Hierarchical multi-scale classification of nearshore aquatic habitats of the Great Lakes: Western Lake Erie
J.E. McKenna, C. Castiglione
2010, Journal of Great Lakes Research (36) 757-771
Classification is a valuable conservation tool for examining natural resource status and problems and is being developed for coastal aquatic habitats. We present an objective, multi-scale hydrospatial framework for nearshore areas of the Great Lakes. The hydrospatial framework consists of spatial units at eight hierarchical scales from the North American...
Spatial distribution of pingos in Northern Asia
G. Grosse, Benjamin M. Jones
2010, Cryosphere Discussions (4) 1781-1837
Pingos are prominent periglacial landforms in vast regions of the Arctic and Subarctic. They are indicators of modern and past conditions of permafrost, surface geology, hydrology and climate. A first version of a detailed spatial geodatabase of more than 6000 pingo locations in a 3.5 ?? 106 km2 region of...
Can selection on nest size from nest predation explain the latitudinal gradient in clutch size?
L. Biancucci, T. E. Martin
2010, Journal of Animal Ecology (79) 1086-1092
1. Latitudinal variation in clutch sizes of birds is a well described, but poorly understood pattern. Many hypotheses have been proposed, but few have been experimentally tested, and none have been universally accepted by researchers. 2. The nest size hypothesis posits that higher nest predation in the tropics favours selection...
East-west genetic differentiation in Musk Ducks (Biziura lobata) of Australia suggests late Pleistocene divergence at the Nullarbor Plain
P.-J. Guay, R.T. Chesser, R.A. Mulder, A. D. Afton, D.C. Paton, K. G. McCracken
2010, Conservation Genetics (11) 2105-2120
Musk Ducks (Biziura lobata) are endemic to Australia and occur as two geographically isolated populations separated by the Nullarbor Plain, a vast arid region in southern Australia. We studied genetic variation in Musk Duck populations at coarse (eastern versus western Australia) and fine scales (four sites within eastern Australia). We...
Characterization of recombinant Raccoonpox Vaccine Vectors in Chickens
S.-H. Hwa, Keith P. Iams, Jeffrey S. Hall, B.A. Kingstad, Jorge E. Osorio
2010, Avian Diseases (54) 1157-1165
Raccoonpox virus (RCN) has been used as a recombinant vector against several mammalian pathogens but has not been tested in birds. The replication of RCN in chick embryo fibroblasts (CEFs) and chickens was studied with the use of highly pathogenic avian influenza virus H5N1 hemagglutinin (HA) as a model antigen...
Controls of suspended sediment concentration, nutrient content, and transport in a subtropical wetland
G.B. Noe, J. W. Harvey, R.W. Schaffranek, L. G. Larsen
2010, Wetlands (30) 39-54
Redistribution of largely organic sediment from low elevation sloughs to higher elevation ridges is a leading hypothesis for the formation and maintenance of the native ridge and slough landscape pattern found in peat wetlands of the Florida Everglades. We tested this redistribution hypothesis by measuring the concentration and characteristics of...
Mineralogy and the release of trace elements from slag from the Hegeler Zinc smelter, Illinois (USA)
Nadine M. Piatak, Robert R. Seal II
2010, Applied Geochemistry (25) 302-320
Slag from the former Hegeler Zn-smelting facility in Illinois (USA) is mainly composed of spinifex Ca-rich plagioclase, fine-grained dendritic or coarse-grained subhedral to anhedral clinopyroxenes, euhedral to subhedral spinels, spherical blebs of Fe sulfides, silicate glass, and less commonly fayalitic olivine. Mullite and quartz were also identified in one sample...
Strong nonlinear photonic responses from microbiologically synthesized tellurium nanocomposites
K.-S. Liao, Jingyuan Wang, S. Dias, J. Dewald, N.J. Alley, Shaun Baesman, Ronald S. Oremland, W.J. Blau, S.A. Curran
2010, Chemical Physics Letters (484) 242-246
A new class of nanomaterials, namely microbiologically-formed nanorods composed of elemental tellurium [Te(0)] that forms unusual nanocomposites when combined with poly(m-phenylenevinylene-co-2,5-dioctoxy-phenylenevinylene) (PmPV) is described. These bio-nanocomposites exhibit excellent broadband optical limiting at 532 and 1064 nm. Nonlinear scattering, originating from the laser induced solvent bubbles and microplasmas, is responsible for...
Normalized velocity profiles of field-measured turbidity currents
Jingping Xu
2010, Geology (38) 563-566
Multiple turbidity currents were recorded in two submarine canyons with maximum speed as high as 280 cm/s. For each individual turbidity current measured at a fixed station, its depth-averaged velocity typically decreased over time while its thickness increased. Some turbidity currents gained in speed as they traveled downcanyon, suggesting a...
