Summary of the Second International Planetary Dunes Workshop: Planetary Analogs - Integrating Models, Remote Sensing, and Field Data, Alamosa, Colorado, USA, May 18-21, 2010
L.K. Fenton, M.A. Bishop, M.C. Bourke, C.S. Bristow, R.K. Hayward, B.H. Horgan, N. Lancaster, T.I. Michaels, D. Tirsch, T.N. Titus, A. Valdez
2010, Conference Paper, Aeolian Research
The Second International Planetary Dunes Workshop took place in Alamosa, Colorado, USA from May 18-21, 2010. The workshop brought together researchers from diverse backgrounds to foster discussion and collaboration regarding terrestrial and extra-terrestrial dunes and dune systems. Two and a half days were spent on five oral sessions and one...
Long generation time delays the genetic response to habitat fragmentation in the threatened florida sand skink
E.D. McCoy, J.Q. Richmond, H.R. Mushinsky, E.J. Britt, J.S. Godley
2010, Conference Paper, Journal of Herpetology
A recent study showed that populations of the threatened Florida Sand Skink had limited loss of genetic diversity over the past 60 yr as a consequence of anthropogenic fragmentation. This study assumed that 60 yr represents 3037 generations for the Florida Sand Skink, but a new evaluation of markrecapture data...
Holocene variations in mineral and grain-size composition along the East Greenland glaciated margin (ca 67°–70°N): local versus long-distance sediment transport
John T. Andrews, Anne E. Jennings, George C. Coleman, Dennis D. Eberl
2010, Quaternary Science Reviews (29) 2619-2632
Quantitative X-Ray Diffraction (qXRD) analysis of the <2 mm sediment fraction from surface (sea floor) samples, and marine sediment cores that span the last 10-12 cal ka BP, are used to describe spatial and temporal variations in non-clay mineral compositions for an area between Kangerlussuaq Trough and Scoresby Sund (???67??-70??N),...
Transmission and reassortment of avian influenza viruses at the Asian-North American interface
Andrew M. Ramey, John M. Pearce, Craig R. Ely, Lisa M. Sheffield Guy, David B. Irons, Dirk V. Derksen, S. Ip
2010, Virology (406) 352-359
Twenty avian influenza viruses were isolated from seven wild migratory bird species sampled at St. Lawrence Island, Alaska. We tested predictions based on previous phylogenetic analyses of avian influenza viruses that support spatially dependent trans-hemispheric gene flow and frequent interspecies transmission at a location situated at the Asian–North American interface....
GIS-based spatial regression and prediction of water quality in river networks: A case study in Iowa
X. Yang, W. Jin
2010, Journal of Environmental Management (91) 1943-1951
Nonpoint source pollution is the leading cause of the U.S.'s water quality problems. One important component of nonpoint source pollution control is an understanding of what and how watershed-scale conditions influence ambient water quality. This paper investigated the use of spatial regression to evaluate the impacts of watershed characteristics on...
Comparison of thiaminase activity in fish using the radiometric and 4-nitrothiophenol colorimetric methods
D. C. Honeyfield, J.W. Hanes, L. Brown, C.E. Kraft, T.P. Begley
2010, Journal of Great Lakes Research (36) 641-645
NoticeThis publication has been retracted. See the retraction notice....
Solute and heat transport model of the Henry and Hilleke laboratory experiment
C.D. Langevin, A.M. Dausman, M.C. Sukop
2010, Ground Water (48) 757-770
SEAWAT is a coupled version of MODFLOW and MT3DMS designed to simulate variable-density ground water flow and solute transport. The most recent version of SEAWAT, called SEAWAT Version 4, includes new capabilities to represent simultaneous multispecies solute and heat transport. To test the new features in SEAWAT, the laboratory experiment...
Mercury in mosses Hylocomium splendens (Hedw.) B.S.G. and Pleurozium schreberi (Brid.) Mitt. from Poland and Alaska: Understanding the origin of pollution sources
Z.M. Migaszewski, A. Galuszka, ogonekgowska S. Dole, J.G. Crock, P. J. Lamothe
2010, Ecotoxicology and Environmental Safety (73) 1345-1351
This report shows baseline concentrations of mercury in the moss species Hylocomium splendens and Pleurozium schreberi from the Kielce area and the remaining Holy Cross Mountains (HCM) region (south-central Poland), and Wrangell-Saint Elias National Park and Preserve (Alaska) and Denali National Park and Preserve (Alaska). Like mosses from many European...
