Regional scale impacts of Tamarix leaf beetles (Diorhabda carinulata) on the water availability of western U.S. rivers as determined by multi-scale remote sensing methods
Pamela L. Nagler, Tim Brown, Kevin R. Hultine, Charles van Riper III, Daniel W. Bean, Philip E. Dennison, R. Scott Murray, Edward P. Glenn
2012, Remote Sensing of Environment (118) 227-240
Tamarix leaf beetles (Diorhabda carinulata) have been widely released on western U.S. rivers to control introduced shrubs in the genus Tamarix. Part of the motivation to control Tamarix is to salvage water for human use. Information is needed on the impact of beetles on Tamarix seasonal leaf production and subsequent...
Advancing representation of hydrologic processes in the Soil and Water Assessment Tool (SWAT) through integration of the TOPographic MODEL (TOPMODEL) features
J. Chen, Y. Wu
2012, Journal of Hydrology (420-421) 319-328
This paper presents a study of the integration of the Soil and Water Assessment Tool (SWAT) model and the TOPographic MODEL (TOPMODEL) features for enhancing the physical representation of hydrologic processes. In SWAT, four hydrologic processes, which are surface runoff, baseflow, groundwater re-evaporation and deep aquifer percolation, are modeled by...
A multi-source satellite data approach for modelling Lake Turkana water level: Calibration and validation using satellite altimetry data
N.M. Velpuri, Gabriel B. Senay, K.O. Asante
2012, Hydrology and Earth System Sciences (16) 1-18
Lake Turkana is one of the largest desert lakes in the world and is characterized by high degrees of inter- and intra-annual fluctuations. The hydrology and water balance of this lake have not been well understood due to its remote location and unavailability of reliable ground truth datasets. Managing surface...
Hybrid-optimization algorithm for the management of a conjunctive-use project and well field design
Yung-Chia Chiu, Tracy Nishikawa, Peter Martin
2012, Ground Water (50) 103-117
Hi‐Desert Water District (HDWD), the primary water‐management agency in the Warren Groundwater Basin, California, plans to construct a waste water treatment plant to reduce future septic‐tank effluent from reaching the groundwater system. The treated waste water will be reclaimed by recharging the groundwater basin via recharge ponds as part of...
Landslide-dammed lake at Tangjiashan, Sichuan province, China (triggered by the Wenchuan Earthquake, May 12, 2008): Risk assessment, mitigation strategy, and lessons learned
P. Cui, C. Dang, J. Zhuang, Y. You, X. Chen, Kevin M. Scott
2012, Environmental Earth Sciences (65) 1055-1065
Landslides and rock avalanches triggered by the 2008 Wenchuan Earthquake produced 257 landslide dams, mainly situated along the eastern boundary of the Qinghai-Tibet Plateau where rivers descend approximately 3,000 m into the Sichuan Basin. The largest of these dams blocked the Tongkou River (a tributary of the Fujiang River) at Tangjiashan....
Simultaneous oxidation of arsenic and antimony at low and circumneutral pH, with and without microbial catalysis
Maria P. Asta, D. Kirk Nordstrom, R. Blaine McCleskey
2012, Applied Geochemistry (27) 281-291
Arsenic and Sb are common mine-water pollutants and their toxicity and fate are strongly influenced by redox processes. In this study, simultaneous Fe(II), As(III) and Sb(III) oxidation experiments were conducted to obtain rates under laboratory conditions similar to those found in the field for mine waters of both low and...
PhyloChipTM microarray comparison of sampling methods used for coral microbial ecology
Christina A. Kellogg, Yvette M. Piceno, Lauren M. Tom, Todd Z. DeSantis, David G. Zawada, Gary L. Andersen
2012, Journal of Microbiological Methods (88) 103-109
Interest in coral microbial ecology has been increasing steadily over the last decade, yet standardized methods of sample collection still have not been defined. Two methods were compared for their ability to sample coral-associated microbial communities: tissue punches and foam swabs, the latter being less invasive and preferred by reef...
Microbial water quality before and after the repair of a failing onsite wastewater treatment system adjacent to coastal waters
K.E. Conn, M.Y. Habteselassie, Blackwood A. Denene, R.T. Noble
2012, Journal of Applied Microbiology (112) 214-224
Aims: The objective was to assess the impacts of repairing a failing onsite wastewater treatment system (OWTS, i.e., septic system) as related to coastal microbial water quality. Methods and Results: Wastewater, groundwater and surface water were monitored for environmental parameters, faecal indicator bacteria (total coliforms, Escherichia coli, enterococci) and the...
