Multi-species patterns of avian cholera mortality in Nebraska's rainwater basin
Julie A. Blanchong, M.D. Samuel, G. Mack
2006, Journal of Wildlife Diseases (42) 81-91
Nebraska's Rainwater Basin (RWB) is a key spring migration area for millions of waterfowl and other avian species. Avian cholera has been endemic in the RWB since the 1970s and in some years tens of thousands of waterfowl have died from the disease. We evaluated patterns of avian cholera mortality...
Biodiversity management of fens and fen meadows by grazing, cutting and burning
B.A. Middleton, B. Holsten, R. Van Diggelen
2006, Conference Paper, Applied Vegetation Science
Question: Can the biodiversity of fens in Europe and North America be maintained through the use of grazing (especially cattle grazing), fire, and/or cutting? Location: European and North American fens. Methods: This paper is a review of the literature on the effects of grazing, fire and cutting on fens, to...
Evaluation of kinetic uncertainty in numerical models of petroleum generation
K. E. Peters, C.C. Walters, P.J. Mankiewicz
2006, American Association of Petroleum Geologists Bulletin (90) 387-403
Oil-prone marine petroleum source rocks contain type I or type II kerogen having Rock-Eval pyrolysis hydrogen indices greater than 600 or 300-600 mg hydrocarbon/g total organic carbon (HI, mg HC/g TOC), respectively. Samples from 29 marine source rocks worldwide that contain mainly type II kerogen (HI = 230-786 mg HC/g...
A shock-induced polymorph of anatase and rutile from the Chesapeake Bay impact structure, Virginia, U.S.A
J.C. Jackson, J. Wright Horton Jr., I.-M. Chou, H. E. Belkin
2006, American Mineralogist (91) 604-608
A shock-induced polymorph (TiO2II) of anatase and rutile has been identified in breccias from the late Eocene Chesapeake Bay impact structure. The breccia samples are from a recent, partially cored test hole in the central uplift at Cape Charles, Virginia. The drill cores from 744 to 823 m depth consist...
The transition from explosive to effusive eruptive regime: The example of the 1912 Novarupta eruption, Alaska
N.K. Adams, Bruce F. Houghton, S.A. Fagents, W. Hildreth
2006, Geological Society of America Bulletin (118) 620-634
The shift from explosive to effusive silicic volcanism seen in many historical eruptions reflects a change in the style of degassing of erupted magma. This paper focuses on such a transition during the largest eruption of the twentieth century, the 1912 eruption of Novarupta. The transition is recorded in a...
From wetlands to wet spots: Environmental tracking and the fate of carboniferous elements in early permian tropical fl oras
William A. DiMichele, N.J. Tabor, D.S. Chaney, W.J. Nelson
2006, Special Paper of the Geological Society of America 223-248
Diverse wetland vegetation flourished at the margins of the Midland Basin in north-central Texas during the Pennsylvanian Period. Extensive coastal swamps and an ever-wet, tropical climate supported lush growth of pteridosperm, marattialean fern, lycopsid, and calamite trees, and a wide array of ground cover and vines. As the Pennsylvanian passed...
State summaries: Indiana
K.R. Shaffer
2006, Mining Engineering (58) 90-92
In 2005, the Indiana industrial minerals industry generated $789 million, a record high for the state and an increase of 2.2% from 2004. Among all states, Indiana ranked 24th. Mineral commodities produced in the state included crushed limestone and dolomite, construction sand and gravel, industrial sand, dimension limestone, dimension sandstone,...
Relation of fish communities to environmental conditions in urban streams of the Wasatch Front, Utah
E.M. Giddings, L. R. Brown, T.M. Short, M. R. Meador
2006, Western North American Naturalist (66) 155-168
Twenty-eight sites along the Wasatch Front, north central Utah, representing the range ot urban land use intensity for wadeable streams of the area, were sampled in September 2000. Fish communities were assessed by single-pass electrofishing, and physical habitat and water-quality characteristics were measured. On average, nonnative species comprised 54% of...
Association between perfluorinated compounds and pathological conditions in southern sea otters
K. Kannan, E. Perrotta, N. J. Thomas
2006, Environmental Science & Technology (40) 4943-4948
Concentrations of four perfluorinated contaminants, including perfluorooctanesulfonate (PFOS) and perfluorooctanoic acid (PFOA), were measured in liver tissue from 80 adult female sea otters collected from the California coast during 1992a??2002. Concentrations of PFOS and PFOA were in the ranges of <1a??884 and <5a??147 ng/g, wet wt, respectively. Concentrations of PFOA...
Isoeugenol concentrations in rainbow trout (Oncorhynchus mykiss) skin-on fillet tissue after exposure to AQUI-S™ at different temperatures, durations, and concentrations
Jeffery R. Meinertz, Shari L. Greseth, Theresa M. Schreier, Jeffry A. Bernardy, William H. Gingerich
2006, Aquaculture (254) 347-354
AQUI-S™ is a fish anesthetic/sedative approved for use in several countries including Australia, Chile, and New Zealand and is being pursued for use in the United States. Legal use of AQUI-S™ as an anesthetic in U.S. fish culture depends on approval by the U.S. Food and Drug Administration (FDA)....
Variation in predation pressure as a mechanism underlying differences in numerical abundance between populations of the poeciliid fish Heterandria formosa
J.M.L. Richardson, M. S. Gunzburger, J. Travis
2006, Oecologia (147) 596-605
We explored whether a variation in predation and habitat complexity between conspecific populations can drive qualitatively different numerical dynamics in those populations. We considered two disjunct populations of the least killifish, Heterandria formosa, that exhibit long-term differences in density, top fish predator species, and dominant aquatic vegetation. Monthly censuses over...