The relationship between noise correlation and the Green's function in the presence of degeneracy and the absence of equipartition
V.C. Tsai
2010, Geophysical Journal International (182) 1509-1514
Recent derivations have shown that when noise in a physical system has its energy equipartitioned into the modes of the system, there is a convenient relationship between the cross correlation of time-series recorded at two points and the Green's function of the system. Here, we show that even when energy...
Identification of nitrogen sources to four small lakes in the agricultural region of Khorezm, Uzbekistan
M. Shanafield, M. Rosen, L. Saito, S. Chandra, J. Lamers, Bakhriddin Nishonov
2010, Biogeochemistry (101) 357-368
Pollution of inland waters by agricultural land use is a concern in many areas of the world, and especially in arid regions, where water resources are inherently scarce. This study used physical and chemical water quality and stable nitrogen isotope (δ15N) measurements from zooplankton to examine nitrogen (N) sources and...
Multivariate analysis of the geochemistry and mineralogy of soils along two continental-scale transects in North America
L.J. Drew, E.C. Grunsky, D. M. Sutphin, L. G. Woodruff
2010, Science of the Total Environment (409) 218-227
Soils collected in 2004 along two North American continental-scale transects were subjected to geochemical and mineralogical analyses. In previous interpretations of these analyses, data were expressed in weight percent and parts per million, and thus were subject to the effect of the constant-sum phenomenon. In a new approach to the...
Modifications to the bottomless lift net for sampling nekton in tidal mangrove forests
C.C. McIvor, N.L. Silverman
2010, Wetlands Ecology and Management (18) 627-635
Sampling fishes in vegetated intertidal wetlands is logistically challenging. We modified the 2 ?? 3-m2 bottomless lift net developed for sampling nekton (fish and decapod crustaceans) on the surface of salt marshes for use in tidal mangrove forests with a woody (as opposed to herbaceous) underground root system. As originally...
Phosphorus dynamics in soils irrigated with reclaimed waste water or fresh water - A study using oxygen isotopic composition of phosphate
I. Zohar, A. Shaviv, M. Young, Carol Kendall, Steven R. Silva, A. Paytan
2010, Geoderma (159) 109-121
Transformations of phosphate (Pi) in different soil fractions were tracked using the stable isotopic composition of oxygen in phosphate (δ18Op) and Pi concentrations. Clay soil from Israel was treated with either reclaimed waste water (secondary, low grade) or with fresh water amended with a chemical fertilizer of a known isotopic...
Effects of exploitation on black bear populations at White River National Wildlife Refuge
J. D. Clark, R. Eastridge, M.J. Hooker
2010, Journal of Wildlife Management (74) 1448-1456
We live-trapped American black bears (Ursus americanus) and sampled DNA from hair at White River National Wildlife Refuge, Arkansas, USA, to estimate annual population size (N), growth (λ), and density. We estimated N and λ with open population models, based on live-trapping data collected from 1998 through 2006, and robust...
Floral and nesting resources, habitat structure, and fire influence bee distribution across an open-forest gradient
R. Grundel, R.P. Jean, K.J. Frohnapple, G.A. Glowacki, P.E. Scott, N.B. Pavlovic
2010, Ecological Applications (20) 1678-1692
Given bees' central effect on vegetation communities, it is important to understand how and why bee distributions vary across ecological gradients. We examined how plant community composition, plant diversity, nesting suitability, canopy cover, land use, and fire history affected bee distribution across an open-forest gradient in northwest Indiana, USA, a...
Millennial-scale variability during the last glacial in vegetation records from North America
Gonzalo Jiménez-Moreno, R. Scott Anderson, S. Desprat, L.D. Grigg, E.C. Grimm, L.E. Heusser, Brian F. Jacobs, C. Lopez-Martinez, C.L. Whitlock, Debra A. Willard
2010, Quaternary Science Reviews (29) 2865-2881
High-resolution pollen records from North America show that terrestrial environments were affected by Dansgaard-Oeschger (D-O) and Heinrich climate variability during the last glacial. In the western, more mountainous regions, these climate changes are generally observed in the pollen records as altitudinal movements of climate-sensitive plant species, whereas in the southeast,...
Effect of concentration of dispersed organic matter on optical maturity parameters: Interlaboratory results of the organic matter concentration working group of the ICCP.
J.G. Mendonca Filho, C.V. Araujo, A.G. Borrego, A. Cook, D. Flores, P. Hackley, J.C. Hower, M.L. Kern, K. Kommeren, J. Kus, Maria Mastalerz, J.O. Mendonca, T.R. Menezes, J. Newman, P. Ranasinghe, I.V.A.F. Souza, I. Suarez-Ruiz, Y. Ujiie
2010, International Journal of Coal Geology (84) 154-165
The main objective of this work was to study the effect of the kerogen isolation procedures on maturity parameters of organic matter using optical microscopes. This work represents the results of the Organic Matter Concentration Working Group (OMCWG) of the International Committee for Coal and Organic Petrology (ICCP) during the...