Environmental controls on drainage behavior of an ephemeral stream
K.W. Blasch, T.P.A. Ferre, J.A. Vrugt
2010, Stochastic Environmental Research and Risk Assessment (24) 1077-1087
Streambed drainage was measured at the cessation of 26 ephemeral streamflow events in Rillito Creek, Tucson, Arizona from August 2000 to June 2002 using buried time domain reflectometry (TDR) probes. An unusual drainage response was identified, which was characterized by sharp drainage from saturation to near field capacity at each...
The architecture of the Cassini division
M.M. Hedman, P. D. Nicholson, K. H. Baines, B. J. Buratti, Christophe Sotin, R. N. Clark, R. H. Brown, R.G. French, E.A. Marouf
2010, Astronomical Journal (139) 228-251
The Cassini Division in Saturn's rings contains a series of eight named gaps, three of which contain dense ringlets. Observations of stellar occultations by the Visual and Infrared Mapping Spectrometer onboard the Cassini spacecraft have yielded 40 accurate and precise measurements of the radial position of the edges of all...
Using the Sonoran and Libyan Desert test sites to monitor the temporal stability of reflective solar bands for Landsat 7 enhanced thematic mapper plus and Terra moderate resolution imaging spectroradiometer sensors
Amit Angal, Xiaoxiong Xiong, Tae-young Choi, Gyanesh Chander, Aisheng Wu
2010, Journal of Applied Remote Sensing (4)
Remote sensing imagery is effective for monitoring environmental and climatic changes because of the extent of the global coverage and long time scale of the observations. Radiometric calibration of remote sensing sensors is essential for quantitative & qualitative science and applications. Pseudo-invariant ground targets have been extensively used to monitor...
A new look at photometry of the Moon
J.D. Goguen, T.C. Stone, H. H. Kieffer, B. J. Buratti
2010, Icarus (208) 548-557
We use ROLO photometry (Kieffer, H.H., Stone, T.C. [2005]. Astron. J. 129, 2887-2901) to characterize the before and after full Moon radiance variation for a typical highlands site and a typical mare site. Focusing on the phase angle range 45??. <. ??<. 50??, we test two different physical models, macroscopic...
Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: STATSGO Soil Characteristics
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 491-26
This tabular data set represents estimated soil variables compiled for every MRB_E2RF1 catchment of selected Major River Basins (MRBs, Crawford and others, 2006). The variables included are cation exchange capacity, percent calcium carbonate, slope, water-table depth, soil thickness, hydrologic soil group, soil erodibility (k-factor), permeability, average water capacity, bulk density,...
Perfluorinated compounds and polybrominated diphenyl ethers in great blue heron eggs from three colonies on the Mississippi River, Minnesota
Thomas W. Custer, Kurunthachalam Kannan, Lin Tao, Hun Yun, Annette Trowbridge
2010, Waterbirds (33) 86-95
Archived Great Blue Heron (Ardea herodias) eggs (N = 16) collected in 1993 from three colonies on the Mississippi River in Minnesota were analyzed in 2007 for perfluorinated compounds (PFCs) and polybrominated diphenyl ethers (PBDEs). One of the three colonies, Pig's Eye, was located near a presumed source of PFCs....
Small mammals associated with colonies of black-tailed prairie dogs (Cynomys ludovicianus) in the Southern High Plains
A.L. Pruett, C. W. Boal, M.C. Wallace, Heather A. Whitlaw, J.D. Ray
2010, Southwestern Naturalist (55) 50-56
We compared diversity and abundance of small mammals at colonies of black-tailed prairie dogs (Cynomys ludovicianus) and paired non-colony sites. Of colonies of black-tailed prairie dogs in our study area, >80 were on slopes of playa lakes; thus, we used sites of colonies and non-colonies that were on slopes of...
Establishing the Antarctic Dome C community reference standard site towards consistent measurements from Earth observation satellites
C. Cao, S. Uprety, J. Xiong, A. Wu, P. Jing, D. Smith, G. Chander, N. Fox, S. Ungar
2010, Canadian Journal of Remote Sensing (36) 498-513
Establishing satellite measurement consistency by using common desert sites has become increasingly more important not only for climate change detection but also for quantitative retrievals of geophysical variables in satellite applications. Using the Antarctic Dome C site (75°06′S, 123°21′E, elevation 3.2 km) for satellite radiometric calibration and validation (Cal/Val) is...
