pietruszka, Daniel E. Heaton, Jared P. Marske, Michael O. Garcia
2015, Earth and Planetary Science Letters (413) 90-100
The summit magma storage reservoir of Kīlauea Volcano is one of the most important components of the magmatic plumbing system of this frequently active basaltic shield-building volcano. Here we use new high-precision Pb isotopic analyses of Kīlauea summit lavas—from 1959 to the active Halema‘uma‘u lava lake—to infer the number, size,...
Bidirectional recovery patterns of Mojave Desert vegetation in an aqueduct pipeline corridor after 36 years: I. Perennial shrubs and grasses
Kristin H. Berry, James F. Weigand, Timothy A. Gowan, Jeremy S. Mack
2015, Journal of Arid Environments (124) 413-425
We studied recovery of 21 perennial plant species along a severely disturbed aqueduct corridor in a Larrea tridentata-Ambrosia dumosa plant alliance in the Mojave Desert 36 years after construction. The 97-m wide corridor contained a central dirt road and buried aqueduct pipeline. We established transects at 0 m (road verge), 20 m and 40 m...
Multiscale geophysical imaging of the critical zone
Andy Parsekian, Kamini Singha, Burke J. Minsley, W. Steven Holbrook, Lee Slater
2015, Reviews of Geophysics (53) 1-26
Details of Earth's shallow subsurface—a key component of the critical zone (CZ)—are largely obscured because making direct observations with sufficient density to capture natural characteristic spatial variability in physical properties is difficult. Yet this inaccessible region of the CZ is fundamental to processes that support ecosystems, society, and the environment....
Characterizing Congo Basin rainfall and climate using Tropical Rainfall Measuring Mission (TRMM) satellite data and limited rain gauge ground observations
Yolande A. Munzimi, Matthew C. Hansen, Bernard Adusei, Gabriel B. Senay
2015, Journal of Applied Meteorology and Climatology (54) 541-555
Quantitative understanding of Congo River basin hydrological behavior is poor because of the basin’s limited hydrometeorological observation network. In cases such as the Congo basin where ground data are scarce, satellite-based estimates of rainfall, such as those from the joint NASA/JAXA Tropical Rainfall Measuring Mission (TRMM), can be used to...
Monitoring and modeling wetland chloride concentrations in relationship to oil and gas development
Max Post van der Burg, Brian A. Tangen
2015, Journal of Environmental Management (150) 120-127
Extraction of oil and gas via unconventional methods is becoming an important aspect of energy production worldwide. Studying the effects of this development in countries where these technologies are being widely used may provide other countries, where development may be proposed, with some insight in terms of concerns associated with...
Quantifying suspended sediment loads delivered to Cheney Reservoir, Kansas: Temporal patterns and management implications
Mandy L. Stone, Kyle E. Juracek, Jennifer L. Graham, Guy M. Foster
2015, Journal of Soil and Water Conservation (70) 91-100
Cheney Reservoir, constructed during 1962 to 1965, is the primary water supply for the city of Wichita, the largest city in Kansas. Sediment is an important concern for the reservoir as it degrades water quality and progressively decreases water storage capacity. Long-term data collection provided a unique opportunity to estimate...
Uranium isotopes and dissolved organic carbon in loess permafrost: Modeling the age of ancient ice
Stephanie A. Ewing, James B. Paces, J.A. O'Donnell, M.T. Jorgenson, M.Z. Kanevskiy, George R. Aiken, Y. Shur, Jennifer W. Harden, Robert G. Striegl
2015, Geochimica et Cosmochimica Acta (152) 143-165
The residence time of ice in permafrost is an indicator of past climate history, and of the resilience and vulnerability of high-latitude ecosystems to global change. Development of geochemical indicators of ground-ice residence times in permafrost will advance understanding of the circumstances and evidence of permafrost formation, preservation, and thaw...
