Magnetostratigraphy of the Neogene Chaka basin and its implications for mountain building processes in the north-eastern Tibetan Plateau
H.-P. Zhang, W.H. Craddock, Richard O. Lease, W.-T. Wang, D.-Y. Yuan, P.-Z. Zhang, P. Molnar, D.-W. Zheng, W.-J. Zheng
2012, Basin Research (24) 31-50
Magnetostratigraphy of sedimentary rock deposited in the Chaka basin (north‐eastern Tibetan Plateau) indicates a late Miocene onset of basin formation and subsequent development of the adjacent Qinghai Nan Shan. Sedimentation in the basin initiated at ∼11 Ma. In the lower part of the basin fill, a coarsening‐upward sequence starting at ∼9 Ma,...
Crop classification modelling using remote sensing and environmental data in the Greater Platte River Basin, USA
Daniel M. Howard, Bruce K. Wylie, Larry L. Tieszen
2012, International Journal of Remote Sensing (33) 6094-6108
With an ever expanding population, potential climate variability and an increasing demand for agriculture-based alternative fuels, accurate agricultural land-cover classification for specific crops and their spatial distributions are becoming critical to researchers, policymakers, land managers and farmers. It is important to ensure the sustainability of these and other land uses...
Intelligent estimation of spatially distributed soil physical properties
F. Iwashita, Michael J. Friedel, G.F. Ribeiro, Stephen J. Fraser
2012, Geoderma (170) 1-10
Spatial analysis of soil samples is often times not possible when measurements are limited in number or clustered. To obviate potential problems, we propose a new approach based on the self-organizing map (SOM) technique. This approach exploits underlying nonlinear relation of the steady-state geomorphic concave–convex nature of hillslopes (from hilltop...
Nekton density patterns and hurricane recovery in submerged aquatic vegetation, and along non-vegetated natural and created edge habitats
Megan La Peyre, J. Gordon
2012, Estuarine, Coastal and Shelf Science (98) 108-118
We compared nekton habitat value of submerged aquatic vegetation, flooded non-vegetated natural and man-made edge habitats in mesohaline interior marsh areas in southwest Louisiana using a 1-m2 throw trap and 3-mm bag seine. When present, SAV habitats supported close to 4 times greater densities and higher species richness of nekton as compared to either natural or man-made...
Available benthic habitat type may influence predation risk in larval lampreys
Dustin M. Smith, Stuart A. Welsh, Philip J. Turk
2012, Ecology of Freshwater Fish (21) 160-163
Population declines of lamprey species have largely been attributed to habitat degradation, yet there still remain many unanswered questions about the relationships between lampreys and their habitats (Torgensen & Close 2004; Smith et al. 2011). One...
Wildlife forestry
Daniel J. Twedt
Okia Clement Akais, editor(s)
2012, Book chapter, Global Perspectives on Sustainable Forest Management
Role of remote sensing for land-use and land-cover change modeling
Terry Sohl, Benjamin Sleeter
Chandra P. Giri, editor(s)
2012, Book chapter, Remote sensing of land use and land cover: Principles and applications
No abstract available....
Wildlife toxicology: environmental contaminants and their national and international regulation
K. Christiana Grim, Anne Fairbrother, Barnett A. Rattner
A. Alonso Aguirre, Richard S. Ostfeld, Peter Daszak, editor(s)
2012, Book chapter, New directions in conservation medicine: applied cases of ecological health
No abstract available....
Response of salt marsh and mangrove wetlands to changes in atmospheric CO2, climate, and sea-level
Karen L. McKee, Kerrylee Rogers, Neil Saintilan
Beth A. Middleton, editor(s)
2012, Book chapter, Global change and the function and distribution of wetlands
Coastal salt marsh and mangrove ecosystems are particularly vulnerable to changes in atmospheric CO2 concentrations and associated climate and climate-induced changes. We provide a review of the literature detailing theoretical predictions and observed responses of coastal wetlands to a range of climate change stressors, including CO2, temperature, rainfall, and sea-level...
Thermal infrared remote sensing of water temperature in riverine landscapes
Rebecca N. Handcock, Christian E. Torgersen, Keith A. Cherkauer, Alan R. Gillespie, Tockner Klement, Russell N. Faux, Jing Tan
Patrice E. Carbonneau, Hervé Piégay, editor(s)
2012, Book chapter, Fluvial remote sensing for science and management
Water temperature in riverine landscapes is an important regional indicator of water quality that is influenced by both ground- and surface-water inputs, and indirectly by land use in the surrounding watershed (Brown and Krygier, 1970; Beschta et al., 1987; Chen et al., 1998; Poole and Berman, 2001).Coldwater fishes such as...
