Refuge habitats for fishes during seasonal drying in an intermittent stream: Movement, survival and abundance of three minnow species
S.W. Hodges, D.D. Magoulick
2011, Aquatic Sciences (73) 513-522
Drought and summer drying can be important disturbance events in many small streams leading to intermittent or isolated habitats. We examined what habitats act as refuges for fishes during summer drying, hypothesizing that pools would act as refuge habitats. We predicted that during drying fish would show directional movement into...
Methods of InSAR atmosphere correction for volcano activity monitoring
W. Gong, F. Meyer, P.W. Webley, Z. Lu
2011, Conference Paper, International Geoscience and Remote Sensing Symposium (IGARSS)
When a Synthetic Aperture Radar (SAR) signal propagates through the atmosphere on its path to and from the sensor, it is inevitably affected by atmospheric effects. In particular, the applicability and accuracy of Interferometric SAR (InSAR) techniques for volcano monitoring is limited by atmospheric path delays. Therefore, atmospheric correction of...
Developing an operational rangeland water requirement satisfaction index
Gabriel B. Senay, James P. Verdin, James Rowland
2011, International Journal of Remote Sensing (32) 6047-6053
Developing an operational water requirement satisfaction index (WRSI) for rangeland monitoring is an important goal of the famine early warning systems network. An operational WRSI has been developed for crop monitoring, but until recently a comparable WRSI for rangeland was not successful because of the extremely poor performance of the...
Landslide stability: Role of rainfall-induced, laterally propagating, pore-pressure waves
G. R. Priest, W.H. Schulz, W. L. Ellis, J.A. Allan, A. R. Niem, W. A. Niem
2011, Environmental & Engineering Geoscience (17) 315-335
The Johnson Creek Landslide is a translational slide in seaward-dipping Miocene siltstone and sandstone (Astoria Formation) and an overlying Quaternary marine terrace deposit. The basal slide plane slopes sub-parallel to the dip of the Miocene rocks, except beneath the back-tilted toe block, where it slopes inland. Rainfall events raise pore-water...
Fine-scale population structure and riverscape genetics of brook trout (Salvelinus fontinalis) distributed continuously along headwater channel networks
Yoichiro Kanno, Jason C. Vokoun, Benjamin H. Letcher
2011, Molecular Ecology (20) 3711-3729
Linear and heterogeneous habitat makes headwater stream networks an ideal ecosystem in which to test the influence of environmental factors on spatial genetic patterns of obligatory aquatic species. We investigated fine-scale population structure and influence of stream habitat on individual-level genetic differentiation in brook trout (Salvelinus fontinalis) by...
On the use of the beta distribution in probabilistic resource assessments
Ricardo A. Olea
2011, Natural Resources Research (20) 377-388
The triangular distribution is a popular choice when it comes to modeling bounded continuous random variables. Its wide acceptance derives mostly from its simple analytic properties and the ease with which modelers can specify its three parameters through the extremes and the mode. On the negative side, hardly any real...
Diversity and biogeochemical structuring of bacterial communities across the Porangahau ridge accretionary prism, New Zealand
L.J. Hamdan, P.M. Gillevet, J. W. Pohlman, M. Sikaroodi, J. Greinert, R.B. Coffin
2011, FEMS Microbiology Ecology (77) 518-532
Sediments from the Porangahau ridge, located off the northeastern coast of New Zealand, were studied to describe bacterial community structure in conjunction with differing biogeochemical regimes across the ridge. Low diversity was observed in sediments from an eroded basin seaward of the ridge and the community was dominated by uncultured...
Lower crustal relaxation beneath the Tibetan Plateau and Qaidam Basin following the 2001 Kokoxili earthquake
I. Ryder, R. Burgmann, F. Pollitz
2011, Geophysical Journal International (187) 613-630
In 2001 November a magnitude 7.8 earthquake ruptured a 400 km long portion of the Kunlun fault, northeastern Tibet. In this study, we analyse over five years of post-seismic geodetic data and interpret the observed surface deformation in terms of stress relaxation in the thick Tibetan lower crust. We model...
Trophic connections in Lake Superior Part II: the nearshore fish community
A.E. Gamble, T.R. Hrabik, D.L. Yule, J.D. Stockwell
2011, Journal of Great Lakes Research (37) 550-560
We use detailed diet analyses of the predominant planktivorous, benthivorous and piscivorous fish species from Lake Superior to create a nearshore (bathymetric depths < 80 m) fish community food web. The food web was based on analysis of 5125 fish stomachs collected seasonally (spring, summer, fall) from 9 nearshore sites...