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...
The use of multiobjective calibration and regional sensitivity analysis in simulating hyporheic exchange
Ramon C. Naranjo, Richard G. Niswonger, Mark Stone, Clinton Davis, Alan McKay
2012, Water Resources Research (48)
We describe an approach for calibrating a two-dimensional (2-D) flow model of hyporheic exchange using observations of temperature and pressure to estimate hydraulic and thermal properties. A longitudinal 2-D heat and flow model was constructed for a riffle-pool sequence to simulate flow paths and flux rates for variable discharge conditions....
Intra- and inter-annual trends in phosphorus loads and comparison with nitrogen loads to Rehoboth Bay, Delaware (USA)
J.A. Volk, J.R. Scudlark, K.B. Savidge, A.S. Andres, R.J. Stenger, W.J. Ullman
2012, Estuarine, Coastal and Shelf Science (96) 139-150
Monthly phosphorus loads from uplands, atmospheric deposition, and wastewater to Rehoboth Bay (Delaware) were determined from October 1998 to April 2002 to evaluate the relative importance of these three sources of P to the Bay. Loads from a representative subwatershed were determined and used in an areal extrapolation to estimate the upland load from the...
Increased atmospheric deposition of mercury in reference lakes near major urban areas
P. C. Van Metre
2012, Environmental Pollution (162) 209-215
Atmospheric deposition of Hg is the predominant pathway for Hg to reach sensitive ecosystems, but the importance of emissions on near-field deposition remains unclear. To better understand spatial variability in Hg deposition, mercury concentrations were analyzed in sediment cores from 12 lakes with undeveloped watersheds near to (<50 km) and remote...
Presence of avian influenza viruses in waterfowl and wetlands during summer 2010 in California: Are resident birds a potential reservoir?
V. Henaux, M.D. Samuel, Robert J. Dusek, J. P. Fleskes, Hon S. Ip
2012, PLoS ONE (7)
Although wild waterfowl are the main reservoir for low pathogenic avian influenza viruses (LPAIv), the environment plays a critical role for the circulation and persistence of AIv. LPAIv may persist for extended periods in cold environments, suggesting that waterfowl breeding areas in the northern hemisphere may be an important reservoir...
Hydrological effects of the increased CO2 and climate change in the Upper Mississippi River Basin using a modified SWAT
Y. Wu, S. Liu, O. I. Abdul-Aziz
2012, Climatic Change (110) 977-1003
Increased atmospheric CO2 concentration and climate change may significantly impact the hydrological and meteorological processes of a watershed system. Quantifying and understanding hydrological responses to elevated ambient CO2 and climate change is, therefore, critical for formulating adaptive strategies for an appropriate management of water resources. In this study, the Soil...
Native rainbow smelt and nonnative alewife distribution related to temperature and light gradients in Lake Champlain
Donna L. Parrish, Paul W. Simonin, Lars G. Rudstam, Patrick J. Sullivan, Bernard Pientka
2012, Journal of Great Lakes Research (38) 115-122
Alewife (Alosa pseudoharengus) recently became established in Lake Champlain and may compete with native rainbow smelt (Osmerus mordax) for food or consume larval rainbow smelt. The strength of this effect depends partly on the spatial and temporal overlap of different age groups of the two species; therefore, we need a...
Correlation of early Paleogene global diversity patterns of large benthic foraminifera with Paleocene-Eocene hyperthermal events
Katherine J. Whidden, Robert J. Jones
2012, Palaios (27) 235-251
Large benthic foraminifera (LBF) were major contributors to many Paleogene carbonate platforms around the world. These photosymbiotic foraminifera lived in warm, oligotrophic, shallow waters within the photic zone. Such Paleogene families as the nummulitids, alveolinids, and orthophragminids rose to prominence in the late Paleocene, thrived in the early and middle...
Application of a weighted-averaging method for determining paleosalinity: a tool for restoration of south Florida's estuaries
G.L. Wingard, J.W. Hudley
2012, Estuaries and Coasts (35) 262-280
A molluscan analogue dataset is presented in conjunction with a weighted-averaging technique as a tool for estimating past salinity patterns in south Florida’s estuaries and developing targets for restoration based on these reconstructions. The method, here referred to as cumulative weighted percent (CWP), was tested using modern surficial samples collected...
