A hierarchical spatial framework and database for the national river fish habitat condition assessment
L. Wang, D. Infante, P. Esselman, A. Cooper, D. Wu, W. Taylor, D. Beard, G. Whelan, A. Ostroff
2011, Fisheries (36) 436-449
Fisheries management programs, such as the National Fish Habitat Action Plan (NFHAP), urgently need a nationwide spatial framework and database for health assessment and policy development to protect and improve riverine systems. To meet this need, we developed a spatial framework and database using National Hydrography Dataset Plus (I-.100,000-scale); http://www.horizon-systems.com/nhdplus)....
Spatial variation in transient water table responses: Differences between an upper and lower hillslope zone
D.R.W. Haught, H. J. Van Meerveld
2011, Hydrological Processes (25) 3866-3877
To better understand storage-runoff dynamics, transient groundwater responses were examined in one of the steep watersheds in British Columbia's coastal mountains. Streamflow and piezometric data were collected for 1year to determine the spatial and temporal relations between transient groundwater levels and discharge. Correlations between piezometer responses and lag-time analysis were...
Estimating temporal trend in the presence of spatial complexity: A Bayesian hierarchical model for a wetland plant population undergoing restoration
T.J. Rodhouse, K.M. Irvine, K.T. Vierling, L.A. Vierling
2011, PLoS ONE (6)
Monitoring programs that evaluate restoration and inform adaptive management are important for addressing environmental degradation. These efforts may be well served by spatially explicit hierarchical approaches to modeling because of unavoidable spatial structure inherited from past land use patterns and other factors. We developed Bayesian hierarchical models to estimate trends...
Measurements of Martian dust devil winds with HiRISE
D.S. Choi, Colin M. Dundas
2011, Geophysical Research Letters (38)
We report wind measurements within Martian dust devils observed in plan view from the High Resolution Imaging Science Experiment (HiRISE) orbiting Mars. The central color swath of the HiRISE instrument has three separate charge‐coupled devices (CCDs) and color filters that observe the surface in rapid cadence. Active features, such as...
Modeling PSInSAR time series without phase unwrapping
L. Zhang, X. Ding, Z. Lu
2011, IEEE Transactions on Geoscience and Remote Sensing (49) 547-556
In this paper, we propose a least-squares-based method for multitemporal synthetic aperture radar interferometry that allows one to estimate deformations without the need of phase unwrapping. The method utilizes a series of multimaster wrapped differential interferograms with short baselines and focuses on arcs at which there are no phase ambiguities....
Radiotelemetry to estimate stream life of adult chum salmon in the McNeil River, Alaska
Joshua Peirce, Edward O. Otis, Mark S. Wipfli, Erich H. Follmann
2011, North American Journal of Fisheries Management (31) 315-322
Estimating salmon escapement is one of the fundamental steps in managing salmon populations. The area-under-the-curve (AUC) method is commonly used to convert periodic aerial survey counts into annual salmon escapement indices. The AUC requires obtaining accurate estimates of stream life (SL) for target species. Traditional methods for estimating SL (e.g.,...
Mapping three-dimensional surface deformation by combining multiple-aperture interferometry and conventional interferometry: Application to the June 2007 eruption of Kilauea Volcano, Hawaii
H.-S. Jung, Z. Lu, J.-S. Won, Michael P. Poland, Asta Mikijus
2011, IEEE Geoscience and Remote Sensing Letters (8) 34-38
Surface deformation caused by an intrusion and small eruption during June 17-19, 2007, along the East Rift Zone of Kilauea Volcano, Hawaii, was three-dimensionally reconstructed from radar interferograms acquired by the Advanced Land Observing Satellite (ALOS) phased-array type L-band synthetic aperture radar (SAR) (PALSAR) instrument. To retrieve the 3-D surface...
Wave-current interaction in Willapa Bay
Maitane Olabarrieta, John C. Warner, Nirnimesh Kumar
2011, Journal of Geophysical Research C: Oceans (116)
This paper describes the importance of wave-current interaction in an inlet-estuary system. The three-dimensional, fully coupled, Coupled Ocean-Atmosphere-Wave-Sediment Transport (COAWST) modeling system was applied in Willapa Bay (Washington State) from 22 to 29 October 1998 that included a large storm event. To represent the interaction between waves and currents, the...
