Improving our legacy: Incorporation of adaptive management into state wildlife action plans
J.J. Fontaine
2011, Journal of Environmental Management (92) 1403-1408
The loss of biodiversity is a mounting concern, but despite numerous attempts there are few large scale conservation efforts that have proven successful in reversing current declines. Given the challenge of biodiversity conservation, there is a need to develop strategic conservation plans that address species declines even with the inherent...
Particle-size dependence on metal(loid) distributions in mine wastes: Implications for water contamination and human exposure
C.S. Kim, K.M. Wilson, J. J. Rytuba
2011, Applied Geochemistry (26) 484-495
The mining and processing of metal-bearing ores has resulted in contamination issues where waste materials from abandoned mines remain in piles of untreated and unconsolidated material, posing the potential for waterborne and airborne transport of toxic elements. This study presents a systematic method of particle size separation, mass distribution, and...
Determinants of fish assemblage structure in Northwestern Great Plains streams
J.A. Mullen, R.G. Bramblett, C.S. Guy, A.V. Zale, D.W. Roberts
2011, Transactions of the American Fisheries Society (140) 271-281
Prairie streams are known for their harsh and stochastic physical conditions, and the fish assemblages therein have been shown to be temporally variable. We assessed the spatial and temporal variation in fish assemblage structure in five intermittent, adventitious northwestern Great Plains streams representing a gradient of watershed areas. Fish assemblages...
Vibrational, X-ray absorption, and Mössbauer spectra of sulfate minerals from the weathered massive sulfide deposit at Iron Mountain, California
Juraj Majzlan, Charles N. Alpers, Christian Bender Koch, R. Blaine McCleskey, Satish B.C. Myneni, John M. Neil
2011, Chemical Geology (284) 296-305
The Iron Mountain Mine Superfund site in California is a prime example of an acid mine drainage (AMD) system with well developed assemblages of sulfate minerals typical for such settings. Here we present and discuss the vibrational (infrared), X-ray absorption, and M??ssbauer spectra of a number of these phases, augmented...
Labile Fe(II) concentrations in the Atlantic sector of the Southern Ocean along a transect from the subtropical domain to the Weddell Sea Gyre
G. Sarthou, E. Bucciarelli, F. Chever, S.P. Hansard, M. Gonzalez-Davila, J. M. Santana-Casiano, F. Planchon, S. Speich
2011, Biogeosciences Discussions (8) 4163-4208
Labile Fe(II) distributions were investigated in the Sub-Tropical South Atlantic and the Southern Ocean during the BONUS-GoodHope cruise from 34 to 57?? S (February-March 2008). Concentrations ranged from below the detection limit (0.009 nM) to values as high as 0.125 nM. In the surface mixed layer, labile Fe(II) concentrations were...
Movement and survival of brown trout and rainbow trout in an ozark tailwater river
J.W. Quinn, T.J. Kwak
2011, North American Journal of Fisheries Management (31) 299-304
We evaluated the movement of adult brown trout Salmo trutta and rainbow trout Oncorhynchus mykiss in relation to a catch-andrelease area in the White River downstream from Beaver Dam, Arkansas. Nine fish of each species were implanted with radio transmitters and monitored from July 1996 to July 1997. The 1.5-...
Spatiotemporal distribution and population characteristicsof a nonnative lake trout population, with implications for suppression
A.M. Dux, C.S. Guy, W.A. Fredenberg
2011, North American Journal of Fisheries Management (31) 187-196
We evaluated the distribution and population characteristics of nonnative lake trout Salvelinus namaycush in Lake McDonald,Glacier National Park,Montana, to provide biological data in support of a potential suppression program. Using ultrasonic telemetry, we identified spatial and temporal distribution patterns by tracking 36 adult lake trout (1,137 relocations). Lake trout rarely...
A model for seasonal changes in GPS positions and seismic wave speeds due to thermoelastic and hydrologic variations
V.C. Tsai
2011, Journal of Geophysical Research B: Solid Earth (116)
It is known that GPS time series contain a seasonal variation that is not due to tectonic motions, and it has recently been shown that crustal seismic velocities may also vary seasonally. In order to explain these changes, a number of hypotheses have been given, among which thermoelastic and hydrology-induced...
