A reexamination of age-related variation in body weight and morphometry of Maryland nutria
M. H. Sherfy, T.A. Mollett, K.R. McGowan, S.L. Daugherty
2006, Journal of Wildlife Management (70) 1132-1141
Age-related variation in morphometry has been documented for many species. Knowledge of growth patterns can be useful for modeling energetics, detecting physiological influences on populations, and predicting age. These benefits have shown value in understanding population dynamics of invasive species, particularly in developing efficient control and eradication programs. However, development...
Hazardous cracks running through Arizona
R. Harris, M.L. Allison
2006, Geotimes (51) 24-27
[No abstract available]...
Spatial use by wintering greater white-fronted geese relative to a decade of habitat change in California's Central Valley
Joshua T. Ackerman, John Y. Takekawa, D.L. Orthmeyer, J. P. Fleskes, J.L. Yee, K.L. Kruse
2006, Journal of Wildlife Management (70) 965-976
We investigated the effect of recent habitat changes in California's Central Valley on wintering Pacific greater white-fronted geese (Anser albifrons frontalis) by comparing roost-to-feed distances, distributions, population range sizes, and habitat use during 1987-1990 and 1998-2000. These habitat changes included wetland restoration and agricultural land enhancement due to the 1990...
Research approach to teaching groundwater biodegradation in karst aquifers
L. King, T. Byl, R. Painter
2006, Conference Paper, ASEE Annual Conference and Exposition, Conference Proceedings
TSU in partnership with the USGS has conducted extensive research regarding biode??gradation of contaminants in karst aquifers. This research resulted in the development of a numerical approach to modeling biodegradation of contaminants in karst aquifers that is taught to environmental engineering students in several steps. First, environmental engineering students are...
Should heterogeneity be the basis for conservation? Grassland bird response to fire and grazing
S.D. Fuhlendorf, W.C. Harrell, David M. Engle, R.G. Hamilton, C.A. Davis, David M. Leslie Jr.
2006, Ecological Applications (16) 1706-1716
In tallgrass prairie, disturbances such as grazing and fire can generate patchiness across the landscape, contributing to a shifting mosaic that presumably enhances biodiversity. Grassland birds evolved within the context of this shifting mosaic, with some species restricted to one or two patch types created under spatially and temporally distinct...
Determination of coalbed methane potential and gas adsorption capacity in Western Kentucky coals
S.M. Mardon, K.G. Takacs, J.C. Hower, C.F. Eble, Maria Mastalerz
2006, Conference Paper, 23rd Annual International Pittsburgh Coal Conference, PCC - Coal-Energy, Environment and Sustainable Development
The Illinois Basin has not been developed for Coalbed Methane (CBM) production. It is imperative to determine both gas content and other parameters for the Kentucky portion of the Illinois Basin if exploration is to progress and production is to occur in this area. This research is part of a...
Assessment of the usefulness of semipermeable membrane devices for long-term watershed monitoring in an urban slough system
K. McCarthy
2006, Environmental Monitoring and Assessment (118) 293-318
Semipermeable membrane devices (SPMDs) were deployed at eight sites within the Buffalo Slough, near Portland, Oregon, to (1) measure the spatial and seasonal distribution of dissolved polycyclic aromatic hydrocarbon (PAH) and organochlorine (OC) compounds in the slough, (2) assess the usefulness of SPMDs as a tool for investigating and monitoring...
Rupture models for the A.D. 900-930 Seattle fault earthquake from uplifted shorelines
Uri S. ten Brink, J. Song, R.C. Bucknam
2006, Geology (34) 585-588
A major earthquake on the Seattle fault, Washington, ca. A.D. 900-930 was first inferred from uplifted shorelines and tsunami deposits. Despite follow-up geophysical and geological investigations, the rupture parameters of the earthquake and the geometry of the fault are uncertain. Here we estimate the fault geometry, slip direction, and magnitude...
Mississippi delta mudflow activity and 2005 gulf hurricanes
J.P. Walsh, D.R. Corbett, D. Mallinson, M. Goni, M. Dail, C. Loewy, K. Marciniak, K. Ryan, C. Smith, A. Stevens, B. Summers, T. Test
2006, Eos, Transactions, American Geophysical Union (87) 477-479
[No abstract available]...