Evaluating cost-efficiency and accuracy of hunter harvest survey designs
P.M. Lukacs, J.A. Gude, R.E. Russell, B.B. Ackerman
2011, Wildlife Society Bulletin (35) 430-437
Effective management of harvested wildlife often requires accurate estimates of the number of animals harvested annually by hunters. A variety of techniques exist to obtain harvest data, such as hunter surveys, check stations, mandatory reporting requirements, and voluntary reporting of harvest. Agencies responsible for managing harvested wildlife such as deer...
Rapid Holocene coastal change revealed by high-resolution micropaleontological analysis, Pamlico Sound, North Carolina, USA
Pre C. Grand, S.J. Culver, D. J. Mallinson, K.M. Farrell, D.R. Corbett, B. P. Horton, C. Hillier, S.R. Riggs, S.W. Snyder, M.A. Buzas
2011, Quaternary Research (76) 319-334
Foraminiferal analyses of 404 contiguous samples, supported by diatom, lithologic, geochronologic and seismic data, reveal both rapid and gradual Holocene paleoenvironmental changes in an 8.21-m vibracore taken from southern Pamlico Sound, North Carolina. Data record initial flooding of a latest Pleistocene river drainage and the formation of an estuary 9000....
Performance of ground-penetrating radar on granitic regoliths with different mineral composition
J.M. Breiner, James A. Doolittle, Radley M. Horton, R.C. Graham
2011, Soil Science (176) 435-440
Although ground-penetrating radar (GPR) is extensively used to characterize the regolith, few studies have addressed the effects of chemical and mineralogical compositions of soils and bedrock on its performance. This investigation evaluated the performance of GPR on two different granitic regoliths of somewhat different mineralogical composition in the San Jacinto...
The United Nations framework classification for fossil energy and mineral reserves and resources 2009
Duncan MacDonald, M. Lynch-Bell, J. Ross, S. Heiberg, C. Griffiths, T. Klett
2011, Conference Paper, Proceedings - SPE Annual Technical Conference and Exhibition
Effective resource management in a globalizing economy requires accurate assessments of fossil energy and minerals resources. The recoverable quantities must be described and categorized in a manner that is consistent with scientific and social/economic information describing the economy as well as with the information describing the projects to recover them....
Latitudinal variation in reproductive strategies by the migratory Louisiana Waterthrush
B.J. Mattsson, S.C. Latta, R.J. Cooper, R.S. Mulvihill
2011, Condor (113) 412-418
We evaluated hypotheses that seek to explain breeding strategies of the Louisiana Waterthrush (Parkesia motacilla) that vary across a latitudinal gradient. On the basis of data from 418 nests of color-banded individuals in southwestern Pennsylvania and 700 km south in the Georgia Piedmont, we found that clutch size in replacement...
Estimating basin scale evapotranspiration (ET) by water balance and remote sensing methods
G.B. Senay, S. Leake, P.L. Nagler, G. Artan, J. Dickinson, J.T. Cordova, E. P. Glenn
2011, Hydrological Processes (25) 4037-4049
Evapotranspiration (ET) is an important hydrological process that can be studied and estimated at multiple spatial scales ranging from a leaf to a river basin. We present a review of methods in estimating basin scale ET and its applications in understanding basin water balance dynamics. The review focuses on two...
Building transparent data access for ocean observatories: Coordination of U.S. IOOS DMAC with NSF's OOI Cyberinfrastructure
M. Arrott, Corrine Alexander, J. Graybeal, C. Mueller, R. Signell, J. de La Beaujardière, A. Taylor, J. Wilkin, B. Powell, J. Orcutt
2011, Conference Paper, OCEANS'11 - MTS/IEEE Kona, Program Book
The NOAA-led U.S. Integrated Ocean Observing System (IOOS) and the National Science Foundation's Ocean Observatories Initiative (OOI) have been collaborating since 2007 on advanced tools and technologies that ensure open access to ocean observations and models. Initial collaboration focused on serving ocean data via cloud computing-a key component of the...