Surface waves in the western Taiwan coastal plain from an aftershock of the 1999 Chi-Chi, Taiwan, earthquake
G.-Q. Wang, G.-Q. Tang, D.M. Boore, Burbach G. Van Ness G., C.R. Jackson, X.-Y. Zhou, Q.-L. Lin
2006, Bulletin of the Seismological Society of America (96) 821-845
Significant surface waves were recorded in the western coastal plain (WCP) of Taiwan during the 1999 Chi-Chi, Taiwan, earthquake and its series of aftershocks. We study in detail the surface waves produced by one aftershock (20 September 1999, 18hr 03m 41.16sec, M 6.2) in this paper. We take the Chelungpu-Chukou...
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...
Assessing the nutritional stress hypothesis: Relative influence of diet quantity and quality on seabird productivity
Patrick G.R. Jodice, Daniel D. Roby, K.R. Turco, Robert M. Suryan, David B. Irons, John F. Piatt, Michael T. Shultz, David G. Roseneau, Arthur B. Kettle, Jill A. Anthony
2006, Marine Ecology Progress Series (325) 267-279
Food availability comprises a complex interaction of factors that integrates abundance, taxonomic composition, accessibility, and quality of the prey base. The relationship between food availability and reproductive performance can be assessed via the nutritional stress (NSH) and junk-food (JFH) hypotheses. With respect to reproductive success, NSH posits that a deficiency...
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...
Oink if you love coal
E. R. Landa
2006, Geotimes (51) 60
No abstract available....
Disease emergence and resurgence—the wildlife-human connection
Milton Friend, James W. Hurley, Pauline Nol, Katherine E. Wesenberg
2006, Circular 1285
In 2000, the Global Outbreak Alert and Response Network (GOARN) was organized as a global disease watchdog group to coordinate disease outbreak information and health crisis response. The World Health Organization (WHO) is the headquarters for this network. Understandably, the primary focus for WHO is human health. However, diseases such...
Variability and regulation of denitrification in an Upper Mississippi River backwater
E.A. Strauss, W. B. Richardson, J.C. Cavanaugh, L.A. Bartsch, Rebecca M. Kreiling, A.J. Standorf
2006, Journal of the North American Benthological Society (25) 596-606
Sediments in the backwaters of the Upper Mississippi River (UMR) are highly organic and provide an optimal environment for N removal. We monitored an 8.6-ha UMR backwater site near La Crosse, Wisconsin, for nearly 3 y to assess temporal variability, seasonal trends, and the factors regulating denitrification. We measured rates...
Modelling and understanding volcanic processes using high-quality seismological data
Bernard A. Chouet
2006, Géosciences (2006) 56-63
At an active volcano, Very-Long-Period (VLP) seismicity (with typical periods in the range 2-100 s) reflects pressure fluctuations resulting from unsteady mass transport in the sub-surface plumbing system, and hence provides a glimpse of the internal dynamics of the volcanic edifice. Understanding the fundamental fluid-flow mechanisms involved in the...
National Institute of Invasive Species Science (NIISS)
Tom Stohlgren
2006, Fact Sheet 2006-3036
The National Institute of Invasive Species Science (www.NIISS.org) is a consortium of governmental and nongovernmental partners, led by the U.S. Geological Survey (USGS), whose aim is to provide reliable information and advanced decision support tools for documenting, understanding, predicting, assessing, and addressing the threat of invasive species in the United...
Temporal evolution of carbon budgets of the Appalachian forests in the U.S. from 1972 to 2000
J. Liu, S. Liu, Thomas R. Loveland
2006, Forest Ecology and Management (222) 191-201
Estimating dynamic terrestrial ecosystem carbon (C) sources and sinks over large areas is difficult. The scaling of C sources and sinks from the field level to the regional level has been challenging due to the variations of climate, soil, vegetation, and disturbances. As part of an effort to estimate the...
Minding the gap: Frequency of indels in mtDNA control region sequence data and influence on population genetic analyses
John M. Pearce
2006, Molecular Ecology (15) 333-341
Insertions and deletions (indels) result in sequences of various lengths when homologous gene regions are compared among individuals or species. Although indels are typically phylogenetically informative, occurrence and incorporation of these characters as gaps in intraspecific population genetic data sets are rarely discussed. Moreover, the impact of gaps on estimates...
Mineralogy and arsenic mobility in arsenic-rich Brazilian soils and sediments
de Mello, William R. Roy, J.L. Talbott, J.W. Stucki
2006, Journal of Soils and Sediments (6) 9-19
Background. Soils and sediments in certain mining regions of Brazil contain an unusually large amount of arsenic (As), which raises concerns that mining could promote increased As mobility, and thereby increase the risks of contaminating water supplies. Objectives. The purpose of t his study was to identify the most important...
Ponderosa pine snag densities following multiple fires in the Gila Wilderness, New Mexico
Z.A. Holden, P. Morgan, M.G. Rollins, R.G. Wright
2006, Forest Ecology and Management (221) 140-146
Fires create and consume snags (standing dead trees), an important structural and ecological component of ponderosa pine forests. The effects of repeated fires on snag densities in ponderosa pine forests of the southwestern USA have not been studied. Line intercept sampling was used to estimate snag densities in areas of...
Linking landscape characteristics to mineral site use by band-tailed pigeons in Western Oregon: Coarse-filter conservation with fine-filter tuning
C.T. Overton, R.A. Schmitz, Michael L. Casazza
2006, Natural Areas Journal (26) 38-46
Mineral sites are scarce resources of high ion concentration used heavily by the Pacific Coast subpopulation of band-tailed pigeons. Over 20% of all known mineral sites used by band-tailed pigeons in western Oregon, including all hot springs, have been abandoned. Prior investigations have not analyzed stand or landscape level habitat...
