Comparison of macroinvertebrate-derived stream quality metrics between snag and riffle habitats
K.F. Stepenuck, R.L. Crunkilton, Michael A. Bozek, L. Wang
2008, Journal of the American Water Resources Association (44) 670-678
We compared benthic macroinvertebrate assemblage structure at snag and riffle habitats in 43 Wisconsin streams across a range of watershed urbanization using a variety of stream quality metrics. Discriminant analysis indicated that dominant taxa at riffles and snags differed; Hydropsychid caddisflies (Hydropsyche betteni and Cheumatopsyche spp.) and elmid beetles (Optioservus...
Geology of Hawaii reefs
Charles H. Fletcher, Christopher Bochicchio, Christopher L. Conger, Mary S. Engels, Eden J. Feirstein, Neil Frazer, Craig R. Glenn, Richard W. Grigg, Eric E. Grossman, Jodi N. Harney, Ebitari Isoun, Colin V. Murray-Wallace, John J. Rooney, Kenneth H. Rubin, Clark Sherman, Sean Vitousek
2008, Book chapter, Coral reefs of the USA
The Hawaii hot spot lies in the mantle under, or just to the south of, the Big Island of Hawaii. Two active subaerial volcanoes and one active submarine volcano reveal its productivity. Centrally located on the Pacific Plate, the hot spot is the source of the Hawaii Island Archipelago...
Growth, condition, diet, and consumption rates of northern pike in three Arizona reservoirs
J.M. Flinders, Scott A. Bonar
2008, Lake and Reservoir Management (24) 99-111
Northern pike (Esox lucius L.) introductions are controversial in the western United States due to suspected impacts they might have on established sport fisheries and potential illegal introductions. Tbree Arizona reservoirs, Parker Canyon Lake, Upper Lake Mary and Long Lake were sampled to examine the diet, consumption dynamics, and growth...
A simulation/optimization model for groundwater resources management in the Afram Plains area, Ghana
S.M. Yidana
2008, Journal of Environmental Hydrology (16) 1-14
A groundwater flow simulation model was developed using available hydrogeo logical data to A groundwater flow simulation model was developed using available hydrogeological data to describe groundwater flow in the Afram Plains area. A nonlinear optimization model was then developed and solved for the management of groundwater resources to meet...
Upper conduit structure and explosion dynamics at Stromboli
Bernard A. Chouet, Phillip B. Dawson, Marcello Martini
Sonia Calvari, Salvatore Inguaggiato, Giuseppe Puglisi, Maurizio Ripepe, Mauro Rosi, editor(s)
2008, Book chapter, The Stromboli volcano: An integrated study of the 2002-2003 eruption
Modeling of very long period seismic data recorded during explosive activity at Stromboli in 1997 provides an image of the uppermost 1 km of its volcanic plumbing system. Two distinct dike-like conduit structures are identified, each representative of explosive eruptions from two different vents located near the northern and southern...
Timing and patterns of basin infilling as documented in Lake Powell during a drought
Lincoln F. Pratson, John Hughes-Clarke, Mark Anderson, Thomas Gerber, David C. Twitchell, Ronald Ferrari, Charles A. Nittrouer, Jonathan D. Beaudoin, Jesse Granet, John Crockett
2008, Geology (36) 843-846
Between 1999 and 2005, drought in the western United States led to a >44 m fall in the level of Lake Powell (Arizona-Utah), the nation's second-largest reservoir. River discharges to the reservoir were halved, yet the rivers still incised the tops of deltas left exposed along the rim of the...
A Key to the Pupal Exuviae of the Midges (Diptera: Chironomidae) of Everglades National Park, Florida
Robert E. Jacobsen
2008, Scientific Investigations Report 2008-5082
A key has been developed for identifying the pupal exuviae of 132 taxa of chironomid midges collected in Everglades National Park, as well as 18 additional species from freshwater habitats adjacent to the Park. Descriptions and illustrations are based upon voucher specimens from extensive collections of chironomid pupal exuviae for...
Global change and biological soil crusts: Effects of ultraviolet augmentation under altered precipitation regimes and nitrogen additions
J. Belnap, S. L. Phillips, S. Flint, J. Money, M. Caldwell
2008, Global Change Biology (14) 670-686
Biological soil crusts (BSCs), a consortium of cyanobacteria, lichens, and mosses, are essential in most dryland ecosystems. As these organisms are relatively immobile and occur on the soil surface, they are exposed to high levels of ultraviolet (UV) radiation and atmospheric nitrogen (N) deposition, rising temperatures, and alterations in precipitation...
