Changes in monoterpene mixing ratios during summer storms in rural New Hampshire (USA)
Karl B. Haase, C. Jordan, E. Mentis, L. Cottrell, H.R. Mayne, R. Talbot, B.C. Sive
2011, Atmospheric Chemistry and Physics (11) 11465-11476
Monoterpenes are an important class of biogenic hydrocarbons that influence ambient air quality and are a principle source of secondary organic aerosol (SOA). Emitted from vegetation, monoterpenes are a product of photosynthesis and act as a response to a variety of environmental factors. Most parameterizations of monoterpene emissions are based...
Productivity of a coral reef using boundary layer and enclosure methods
W. R. McGillis, C. Langdon, B. Loose, Kimberly K. Yates, J. Corredor
2011, Geophysical Research Letters (38)
The metabolism of Cayo Enrique Reef, Puerto Rico, was studied using in situ methods during March 2009. Benthic O2 fluxes were used to calculate net community production using both the boundary layer gradient and enclosure techniques. The boundary layer O2 gradient and the drag coefficients were used to calculate productivity...
Calibration of models using groundwater age
Ward E. Sanford
2011, Hydrogeology Journal (19) 13-16
There have been substantial efforts recently by geochemists to determine the age of groundwater (time since water entered the system) and its uncertainty, and by hydrologists to use these data to help calibrate groundwater models. This essay discusses the calibration of models using groundwater age, with conclusions that emphasize what...
Phytoforensics, dendrochemistry, and phytoscreening: New green tools for delineating contaminants from past and present
J.G. Burken, D.A. Vroblesky, J.-C. Balouet
2011, Environmental Science & Technology (45) 6218-6226
As plants evolved to be extremely proficient in mass transfer with their surroundings and survive as earth’s dominant biomass, they also accumulate and store some contaminants from surroundings, acting as passive samplers. Novel applications and analytical methods have been utilized to gain information about a wide range of contaminants in...
Multi-scale clustering of functional data with application to hydraulic gradients in wetlands
Mark C. Greenwood, Richard S. Sojda, Julia L. Sharp, Rory G. Peck, Donald O. Rosenberry
2011, Journal of Data Science (9) 399-426
A new set of methods are developed to perform cluster analysis of functions, motivated by a data set consisting of hydraulic gradients at several locations distributed across a wetland complex. The methods build on previous work on clustering of functions, such as Tarpey and Kinateder (2003) and Hitchcock et al....
Investigating the spatial distribution of water levels in the Mackenzie Delta using airborne LiDAR
C. Hopkinson, N. Crasto, P. Marsh, D. Forbes, L. Lesack
2011, Hydrological Processes (25) 2995-3011
Airborne light detection and ranging (LiDAR) data were used to map water level (WL) and hydraulic gradients (δH/δx) in the Mackenzie Delta. The LiDAR WL data were validated against eight independent hydrometric gauge measurements and demonstrated mean offsets from − 0·22 to + 0·04 m (σ< 0·11). LiDAR‐based WL gradients...
Geology and petroleum potential of the Eurasia Basin
Thomas E. Moore, Janet K. Pitman
Anthony M. Spencer, A.F. Embry, Donald L. Gautier, A.V. Stoupakova, Kai Sorenson, editor(s)
2011, Book chapter, Arctic petroleum geology
The Eurasia Basin petroleum province comprises the younger, eastern half of the Arctic Ocean, including the Cenozoic Eurasia Basin and the outboard part of the continental margin of northern Europe. For the USGS petroleum assessment (CARA), it was divided into four assessment units (AUs): the Lena Prodelta AU, consisting of...
Influence of dissolved organic matter on the environmental fate of metals, nanoparticles, and colloids
George R. Aiken, Heileen Hsu-Kim, Joseph N. Ryan
2011, Environmental Science & Technology (45) 3196-3201
We have known for decades that dissolved organic matter (DOM) plays a critical role in the biogeochemical cycling of trace metals and the mobility of colloidal particles in aquatic environments. In recent years, concerns about the ecological and human health effects of metal-based engineered nanoparticles released into natural waters have...
