Geologic controls on thermal maturity patterns in Pennsylvanian coal-bearing rocks in the Appalachian basin
Leslie F. Ruppert, James C. Hower, Robert T. Ryder, Jeffrey R. Levine, Michael H. Trippi, William C. Grady
2010, International Journal of Coal Geology (81) 169-181
Thermal maturation patterns of Pennsylvanian strata in the Appalachian basin were determined by compiling and contouring published and unpublished vitrinite reflectance (VR) measurements. VR isograd values range from 0.6% in eastern Ohio and eastern Kentucky (western side of the East Kentucky coal field) to greater than 5.5% in eastern Pennsylvania (Southern Anthracite field,...
Population trends in northern spotted owls: Associations with climate in the Pacific Northwest
E.M. Glenn, R.G. Anthony, E.D. Forsman
2010, Biological Conservation (143) 2543-2552
We used reverse time capture-mark-recapture models to describe associations between rate of population change (??) and climate for northern spotted owls (Strix occidentalis caurina) at six long-term study areas in Washington and Oregon, USA. Populations in three of six areas showed strong evidence of declining populations, while populations in two...
Sampling in ecology and evolution - bridging the gap between theory and practice
C.H. Albert, Nigel G. Yoccoz, T.C. Edwards, C.H. Graham, N.E. Zimmermann, W. Thuiller
2010, Ecography (33) 1028-1037
Sampling is a key issue for answering most ecological and evolutionary questions. The importance of developing a rigorous sampling design tailored to specific questions has already been discussed in the ecological and sampling literature and has provided useful tools and recommendations to sample and analyse ecological data. However, sampling issues...
Cyanotoxin mixtures and taste-and-odor compounds in cyanobacterial blooms from the midwestern united states
Jennifer L. Graham, Keith A. Loftin, Michael T. Meyer, Andrew C. Ziegler
2010, Environmental Science & Technology (44) 7361-7368
The mixtures of toxins and taste-and-odor compounds present during cyanobacterial blooms are not well characterized and of particular concern when evaluating potential human health risks. Cyanobacterial blooms were sampled in twenty-three Midwestern United States lakes and analyzed for community composition, thirteen cyanotoxins by liquid chromatography/mass spectrometry and immunoassay, and two...
Comparing forest fragmentation and its drivers in China and the USA with Globcover v2.2
Mingshi Chen, Lijun Mao, Chunguo Zhou, James E. Vogelmann, Zhiliang Zhu
2010, Journal of Environmental Management (91) 2572-2580
Forest loss and fragmentation are of major concern to the international community, in large part because they impact so many important environmental processes. The main objective of this study was to assess the differences in forest fragmentation patterns and drivers between China and the conterminous United States (USA). Using the...
Flexibility in nest-site choice and nesting success of Turdus rufiventris (Turdidae) in a montane forest in northwestern argentina
S.B. Lomascolo, A.C. Monmany, A. Malizia, T. E. Martin
2010, Wilson Journal of Ornithology (122) 674-680
We studied the consequences of nest-site choice on nesting success under differing disturbance levels for the Rufous-bellied Thrush (Turdus rufiventris). We compared nest-site choice and nest success between a disturbed site and an undisturbed site in a montane subtropical forest in northwestern Argentina. We found no overall difference in daily...
Response to nestling throat ligatures by three songbirds
G.L. Robinson, C.J. Conway, C. Kirkpatrick, D.D. Laroche
2010, Wilson Journal of Ornithology (122) 806-809
We attempted to collect diet samples using throat ligatures from nestlings of three songbird species in a riparian woodland in southeastern Arizona from May to August 2009. We had success with Song Sparrows (Melospiza melodia), observed adult Yellow-breasted Chats (Icteria virens) reclaim food from nestlings, and discontinued the use of...
Relationship between mass extinction and iridium across the Cretaceous-Paleogene boundary in New Jersey
K.G. Miller, Robert M. Sherrell, J.V. Browning, M.P. Field, W. Gallagher, R.K. Olsson, P. J. Sugarman, S. Tuorto, H. Wahyudi
2010, Geology (38) 867-870
We directly link iridium (Ir) anomalies in New Jersey to the mass extinction of marine plankton marking the Cretaceous-Paleogene (K-Pg) boundary. We confirm previous reports of an Ir anomaly 20 cm below the extinction of Cretaceous macrofauna (the "Pinna" bed) with new results from a muddy sand section from Tighe...
