Effects of egg order on organic and inorganic element concentrations and egg characteristics in tree swallows, tachycineta bicolor
Christine M. Custer, Brian R. Gray, Thomas W. Custer
2010, Environmental Toxicology and Chemistry (29) 909-921
The laying order of tree swallow eggs was identified from the Housatonic River, Berkshire County, Massachusetts, USA, and eggs were chemically analyzed individually to document possible effects of laying order on organic contaminant and inorganic element concentrations. Effects of laying order on other parameters such as egg weight, size, and...
Hydrodynamic modeling of juvenile mussel dispersal in a large river: The potential effects of bed shear stress and other parameters
J.A. Daraio, L.J. Weber, T.J. Newton
2010, Conference Paper, Journal of the North American Benthological Society
Because unionid mussels have a parasitic larval stage, they are able to disperse upstream and downstream as larvae while attached to their host fish and with flow as juveniles after excystment from the host. Understanding unionid population ecology requires knowledge of the processes that affect juvenile dispersal prior to establishment....
Effects of simulated moose Alces alces browsing on the morphology of rowan Sorbus aucuparia
N.R.D. Jager, J. Pastor
2010, Wildlife Biology (16) 301-307
In much of northern Sweden moose Alces alces browse rowan Sorbus aucuparia heavily and commonly revisit previously browsed plants. Repeated browsing of rowan by moose has created some concern for its long-term survival in heavily browsed areas. We therefore measured how four years of simulated moose browsing at four population...
Methane hydrate synthesis from ice: Influence of pressurization and ethanol on optimizing formation rates and hydrate yield
Po-Chun. Chen, Wuu-Liang Huang, Laura A. Stern
2010, Energy and Fuels (24) 2390-2403
Polycrystalline methane gas hydrate (MGH) was synthesized using an ice-seeding method to investigate the influence of pressurization and ethanol on the hydrate formation rate and gas yield of the resulting samples. When the reactor is pressurized with CH4 gas without external heating, methane hydrate can be formed from ice grains...
Calibration and use of continuous heat-type automated seepage meters for submarine groundwater discharge measurements
B.M. Mwashote, W. C. Burnett, J. Chanton, I.R. Santos, N. Dimova, P.W. Swarzenski
2010, Estuarine, Coastal and Shelf Science (87) 1-10
Submarine groundwater discharge (SGD) assessments were conducted both in the laboratory and at a field site in the northeastern Gulf of Mexico, using a continuous heat-type automated seepage meter (seepmeter). The functioning of the seepmeter is based on measurements of a temperature gradient in the water between downstream and upstream...
Community variations in social vulnerability to Cascadia-related tsunamis in the U.S. Pacific Northwest
N.J. Wood, C.G. Burton, S.L. Cutter
2010, Natural Hazards (52) 369-389
Tsunamis generated by Cascadia subduction zone earthquakes pose significant threats to coastal communities in the U. S. Pacific Northwest. Impacts of future tsunamis to individuals and communities will likely vary due to pre-event socioeconomic and demographic differences. In order to assess social vulnerability to Cascadia tsunamis, we adjust a social...
Yearling greater sage-grouse response to energy development in Wyoming
M.J. Holloran, R.C. Kaiser, W.A. Hubert
2010, Journal of Wildlife Management (74) 65-72
Sagebrush (Artemisia spp.)-dominated habitats in the western United States have experienced extensive, rapid changes due to development of natural-gas fields, resulting in localized declines of greater sage-grouse (Centrocercus urophasianus) populations. It is unclear whether population declines in natural-gas fields are caused by avoidance or demographic impacts, or the age classes...
Designing and implementing a regional urban modeling system using the SLEUTH cellular urban model
Claire A. Jantz, Scott J. Goetz, David I. Donato, Peter R. Claggett
2010, Computers, Environment and Urban Systems (34) 1-16
This paper presents a fine-scale (30 meter resolution) regional land cover modeling system, based on the SLEUTH cellular automata model, that was developed for a 257000 km2 area comprising the Chesapeake Bay drainage basin in the eastern United States. As part of this effort, we developed a new version of the SLEUTH...
