Uncertainty in georeferencing current and historic plant locations
K. McEachern, K. Niessen
2009, Ecological Restoration (27) 152-159
With shrinking habitats, weed invasions, and climate change, repeated surveys are becoming increasingly important for rare plant conservation and ecological restoration. We often need to relocate historical sites or provide locations for newly restored sites. Georeferencing is the technique of giving geographic coordinates to the location of a site. Georeferencing...
Long-term pair bonds in the Laysan Duck
M.H. Reynolds, J.H. Breeden Jr., M.S. Vekasy, T.M. Ellis
2009, Wilson Journal of Ornithology (121) 187-190
We describe long-term pair bonds in the endangered Laysan Duck (Anas laysanensis), a dabbling duck endemic to the Hawaiian Archipelago. Individually marked birds were identified on Laysan Island between 1998 and 2006 (n = 613 marked adults). We recorded pair bonds while observing marked birds, and documented within and between...
Identifying and prioritizing ungulate migration routes for landscape-level conservation
H. Sawyer, M. J. Kauffman, R. M. Nielson, J. S. Horne
2009, Ecological Applications (19) 2016-2025
As habitat loss and fragmentation increase across ungulate ranges, identifying and prioritizing migration routes for conservation has taken on new urgency. Here we present a general framework using the Brownian bridge movement model (BBMM) that: (1) provides a probabilistic estimate of the migration routes of a sampled population, (2) distinguishes...
Joint inversion for Vp, Vs, and Vp/Vs at SAFOD, Parkfield, California
H. Zhang, C. Thurber, P. Bedrosian
2009, Geochemistry, Geophysics, Geosystems (10)
We refined the three-dimensional (3-D) Vp, Vs and Vp/Vs models around the San Andreas Fault Observatory at Depth (SAFOD) site using a new double-difference (DD) seismic tomography code (tomoDDPS) that simultaneously solves for earthquake locations and all three velocity models using both absolute and differential P, S, and S-P times....
Assessment of water quality trends in the Minnesota River using non-parametric and parametric methods
H.O. Johnson, S.C. Gupta, A. V. Vecchia, F. Zvomuya
2009, Journal of Environmental Quality (38) 1018-1030
Excessive loading of sediment and nutrients to rivers is a major problem in many parts of the United States. In this study, we tested the non-parametric Seasonal Kendall (SEAKEN) trend model and the parametric USGS Quality of Water trend program (QWTREND) to quantify trends in water quality of the Minnesota...
Stratigraphic framework and estuarine depositional environments of the Miocene Bear Lake Formation, Bristol Bay Basin, Alaska: Onshore equivalents to potential reservoir strata in a frontier gas-rich basin
E.S. Finzel, K.D. Ridgway, R.R. Reifenstuhl, R. B. Blodgett, J. M. White, P.L. Decker
2009, American Association of Petroleum Geologists Bulletin (93) 379-405
The Miocene Bear Lake Formation is exposed along the coast and mountains of the central Alaska Peninsula and extends offshore as part of the Bristol Bay Basin. The Bear Lake Formation is up to 2360 m (7743 ft) thick in an offshore well and is considered to have the highest...
The effect of Hurricane Katrina on nekton communities in the tidal freshwater marshes of Breton Sound, Louisiana, USA
Bryan P. Piazza, M.K. La Peyre
2009, Estuarine, Coastal and Shelf Science (83) 97-104
Hurricanes are climatically-induced resource pulses that affect community structure through the combination of physical and chemical habitat change. Estuaries are susceptible to hurricane pulses and are thought to be resilient to habitat change, because biotic communities often return quickly to pre-hurricane conditions. Although several examples provide evidence of quick recovery...
Effects of experimental water table and temperature manipulations on ecosystem CO2 fluxes in an Alaskan rich fen
M.R. Chivers, M.R. Turetsky, J. M. Waddington, J.W. Harden, A. D. McGuire
2009, Ecosystems (12) 1329-1342
Peatlands store 30% of the world's terrestrial soil carbon (C) and those located at northern latitudes are expected to experience rapid climate warming. We monitored growing season carbon dioxide (CO2) fluxes across a factorial design of in situ water table (control, drought, and flooded plots) and soil warming (control vs....
Rodents new to the diet of the western burrowing owl(athene CUNICULARIA HYPUGAEA )
D.L. Wiluford, M.C. Woodin, M.K. Skoruppa, G.C. Hickman
2009, Southwestern Naturalist (54) 87-90
The northern pygmy mouse (Baiomys taylori), fulvous harvest mouse (Reithrodontomys fulvescens), and Merriam's pocket mouse (Pemgnathus merriami) are new to the diet of the western burrowing owl (Athene cuniculana hypugaed). All three species were identified from remains in regurgitated pellets collected from roost sites of burrowing owls in southern Texas...