Pollutant fate and spatio-temporal variability in the choptank river estuary: Factors influencing water quality
D. Whitall, W.D. Hively, A.K. Leight, C.J. Hapeman, L.L. McConnell, T. Fisher, C.P. Rice, E. Codling, G.W. McCarty, A.M. Sadeghi, A. Gustafson, K. Bialek
2010, Science of the Total Environment (408) 2096-2108
Restoration of the Chesapeake Bay, the largest estuary in the United States, is a national priority. Documentation of progress of this restoration effort is needed. A study was conducted to examine water quality in the Choptank River estuary, a tributary of the Chesapeake Bay that since 1998 has been classified...
Mortality of centrarchid fishes in the Potomac drainage: Survey results and overview of potential contributing factors
Vicki Blazer, Luke R. Iwanowicz, Clifford E. Starliper, Steven D. Zaugg, Mark R. Burkhardt, P. Barbash, J.D. Hedrick, S.J. Reeser, J.E. Mullican, J. Kelble
2010, Journal of Aquatic Animal Health (22) 190-218
Skin lesions and spring mortality events of smallmouth bass Micropterus dolomieu and selected other species were first noted in the South Branch of the Potomac River in 2002. Since that year morbidity and mortality have also been observed in the Shenandoah and Monocacy rivers. Despite much research, no single pathogen,...
A review of the genus Agapetus Curtis (Trichoptera: Glossosomatidae) in eastern and central North America, with description of 12 new species
David A. Etnier, Charles R. Parker, John T. Baxter Jr., Todd M. Long
2010, Insecta Mundi (149)
Twenty-nine species of caddisflies in the genus Agapetus Curtis in eastern and central North America are reviewed. Twelve are described as new species: Agapetus aphallus (known only from females); Agapetus baueri, Agapetus flinti, Agapetus harrisi, Agapetus hesperus, Agapetus ibis, Agapetus kirchneri, Agapetus meridionalis, Agapetus pegram, Agapetus ruiteri, Agapetus stylifer, and...
Regional seismic stratigraphy and controls on the Quaternary evolution of the Cape Hatteras region of the Atlantic passive margin, USA
D. J. Mallinson, S.J. Culver, S.R. Riggs, E.R. Thieler, D. Foster, J. Wehmiller, K.M. Farrell, J. Pierson
2010, Marine Geology (268) 16-33
Seismic and core data, combined with amino acid racemization and strontium-isotope age data, enable the definition of the Quaternary stratigraphic framework and recognition of geologic controls on the development of the modern coastal system of North Carolina, U.S.A. Seven regionally continuous high amplitude reflections are defined which bound six seismic...
Sediment discharges during storm flow from proximal urban and rural karst springs, central Kentucky, USA
T.M. Reed, McFarland J. Todd, A.E. Fryar, A.W. Fogle, J.L. Taraba
2010, Journal of Hydrology (383) 280-290
Since the mid-1990s, various studies have addressed the timing of sediment transport to karst springs during storm flow or the composition and provenance of sediment discharged from springs. However, relatively few studies have focused on the flow thresholds at which sediment is mobilized or total sediment yields across various time...
Inter-regional comparison of land-use effects on stream metabolism
M. J. Bernot, D. J. Sobota, R.O. Hall, P. J. Mulholland, W. K. Dodds, J.R. Webster, J. L. Tank, L. R. Ashkenas, L. W. Cooper, Clifford N. Dahm, S.V. Gregory, N. B. Grimm, S. K. Hamilton, S. L. Johnson, W. H. McDowell, J.L. Meyer, B. Peterson, G. C. Poole, Valett H.M. Maurice, C. Arango, J. J. Beaulieu, A. J. Burgin, C. Crenshaw, A. M. Helton, L. Johnson, J. Merriam, B.R. Niederlehner, J. M. O’Brien, J. D. Potter, R.W. Sheibley, S. M. Thomas, K. Wilson
2010, Freshwater Biology (55) 1874-1890
1. Rates of whole-system metabolism (production and respiration) are fundamental indicators of ecosystem structure and function. Although first-order, proximal controls are well understood, assessments of the interactions between proximal controls and distal controls, such as land use and geographic region, are lacking. Thus, the influence of land use on stream...
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...
Preemption games: theory and experiment
Steven T. Anderson, Daniel Friedman, Ryan Oprea
2010, American Economic Review (100) 1778-1803
El Mutún, perhaps the world's largest remaining iron ore deposit, was opened to private investors in the 1980s but, due to the high cost of developing the remote Bolivian site, there were no takers for two decades. In late 2005, spurred by rising commodity prices, the Brazilian company EBX finally...