Aeolian bedforms, yardangs, and indurated surfaces in the Tharsis Montes as seen by the HiRISE Camera: Evidence for dust aggregates
Nathan T. Bridges, Maria E. Banks, Ross A. Beyer, Frank C. Chuang, Eldar Z. Noe Dobrea, Kenneth E. Herkenhoff, Laszlo P. Keszthelyi, K.E. Fishbaugh, Alfred S. McEwen, Timothy I. Michaels, B.J. Thomson, James J. Wray
2010, Icarus (205) 165-182
HiRISE images of Mars with ground sampling down to 25 cm/pixel show that the dust-rich mantle covering the surfaces of the Tharsis Montes is organized into ridges whose form and distribution are consistent with formation by aeolian saltation. Other dusty areas near the volcanoes and elsewhere on the planet exhibit...
New and interesting species of the genus Muelleria (Bacillariophyta) from the Antarctic region and South Africa
B. Van De Vijver, G. Mataloni, L. Stanish, S. A. Spaulding
2010, Phycologia (49) 22-41
During a survey of the terrestrial diatom flora of some sub-Antarctic islands in the southern Indian and Atlantic Oceans and of the Antarctic continent, more than 15 taxa belonging to the genus Muelleria were observed. Nine of these taxa are described as new species using light and scanning electron microscopy....
Increase in lake trout reproduction in Lake Huron following the collapse of alewife: Relief from thiamine deficiency or larval predation?
J.D. Fitzsimons, S. Brown, L. Brown, D. Honeyfield, J. He, J.E. Johnson
2010, Aquatic Ecosystem Health & Management (13) 73-84
In the Great Lakes there is still uncertainty as to the population level effects of a thiamine deficiency on salmonines caused by high consumption of alewives Alosa pseudoharengus. A resurgence of lake trout Salvelinus namaycush reproduction in Lake Huron following the crash of alewife stocks between 2002 and 2004 provided...
In situ measurements of volatile aromatic hydrocarbon biodegradation rates in groundwater
I.M. Cozzarelli, B.A. Bekins, R.P. Eganhouse, E. Warren, H.I. Essaid
2010, Journal of Contaminant Hydrology (111) 48-64
Benzene and alkylbenzene biodegradation rates and patterns were measured using an in situ microcosm in a crude-oil contaminated aquifer near Bemidji, Minnesota. Benzene-D6, toluene, ethylbenzene, o-, m- and p-xylenes and four pairs of C3- and C4-benzenes were added to an in situ microcosm and studied over a 3-year period. The...
Headwater streams and forest management: does ecoregional context influence logging effects on benthic communities?
R. Bruce Medhurst, Mark S. Wipfli, Chris Binckley, Karl Polivka, Paul F. Hessburg, R. Brion Salter
2010, Hydrobiologia (641) 71-83
Effects of forest management on stream communities have been widely documented, but the role that climate plays in the disturbance outcomes is not understood. In order to determine whether the effect of disturbance from forest management on headwater stream communities varies by climate, we evaluated benthic macroinvertebrate communities in 24...
Propagule pressure and stream characteristics influence introgression: Cutthroat and rainbow trout in British Columbia
S.N. Bennett, J.R. Olson, J. L. Kershner, P. Corbett
2010, Ecological Applications (20) 263-277
Hybridization and introgression between introduced and native salmonids threaten the continued persistence of many inland cutthroat trout species. Environmental models have been developed to predict the spread of introgression, but few studies have assessed the role of propagule pressure. We used an extensive set of fish stocking records and geographic...
Post-construction monitoring of a Core-Loc™ breakwater using tripod-based LiDAR
Jessica H. Podoski, Gerald W. Bawden, Sandra Bond, Thomas D. Smith, James Foster
2010, Book chapter, Coasts, marine structures and breakwaters: Adapting to change
The goal of the technology application described herein is to determine whether breakwater monitoring data collected using Tripod (or Terrestrial) Light Detection and Ranging (T-LiDAR) can give insight into processes such as how Core-Loc™ concrete armour units nest following construction, and in turn how settlement affects armour layer stability, concrete...
Landscape effects on diets of two canids in Northwestern Texas: A multinomial modeling approach
P.R. Lemons, J.S. Sedinger, M.P. Herzog, P. S. Gipson, R.L. Gilliland
2010, Journal of Mammalogy (91) 66-78
Analyses of feces, stomach contents, and regurgitated pellets are common techniques for assessing diets of vertebrates and typically contain more than 1 food item per sampling unit. When analyzed, these individual food items have traditionally been treated as independent, which represents pseudoreplication. When food types are recorded as present or...