Landscape community genomics: understanding eco-evolutionary processes in complex environments
Brian K. Hand, Winsor H. Lowe, Ryan P. Kovach, Clint C. Muhlfeld, Gordon Luikart
2015, Trends in Ecology and Evolution (30) 161-168
Extrinsic factors influencing evolutionary processes are often categorically lumped into interactions that are environmentally (e.g., climate, landscape) or community-driven, with little consideration of the overlap or influence of one on the other. However, genomic variation is strongly influenced by complex and dynamic interactions between environmental and community effects. Failure to...
Flow management and fish density regulate salmonid recruitment and adult size in tailwaters across western North America
Kimberly L. Dibble, Charles B. Yackulic, Theodore A. Kennedy, Phaedra E. Budy
2015, Ecological Applications (25) 2168-2179
Rainbow and brown trout have been intentionally introduced into tailwaters downriver of dams globally and provide billions of dollars in economic benefits. At the same time, recruitment and maximum length of trout populations in tailwaters often fluctuate erratically, which negatively affects the value of fisheries. Large recruitment events may...
The Red Atrapa Sismos (Quake Catcher Network in Mexico): assessing performance during large and damaging earthquakes.
Luis A. Dominguez, Battalgazi Yildirim, Allen L. Husker, Elizabeth S. Cochran, Carl Christensen, Victor M. Cruz-Atienza
2015, Seismological Research Letters (86) 848-855
The Quake‐Catcher Network (QCN) is an expanding seismic array made possible by thousands of participants who volunteered time and resources from their computers to record seismic data using low‐cost accelerometers (http://qcn.stanford.edu/; last accessed December 2014). Sensors based on Micro‐Electromechanical Systems (MEMS) technology have rapidly improved over the last few...
Hydroclimatic conditions preceding the March 2014 Oso landslide
Brian Henn, Qian Cao, Dennis P. Lettenmaier, Christopher S. Magirl, Clifford Mass, J. Brent Bower, Michael St. Laurent, Yixin Mao, Sanja Perica
2015, Journal of Hydrometeorology (16) 1243-1249
The 22 March 2014 Oso landslide was one of the deadliest in U.S. history, resulting in 43 fatalities and the destruction of more than 40 structures. We examine synoptic conditions, precipitation records and soil moisture reconstructions in the days, months, and years preceding the landslide. Atmospheric reanalysis shows a period...
Proposed best modeling practices for assessing the effects of ecosystem restoration on fish
Kenneth A Rose, Shaye Sable, Donald L. DeAngelis, Simeon Yurek, Joel C. Trexler, William L. Graf, Denise J. Reed
2015, Ecological Modelling (300) 12-29
Large-scale aquatic ecosystem restoration is increasing and is often controversial because of the economic costs involved, with the focus of the controversies gravitating to the modeling of fish responses. We present a scheme for best practices in selecting, implementing, interpreting, and reporting of fish modeling designed to assess the effects...
Large fractions of CO2-fixing microorganisms in pristine limestone aquifers appear to be involved in the oxidation of reduced sulfur and nitrogen compounds
Martina Herrmann, Anna Rusznyak, Denise M. Akob, Isabel Schulze, Sebastian Opitz, Kai Uwe Totsche, Kirsten Küsel
2015, Applied and Environmental Microbiology (81) 2384-2394
The traditional view of the dependency of subsurface environments on surface-derived allochthonous carbon inputs is challenged by increasing evidence for the role of lithoautotrophy in aquifer carbon flow. We linked information on autotrophy (Calvin-Benson-Bassham cycle) with that from total microbial community analysis in groundwater at two superimposed—upper and lower—limestone groundwater...
Carbon flow from volcanic CO2 into soil microbial communities of a wetland mofette
Felix Beulig, Verena B. Heuer, Denise M. Akob, Bernhard Viehweger, Marcus Elvert, Martina Herrmann, Kai-Uwe Hinrichs, Kirsten Küsel
2015, The ISME Journal (9) 746-759
Effects of extremely high carbon dioxide (CO2) concentrations on soil microbial communities and associated processes are largely unknown. We studied a wetland area affected by spots of subcrustal CO2 degassing (mofettes) with focus on anaerobic autotrophic methanogenesis and acetogenesis because the pore gas phase was largely hypoxic. Compared with a reference...