Foraging segregation and genetic divergence between geographically proximate colonies of a highly mobile seabird
Anne E. Wiley, Andreanna J. Welch, P.H. Ostrom, Helen F. James, Craig A. Stricker, R.C. Fleischer, H. Gandhi, Josh Adams, D. G. Ainley, F. Duvall, N. Holmes, D. Hu, S. Judge, J. Penniman, K.A. Swindle
2012, Oecologia (168) 119-130
Foraging segregation may play an important role in the maintenance of animal diversity, and is a proposed mechanism for promoting genetic divergence within seabird species. However, little information exists regarding its presence among seabird populations. We investigated genetic and foraging divergence between two colonies of endangered Hawaiian petrels (Pterodroma sandwichensis)...
Climatic forcing of Quaternary deep-sea benthic communities in the North Pacific Ocean
Moriaki Yasuhara, G. Hunt, T. M. Cronin, N. Hokanishi, H. Kawahata, Akira Tsujimoto, M. Ishitake
2012, Paleobiology (38) 162-179
There is growing evidence that changes in deep-sea benthic ecosystems are modulated by climate changes, but most evidence to date comes from the North Atlantic Ocean. Here we analyze new ostracod and published foraminiferal records for the last 250,000 years on Shatsky Rise in the North Pacific Ocean. Using linear...
Why farmers adopt best management practice in the United States: A meta-analysis of the adoption literature
Adam Baumgart-Getz, Linda Stalker Prokopy, Kristin Floress
2012, Journal of Environmental Management (96) 17-25
This meta-analysis of both published and unpublished studies assesses factors believed to influence adoption of agricultural Best Management Practices in the United States. Using an established statistical technique to summarize the adoption literature in the United States, we identified the following variables as having the largest impact on adoption: access...
A Holocene record of endogenic iron and manganese precipitation and vegetation history in a lake-fen complex in northwestern Minnesota
Walter E. Dean, L.A. Doner
2012, Journal of Paleolimnology (47) 29-42
Little Shingobee Lake and Fen are part of the extensive network of lakes and wetlands in the Shingobee River headwaters of northwestern Minnesota, designed to study the interactions between surface and ground waters. Prior to about 11.2 cal. ka, most of these lakes and wetlands were interconnected to form glacial Lake...
CO2–rock–brine interactions in Lower Tuscaloosa Formation at Cranfield CO2 sequestration site, Mississippi, U.S.A.
Jiemin Lu, Yousif K. Kharaka, James J. Thordsen, Juske Horita, Athanasios Karamalidis, Craig Griffith, J. Alexandra Hakala, Gil Ambats, David R. Cole, Tommy J. Phelps, Michael A. Manning, Paul J. Cook, Susan D. Hovorka
2012, Chemical Geology (291) 269-277
A highly integrated geochemical program was conducted at the Cranfield CO2-enhanced oil recovery (EOR) and sequestration site, Mississippi, U.S.A.. The program included extensive field geochemical monitoring, a detailed petrographic study, and an autoclave experiment under in situ reservoir conditions. Results show that mineral reactions in the Lower Tuscaloosa reservoir were...
Landscape controls on the timing of spring, autumn, and growing season length in mid-Atlantic forests
A.J. Elmore, S.M. Guinn, B. J. Minsley, A.D. Richardson
2012, Global Change Biology (18) 656-674
The timing of spring leaf development, trajectories of summer leaf area, and the timing of autumn senescence have profound impacts to the water, carbon, and energy balance of ecosystems, and are likely influenced by global climate change. Limited field-based and remote-sensing observations have suggested complex spatial patterns related to geographic...
Airborne electromagnetic imaging of discontinuous permafrost
B. J. Minsley, J.D. Abraham, B. D. Smith, J. C. Cannia, C.I. Voss, M.T. Jorgenson, Michelle Ann Walvoord, B.K. Wylie, L. Anderson, L.B. Ball, M. Deszcz-Pan, T.P. Wellman, T. A. Ager
2012, Geophysical Research Letters (39) 1-8
The evolution of permafrost in cold regions is inextricably connected to hydrogeologic processes, climate, and ecosystems. Permafrost thawing has been linked to changes in wetland and lake areas, alteration of the groundwater contribution to streamflow, carbon release, and increased fire frequency. But detailed knowledge about the dynamic state of permafrost...