Chronic toxicity of erythromycin thiocyanate to Daphnia magna in a flow-through, continuous exposure test system
J.R. Meinertz, Theresa M. Schreier, J.A. Bernardy
2011, Bulletin of Environmental Contamination and Toxicology (87) 621-625
Approval of a new animal drug application for AQUAMYCIN 100® (erythromycin thiocyanate; ET) to treat freshwater salmonid species with bacterial kidney disease is being pursued in the US. As part of the approval process, ET’s impact on an aquatic environment had to be described in an environmental assessment. The environmental assessment...
Egg size matching by an intraspecific brood parasite
Patrick R. Lemons, James S. Sedinger
2011, Behavioral Ecology (22) 696-700
Avian brood parasitism provides an ideal system with which to understand animal recognition and its affect on fitness. This phenomenon of laying eggs in the nests of other individuals has classically been framed from the perspective of interspecific brood parasitism and host recognition of parasitic eggs. Few examples exist of...
Effects of stop-level habitat change on cerulean warbler detections along breeding bird survey routes in the central appalachians
Patrick M. McElhone, Petra B. Wood, Deanna K. Dawson
2011, Wilson Journal of Ornithology (123) 699-708
- We examined the effects of habitat change on Cerulean Warbler ( Dendroica cerulea) populations at stops along Breeding Bird Survey (BBS) routes in the central Appalachians. We used aerial photographs to compare early (1967/1971), middle (1982/1985), and late (2000/2003) periods and compared 1992 and 2001 National Land Cover...
Standardized North American marsh bird monitoring protocol
Courtney J. Conway
2011, Waterbirds (34) 319-346
Little is known about the population status of many marsh-dependent birds in North America but recent efforts have focused on collecting more reliable information and estimates of population trends. As part of that effort, a standardized survey protocol was developed in 1999 that provided guidance for conducting marsh bird surveys...
A data-driven approach for modeling post-fire debris-flow volumes and their uncertainty
Michael J. Friedel
2011, Environmental Modelling and Software (26) 1583-1598
This study demonstrates the novel application of genetic programming to evolve nonlinear post-fire debris-flow volume equations from variables associated with a data-driven conceptual model of the western United States. The search space is constrained using a multi-component objective function that simultaneously minimizes root-mean squared and unit errors for the evolution...
Influence of landscape characteristics on migration strategies of white-tailed deer
T.W. Grovenburg, C.N. Jacques, R. W. Klaver, C.S. Deperno, T.J. Brinkman, C. C. Swanson, J.A. Jenks
2011, Journal of Mammalogy (92) 534-543
A trade-off exists for migrating animals as to whether to migrate or remain residents. Few studies have documented relationships between landscape variables and deer migration strategies. From 2000 to 2007 we captured 267 adult female white-tailed deer (Odocoileus virginianus) at 7 study sites in Minnesota and South Dakota and monitored...
Hydrologic response of catchments to precipitation: Quantification of mechanical carriers and origins of water
Y.-J. Park, E.A. Sudicky, A.E. Brookfield, J.P. Jones
2011, Water Resources Research (47)
Precipitation-induced overland and groundwater flow and mixing processes are quantified to analyze the temporal (event and pre-event water) and spatial (groundwater discharge and overland runoff) origins of water entering a stream. Using a distributed-parameter control volume finite-element simulator that can simultaneously solve the fully coupled partial differential equations describing 2-D...
The importance of warm season warming to western U.S. streamflow changes
T. Das, D.W. Pierce, D.R. Cayan, J.A. Vano, D.P. Lettenmaier
2011, Geophysical Research Letters (38)
Warm season climate warming will be a key driver of annual streamflow changes in four major river basins of the western U.S., as shown by hydrological model simulations using fixed precipitation and idealized seasonal temperature changes based on climate projections with SRES A2 forcing. Warm season (April-September) warming reduces streamflow...
The distribution and abundance of a nuisance native alga, Didymosphen Didymosphenia geminata, in streams of Glacier National Park: Climate drivers and management implications
Schweiger E. William, I.W. Ashton, C.C. Muhlfeld, L.A. Jones, L.L. Bahls
2011, Park Science (28)
Didymosphenia geminata (didymo) is a freshwater alga native to North America, including Glacier National Park, Montana. It has long been considered a cold-water species, but has recently spread to lower latitudes and warmer waters, and increasingly forms large blooms that cover streambeds. We used a comprehensive monitoring data set from...
