Chronic toxicity of erythromycin thiocyanate to Daphnia magna in a flow-through, continuous exposure test system
J.R. Meinertz, Theresa M. Schreier, J.A. Bernardy
2011, Bulletin of Environmental Contamination and Toxicology (87) 621-625
Approval of a new animal drug application for AQUAMYCIN 100® (erythromycin thiocyanate; ET) to treat freshwater salmonid species with bacterial kidney disease is being pursued in the US. As part of the approval process, ET’s impact on an aquatic environment had to be described in an environmental assessment. The environmental assessment...
Estimating basin scale evapotranspiration (ET) by water balance and remote sensing methods
G.B. Senay, S. Leake, P.L. Nagler, G. Artan, J. Dickinson, J.T. Cordova, E. P. Glenn
2011, Hydrological Processes (25) 4037-4049
Evapotranspiration (ET) is an important hydrological process that can be studied and estimated at multiple spatial scales ranging from a leaf to a river basin. We present a review of methods in estimating basin scale ET and its applications in understanding basin water balance dynamics. The review focuses on two...
The influence of fine-scale habitat features on regional variation in population performance of alpine White-tailed Ptarmigan
B. Fedy, K. Martin
2011, Condor (113) 306-315
It is often assumed (explicitly or implicitly) that animals select habitat features to maximize fitness. However, there is often a mismatch between preferred habitats and indices of individual and population measures of performance. We examined the influence of fine-scale habitat selection on the overall population performance of the White-tailed Ptarmigan...
Latitudinal variation in reproductive strategies by the migratory Louisiana Waterthrush
B.J. Mattsson, S.C. Latta, R.J. Cooper, R.S. Mulvihill
2011, Condor (113) 412-418
We evaluated hypotheses that seek to explain breeding strategies of the Louisiana Waterthrush (Parkesia motacilla) that vary across a latitudinal gradient. On the basis of data from 418 nests of color-banded individuals in southwestern Pennsylvania and 700 km south in the Georgia Piedmont, we found that clutch size in replacement...
Monitoring soil geochemistry in the urban environment: A comparison of studies in 1972 and 2005 in Denver, Colorado
David B. Smith, Karl J. Ellefsen, Ronald G. Garrett, L. Graham Closs
2011, Book
No abstract available...
Evaluation of sewage source and fate on southeast Florida coastal reefs
Futch J. Carrie, Dale W. Griffin, K. Banks, E.K. Lipp
2011, Marine Pollution Bulletin (62) 2308-2316
Water, sponge and coral samples were collected from stations impacted by a variety of pollution sources and screened for human enteric viruses as conservative markers for human sewage. While human enteroviruses and adenoviruses were not detected, noroviruses (NoV; human genogroups I and II) were detected in 31% of samples (especially...
Evaluating cost-efficiency and accuracy of hunter harvest survey designs
P.M. Lukacs, J.A. Gude, R.E. Russell, B.B. Ackerman
2011, Wildlife Society Bulletin (35) 430-437
Effective management of harvested wildlife often requires accurate estimates of the number of animals harvested annually by hunters. A variety of techniques exist to obtain harvest data, such as hunter surveys, check stations, mandatory reporting requirements, and voluntary reporting of harvest. Agencies responsible for managing harvested wildlife such as deer...
Simulating sterilization, vaccination, and test-and-remove as brucellosis control measures in bison
M. Ebinger, Paul C. Cross, Rick Wallen, P.J. White, John Treanor
2011, Ecological Applications (21) 2944-2959
Brucella abortus, the causative agent of bovine brucellosis, infects wildlife, cattle, and humans worldwide, but management of the disease is often hindered by the logistics of controlling its prevalence in wildlife reservoirs. We used an individually based epidemiological model to assess the relative efficacies of three management interventions (sterilization, vaccination,...
From agricultural intensification to conservation: Sediment transport in the Raccoon River, Iowa, 1916-2009
C.S. Jones, K. E. Schilling
2011, Journal of Environmental Quality (40) 1911-1923
Fluvial sediment is a ubiquitous pollutant that negatively aff ects surface water quality and municipal water supply treatment. As part of its routine water supply monitoring, the Des Moines Water Works (DMWW) has been measuring turbidity daily in the Raccoon River since 1916. For this study, we calibrated daily turbidity...