Cold-water coral distributions in the Drake Passage area from towed camera observations - Initial interpretations
Rhian G. Waller, Kathryn Scanlon Catanach, Laura F. Robinson
2011, PLoS ONE (6)
Seamounts are unique deep-sea features that create habitats thought to have high levels of endemic fauna, productive fisheries and benthic communities vulnerable to anthropogenic impacts. Many seamounts are isolated features, occurring in the high seas, where access is limited and thus biological data scarce. There are numerous seamounts within the...
Mechanical analysis of fault slip data: Implications for paleostress analysis
J. Ole Kaven, F. Maerten, D. D. Pollard
2011, Journal of Structural Geology (33) 78-91
Stress inversions are a useful and popular tool for structural geologist and seismologist alike. These methods were first introduced by Wallace (1951) and Bott (1959) and subsequent studies continue to be based on their assumptions: the remote stress tensor is spatially uniform for the rock mass containing the faults and temporally constant over the history of...
Highly variable acquisition rates of Ixodes scapularis (Acari: Ixodidae) by birds on an Atlantic barrier island
S. S. Mitra, P. A. Buckley, F. G. Buckley, H. S. Ginsberg
2010, Journal of Medical Entomology (47) 1019-1027
Acquisition of ticks by bird hosts is a central process in the transmission cycles of many tick-borne zoonoses, but tick recruitment by birds has received little direct study. We documented acquisition of Ixodes scapularis Say on birds at Fire Island, NY, by removing ticks from mist-netted birds, and recording the number of...
A spectral index for estimating soil salinity in the Yellow River Delta region of China using EO-1 Hyperion data
Yongling Weng, Peng Gong, Zhiliang Zhu
2010, Pedosphere (27) 378-388
Soil salinization is one of the most common land degradation processes. In this study, spectral measurements of saline soil samples collected from the Yellow River Delta region of China were conducted in laboratory and hyperspectral data were acquired from an EO-1 Hyperion sensor to quantitatively map soil salinity in the...
A new parameterization for estimating co‐occurrence of interacting species
J. Hardin Waddle, Robert M. Dorazio, Susan C. Walls, Kenneth G. Rice, Jeff Beauchamp, Melinda J. Schuman, Frank J. Mazzotti
2010, Ecological Applications (20) 1467-1475
Models currently used to estimate patterns of species co‐occurrence while accounting for errors in detection of species can be difficult to fit when the effects of covariates on species occurrence probabilities are included. The source of the estimation problems is the particular parameterization used to specify species co‐occurrence probability. We...
High mangrove density enhances surface accretion, surface elevation change, and tree survival in coastal areas susceptible to sea-level rise
M.P. Kumara, L.P. Jayatissa, K. W. Krauss, D.H. Phillips, M. Huxham
2010, Oecologia (164) 545-553
Survival, growth, aboveground biomass accumulation, sediment surface elevation dynamics and nitrogen accumulation in sediments were studied in experimental treatments planted with four different densities (6.96, 3.26, 1.93 and 0.95 seedlings m−2) of the mangrove Rhizophora mucronata in Puttalam Lagoon, Sri Lanka. Measurements were taken over a period of 1,171 days and...
Mercury monitoring in fish using a non-lethal tissue biopsy method
J. Ackerson, Christopher J. Schmitt, Michael J. McKee, William G. Brumbaugh
2010, Missouri Department of Conservation Science Notes (5)
The occurrence of mercury in fish is well-known and often occurs at levels that warrant restricted consumption by sensitive human populations. Because of this, local wildlife and health agencies have developed monitoring programs to identify the magnitude of fish contamination and changes through time. Monitoring mercury levels in fish typically...
The use of genetics for the management of a recovering population: temporal assessment of migratory peregrine falcons in North America
Jeff A. Johnson, Sandra L. Talbot, George K. Sage, Kurt K. Burnham, Joseph W. Brown, Tom L. Maechtle, William S. Seegar, Michael A. Yates, Bud Anderson, David P. Mindell
2010, PLoS ONE (5)
Background:Our ability to monitor populations or species that were once threatened or endangered and in the process of recovery is enhanced by using genetic methods to assess overall population stability and size over time. This can be accomplished most directly by obtaining genetic measures from temporally-spaced samples that reflect...