Assessment of extreme quantitative precipitation forecasts and development of regional extreme event thresholds using data from HMT-2006 and COOP observers
F.M. Ralph, E. Sukovich, D. Reynolds, M. Dettinger, S. Weagle, W. Clark, P.J. Neiman
2010, Journal of Hydrometeorology (11) 1286-1304
Extreme precipitation events, and the quantitative precipitation forecasts (QPFs) associated with them, are examined. The study uses data from the Hydrometeorology Testbed (HMT), which conducted its first field study in California during the 2005/06 cool season. National Weather Service River Forecast Center (NWS RFC) gridded QPFs for 24-h periods at...
Uses and biases of volunteer water quality data
J.V. Loperfido, P. Beyer, C.L. Just, J. L. Schnoor
2010, Environmental Science & Technology (44) 7193-7199
State water quality monitoring has been augmented by volunteer monitoring programs throughout the United States. Although a significant effort has been put forth by volunteers, questions remain as to whether volunteer data are accurate and can be used by regulators. In this study, typical volunteer water quality measurements from laboratory...
Wildlife underpasses on U.S. 64 in North Carolina: integrating management and science objectives
Mark D. Jones, Frank T. van Manen, Travis W. Wilson, David R. Cox
2010, Book chapter, Safe Passages: Highways, Wildlife, and Habitat Connectivity
This chapter on wildlife underpasses on U.S. Highway 64 in North Carolina is from a book on highways, wildlife, and habitat connectivity. U.S. 64 is an important route in North Carolina connecting major population centers and highways that underwent a major upgrade from a two-lane rural road to a major...
Conservation practice establishment in two northeast Iowa watersheds: Strategies, water quality implications, and lessons learned
Philip W. Gassman, J.A. Tisl, E.A. Palas, C.L. Fields, T.M. Isenhart, K. E. Schilling, C.F. Wolter, L.S. Seigley, M.J. Helmers
2010, Journal of Soil and Water Conservation (65) 381-392
Coldwater trout streams are important natural resources in northeast Iowa. Extensive efforts have been made by state and federal agencies to protect and improve water quality in northeast Iowa streams that include Sny Magill Creek and Bloody Run Creek, which are located in Clayton County. A series of three water...
Seismic hazard of the Enriquillog-Plantain Garden fault in Haiti inferred from palaeoseismology
C.S. Prentice, P. Mann, A. J. Crone, R.D. Gold, K.W. Hudnut, R.W. Briggs, R.D. Koehler, P. Jean
2010, Nature Geoscience (3) 789-793
The Enriquillog-Plantain Garden fault zone is recognized as one of the primary plate-bounding fault systems in Haiti. The strike-slip fault runs adjacent to the city of Port-au-Prince and was initially thought to be the source of the 12 January 2010, M w 7.0 earthquake. Haiti experienced significant earthquakes in 1751...
Characterization of dissolved organic matter in fogwater by excitation-emission matrix fluorescence spectroscopy
J.E. Birdwell, K.T. Valsaraj
2010, Atmospheric Environment (44) 3246-3253
Dissolved organic matter (DOM) present in fogwater samples collected in southeastern Louisiana and central-eastern China has been characterized using excitation-emission matrix fluorescence spectroscopy. The goal of the study was to illustrate the utility of fluorescence for obtaining information on the large fraction of organic carbon in fogwaters (typically >40% by...
Quantifying potential tsunami hazard in the Puysegur subduction zone, south of New Zealand
G.P. Hayes, K.P. Furlong
2010, Geophysical Journal International (183) 1512-1524
Studies of subduction zone seismogenesis and tsunami potential, particularly of large subduction zones, have recently seen a resurgence after the great 2004 earthquake and tsunami offshore of Sumatra, yet these global studies have generally neglected the tsunami potential of small subduction zones such as the Puysegur subduction zone, south of...
Recruitment of burbot (Lota lota L.) in Lake Erie: An empirical modelling approach
M.A. Stapanian, L.D. Witzel, A. Cook
2010, Ecology of Freshwater Fish (19) 326-337
World-wide, many burbot Lota lota (L.) populations have been extirpated or are otherwise in need of conservation measures. By contrast, burbot made a dramatic recovery in Lake Erie during 1993-2001 but declined during 2002-2007, due in part to a sharp decrease in recruitment. We used Akaike's Information Criterion to evaluate...