Stratigraphy and chronology of offshore to nearshore deposits associated with the Provo shoreline, Pleistocene Lake Bonneville, Utah
Holly S. Godsey, Charles G. Oviatt, David M. Miller, Marjorie A. Chan
2011, Palaeogeography, Palaeoclimatology, Palaeoecology (310) 442-450
Stratigraphic descriptions and radiocarbon data from eleven field locations are presented in this paper to establish a chronostratigraphic framework for offshore to nearshore deposits of Lake Bonneville. Based on key marker beds and geomorphic position, the deposits are interpreted to have accumulated during the period from the late transgressive phase,...
Genetic identity of Thamnophis sp. using microsatellite genetic markers
Brian L. Sloss
2011, Report
Butler’s gartersnake (Thamnophis butleri) was previously listed by the Wisconsin Department of Natural Resources as a state threatened species. Several key questions associated with species identity, integrity, and hybridization with other gartersnake species needed to be addressed to further refi ne the management plan for this species. The objectives of...
Effectiveness of bait tubes for brown treesnake control on Guam
B. Lardner, J. A. Savidge, G.H. Rodda, R.N. Reed, A. A. Yackel Adams, C.S. Clark
2011, Conference Paper, Island Invasives: Eradication and Management: Proceedings of the International Conference on Island Invasives
A bait tube is a device with which a toxicant inserted in a dead mouse (Mus musculus) can be delivered to invasive brown treesnakes (Boiga irregularis) with low risk of non-target bait take. We tested two bait tube designs in a 5ha snake enclosure where the identity of virtually every...
Setting limits: Using air pollution thresholds to protect and restore U.S. ecosystems
M.E. Fenn, K.F. Lambert, T.F. Blett, Douglas A. Burns, L.H. Pardo, Gary M. Lovett, R. A. Haeuber, D.C. Evers, C. T. Driscoll, D.S. Jeffries
2011, Issues in Ecology
More than four decades of research provide unequivocal evidence that sulfur, nitrogen, and mercury pollution have altered, and will continue to alter, our nation's lands and waters. The emission and deposition of air pollutants harm native plants and animals, degrade water quality, affect forest productivity, and are damaging to human...
An ecosystem-scale model for the spread of a host-specific forest pathogen in the Greater Yellowstone Ecosystem
J.A. Hatala, M.C. Dietze, R.L. Crabtree, Katherine C. Kendall, D. Six, P.R. Moorcroft
2011, Ecological Applications (21) 1138-1153
The introduction of nonnative pathogens is altering the scale, magnitude, and persistence of forest disturbance regimes in the western United States. In the high-altitude whitebark pine (Pinus albicaulis) forests of the Greater Yellowstone Ecosystem (GYE), white pine blister rust (Cronartium ribicola) is an introduced fungal pathogen that is...
History of plains resurfacing in the Scandia region of Mars
Kenneth L. Tanaka, Corey M. Fortezzo, Rosalyn K. Hayward, J. Alexis P. Rodriguez, James A. Skinner
2011, Planetary and Space Science (59) 1128-1142
We present a preliminary photogeologic map of the Scandia region of Mars with the objective of reconstructing its resurfacing history. The Scandia region includes the lower section of the regional lowland slope of Vastitas Borealis extending about 500–1800 km away from Alba Mons into the Scandia sub-basin below −4800 m...
Effectiveness of bowl trapping and netting for inventory of a bee community
R. Grundel, K.J. Frohnapple, R.P. Jean, N.B. Pavlovic
2011, Environmental Entomology (40) 374-380
Concern over the status of bees has increased the need to inventory bee communities and, consequently, has increased the need to understand effectiveness of different bee sampling methods. We sampled bees using bowl traps and netting at 25 northwest Indiana sites ranging from open grasslands to forests. Assemblages of bees...
Tracking solutes and water from subsurface drip irrigation application of coalbed methane-produced waters, Powder River Basin, Wyoming
Mark A. Engle, Carleton R. Bern, Richard W. Healy, J.I. Sams, J.W. Zupancic, K.T. Schroeder
2011, Environmental Geosciences (18) 169-187
One method to beneficially use water produced from coalbed methane (CBM) extraction is subsurface drip irrigation (SDI) of croplands. In SDI systems, treated CBM water (injectate) is supplied to the soil at depth, with the purpose of preventing the buildup of detrimental salts near the surface. The technology is...