Den-site characteristics of black bears in Rocky Mountain National Park, Colorado
R.A. Baldwin, Louis C. Bender
2008, Journal of Wildlife Management (72) 1717-1724
We compared historic (1985-1992) and contemporary (2003-2006) black bear (Ursus americanus) den locations in Rocky Mountain National Park (RMNP), Colorado, USA, for habitat and physiographic attributes of den sites and used maximum entropy modeling to determine which factors were most influential in predicting den-site locations. We observed variability in the...
Chemical weathering of a marine terrace chronosequence, Santa Cruz, California I: Interpreting rates and controls based on soil concentration-depth profiles
A. F. White, M. S. Schulz, D.V. Vivit, A.E. Blum, David A. Stonestrom, S.P. Anderson
2008, Geochimica et Cosmochimica Acta (72) 36-68
The spatial and temporal changes in element and mineral concentrations in regolith profiles in a chronosequence developed on marine terraces along coastal California are interpreted in terms of chemical weathering rates and processes. In regoliths up to 15 m deep and 226 kyrs old, quartz-normalized mass transfer coefficients indicate non-stoichiometric...
Comparison of blood aminotransferase methods for assessment of myopathy and hepatopathy in Florida manatees (Trichechus manatus latirostris)
K.E. Harr, K. Allison, R. K. Bonde, D. Murphy, J. W. Harvey
2008, Journal of Zoo and Wildlife Medicine (39) 180-187
Muscle injury is common in Florida manatees (Trichechus manatus latirostris). Plasma aspartate amino-transferase (AST) is frequently used to assess muscular damage in capture myopathy and traumatic injury. Therefore, accurate measurement of AST and alanine aminotransferase (ALT) is important in managed, free-ranging animals, as well as in those rehabilitating from injury....
Development and evaluation of geochemical methods for the sourcing of archaeological maize
L. V. Benson, Howard E. Taylor, K.A. Peterson, B.D. Shattuck, C.A. Ramotnik, J.R. Stein
2008, Journal of Archaeological Science (35) 912-921
Strontium (Sr)-isotope values on bone from deer mice pairs from 12 field sites in the Chaco Canyon area, New Mexico, were compared with isotope values of synthetic soil waters from the same fields. The data indicate that mice obtain Sr from near-surface sources and that soil samples collected at depths...
Exploration maturity key to ranking search areas
Emil D. Attanasi, Philip A. Freeman
2008, Oil & Gas Journal (106)
The study area of US Geological Survey Circular 1288, the world outside the US and Canada, was partitioned into 44 countries and country groups. Map figures such as Fig. 2 and graphs similar to Figs. 3 and 4 provide a visual summary of maturity of oil and gas exploration. From...
Chemical contaminants, health indicators, and reproductive biomarker responses in fish from rivers in the Southeastern United States
J.E. Hinck, V. S. Blazer, N. D. Denslow, K. R. Echols, R.W. Gale, C. Wieser, T.W. May, M. Ellersieck, J.J. Coyle, D. E. Tillitt
2008, Science of the Total Environment (390) 538-557
Largemouth bass (Micropterus salmoides) and common carp (Cyprinus carpio) were collected from 13 sites located in the Mobile (MRB), Apalachicola–Flint–Chattahoochee (ARB), Savannah (SRB), and Pee Dee (PRB) River Basins to document spatial trends in accumulative chemical contaminants, health indicators, and reproductive biomarkers. Organochlorine residues,...
Rapid growth of a Eurasian haplotype of Phragmites australis in a restored brackish marsh in Louisiana, USA
Rebecca J. Howard, Steven E. Travis, Benjamin A. Sikes
2008, Biological Invasions (10) 369-379
While numerous studies have documented patterns of invasion by non-indigenous plant species, few have considered the invasive properties of non-native genotypes of native species. Characteristics associated with specific genotypes, such as tolerance to disturbance, may mistakenly be applied to an entire species in the absence of genetic information, which consequently...
Variations in pesticide leaching related to land use, pesticide properties, and unsaturated zone thickness
R.M.T. Webb, M.E. Wieczorek, B. T. Nolan, T.C. Hancock, Mark W. Sandstrom, J.E. Barbash, E.R. Bayless, R. W. Healy, J. Linard
2008, Journal of Environmental Quality (37) 1145-1157
Pesticide leaching through variably thick soils beneath agricultural fields in Morgan Creek, Maryland was simulated for water years 1995 to 2004 using LEACHM (Leaching Estimation and Chemistry Model). Fifteen individual models were constructed to simulate five depths and three crop rotations with associated pesticide applications. Unsaturated zone thickness averaged 4.7...
Late Cretaceous to Miocene sea-level estimates from the New Jersey and Delaware coastal plain coreholes: An error analysis
M.A. Kominz, J.V. Browning, K.G. Miller, P. J. Sugarman, S. Mizintseva, C.R. Scotese
2008, Basin Research (20) 211-226
Sea level has been estimated for the last 108 million years through backstripping of corehole data from the New Jersey and Delaware Coastal Plains. Inherent errors due to this method of calculating sea level are discussed, including uncertainties in ages, depth of deposition and the model used for tectonic subsidence....