TreeMAC: Localized TDMA MAC protocol for real-time high-data-rate sensor networks
W.-Z. Song, R. Huang, B. Shirazi, R. LaHusen
2009, Pervasive and Mobile Computing (5) 750-765
Earlier sensor network MAC protocols focus on energy conservation in low-duty cycle applications, while some recent applications involve real-time high-data-rate signals. This motivates us to design an innovative localized TDMA MAC protocol to achieve high throughput and low congestion in data collection sensor networks, besides energy conservation. TreeMAC divides a...
Seasonal shifts in shelter and microhabitat use of drymarchon couperi (eastern indigo snake) in Georgia
N.L. Hyslop, R.J. Cooper, J.M. Meyers
2009, Copeia (2009) 458-464
Drymarchon couperi (Eastern Indigo Snake), a threatened species of the southeastern Coastal Plain of the United States, has experienced population declines because of extensive habitat loss and degradation across its range. In Georgia and northern Florida, the species is associated with longleaf pine habitats that support Gopherus polyphemus (Gopher Tortoise)...
Eukaryotic viruses in wastewater samples from the United States
E.M. Symonds, Dale W. Griffin, M. Breitbart
2009, Applied and Environmental Microbiology (75) 1402-1409
Human fecal matter contains a large number of viruses, and current bacterial indicators used for monitoring water quality do not correlate with the presence of pathogenic viruses. Adenoviruses and enteroviruses have often been used to identify fecal pollution in the environment; however, other viruses shed in fecal matter may more...
Consistency between hydrological models and field observations: Linking processes at the hillslope scale to hydrological responses at the watershed scale
M.P. Clark, D.E. Rupp, R.A. Woods, Meerveld H. J. Tromp-van H. J., N.E. Peters, J.E. Freer
2009, Hydrological Processes (23) 311-319
The purpose of this paper is to identify simple connections between observations of hydrological processes at the hillslope scale and observations of the response of watersheds following rainfall, with a view to building a parsimonious model of catchment processes. The focus is on the well-studied Panola Mountain Research Watershed (PMRW),...
NOAA/West coast and Alaska Tsunami warning center Atlantic Ocean response criteria
P. Whitmore, C. Refidaff, M. Caropolo, V. Huerfano-Moreno, W. Knight, W. Sammler, A. Sandrik
2009, Science of Tsunami Hazards (28) 86-107
West Coast/Alaska Tsunami Warning Center (WCATWC) response criteria for earthquakesoccurring in the Atlantic and Caribbean basins are presented. Initial warning center decisions are based on an earthquake's location, magnitude, depth, distance from coastal locations, and precomputed threat estimates based on tsunami models computed from similar events. The new criteria will...
Deep-sea ostracods from the South Atlantic sector of the Southern ocean during the Last 370,000 years
Moriaki Yasuhara, T. M. Cronin, G. Hunt, D.A. Hodell
2009, Journal of Paleontology (83) 914-930
We report changes of deep-sea ostracod fauna during the last 370,000 yr from the Ocean Drilling Program (ODP) Hole 704A in the South Atlantic sector of the Southern Ocean. The results show that faunal changes are coincident with glacial/interglacial-scale deep-water circulation changes, even though our dataset is relatively small and...
VIMS spectral mapping observations of Titan during the Cassini prime mission
J. W. Barnes, J.M. Soderblom, R. H. Brown, B. J. Buratti, Christophe Sotin, K. H. Baines, R. N. Clark, R. Jaumann, T. B. McCord, R. Nelson, Stéphane Le Mouélic, S. Rodriguez, C. Griffith, P. Penteado, F. Tosi, K.M. Pitman, L. Soderblom, K. Stephan, P. Hayne, G. Vixie, J.-P. Bibring, G. Bellucci, F. Capaccioni, P. Cerroni, A. Coradini, D. P. Cruikshank, P. Drossart, V. Formisano, Y. Langevin, D. L. Matson, P. D. Nicholson, B. Sicardy
2009, Planetary and Space Science (57) 1950-1962
This is a data paper designed to facilitate the use of and comparisons to Cassini/visual and infrared mapping spectrometer (VIMS) spectral mapping data of Saturn's moon Titan. We present thumbnail orthographic projections of flyby mosaics from each Titan encounter during the Cassini prime mission, 2004 July 1 through 2008 June...
Estimation of the tectonic slip-rate from Quaternary lacustrine facies within the intraplate Albacete province (SE of Spain)
M. A. Rodriguez-Pascua, J. Bischoff, Victor H. Garduno-Monroy, R. Perez-Lopez, J. L. Giner-Robles, I. Israde-Alcántara, J. P. Calvo, Ross W. Williams
2009, Sedimentary Geology (222) 89-97
The Quaternary lacustrine basin of Cordovilla (CB) represents one of the most active tectonic areas of the Prebetic Zone (Albacete, SE of Spain). The Quaternary sedimentary deposits of this basin are mainly endoreic lacustrine carbonate and alluvial deposits, developed in a semi-arid climate (Pleistocene-present). The basin is a NW-SE-elongated graben...