Seasonal habitat use and selection by grizzly bears in Northern British Columbia
B. Milakovic, K.L. Parker, D.D. Gustine, R.J. Lay, A.B.D. Walker, M.P. Gillingham
2012, Journal of Wildlife Management (76) 170-180
We defined patterns of habitat use and selection by female grizzly bears (Ursus arctos) in the Besa-Prophet watershed of northern British Columbia. We fitted 13 adult females with Geographic Positioning System (GPS) radio-collars and monitored them between 2001 and 2004. We examined patterns of habitat selection by grizzly bears relative...
Water utilization of the Cretaceous Mussentuchit Member local vertebrate fauna, Cedar Mountain Formation, Utah, USA: Using oxygen isotopic composition of phosphate
C.A. Suarez, Luis A. Gonzalez, G.A. Ludvigson, R.L. Cifelli, E. Tremain
2012, Palaeogeography, Palaeoclimatology, Palaeoecology (313-314) 78-92
While the oxygen isotopic composition of pedogenic carbonate has successfully been used to address the effects of global climate change on the hydrologic cycle, detailed regional paleohydrologic studies are lacking. Since the hydrologic cycle can vary extensively on local or regional scales due to events such as such as...
Concentration, distribution, and translocation of mercury and methylmercury in mine-waste, sediment, soil, water, and fish collected near the Abbadia San Salvatore mercury mine, Monte Amiata district, Italy
V. Rimondi, J. E. Gray, P. Costagliola, O. Vaselli, P. Lattanzi
2012, Science of the Total Environment (414) 318-327
The distribution and translocation of mercury (Hg) was studied in the Paglia River ecosystem, located downstream from the inactive Abbadia San Salvatore mine (ASSM). The ASSM is part of the Monte Amiata Hg district, Southern Tuscany, Italy, which was one of the world’s largest Hg districts. Concentrations of Hg and...
Geochemical constraints on adakites of different origins and copper mineralization
W.-D. Sun, M.-X. Ling, S.-L. Chung, X. Ding, X.-Y. Yang, H.-Y. Liang, W.-M. Fan, R. Goldfarb, Q.-Z. Yin
2012, Journal of Geology (120) 105-120
The petrogenesis of adakites holds important clues to the formation of the continental crust and copper ± gold porphyry mineralization. However, it remains highly debated as to whether adakites form by slab melting, by partial melting of the lower continental crust, or by fractional crystallization of normal arc magmas. Here,...
Expert knowledge as a foundation for the management of secretive species and their habitat
C. Ashton Drew, Jaime Collazo
2012, Book chapter, Expert knowledge and its application in landscape ecology
In this chapter, we share lessons learned during the elicitation and application of expert knowledge in the form of a belief network model for the habitat of a waterbird, the King Rail (Rallus elegans). A belief network is a statistical framework used to graphically represent and evaluate hypothesized...
Photodissolution of soil organic matter
L.M. Mayer, K.R. Thornton, L.L. Schick, J.D. Jastrow, Jennifer W. Harden
2012, Geoderma (170) 314-321
Sunlight has been shown to enhance loss of organic matter from aquatic sediments and terrestrial plant litter, so we tested for similar reactions in mineral soil horizons. Losses of up to a third of particulate organic carbon occurred after continuous exposure to full-strength sunlight for dozens of hours, with similar...
Evidence for earthquake triggering of large landslides in coastal Oregon, USA
W.H. Schulz, S.L. Galloway, J.D. Higgins
2012, Geomorphology (141-142) 88-98
Landslides are ubiquitous along the Oregon coast. Many are large, deep slides in sedimentary rock and are dormant or active only during the rainy season. Morphology, observed movement rates, and total movement suggest that many are at least several hundreds of years old. The offshore Cascadia subduction zone produces great...
Loss and modification of habitat
Francis Lemckert, Stephen Hecnar, David S. Pilliod
John W. Wilkinson, Harold Heatwole, editor(s)
2012, Book chapter, Conservation and decline of amphibians: ecological aspects, effect of humans, and management
Amphibians live in a wide variety of habitats around the world, many of which have been modified or destroyed by human activities. Most species have unique life history characteristics adapted to specific climates, habitats (e.g., lentic, lotic, terrestrial, arboreal, fossorial, amphibious), and local conditions that provide suitable areas for reproduction,...