Nodeomics: Pathogen detection in vertebrate lymph nodes using meta-transcriptomics
Nicola E. Wittekindt, Abinash Padhi, Stephan C. Schuster, Ji Qi, Fangqing Zhao, Lynn P. Tomsho, Lindsay R. Kasson, Michael Packard, Paul C. Cross, Mary Poss
2010, PLoS (5) 1-10
The ongoing emergence of human infections originating from wildlife highlights the need for better knowledge of the microbial community in wildlife species where traditional diagnostic approaches are limited. Here we evaluate the microbial biota in healthy mule deer (Odocoileus hemionus) by analyses of lymph node meta-transcriptomes. cDNA libraries from five...
Evaluating the spatiotemporal variations of water budget across China over 1951-2006 using IBIS model
Q. Zhu, H. Jiang, J. Liu, X. Wei, C. Peng, X. Fang, S. Liu, G. Zhou, S. Yu, W. Ju
2010, Hydrological Processes (24) 429-445
The Integrated Biosphere Simulator is used to evaluate the spatial and temporal patterns of the crucial hydrological variables [run-off and actual evapotranspiration (AET)] of the water balance across China for the period 1951–2006 including a precipitation analysis. Results suggest three major findings. First, simulated run-off captured 85% of the spatial...
First Results of the Regional Earthquake Likelihood Models Experiment
D. Schorlemmer, J.D. Zechar, M.J. Werner, E. H. Field, D.D. Jackson, T.H. Jordan
2010, Pure and Applied Geophysics (167) 859-876
The ability to successfully predict the future behavior of a system is a strong indication that the system is well understood. Certainly many details of the earthquake system remain obscure, but several hypotheses related to earthquake occurrence and seismic hazard have been proffered, and predicting earthquake behavior is a worthy...
Potential economic benefits of adapting agricultural production systems to future climate change
Daniel B. Fagre, Gregory Pederson, Lindsey E. Bengtson, Tony Prato, Zeyuan Qui, Jimmie R. Williams
2010, Environmental Management (45) 577-589
Potential economic impacts of future climate change on crop enterprise net returns and annual net farm income (NFI) are evaluated for small and large representative farms in Flathead Valley in Northwest Montana. Crop enterprise net returns and NFI in an historical climate period (1960–2005) and future climate period (2006–2050) are...
Building on a legacy: 125 years of USGS topographic map
J. Campbell, M.R. Newell, D.A. Perdue
2010, Photogrammetric Engineering and Remote Sensing (76) 209-213
No abstract available....
Quality of the log-geometric distribution extrapolation for smaller undiscovered oil and gas pool size
L. Chenglin, Ronald R. Charpentier
2010, Natural Resources Research (19) 11-21
The U.S. Geological Survey procedure for the estimation of the general form of the parent distribution requires that the parameters of the log-geometric distribution be calculated and analyzed for the sensitivity of these parameters to different conditions. In this study, we derive the shape factor of a log-geometric distribution from...
Modern climate challenges and the geological record
Thomas M. Cronin
2010, American Paleontologist (18) 10-12
Today's changing climate poses challenges about the influence of human activity, such as greenhouse gas emissions and land use changes, the natural variability of Earth's climate, and complex feedback processes. Ice core and instrumental records show that over the last century, atmospheric carbon dioxide (CO2) concentrations have risen to 390...
A late Miocene-early Pliocene chain of lakes fed by the Colorado River: Evidence from Sr, C, and O isotopes of the Bouse Formation and related units between Grand Canyon and the Gulf of California
J. A. Roskowski, P. J. Patchett, J.E. Spencer, P. A. Pearthree, D. L. Dettman, J. E. Faulds, A. C. Reynolds
2010, Geological Society of America Bulletin (122) 1625-1636
We report strontium isotopic results for the late Miocene Hualapai Limestone of the Lake Mead area (Arizona-Nevada) and the latest Miocene to early Pliocene Bouse Formation and related units of the lower Colorado River trough (Arizona-California-Nevada), together with parallel oxygen and carbon isotopic analyses of Bouse samples, to constrain the...
Fine scale daily movements and habitat use of East Pacific green turtles at a shallow coastal lagoon in Baja California Sur, Mexico
Jesse Senko, Volker Koch, William M. Megill, Raymond R. Carthy, R.obert P. Templeton, Wallace J. Nichols
2010, Journal of Experimental Marine Biology and Ecology (391) 92-100
Green turtles spend most of their lives in coastal foraging areas where they face multiple anthropogenic impacts. Therefore, understanding their spatial use in this environment is a priority for conservation efforts. We studied the fine scale daily movements and habitat use of East Pacific green turtles (Chelonia mydas) at Laguna...