A conduit dilation model of methane venting from lake sediments
B.P. Scandella, C. Varadharajan, Harold F. Hemond, C. Ruppel, R. Juanes
2011, Geophysical Research Letters (38)
Methane is a potent greenhouse gas, but its effects on Earth's climate remain poorly constrained, in part due to uncertainties in global methane fluxes to the atmosphere. An important source of atmospheric methane is the methane generated in organic-rich sediments underlying surface water bodies, including lakes, wetlands, and the ocean....
Projected changes to growth and mortality of Hawaiian corals over the next 100 years
R.K. Hoeke, P. L. Jokiel, R. W. Buddemeier, R.E. Brainard
2011, PLoS ONE (6)
Background: Recent reviews suggest that the warming and acidification of ocean surface waters predicated by most accepted climate projections will lead to mass mortality and declining calcification rates of reef-building corals. This study investigates the use of modeling techniques to quantitatively examine rates of coral cover change due to these...
Revised correlation of Silurian Provincial Series of North America with global and regional chronostratigraphic units and δ13Ccarb chemostratigraphy
Bradley D. Cramer, Carlton E. Brett, Michael J. Melchin, Peep Mannik, Mark A. Kleffner, Patrick I. McLaughlin, David K. Loydell, Axel Munnecke, Lennart Jeppsson, Carlo Corradini, Frank R. Brunton, Matthew R. Saltzman
2011, Lethaia (44) 185-202
Recent revisions to the biostratigraphic and chronostratigraphic assignment of strata from the type area of the Niagaran Provincial Series (a regional chronostratigraphic unit) have demonstrated the need to revise the chronostratigraphic correlation of the Silurian System of North America. Recently, the working group to restudy the base of the Wenlock...
Nitrogen in Chinese coals
D. Wu, J. Lei, B. Zheng, X. Tang, M. Wang, Jiawen Hu, S. Li, B. Wang, R. B. Finkelman
2011, Chinese Journal of Geochemistry (30) 248-254
Three hundred and six coal samples were taken from main coal mines of twenty-six provinces, autonomous regions, and municipalities in China, according to the resource distribution and coal-forming periods as well as the coal ranks and coal yields. Nitrogen was determined by using the Kjeldahl method at U. S. Geological...
Cumulative effects of restoration efforts on ecological characteristics of an open water area within the Upper Mississippi River
B. R. Gray, W. Shi, J.N. Houser, J. T. Rogala, Z. Guan, J. L. Cochran-Biederman
2011, River Research and Applications (27) 537-549
Ecological restoration efforts in large rivers generally aim to ameliorate ecological effects associated with large-scale modification of those rivers. This study examined whether the effects of restoration efforts-specifically those of island construction-within a largely open water restoration area of the Upper Mississippi River (UMR) might be seen at the spatial...
Modifications to existing ground-motion prediction equations in light of new data
G. M. Atkinson, D.M. Boore
2011, Bulletin of the Seismological Society of America (101) 1121-1135
We compare our recent ground-motion prediction equations (GMPEs) for western North America (WNA; Boore and Atkinson, 2008 [BA08]) and eastern North America (ENA; Atkinson and Boore, 2006 [AB06]; Atkinson, 2008 [A08]) to newly available ground-motion data. Based on these comparisons, we suggest revisions to our GMPEs for both WNA and...
Repeatable source, site, and path effects on the standard deviation for empirical ground-motion prediction models
P.-S. Lin, B. Chiou, N. Abrahamson, M. Walling, C.-T. Lee, C.-T. Cheng
2011, Bulletin of the Seismological Society of America (101) 2281-2295
In this study, we quantify the reduction in the standard deviation for empirical ground-motion prediction models by removing ergodic assumption.We partition the modeling error (residual) into five components, three of which represent the repeatable source-location-specific, site-specific, and path-specific deviations from the population mean. A variance estimation procedure of these error...
Study on a pattern classification method of soil quality based on simplified learning sample dataset
Jiahua Zhang, S. Liu, Y. Hu, Y. Tian
2011, Conference Paper, Proceedings - 4th International Conference on Intelligent Computation Technology and Automation, ICICTA 2011
Based on the massive soil information in current soil quality grade evaluation, this paper constructed an intelligent classification approach of soil quality grade depending on classical sampling techniques and disordered multiclassification Logistic regression model. As a case study to determine the learning sample capacity under certain confidence level and estimation...