Anthropogenic influences on shoreline and nearshore evolution in the San Francisco Bay coastal system
K.L. Dallas, P.L. Barnard
2011, Estuarine, Coastal and Shelf Science (92) 195-204
Analysis of four historical bathymetric surveys over a 132-year period has revealed significant changes to the morphology of the San Francisco Bar, an ebb-tidal delta at the mouth of San Francisco Bay estuary. From 1873 to 2005 the San Francisco Bar vertically-eroded an average of 80 cm over a 125...
Sea-level history of the past two interglacial periods: New evidence from U-series dating of reef corals from south Florida
Daniel R. Muhs, Kathleen Simmons, R. Randall Schumann, R. B. Halley
2011, Quaternary Science Reviews (30) 570-590
As a future warm-climate analog, much attention has been directed to studies of the Last Interglacial period or marine isotope substage (MIS) 5.5, which occurred ∼120,000 years ago. Nevertheless, there are still uncertainties with respect to its duration, warmth and magnitude of sea-level rise. Here we present new data from...
Anthropogenic disturbance and landscape patterns affect diversity patterns of aquatic benthic macroinvertebrates
K.O. Maloney, P. Munguia, R.M. Mitchell
2011, Journal of the North American Benthological Society (30) 284-295
Measures of species diversity are valuable tools for assessing ecosystem health. However, most assessments have addressed individual sites or regional taxon pools, with few comparisons of differences in assemblage composition within or among regions. We examined the effects of anthropogenic disturbance on local richness (α diversity) and species turnover (β...
Predicting breeding habitat for amphibians: A spatiotemporal analysis across Yellowstone National Park
Paul E. Bartelt, Alisa L. Gallant, Robert W. Klaver, C.K. Wright, Debra A. Patla, Charles R. Peterson
2011, Ecological Applications (21) 2530-2547
The ability to predict amphibian breeding across landscapes is important for informing land management decisions and helping biologists better understand and remediate factors contributing to declines in amphibian populations. We built geospatial models of likely breeding habitats for each of four amphibian species that breed in Yellowstone National Park (YNP)....
Effects of biologically-active chemical mixtures on fish in a wastewater-impacted urban stream
L. B. Barber, G.K. Brown, T.G. Nettesheim, E.W. Murphy, S.E. Bartell, H.L. Schoenfuss
2011, Science of the Total Environment (409) 4720-4728
Stream flow in urban aquatic ecosystems often is maintained by water-reclamation plant (WRP) effluents that contain mixtures of natural and anthropogenic chemicals that persist through the treatment processes. In effluent-impacted streams, aquatic organisms such as fish are continuously exposed to biologically-active chemicals throughout their life cycles. The North Shore Channel...
A simple graphical approach to quantitative monitoring of rangelands
C. Riginos, J. E. Herrick, S.R. Sundaresan, C. Farley, J. Belnap
2011, Rangelands (33) 6-13
The article reviews graphical interpretation of the four monitoring methods that can be used to generate a variety of indicators of rangeland ecosystem function. Data for all four of the monitoring methods can be recorded on a single data sheet that is designed to be usable by somebody with minimal...
Turtles and culverts, and alternative energy development: an unreported but potentially significant mortality threat to the desert tortoise (Gopherus agassizii)
J.E. Lovich, J.R. Ennen, S. Madrak, B. Grover
2011, Chelonian Conservation and Biology (10) 124-129
Culverts are often used to increase the permeability of roaded landscapes for wildlife, including turtles. Although the benefits of culverts as safe passages for turtles are well documented, under some conditions culverts can entrap them and cause mortality. Here we report a culvert-related mortality in the federally threatened desert tortoise...
Design of ecoregional monitoring in conservation areas of high-latitude ecosystems under contemporary climate change
Erik A. Beever, Andrea Woodward
2011, Biological Conservation (144) 1258-1269
Land ownership in Alaska includes a mosaic of federally managed units. Within its agency’s context, each unit has its own management strategy, authority, and resources of conservation concern, many of which are migratory animals. Though some units are geographically isolated, many are nevertheless linked by paths of abiotic and biotic...
A buoyant plume adjacent to a headland-Observations of the Elwha River plume
Jonathan A. Warrick, Andrew W. Stevens
2011, Continental Shelf Research (31) 85-97
Small rivers commonly discharge into coastal settings with topographic complexities – such as headlands and islands – but these settings are underrepresented in river plume studies compared to more simplified, straight coasts. The Elwha River provides a unique opportunity to study the effects of coastal topography on a buoyant plume,...