The Sculptured Hills of the Taurus Highlands: Implications for the relative age of Serenitatis, basin chronologies and the cratering history of the Moon
P. D. Spudis, D.E. Wilhelms, M.S. Robinson
2011, Journal of Geophysical Research E: Planets (116)
New images from the Lunar Reconnaissance Orbiter Camera show the distribution and geological relations of the Sculptured Hills, a geological unit widespread in the highlands between the Serenitatis and Crisium basins. The Sculptured Hills shows knobby, undulating, radially textured, and plains-like morphologies and in many places is indistinguishable from the...
Historical perspective on seismic hazard to Hispaniola and the northeast Caribbean region
Uri S. ten Brink, W. H. Bakun, C.H. Flores
2011, Journal of Geophysical Research B: Solid Earth (116)
We evaluate the long-term seismic activity of the North-American/Caribbean plate boundary from 500 years of historical earthquake damage reports. The 2010 Haiti earthquakes and other earthquakes were used to derive regional attenuation relationships between earthquake intensity, magnitude, and distance from the reported damage to the epicenter, for Hispaniola and for...
Hydrothermal hexahydrite spherules erupted during the 2008-2010 summit eruption of Kīlauea Volcano, Hawai`i'
Ken Hon, Tim R. Orr
2011, Bulletin of Volcanology (73) 1369-1375
Small (1-3 mm), hollow spherules of hexahydrite have been collected falling out of the magmatic gas plume downwind of Kīlauea’s summit vent. The spherules were observed on eight separate occasions during 2009-2010 when a lake of actively spattering lava was present ~150-200 m below the rim of the vent. The...
Methods of InSAR atmosphere correction for volcano activity monitoring
W. Gong, F. Meyer, P.W. Webley, Z. Lu
2011, Conference Paper, International Geoscience and Remote Sensing Symposium (IGARSS)
When a Synthetic Aperture Radar (SAR) signal propagates through the atmosphere on its path to and from the sensor, it is inevitably affected by atmospheric effects. In particular, the applicability and accuracy of Interferometric SAR (InSAR) techniques for volcano monitoring is limited by atmospheric path delays. Therefore, atmospheric correction of...
Quantifying the influence of sea ice on ocean microseism using observations from the Bering Sea, Alaska
V.C. Tsai, D.E. McNamara
2011, Geophysical Research Letters (38)
Microseism is potentially affected by all processes that alter ocean wave heights. Because strong sea ice prevents large ocean waves from forming, sea ice can therefore significantly affect microseism amplitudes. Here we show that this link between sea ice and microseism is not only a robust one but can be...
Earth observing data and methods for advancing water harvesting technologies in the semi-arid rain-fed environments of India
C. Sharma, P. Thenkabail, R. R. Sharma
2011, Conference Paper, Proceedings - 2011 IEEE Global Humanitarian Technology Conference, GHTC 2011
The paper develops approaches and methods of modeling and mapping land and water productivity of rain-fed crops in semi-arid environments of India using hyperspectral, hyperspatial, and advanced multispectral remote sensing data and linking the same to field-plot data and climate station data. The overarching goal is to provide information to...
Rapid assessment of rice seed availability for wildlife in harvested fields
B.J. Halstead, M. R. Miller, Michael L. Casazza, P.S. Coates, M.A. Farinha, K. Benjamin Gustafson, J.L. Yee, J. P. Fleskes
2011, Wildlife Society Bulletin (35) 377-393
Rice seed remaining in commercial fields after harvest (waste rice) is a critical food resource for wintering waterfowl in rice-growing regions of North America. Accurate and precise estimates of the seed mass density of waste rice are essential for planning waterfowl wintering habitat extents and management. In the Sacramento Valley...
Informal trail monitoring protocols: Denali National Park and Preserve. Final Report, October 2011
Jeffrey L. Marion, Jeremy F. Wimpey
2011, Report
Managers at Alaska?s Denali National Park and Preserve (DENA) sponsored this research to assess and monitor visitor-created informal trails (ITs). DENA is located in south-central Alaska and managed as a six million acre wilderness park. This program of research was guided by the following objectives: (1) Investigate alternative methods for...