Developing effective sampling designs for monitoring natural resources in Alaskan national parks: an example using simulations and vegetation data
William L. Thompson, Amy E. Miller, Dorothy C. Mortenson, Andrea Woodward
2011, Biological Conservation (144) 1270-1277
Monitoring natural resources in Alaskan national parks is challenging because of their remoteness, limited accessibility, and high sampling costs. We describe an iterative, three-phased process for developing sampling designs based on our efforts to establish a vegetation monitoring program in southwest Alaska. In the first phase, we defined a sampling...
Factors Controlling Pre-Columbian and Early Historic Maize Productivity in the American Southwest, Part 1: The Southern Colorado Plateau and Rio Grande Regions
L. V. Benson
2011, Journal of Archaeological Method and Theory (18) 1-60
Maize is the New World's preeminent grain crop and it provided the economic basis for human culture in many regions within the Americas. To flourish, maize needs water, sunlight (heat), and nutrients (e. g., nitrogen). In this paper, climate and soil chemistry data are used to evaluate the potential for...
Effects of simultaneous climate change and geomorphic evolution on thermal characteristics of a shallow Alaskan lake
Jennifer R. Griffiths, Daniel E. Schindler, Laurie S. Balistrieri, Gregory T. Ruggerone
2011, Limnology and Oceanography (56) 193-205
We used a hydrodynamics model to assess the consequences of climate warming and contemporary geomorphic evolution for thermal conditions in a large, shallow Alaskan lake. We evaluated the effects of both known climate and landscape change, including rapid outlet erosion and migration of the principal inlet stream, over the past...
Use of pharmaceuticals and pesticides to constrain nutrient sources in coastal groundwater of northwestern Long Island, New York, USA
S. Zhao, P. Zhang, John Crusius, K.D. Kroeger, J.F. Bratton
2011, Journal of Environmental Monitoring (13) 1337-1343
In developed, non-agricultural, unsewered areas, septic systems and fertilizer application to lawns and gardens represent two major sources of nitrogen to coastal groundwater, in addition to atmospheric input. This study was designed to distinguish between these two possible nitrogen sources by analyzing groundwater samples for pharmaceutical residuals, because fertilizers do...
Polar bear population status in the northern Beaufort Sea, Canada, 1971-2006
I. Stirling, T. L. McDonald, E.S. Richardson, E.V. Regehr, Steven C. Amstrup
2011, Ecological Applications (21) 859-876
Polar bears (Ursus maritimus) of the northern Beaufort Sea (NB) population occur on the perimeter of the polar basin adjacent to the northwestern islands of the Canadian Arctic Archipelago. Sea ice converges on the islands through most of the year. We used open-population capture–recapture models to estimate population size...
Consequences of increasing bioenergy demand on wood and forests: An application of the Global Forest Products Model
J. Buongiorno, R. Raunikar, S. Zhu
2011, Journal of Forest Economics (17) 214-229
The Global Forest Products Model (GFPM) was applied to project the consequences for the global forest sector of doubling the rate of growth of bioenergy demand relative to a base scenario, other drivers being maintained constant. The results showed that this would lead to the convergence of the price of...
A computer program for flow-log analysis of single holes (FLASH)
F. D. Day-Lewis, C. D. Johnson, Frederick L. Paillet, K. J. Halford
2011, Ground Water (49) 926-931
A new computer program, FLASH (Flow-Log Analysis of Single Holes), is presented for the analysis of borehole vertical flow logs. The code is based on an analytical solution for steady-state multilayer radial flow to a borehole. The code includes options for (1) discrete fractures and (2) multilayer aquifers. Given vertical...
Rock formation characterization for CO2-EOR and carbon geosequestration; 3D seismic amplitude and coherency anomalies, Wellington Field, Kansas, USA
D. Ohl, A. Raef, L. Watnef, S. Bhattacharya
2011, SEG Technical Program Expanded Abstracts (30) 1978-1983
In this paper, we present a workflow for a Mississipian carbonates characterization case-study integrating post-stack seismic attributes, well-logs porosities, and seismic modeling to explore relating changes in small-scale "lithofacies" properties and/or sub-seismic resolution faulting to key amplitude and coherency 3D seismic attributes. The main objective of this study is to...
Identification and evaluation of shark bycatch in Georgia's commercial shrimp trawl fishery with implications for management
C.N. Belcher, Cecil A. Jennings
2011, Fisheries Management and Ecology (18) 104-112
Many US states have recreational and commercial fisheries that occur in nursery areas occupied by subadult sharks and can potentially affect their survival. Georgia is one of few US states without a directed commercial shark fishery, but the state has a large, nearshore penaeid shrimp trawl fishery in which small...
