Occurrence of organic wastewater and other contaminants in cave streams in northeastern Oklahoma and northwestern Arkansas
Joseph R. Bidwell, Carol Becker, S. Hensley, R. Stark, Michael T. Meyer
2010, Archives of Environmental Contamination and Toxicology (58) 286-298
The prevalence of organic wastewater compounds in surface waters of the United States has been reported in a number of recent studies. In karstic areas, surface contaminants might be transported to groundwater and, ultimately, cave ecosystems, where they might impact resident biota. In this study, polar organic chemical integrative samplers...
Nest and chick survival and colony-site dynamics of least terns in the U.S. Virgin Islands
Claudia D. Lombard, Jaime Collazo, Douglas B. McNair
2010, The Condor (112) 56-64
We report nest and chick survival and colony-site dynamics of the Least Tern (Sternula antillarum). These results are the first for the Caribbean and were derived with likelihood-based approaches from 4640 nests and 44 chicks fitted with transmitters monitored in 52 colonies at St. Croix, U.S. Virgin Islands, 2003–2006. Managed...
Bacteria holding times for fecal coliform by mFC agar method and total coliform and Escherichia coli by Colilert®-18 Quanti-Tray® method
Brent T. Aulenbach
2010, Environmental Monitoring and Assessment (161) 147-159
Bacteria holding-time experiments of up to 62 h were performed on five surface-water samples from four urban stream sites in the vicinity of Atlanta, GA, USA that had relatively high densities of coliform bacteria (Escherichia coli densities were all well above the US Environmental Protection Agency criterion of 126 colonies...
Population synchrony of a native fish across three Laurentian Great Lakes: Evaluating the effects of dispersal and climate
D.B. Bunnell, J.V. Adams, O. T. Gorman, C.P. Madenjian, S.C. Riley, E.F. Roseman, J.S. Schaeffer
2010, Oecologia (162) 641-651
Climate and dispersal are the two most commonly cited mechanisms to explain spatial synchrony among time series of animal populations, and climate is typically most important for fishes. Using data from 1978-2006, we quantified the spatial synchrony in recruitment and population catch-per-unit-effort (CPUE) for bloater (Coregonus hoyi) populations across lakes...
Osmium isotope and highly siderophile element systematics of the lunar crust
J.M.D. Day, R.J. Walker, O.B. James, I.S. Puchtel
2010, Earth and Planetary Science Letters (289) 595-605
Coupled 187Os/188Os and highly siderophile element (HSE: Os, Ir, Ru, Pt, Pd, and Re) abundance data are reported for pristine lunar crustal rocks 60025, 62255, 65315 (ferroan anorthosites, FAN) and 76535, 78235, 77215 and a norite clast in 15455 (magnesian-suite rocks, MGS). Osmium isotopes permit more refined discrimination than previously...
Seismicity and fluid geochemistry at Lassen Volcanic National Park, California: Evidence for two circulation cells in the hydrothermal system
Cathy J. Janik, Marcia K. McLaren
2010, Journal of Volcanology and Geothermal Research (189) 257-277
Seismic analysis and geochemical interpretations provide evidence that two separate hydrothermal cells circulate within the greater Lassen hydrothermal system. One cell originates south to SW of Lassen Peak and within the Brokeoff Volcano depression where it forms a reservoir of hot fluid (235–270°C) that boils to feed steam to the...
Inverted channel deposits on the floor of Miyamoto crater, Mars
Horton E. Newsom, Nina L. Lanza, Ann M. Ollila, Sandra M. Wiseman, Ted L. Roush, Giuseppe A. Marzo, Livio L. Tornabene, Chris H. Okubo, Mikki M. Osterloo, Victoria E. Hamilton, Larry S. Crumpler
2010, Icarus (205) 64-72
Morphological features on the western floor of Miyamoto crater in southwestern Meridiani Planum, Mars, are suggestive of past fluvial activity. Imagery from the High Resolution Imaging Science Experiment (HiRISE) gives a detailed view of raised curvilinear features that appear to represent inverted paleochannel deposits. The inverted terrain appears to be...
Subspecies status and population genetic structure in Piping Plover (Charadrius melodus)
M.P. Miller, S. M. Haig, C. L. Gratto-Trevor, T.D. Mullins
2010, The Auk (127) 57-71
Piping Plover (Charadrius melodus) is a migratory shorebird that is listed as endangered in Canada and the U.S. Great Lakes and as threatened throughout the rest of its breeding and winter range. We undertook a comprehensive molecular-genetic investigation to (1) address subspecific taxonomy, (2) characterize population genetic structure, and (3)...
Chronic wasting disease (CWD) susceptibility of several North American rodents that are sympatric with cervid CWD epidemics
D.M. Heisey, N.A. Mickelsen, J.R. Schneider, C.J. Johnson, J.A. Langenberg, P.N. Bochsler, D.P. Keane, D.J. Barr
2010, Journal of Virology (84) 210-215
Chronic wasting disease (CWD) is a highly contagious always fatal neurodegenerative disease that is currently known to naturally infect only species of the deer family, Cervidae. CWD epidemics are occurring in free-ranging cervids at several locations in North America, and other wildlife species are certainly being exposed to infectious material....
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...