Restoring piscivorous fish populations in the Laurentian Great Lakes causes seabird dietary change
C.E. Hebert, D.V.C. Weseloh, A. Idrissi, M.T. Arts, R. O'Gorman, O. T. Gorman, B. Locke, C.P. Madenjian, E.F. Roseman
2008, Ecology (89) 891-897
Ecosystem change often affects the structure of aquatic communities thereby regulating how much and by what pathways energy and critical nutrients flow through food webs. The availability of energy and essential nutrients to top predators such as seabirds that rely on resources near the water's surface will be affected by...
High-resolution foraminiferal, isotopic, and trace element records from holocene estuarine deposits of San Francisco Bay, California
M. McGann
2008, Conference Paper, Journal of Coastal Research
A 3.5-m gravity core (DJ6-93SF-6) from San Francisco Bay reveals a complex paleoclimatic history of the region over the last 3870 cal YBP. A polynomial equation based on 11 AMS 14C ages provides an excellent age model for the core, and environmental proxies for water temperature and salinity are derived...
Families of miocene monterey crude oil, seep, and tarball samples, coastal California
K. E. Peters, F. D. Hostettler, T.D. Lorenson, R.J. Rosenbauer
2008, American Association of Petroleum Geologists Bulletin (92) 1131-1152
Biomarker and stable carbon isotope ratios were used to infer the age, lithology, organic matter input, and depositional environment of the source rocks for 388 samples of produced crude oil, seep oil, and tarballs to better assess their origins and distributions in coastal California. These samples were used to construct...
Chemical and mineralogical characteristics of French green clays used for healing
Lynda B. Williams, Shelley E. Haydel, Rossman F. Giese, Dennis D. Eberl
2008, Clays and Clay Minerals (56) 437-452
The worldwide emergence of infectious diseases, together with the increasing incidence of antibiotic-resistant bacteria, elevate the need to properly detect, prevent, and effectively treat these infections. The overuse and misuse of common antibiotics in recent decades stimulates the need to identify new inhibitory agents. Therefore, natural products like clays, that...
Building model analysis applications with the Joint Universal Parameter IdenTification and Evaluation of Reliability (JUPITER) API
E. R. Banta, M. C. Hill, E. Poeter, J.E. Doherty, J. Babendreier
2008, Computers & Geosciences (34) 310-319
The open-source, public domain JUPITER (Joint Universal Parameter IdenTification and Evaluation of Reliability) API (Application Programming Interface) provides conventions and Fortran-90 modules to develop applications (computer programs) for analyzing process models. The input and output conventions allow application users to access various applications and the analysis methods they embody with...
Occurrence of volatile organic compounds in aquifers of the United States
Janet M. Carter, W.W. Lapham, J.S. Zogorski
2008, Journal of the American Water Resources Association (44) 399-416
Samples of ambient ground water were collected during 1985-2002 from 3,498 wells in 98 aquifer studies throughout the United States. None of the sampled wells were selected because of prior knowledge of nearby contamination. Most of these samples were analyzed for 55 volatile organic compounds (VOCs) to characterize their national...
New Orleans and Hurricane Katrina. IV: Orleans East Bank (Metro) protected basin
R.B. Seed, R.G. Bea, A. Athanasopoulos-Zekkos, G.P. Boutwell, J.D. Bray, C. Cheung, D. Cobos-Roa, J. Cohen-Waeber, B.D. Collins, L.F. Harder Jr., R. E. Kayen, J.M. Pestana, M.F. Riemer, J.D. Rogers, R. Storesund, X. Vera-Grunauer, Joseph Wartman
2008, Journal of Geotechnical and Geoenvironmental Engineering (134) 762-779
This paper addresses damage caused by Hurricane Katrina to the main Orleans East Bank protected basin. This basin represented the heart of New Orleans, and contained the main downtown area, the historic French Quarter, the Garden District, and the sprawling Lakefront and Canal Districts. Nearly half of the loss of...
Isolation and characterization of microsatellite loci from the Arctic cisco (Coregonus autumnalis)
Andrew M. Ramey, S.L. Graziano, J.L. Nielsen
2008, Molecular Ecology Resources (8) 357-359
Eight polymorphic microsatellite loci were isolated and characterized for the Arctic cisco, Coregonus autumnalis. Loci were evaluated in 21 samples from the Colville River subsistence fishery. The number of alleles per locus ranged from two to 18. Observed heterozygosity of loci varied from 0.10 to 1.00, and expected heterozygosity ranged...