Developing framework to constrain the geometry of the seismic rupture plane on subduction interfaces a priori - A probabilistic approach
G.P. Hayes, D.J. Wald
2009, Geophysical Journal International (176) 951-964
A key step in many earthquake source inversions requires knowledge of the geometry of the fault surface on which the earthquake occurred. Our knowledge of this surface is often uncertain, however, and as a result fault geometry misinterpretation can map into significant error in the final temporal and spatial slip...
Climate, lightning ignitions, and fire severity in Yosemite National Park, California, USA
J.A. Lutz, J. W. van Wagtendonk, A. E. Thode, J.D. Miller, J.F. Franklin
2009, International Journal of Wildland Fire (18) 765-774
Continental-scale studies of western North America have attributed recent increases in annual area burned and fire size to a warming climate, but these studies have focussed on large fires and have left the issues of fire severity and ignition frequency unaddressed. Lightning ignitions, any of which could burn a large...
Rupture parameters of the 2003 Zemmouri (Mw 6.8), Algeria, earthquake from joint inversion of interferometric synthetic aperture radar, coastal uplift, and GPS
S. Belabbes, Charles Wicks, Z. Cakir, M. Meghraoui
2009, Journal of Geophysical Research F: Earth Surface (114)
We study the surface deformation associated with the 21 May 2003 (M w = 6.8) Zemmouri (Algeria) earthquake, the strongest seismic event felt in the Algiers region since 1716. The thrust earthquake mechanism and related surface deformation revealed an average 0.50 m coastal uplift along ??55-km-long coastline. We obtain coseismic...
Phosphorus fractionation in sediment cores collected in 2005 before and after onset of an Aphanizomenon flos-aquae bloom in upper Klamath Lake, OR, USA
N.S. Simon, D. Lynch, T.N. Gallaher
2009, Water, Air, & Soil Pollution (204) 139-153
We tested the hypothesis that there would be measurable losses of phosphorus (P) from surficial sediments of Upper Klamath Lake (UKL), Oregon, if sediments were a source of P during an algal bloom. We compared concentrations of total and forms of P at various depths in cores collected before and...
The impact of climate change on transportation in the gulf coast
M.J. Savonis, V.R. Burkett, J.R. Potter, R. Kafalenos, R. Hyman, K. Leonard
2009, Conference Paper, TCLEE 2009: Lifeline Earthquake Engineering in a Multihazard Environment
Climate affects the design, construction, safety, operations, and maintenance of transportation infrastructure and systems. The prospect of a changing climate raises critical questions regarding how alterations in temperature, precipitation, storm events, and other aspects of the climate could affect the nation's transportation system. This regional assessment of climate change and...
Compact Reconnaissance Imaging Spectrometer for Mars investigation and data set from the Mars Reconnaissance Orbiter's primary science phase
S.L. Murchie, F.P. Seelos, C.D. Hash, D.C. Humm, E. Malaret, J.A. McGovern, T.H. Choo, K.D. Seelos, D.L. Buczkowski, M.F. Morgan, O. S. Barnouin-Jha, H. Nair, H.W. Taylor, G.W. Patterson, C.A. Harvel, J.F. Mustard, R. E. Arvidson, P. McGuire, M. D. Smith, M.J. Wolff, T.N. Titus, J.-P. Bibring, F. Poulet
2009, Journal of Geophysical Research E: Planets (114)
The part of the Compact Reconnaissance Imaging Spectrometer (CRISM) for Mars investigation conducted during the Mars Reconnaissance Orbiter's (MRO's) primary science phase was a comprehensive investigation of past aqueous environments, structure of the planet's crust, past climate, and current meteorology. The measurements to implement this investigation include over 9500 targeted...
Possible deep fault slip preceding the 2004 Parkfield earthquake, inferred from detailed observations of tectonic tremor
David R. Shelly
2009, Geophysical Research Letters (36) 1-6
Earthquake predictability depends, in part, on the degree to which sudden slip is preceded by slow aseismic slip. Recently, observations of deep tremor have enabled inferences of deep slow slip even when detection by other means is not possible, but these data are limited to certain areas and mostly the...
Spatial and temporal distributions of Martian north polar cold spots before, during, and after the global dust storm of 2001
C. Cornwall, T.N. Titus
2009, Journal of Geophysical Research E: Planets (114)
In the 1970s, Mariner and Viking observed features in the Mars northern polar region that were a few hundred kilometers in diameter with 20 fj,m brightness temperatures as low as 130 K (considerably below C02 ice sublimation temperatures). Over the past decade, studies have shown that these areas (commonly called...