Milankovitch-scale correlations between deeply buried microbial populations and biogenic ooze lithology
I.W. Aiello, B.A. Bekins
2010, Geology (38) 79-82
The recent discoveries of large, active populations of microbes in the subseafloor of the world's oceans supports the impact of the deep biosphere biota on global biogeochemical cycles and raises important questions concerning the functioning of these extreme environments for life. These investigations demonstrated that subseafloor microbes are unevenly distributed...
Erosion and vegetation restoration impacts on ecosystem carbon dynamics in South China
X. Tang, Shuguang Liu, G. Zhou
2010, Soil Science Society of America Journal (74) 272-281
To quantify the consequences of erosion and vegetation restoration on ecosystem C dynamics (a key element in understanding the terrestrial C cycle), field measurements were collected since 1959 at two experimental sites set up on highly disturbed barren land in South China. One site had received...
Impacts of precipitation seasonality and ecosystem types on evapotranspiration in the Yukon River Basin, Alaska
W. Yuan, S. Liu, H. Liu, J. T. Randerson, G. Yu, L.L. Tieszen
2010, Water Resources Research (46) 1-16
Evapotranspiration (ET) is the largest component of water loss from terrestrial ecosystems; however, large uncertainties exist when estimating the temporal and spatial variations of ET because of concurrent shifts in the magnitude and seasonal distribution of precipitation as well as differences in the response of ecosystem ET to environmental variabilities....
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...
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...
Calculation of weighted averages approach for the estimation of ping tolerance values
S. Silalom, J.L. Carter, P. Chantaramongkol
2010, Chiang Mai Journal of Science (37) 151-159
A biotic index was created and proposed as a tool to assess water quality in the Upper Mae Ping sub-watersheds. The Ping biotic index was calculated by utilizing Ping tolerance values. This paper presents the calculation of Ping tolerance values of the collected macroinvertebrates. Ping tolerance values were estimated by...
Are there optimal densities for prairie birds?
S. K. Skagen, A.A.Y. Adams
2010, Condor (112) 8-14
The major forces of food and predation shape fitness-enhancing decisions of birds at all stages of their life cycles. During the breeding season, birds can minimize nest loss due to predation by selecting sites with a lower probability of predation. To understand the environmental and social aspects and consequences of...
Response of benthic macroinvertebrate communities to highway construction in an Appalachian watershed
Lara B. Hedrick, S.A. Welsh, James T. Anderson, L.-S. Lin, Y. Chen, X. Wei
2010, Hydrobiologia (641) 115-131
Highway construction in mountainous areas can result in sedimentation of streams, negatively impacting stream habitat, water quality, and biotic communities. We assessed the impacts of construction of a segment of Corridor H, a four-lane highway, in the Lost River watershed, West Virginia, by monitoring benthic macroinvertebrate communities and water quality,...
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...
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...
Patterns of mercury dispersion from local and regional emission sources, rural Central Wisconsin, USA
A. Kolker, M.L. Olson, David P. Krabbenhoft, Michael T. Tate, Mark A. Engle
2010, Atmospheric Chemistry and Physics Discussions (10) 1823-1846
Simultaneous real-time changes in mercury (Hg) speciation-reactive gaseous Hg (RGM), elemental Hg (Hg??), and fine particulate Hg (Hg-PM2.5), were determined from June to November 2007, in ambient air at three locations in rural Central Wisconsin. Known Hg emission sources within the airshed of the monitoring sites include: 1) a 1114...
Trail Pheromone Disruption of Argentine Ant Trail Formation and Foraging
D.M. Suckling, R.W. Peck, L.D. Stringer, K. Snook, P.C. Banko
2010, Journal of Chemical Ecology (36) 122-128
Trail pheromone disruption of invasive ants is a novel tactic that builds on the development of pheromone-based pest management in other insects. Argentine ant trail pheromone, (Z)-9-hexadecenal, was formulated as a micro-encapsulated sprayable particle and applied against Argentine ant populations in 400 m2 field plots in Hawai'i Volcanoes National Park....
Eolian transport of geogenic hexavalent chromium to ground water
W.W. Wood, D. Clark, J. L. Imes, T.B. Councell
2010, Ground Water (48) 19-29
A conceptual model of eolian transport is proposed to address the widely distributed, high concentrations of hexavalent chromium (Cr+6) observed in ground water in the Emirate of Abu Dhabi, United Arab Emirates. Concentrations (30 to more than 1000 μg/L Cr+6) extend over thousands of square kilometers of ground water systems....
Effects of lipid extraction on stable isotope ratios in avian egg yolk: Is arithmetic correction a reliable alternative?
S. Oppel, R.N. Federer, D. M. O’Brien, A.N. Powell, Tuula E. Hollmén
2010, The Auk (127) 72-78
Many studies of nutrient allocation to egg production in birds use stable isotope ratios of egg yolk to identify the origin of nutrients. Dry egg yolk contains >50% lipids, which are known to be depleted in 13C. Currently, researchers remove lipids from egg yolk using a chemical lipid-extraction procedure before...
Soil carbon flux following pulse precipitation events in the shortgrass steppe
S.M. Munson, T.J. Benton, W.K. Lauenroth, I.C. Burke
2010, Ecological Research (25) 205-211
Pulses of water availability characterize semiarid and arid ecosystems. Most precipitation events in these ecosystems are small (???10 mm), but can stimulate carbon flux. The large proportion of carbon stored belowground and small carbon inputs create the potential for these small precipitation events to have large effects on carbon cycling....