Foraging destinations and marine habitat use of short-tailed albatrosses: A multi-scale approach using first-passage time analysis
R.M. Suryan, F. Sato, G.R. Balogh, Hyrenbach K. David, P.R. Sievert, K. Ozaki
2006, Deep-Sea Research Part II: Topical Studies in Oceanography (53) 370-386
We used satellite telemetry, remotely sensed data (bathymetry, chlorophyll a (chl a), sea-surface temperature (SST), wind speed) and first-passage time (FPT) analysis to determine the distribution, movement patterns, and habitat associations of short-tailed albatrosses (Phoebastria albatrus) during the non-breeding season, 2002 and 2003. Satellite transmitters were deployed on birds immediately...
Incorporating diverse data and realistic complexity into demographic estimation procedures for sea otters
M. Timothy Tinker, Daniel F. Doak, James A. Estes, Brian B. Hatfield, Michelle M. Staedler, Arthur Gross
2006, Ecological Applications (16) 2293-2312
Reliable information on historical and current population dynamics is central to understanding patterns of growth and decline in animal populations. We developed a maximum likelihood-based analysis to estimate spatial and temporal trends in age/sex-specific survival rates for the threatened southern sea otter (Enhydra lutris nereis), using annual population censuses and...
Description of the adults of Maccaffertium lenati (Ephemeroptera: Heptageniidae), notes on its ecology and distribution, and a new North Carolina record for Isonychia arida (Ephemeroptera: Isonychiidae)
B.C. Kondratieff, R.E. Zuellig, D. R. Lenat
2006, Proceedings of the Entomological Society of Washington (108) 995-997
[No abstract available]...
The carbon balance of North American wetlands
S.D. Bridgham, J.P. Megonigal, J.K. Keller, N.B. Bliss, C. Trettin
2006, Wetlands (26) 889-916
We examine the carbon balance of North American wetlands by reviewing and synthesizing the published literature and soil databases. North American wetlands contain about 220 Pg C, most of which is in peat. They are a small to moderate carbon sink of about 49 Tg C yr-1, although the uncertainty...
Sedimentary deposits of the 26 December 2004 tsunami on the northwest coast of Aceh, Indonesia
A. Moore, Y. Nishimura, G. Gelfenbaum, T. Kamataki, R. Triyono
2006, Earth, Planets and Space (58) 253-258
The 2004 Sumatra-Andaman tsunami flooded coastal northern Sumatra to a depth of over 20 m, deposited a discontinuous sheet of sand up to 80 cm thick, and left mud up to 5 km inland. In most places the sand sheet is normally graded, and in some it contains complex internal...
Santa Barbara Basin study extends global climate record
C. Nicholson, J. Kennett, C. Sorlien, S. Hopkins, R. Behl, William Normark, R. Sliter, T. Hill, D. Pak, A. Schimmelmann, K. Cannariato
2006, Eos, Transactions, American Geophysical Union (87) 205-207
[No abstract available]...
State summaries: West Virginia
B.M. Blake, N. Fedorko, G.H. McColloch
2006, Mining Engineering (58) 122-125
West Virginia mines coal, limestone, sandstone, gravel, clay and other nonfuel materials. Limestone production figures for 2005 are not yet available but in 2004, limestone production accounted for 85.7% of noncoal production on a tonnage basis. In 2005, 327 coal mines reported production during the year. Underground mining accounted for...
Fabricating data: How substituting values for nondetects can ruin results, and what can be done about it
D.R. Helsel
2006, Chemosphere (65) 2434-2439
The most commonly used method in environmental chemistry to deal with values below detection limits is to substitute a fraction of the detection limit for each nondetect. Two decades of research has shown that this fabrication of values produces poor estimates of statistics, and commonly obscures patterns and trends in...
Cometary impact and amino acid survival - Chemical kinetics and thermochemistry
D.S. Ross
2006, Journal of Physical Chemistry A (110) 6633-6637
The Arrhenius parameters for the initiating reactions in butane thermolysis and the formation of soot, reliable to at least 3000 K, have been applied to the question of the survival of amino acids in cometary impacts on early Earth. The pressure/temperature/time course employed here was that developed in hydrocode simulations...