HIMALA: climate impacts on glaciers, snow, and hydrology in the Himalayan region
Molly Elizabeth Brown, Hua Ouyang, Shahid Habib, Basanta Shrestha, Mandira Shrestha, Prajjwal Panday, Maria Tzortziou, Frederick Policelli, Guleid A. Artan, Amarnath Giriraj, Sagar R. Bajracharya, Adina Racoviteanu
2010, Mountain Research and Development (30) 401-404
Glaciers are the largest reservoir of freshwater on Earth, supporting one third of the world's population. The Himalaya possess one of the largest resources of snow and ice, which act as a freshwater reservoir for more than 1.3 billion people. This article describes a new project called HIMALA, which focuses...
Analytical models for the groundwater tidal prism and associated benthic water flux
Jeffrey N. King, Ashish J. Mehta, Robert G. Dean
2010, Hydrogeology Journal (18) 203-215
The groundwater tidal prism is defined as the volume of water that inundates a porous medium, forced by one tidal oscillation in surface water. The pressure gradient that generates the prism acts on the subterranean estuary. Analytical models for the groundwater tidal prism and associated benthic flux are presented. The...
Distribution of an invasive aquatic pathogen (viral hemorrhagic septicemia virus) in the Great Lakes and its relationship to shipping
Mark B. Bain, Emily R. Cornwell, Kristine M. Hope, Geofrey E. Eckerlin, Rufina N. Casey, Geoffrey H. Groocock, Rodman G. Getchell, Paul R. Bowser, James R. Winton, William N. Batts, Allegra Cangelosi, James W. Casey
2010, PLoS ONE (5)
Viral hemorrhagic septicemia virus (VHSV) is a rhabdovirus found in fish from oceans of the northern hemisphere and freshwaters of Europe. It has caused extensive losses of cultured and wild fish and has become established in the North American Great Lakes. Large die-offs of wild fish in the Great Lakes...
Lithium
B.W. Jaskula
2010, Mining Engineering (62) 61-62
In 2009, lithium consumption in the United States was estimated to have been about 1.2 kt (1,300 st) of contained lithium, a 40-percent decrease from 2008. The United States was estimated to be the fourth largest consumer of lithium, and remained the leading importer of lithium carbonate and the leading...
Estimating the timing and location of shallow rainfall-induced landslides using a model for transient, unsaturated infiltration
Rex L. Baum, Jonathan W. Godt, William Z. Savage
2010, Journal of Geophysical Research F: Earth Surface (115)
Shallow rainfall-induced landslides commonly occur under conditions of transient infiltration into initially unsaturated soils. In an effort to predict the timing and location of such landslides, we developed a model of the infiltration process using a two-layer system that consists of an unsaturated zone above a saturated zone and implemented...
A universal approximation to grain size from images of non-cohesive sediment
D. Buscombe, D. M. Rubin, J.A. Warrick
2010, Journal of Geophysical Research F: Earth Surface (115)
The two-dimensional spectral decomposition of an image of sediment provides a direct statistical estimate, grid-by-number style, of the mean of all intermediate axes of all single particles within the image. We develop and test this new method which, unlike existing techniques, requires neither image processing algorithms for detection and measurement...
Summer stream water temperature models for Great Lakes streams: New York
James E. McKenna, Ryan S. Butryn, Richard P. McDonald
2010, Transactions of the American Fisheries Society (139) 1399-1414
Temperature is one of the most important environmental influences on aquatic organisms. It is a primary driver of physiological rates and many abiotic processes. However, despite extensive research and measurements, synoptic estimates of water temperature are not available for most regions, limiting our ability to make systemwide and large-scale assessments...
230Th/U dating of a late Pleistocene alluvial fan along the southern San Andreas fault
Kathryn E.K. Fletcher, Warren D. Sharp, Katherine J. Kendrick, Whitney M. Behr, Kenneth W. Hudnut, Thomas C. Hanks
2010, GSA Bulletin (122) 1347-1359
U-series dating of pedogenic carbonate-clast coatings provides a reliable, precise minimum age of 45.1 ± 0.6 ka (2σ) for the T2 geomorphic surface of the Biskra Palms alluvial fan, Coachella Valley, California. Concordant ages for multiple subsamples from individual carbonate coatings provide evidence that the 238U-234U-230Th system has remained closed...
Model-based evaluation of highly and low pathogenic avian influenza dynamics in wild birds
Viviane Hénaux, Michael D. Samuel, Christine M. Bunck
2010, PLoS ONE (5)
There is growing interest in avian influenza (AI) epidemiology to predict disease risk in wild and domestic birds, and prevent transmission to humans. However, understanding the epidemic dynamics of highly pathogenic (HPAI) viruses remains challenging because they have rarely been detected in wild birds. We used modeling to integrate available...