Oxygen and sulfur isotope systematics of sulfate produced during abiotic and bacterial oxidation of sphalerite and elemental sulfur
N. Balci, B. Mayer, W. C. Pat Shanks III, K.W. Mandernack
2012, Geochimica et Cosmochimica Acta (77) 335-351
Studies of metal sulfide oxidation in acid mine drainage (AMD) systems have primarily focused on pyrite oxidation, although acid soluble sulfides (e.g., ZnS) are predominantly responsible for the release of toxic metals. We conducted a series of biological and abiotic laboratory oxidation experiments with pure and Fe-bearing sphalerite (ZnS &...
Empirical methods for detecting regional trends and other spatial expressions in antrim shale gas productivity, with implications for improving resource projections using local nonparametric estimation techniques
Timothy C. Coburn, Philip A. Freeman, Emil D. Attanasi
2012, Natural Resources Research (21) 1-21
The primary objectives of this research were to (1) investigate empirical methods for establishing regional trends in unconventional gas resources as exhibited by historical production data and (2) determine whether or not incorporating additional knowledge of a regional trend in a suite of previously established local nonparametric resource prediction algorithms...
A plant distribution shift: temperature, drought or past disturbance?
Dylan W. Schwilk, Jon E. Keeley
2012, PLoS ONE (7)
Simple models of plant response to warming climates predict vegetation moving to cooler and/or wetter locations: in mountainous regions shifting upslope. However, species-specific responses to climate change are likely to be much more complex. We re-examined a recently reported vegetation shift in the Santa Rosa Mountains, California, to better understand...
Discovery and characterization of secretory IgD in rainbow trout: secretory IgD is produced through a novel splicing mechanism
F. Ramirez-Gomez, W. Greene, K. Rego, J.D. Hansen, G. Costa, P. Kataria, E.S. Bromage
2012, Journal of Immunology (188) 1341-1349
The gene encoding IgH δ has been found in all species of teleosts studied to date. However, catfish (Ictalurus punctatus) is the only species of fish in which a secretory form of IgD has been characterized, and it occurs through the use of a dedicated δ-secretory exon, which is absent...
Time-dependent onshore tsunami response
Alex Apotsos, Guy R. Gelfenbaum, Bruce E. Jaffe
2012, Coastal Engineering (64) 73-86
While bulk measures of the onshore impact of a tsunami, including the maximum run-up elevation and inundation distance, are important for hazard planning, the temporal evolution of the onshore flow dynamics likely controls the extent of the onshore destruction and the erosion and deposition of sediment that occurs. However, the...
Thinning of young Douglas-fir forests decreases density of northern flying squirrels in the Oregon Cascades
Tom Manning, Joan C. Hagar, Brenda C. McComb
2012, Forest Ecology and Management (264) 115-124
Large-scale commercial thinning of young forests in the Pacific Northwest is currently promoted on public lands to accelerate the development of late-seral forest structure for the benefit of wildlife species such as northern spotted owls (Strix occidentalis caurina) and their prey, including the northern flying squirrel (Glaucomys sabrinus). Attempts to...
Validation of a coupled wave-flow model in a high-energy setting: the mouth of the Columbia River
Edwin P.L. Elias, Guy R. Gelfenbaum, Andre J. van der Westhuysen
2012, Journal of Geophysical Research C: Oceans (117)
A monthlong time series of wave, current, salinity, and suspended-sediment measurements was made at five sites on a transect across the Mouth of Columbia River (MCR). These data were used to calibrate and evaluate the performance of a coupled hydrodynamic and wave model for the MCR based on the Delft3D...
Forest structure affects trophic linkages: How silvicultural disturbance impacts bats and their insect prey
L.E. Dodd, M.J. Lacki, E.R. Britzke, D.A. Buehler, P.D. Keyser, J.L. Larkin, A.D. Rodewald, T.B. Wigley, P.B. Wood, L.K. Rieske
2012, Forest Ecology and Management (267) 262-270
Vertebrate insectivores such as bats are a pervasive top-down force on prey populations in forest ecosystems. Conservation focusing on forest-dwelling bats requires understanding of community-level interactions between these predators and their insect prey. Our study assessed bat activity and insect occurrence (abundance and diversity) across a gradient of forest disturbance...