Seabird bycatch in Alaska demersal longline fishery trials: a demographic summary
Elizabeth M. Phillips, HannahRose M. Nevins, Scott A. Hatch, Andrew M. Ramey, Melissa A. Miller, James T. Harvey
2010, Marine Ornithology: Journal of Seabird Research and Conservation (38) 111-117
The seasonal and spatial demographics are summarized for seabirds killed incidentally during gear modification trials for a demersal longline fishery in the Bering Sea. We examined 417 carcasses, including Northern Fulmar Fulmarus glacialis (n = 205), Glaucous-winged Gull Larus glaucescens (n = 103), Short-tailed Shearwater Puffinus tenuirostris (n = 48),...
River solute fluxes reflecting active hydrothermal chemical weathering of the Yellowstone Plateau Volcanic Field, USA
S. Hurwitz, William C. Evans, J. B. Lowenstern
2010, Chemical Geology (276) 331-343
In the past few decades numerous studies have quantified the load of dissolved solids in large rivers to determine chemical weathering rates in orogenic belts and volcanic areas, mainly motivated by the notion that over timescales greater than ~100kyr, silicate hydrolysis may be the dominant sink for atmospheric CO2, thus...
Mapping brucellosis increases relative to elk density using hierarchical Bayesian models
Paul C. Cross, Dennis M. Heisey, Brandon M. Scurlock, William H. Edwards, Angela Brennan, Michael R. Ebinger
2010, PLoS ONE (5) 1-9
The relationship between host density and parasite transmission is central to the effectiveness of many disease management strategies. Few studies, however, have empirically estimated this relationship particularly in large mammals. We applied hierarchical Bayesian methods to a 19-year dataset of over 6400 brucellosis tests of adult female elk (Cervus elaphus)...
A simplified In Situ cosmogenic 14C extraction system
J.S. Pigati, N.A. Lifton, A.J. Timothy Jull, Jay Quade
2010, Radiocarbon (52) 1236-1243
We describe the design, construction, and testing of a new, simplified in situ radiocarbon extraction system at the University of Arizona. Blank levels for the new system are low ((234 ?? 11) ?? 103 atoms (1 ??; n = 7)) and stable. The precision of a given measurement depends on...
Breeding biology and natural history of the Slate-throated Whitestart in Venezuela
R.A. Ruggera, T. E. Martin
2010, Wilson Journal of Ornithology (122) 447-454
We provide details on the breeding biology of the Slate-throated Whitestart (Myioborus miniatus) from 126 nests found during seven breeding seasons, 2002-2008, at Yacamb?? National Park, Venezuela. Nesting activity peaked in late April and May. Only the female built the nest and incubated the eggs. Males rarely visited the nest...
Response to the comment by Henry Kahn and Dennis Santella on a summary of the development of a signature for detection of residual dust from the collapse of the World Trade Center buildings
Gregory P. Meeker, Heather Lowers, Paul J. Lioy, Morton Lippmann
2010, Journal of Exposure Science and Environmental Epidemiology (20) 491-492
A response by Gregory P. Meeker and colleagues to a commentary on their article on the development of a signature for detection of residual dust from the collapse of the World Trade Center buildings is presented...
Mid-Piacenzian sea surface temperature record from ODP Site 1115 in the western equatorial Pacific
Danielle Stoll
2010, Stratigraphy (7) 1-6
Planktic foraminifer assemblages and alkenone unsaturation ratios have been analyzed for the mid-Piacen-zian (3.3 to 2.9 Ma) section of Ocean Drilling Program (ODP) Site 1115B, located in the western equatorial Pacific off the coast of New Guinea. Cold and warm season sea surface temperature (SST) estimates were determined using a...
Novel silver tubing method for quantitative introduction of water into high temperature conversion systems for stable hydrogen and oxygen isotopic measurements
Haiping Qi, Manfred Groning, Tyler B. Coplen, Bryan Buck, Stanley J. Mroczkowski, Willi A. Brand, Heike Geilmann, Matthias Gehre
2010, Rapid Communications in Mass Spectrometry (24) 1821-1827
A new method to seal water in silver tubes for use in a TC/EA reduction unit using a semi-automated sealing apparatus can yield reproducibilities (1 standard deviation) of δ2H and &delta18O measurements of 1.0 ‰ and 0.06 ‰, respectively. These silver tubes containing reference waters may be preferred for calibration...
Analysis of solvent dyes in refined petroleum products by electrospray ionization mass spectrometry
Colleen E. Rostad
2010, Fuel (89) 997-1005
Solvent dyes are used to color refined petroleum products to enable differentiation between gasoline, diesel, and jet fuels. Analysis for these dyes in the hydrocarbon product is difficult due to their very low concentrations in such a complex matrix. Flow injection analysis/electrospray ionization/mass spectrometry in both negative and positive mode...