Behavioral responses of freshwater mussels to experimental dewatering
Heather S. Galbraith, Carrie J. Blakeslee, William A. Lellis
2015, Freshwater Science (34) 42-52
Understanding the effects of flow alteration on freshwater ecosystems is critical for predicting species responses and restoring appropriate flow regimes. We experimentally evaluated the effects of 3 dewatering rates on behavior of 6 freshwater mussel species in the context of water-removal rates observed in 21 Atlantic Coast rivers. Horizontal movement...
EverVIEW: a visualization platform for hydrologic and Earth science gridded data
Stephanie S. Romañach, Mark McKelvy, Kevin J. Suir, Craig Conzelmann
2015, Computers & Geosciences (76) 88-95
The EverVIEW Data Viewer is a cross-platform desktop application that combines and builds upon multiple open source libraries to help users to explore spatially-explicit gridded data stored in Network Common Data Form (NetCDF). Datasets are displayed across multiple side-by-side geographic or tabular displays, showing colorized overlays on an Earth globe...
Turbidity, light, temperature, and hydropeaking control primary productivity in the Colorado River, Grand Canyon
Robert O. Hall Jr., Charles B. Yackulic, Theodore A. Kennedy, Michael D. Yard, Emma J. Rosi-Marshall, Nicholas Voichick, Kathrine E. Behn
2015, Limnology and Oceanography (60) 512-516
Dams and river regulation greatly alter the downstream environment for gross primary production (GPP) because of changes in water clarity, flow, and temperature regimes. We estimated reach-scale GPP in five locations of the regulated Colorado River in Grand Canyon using an open channel model of dissolved oxygen. Benthic GPP dominates...
Modeling risk of pneumonia epizootics in bighorn sheep
Sarah N. Sells, Michael S. Mitchell, J. Joshua Nowak, Paul M. Lukacs, Neil J. Anderson, Jennifer M. Ramsey, Justin A. Gude, Paul R. Krausman
2015, Journal of Wildlife Management (79) 195-210
Pneumonia epizootics are a major challenge for management of bighorn sheep (Ovis canadensis) affecting persistence of herds, satisfaction of stakeholders, and allocations of resources by management agencies. Risk factors associated with the disease are poorly understood, making pneumonia epizootics hard to predict; such epizootics are thus managed reactively rather than...
The importance of scaling for detecting community patterns: success and failure in assemblages of introduced species
Craig R. Allen, David G. Angeler, Michael P. Moulton, Crawford S. Holling
2015, Diversity (7) 229-241
Community saturation can help to explain why biological invasions fail. However, previous research has documented inconsistent relationships between failed invasions (i.e., an invasive species colonizes but goes extinct) and the number of species present in the invaded community. We use data from bird communities of the Hawaiian island of Oahu,...
Mechanisms of nutrient retention and its relation to flow connectivity in river-floodplain corridors
Laurel Larsen, Judson Harvey, Morgan M. Maglio
2015, Freshwater Science (34) 187-205
Understanding heterogeneity or patchiness in the distribution of vegetation and retention of C and nutrients in river corridors is critical for setting priorities for river management and restoration. Several mechanisms of spatial differentiation in nutrient retention in river and floodplain corridors have been recognized, but few studies have distinguished their...
Quantitative attribution of major driving forces on soil organic carbon dynamics
Yiping Wu, Shuguang Liu, Zhengxi Tan
2015, Journal of Advances in Modeling Earth Systems (7) 21-34
Soil organic carbon (SOC) storage plays a major role in the global carbon cycle and is affected by many factors including land use/management changes (e.g., biofuel production-oriented changes). However, the contributions of various factors to SOC changes are not well understood and quantified. This study was designed to investigate the...