Water and heat transport in boreal soils: Implications for soil response to climate change
Z. Fan, J. C. Neff, J.W. Harden, T. Zhang, H. Veldhuis, C.I. Czimczik, G.C. Winston, J. A. O'Donnell
2011, Science of the Total Environment (409) 1836-1842
Soil water content strongly affects permafrost dynamics by changing the soil thermal properties. However, the movement of liquid water, which plays an important role in the heat transport of temperate soils, has been under-represented in boreal studies. Two different heat transport models with and without convective heat transport were compared...
A predator-prey model with a holling type I functional response including a predator mutual interference
G. Seo, D.L. DeAngelis
2011, Journal of Nonlinear Science (21) 811-833
The most widely used functional response in describing predator-prey relationships is the Holling type II functional response, where per capita predation is a smooth, increasing, and saturating function of prey density. Beddington and DeAngelis modified the Holling type II response to include interference of predators that increases with predator density....
Modeling hydrologic and geomorphic hazards across post-fire landscapes using a self-organizing map approach
Michael J. Friedel
2011, Environmental Modelling and Software (26) 1660-1674
Few studies attempt to model the range of possible post-fire hydrologic and geomorphic hazards because of the sparseness of data and the coupled, nonlinear, spatial, and temporal relationships among landscape variables. In this study, a type of unsupervised artificial neural network, called a self-organized map (SOM), is trained using data...
Modeling routes of chronic wasting disease transmission: Environmental prion persistence promotes deer population decline and extinction
Emily S. Almberg, Paul C. Cross, Christopher J. Johnson, Dennis M. Heisey, Bryan J. Richards
2011, PLoS ONE (6)
Chronic wasting disease (CWD) is a fatal disease of deer, elk, and moose transmitted through direct, animal-to-animal contact, and indirectly, via environmental contamination. Considerable attention has been paid to modeling direct transmission, but despite the fact that CWD prions can remain infectious in the environment for years, relatively little information...
Self-potential investigations of a gravel bar in a restored river corridor
N. Linde, J. Doetsch, D. Jougnot, O. Genoni, Y. Durst, B. J. Minsley, T. Vogt, N. Pasquale, J. Luster
2011, Hydrology and Earth System Sciences (15) 729-742
Self-potentials (SP) are sensitive to water fluxes and concentration gradients in both saturated and unsaturated geological media, but quantitative interpretations of SP field data may often be hindered by the superposition of different source contributions and time-varying electrode potentials. Self-potential mapping and close to two months of SP monitoring on...
Scattered P'P' waves observed at short distances
Paul S. Earle, Sebastian Rost, Peter M. Shearer, Christine Thomas
2011, Bulletin of the Seismological Society of America (101) 2843-2854
We detect previously unreported 1 Hz scattered waves at epicentral distances between 30° and 50° and at times between 2300 and 2450 s after the earthquake origin. These waves likely result from off-azimuth scattering of PKPbc to PKPbc in the upper mantle and crust and provide a new tool for...
Nest success of snowy plovers (Charadrius nivosus) in the Southern high plains of Texas
S.T. Saalfeld, Warren C. Conway, D.A. Haukos, W.P. Johnson
2011, Waterbirds (34) 389-399
Snowy Plovers (Charadrius nivosus) nesting on edges of saline lakes within the Southern High Plains (SHP) of Texas are threatened by habitat degradation due to reduced artesian spring flow, making many saline lakes unsuitable for nesting and migrating shorebirds. Factors influencing nest success were evaluated, current nest success estimates in...
New insights from well responses to fluctuations in barometric pressure
J.J. Butler, W. Jin, G.A. Mohammed, E.C. Reboulet
2011, Ground Water (49) 525-533
Hydrologists have long recognized that changes in barometric pressure can produce changes in water levels in wells. The barometric response function (BRF) has proven to be an effective means to characterize this relationship; we show here how it can also be utilized to glean valuable insights into semi-confined aquifer systems....