A general science-based framework for dynamical spatio-temporal models
C. K. Wikle, M.B. Hooten
2010, Test (19) 417-451
Spatio-temporal statistical models are increasingly being used across a wide variety of scientific disciplines to describe and predict spatially-explicit processes that evolve over time. Correspondingly, in recent years there has been a significant amount of research on new statistical methodology for such models. Although descriptive models that approach the problem...
Meteoric 10Be in soil profiles - A global meta-analysis
Joseph A. Graly, Paul R. Bierman, Lucas J. Reusser, Milan J. Pavich
2010, Geochimica et Cosmochimica Acta (74) 6814-6829
In order to assess current understanding of meteoric 10Be dynamics and distribution in terrestrial soils, we assembled a database of all published meteoric 10Be soil depth profiles, including 104 profiles from 27 studies in globally diverse locations, collectively containing 679 individual measurements. This allows for the systematic comparison of meteoric...
Geoinformatics: Transforming data to knowledge for geosciences
A.K. Sinha, Z. Malik, A. Rezgui, C. G. Barnes, K. Lin, G. Heiken, W.A. Thomas, L.C. Gundersen, R. Raskin, I. Jackson, P. Fox, D. McGuinness, D. Seber, H. Zimmerman
2010, GSA Today (20) 4-10
An integrative view of Earth as a system, based on multidisciplinary data, has become one of the most compelling reasons for research and education in the geosciences. It is now necessary to establish a modern infrastructure that can support the transformation of data to knowledge. Such an information infrastructure for...
Effects of ungulate management on vegetation at Hakalau Forest National Wildlife Refuge, Hawai'i Island
S.C. Hess, J.J. Jeffrey, L.W. Pratt, D.L. Ball
2010, Pacific Conservation Biology (16) 144-150
We compiled and analysed data from 1987-2004 on vegetation monitoring during feral ungulate management at Hakalau Forest National Wildlife Refuge, a tropical montane rainforest on the island of Hawai'i All areas in the study had previously been used by ungulates, but cattle (Bos taurus) were removed and feral pig (Sus...
Anthropogenic tracers, endocrine disrupting chemicals, and endocrine disruption in Minnesota lakes
J.H. Writer, L. B. Barber, G.K. Brown, Howard E. Taylor, R.L. Kiesling, M.L. Ferrey, N.D. Jahns, S.E. Bartell, H.L. Schoenfuss
2010, Science of the Total Environment (409) 100-111
Concentrations of endocrine disrupting chemicals and endocrine disruption in fish were determined in 11 lakes across Minnesota that represent a range of trophic conditions and land uses (urban, agricultural, residential, and forested) and in which wastewater treatment plant discharges were absent. Water, sediment, and passive polar organic integrative samplers (POCIS)...
Constructing an interdisciplinary flow regime recommendation
J.M. Bartholow
2010, Journal of the American Water Resources Association (46) 892-906
It is generally agreed that river rehabilitation most often relies on restoring a more natural flow regime, but credibly defining the desired regime can be problematic. I combined four distinct methods to develop and refine month-by-month and event-based flow recommendations to protect and partially restore the ecological integrity of the...
Climate change threatens polar bear populations: A stochastic demographic analysis
C.M. Hunter, H. Caswell, M.C. Runge, E.V. Regehr, Steven C. Amstrup, I. Stirling
2010, Ecology (91) 2883-2897
The polar bear (Ursus maritimus) depends on sea ice for feeding, breeding, and movement. Significant reductions in Arctic sea ice are forecast to continue because of climate warming. We evaluated the impacts of climate change on polar bears in the southern Beaufort Sea by means of a demographic analysis, combining...
Assessing macroinvertebrate biodiversity in freshwater ecosystems: Advances and challenges in dna-based approaches
M.E. Pfrender, L.C. Ferrington Jr., C.P. Hawkins, P.L. Hartzell, M. Bagley, S. Jackson, G.W. Courtney, D. P. Larsen, B.R. Creutzburg, C.A. Levesque, J.H. Epler, J.C. Morse, S. Fend, M.J. Petersen, D. Ruiter, D. Schindel, M. Whiting
2010, The Quarterly Review of Biology (85) 319-340
Assessing the biodiversity of macroinvertebrate fauna in freshwater ecosystems is an essential component of both basic ecological inquiry and applied ecological assessments. Aspects of taxonomic diversity and composition in freshwater communities are widely used to quantify water quality and measure the efficacy of remediation and restoration efforts. The accuracy and...