Interspecific resource partitioning in sympatric ursids
Jerrold L. Belant, Knut Kielland, Erich H. Follmann, Layne G. Adams
2006, Ecological Applications (16) 2333-2343
The fundamental niche of a species is rarely if ever realized because the presence of other species restricts it to a narrower range of ecological conditions. The effects of this narrower range of conditions define how resources are partitioned. Resource partitioning has been inferred but not demonstrated previously for sympatric...
Sediment distribution and transport across the continental shelf and slope under idealized wind forcing
S.A. Condie, C. R. Sherwood
2006, Progress in Oceanography (70) 255-270
Resuspension, transport, and deposition of sediments over the continental shelf and slope are complex processes and there is still a need to understand the underlying spatial and temporal dynamical scales. As a step towards this goal, a two-dimensional slice model (zero gradients in the alongshore direction) based on the primitive...
Photometric properties of Titan's surface from Cassini VIMS: Relevance to titan's hemispherical albedo dichotomy and surface stability
R.M. Nelson, R. H. Brown, B.W. Hapke, W. D. Smythe, L. Kamp, M.D. Boryta, F. Leader, K. H. Baines, G. Bellucci, J.-P. Bibring, B. J. Buratti, F. Capaccioni, P. Cerroni, R. N. Clark, M. Combes, A. Coradini, D. P. Cruikshank, P. Drossart, V. Formisano, R. Jaumann, Y. Langevin, D. L. Matson, T. B. McCord, V. Mennella, P. D. Nicholson, B. Sicardy, Christophe Sotin
2006, Planetary and Space Science (54) 1540-1551
The Visual and Infrared Mapping Spectrometer (VIMS) instrument on the Cassini Saturn Orbiter returned spectral imaging data as the spacecraft undertook six close encounters with Titan beginning 7 July, 2004. Three of these flybys each produced overlapping coverage of two distinct regions of Titan's surface. Twenty-four points were selected on...
Mortality and pathology in brown bullheads Amieurus nebulosus associated with a spontaneous Edwardsiella ictaluri outbreak under tank culture conditions
L. R. Iwanowicz, A.R. Griffin, Deborah D. Cartwright, V. S. Blazer
2006, Diseases of Aquatic Organisms (70) 219-225
Brown bullheads Amieurus nebulosus (family Ictaluridae) are commonly used as a sentinel of environmental contamination. These fish are not generally cultured under laboratory conditions and little is known about their disease susceptibility. Here we report an outbreak of disease due to Edwardsiella ictaluri in a laboratory population of tank-reared, wild-caught...
A static predictor of seismic demand on frames based on a post-elastic deflected shape
Y. Mori, T. Yamanaka, N. Luco, C.A. Cornell
2006, Earthquake Engineering and Structural Dynamics (35) 1295-1318
Predictors of seismic structural demands (such as inter-storey drift angles) that are less time-consuming than nonlinear dynamic analysis have proven useful for structural performance assessment and for design. Luco and Cornell previously proposed a simple predictor that extends the idea of modal superposition (of the first two modes) with the...
Airborne lidar sensing of massive stony coral colonies on patch reefs in the northern Florida reef tract
J. C. Brock, C. W. Wright, I. B. Kuffner, R. Hernandez, P. Thompson
2006, Remote Sensing of Environment (104) 31-42
In this study we examined the ability of the NASA Experimental Advanced Airborne Research Lidar (EAARL) to discriminate cluster zones of massive stony coral colonies on northern Florida reef tract (NFRT) patch reefs based on their topographic complexity (rugosity). Spatially dense EAARL laser submarine topographic soundings acquired in August 2002...
The chemical quality of self-supplied domestic well water in the United States
Michael J. Focazio, D. Tipton, Stephanie Dunkle Shapiro, Linda H. Geiger
2006, Ground Water Monitoring and Remediation (26) 92-104
Existing water quality data collected from domestic wells were summarized to develop the first national‐scale retrospective of self‐supplied drinking water sources. The contaminants evaluated represent a range of inorganic and organic compounds, and although the data set was not originally designed to be a statistical representation...
