Status and conservation of the fish fauna of the Alabama River system
Mary C. Freeman, E.R. Irwin, N.M. Burkhead, B. J. Freeman, H.L. Bart Jr.
2005, American Fisheries Society Symposium (2005) 557-585
The Alabama River system, comprising the Alabama, Coosa, and Tallapoosa subsystems, forms the eastern portion of the Mobile River drainage. Physiographic diversity and geologic history have fostered development in the Alabama River system of globally significant levels of aquatic faunal diversity and endemism. At least 184 fishes are native to...
THEMIS VIS and IR observations of a high-altitude Martian dust devil
Glen Cushing, Timothy N. Titus, Phillip R. Christensen
2005, Geophysical Research Letters (32) 1-3
The Mars Odyssey Thermal Emission Imaging System (THEMIS) imaged a Martian dust devil in both visible and thermal-infrared wavelengths on January 30, 2004. We believe this is the first documented infrared observation of an extraterrestrial dust devil, and the highest to be directly observed at more than 16 kilometers above...
Macropolygon morphology, development, and classification on North Panamint and Eureka playas, Death Valley National Park CA
P. Messina, P. Stoffer, W. C. Smith
2005, Earth-Science Reviews (73) 309-322
Panamint and Eureka playas, both located within Death Valley National Park, exhibit a host of surficial features including fissures, pits, mounds, and plant-covered ridges, representing topographic highs and lows that vary up to 2 m of relief from the playa surface. Aerial photographs reveal that these linear strands often converge...
Historical and current perspectives on fish assemblages of the Snake River, Idaho and Wyoming
T.R. Maret, C.A. Mebane
2005, American Fisheries Society Symposium (2005) 41-59
The Snake River is the tenth longest river in the United States, extending 1,667 km from its origin in Yellowstone National Park in western Wyoming to its union with the Columbia River at Pasco, Washington. Historically, the main-stem Snake River upstream from the Hells Canyon Complex supported at least 26...
Behavior of amphibians on the road in response to car traffic
M. J. Mazerolle, M. Huot, M. Gravel
2005, Herpetologica (61) 380-388
Nocturnal car traffic often results in amphibian casualties, especially during rainy nights. The behavior of amphibians presumably influences their vulnerability to mortality on the road, but this hypothesis remains untested. We investigated the behavioral response of individuals of six species of amphibians on roads when confronted by an approaching vehicle....
Holocene and latest Pleistocene oblique dextral faulting on the southern Inyo Mountains fault, Owens Lake basin, California
S.N. Bacon, A. S. Jayko, J. P. McGeehin
2005, Bulletin of the Seismological Society of America (95) 2472-2485
The Inyo Mountains fault (IMF) is a more or less continuous range-front fault system, with discontinuous late Quaternary activity, at the western base of the Inyo Mountains in Owens Valley, California. The southern section of the IMF trends ???N20??-40?? W for at least 12 km at the base of and...
Detection of Helicobacter pylori and fecal indicator bacteria in five North American rivers.
Mary A. Voytek, J. B. Ashen, Julie D. Kirshtein, Edward R. Landa, Lisa Reynolds Fogarty
2005, Journal of Water and Health (3) 405-422
This study examines the use of fecal indicator bacteria (FIB) as a predictor of the presence of Helicobacter spp. A combination of standard culture and molecular techniques were used to detect and quantify FIB, Helicobacter spp. and H. pylori from five North American rivers of different size and with different land use characteristics. Primers designed to...
Fish assemblage responses to urban intensity gradients in contrasting metropolitan areas: Birmingham, Alabama and Boston, Massachusetts
M. R. Meador, J.F. Coles, H. Zappia
2005, American Fisheries Society Symposium (2005) 409-423
We examined fish assemblage responses to urban intensify gradients in two contrasting metropolitan areas: Birmingham, Alabama (BIR) and Boston, Massachusetts (BOS). Urbanization was quantified by using an urban intensity index (UII) that included multiple stream buffers and basin land uses, human population density, and road density variables. We evaluated fish...
An updated global earthquake catalogue for stable continental regions: Reassessing the correlation with ancient rifts
S.M. Schulte, Walter D. Mooney
2005, Geophysical Journal International (161) 707-721
We present an updated global earthquake catalogue for stable continental regions (SCRs; i.e. intraplate earthquakes) that is available on the Internet. Our database contains information on location, magnitude, seismic moment and focal mechanisms for over 1300 M (moment magnitude) ≥ 4.5 historic and instrumentally recorded crustal events. Using this updated earthquake database...
Modeling effects of bank friction and woody bank vegetation on channel flow and boundary shear stress in the Rio Puerco, New Mexico
E.R. Griffin, J. W. Kean, K.R. Vincent, J.D. Smith, Jonathan M. Friedman
2005, Journal of Geophysical Research F: Earth Surface (110)
[1] We have applied a physically based model for steady, horizontally uniform flow to calculate reach-averaged velocity and boundary shear-stress distributions in a natural stream with woody vegetation on the channel banks. The model calculates explicitly the form drag on woody plant stems and includes the effects of vegetation on...
Variation in mangrove forest structure and sediment characteristics in Bocas del Toro, Panama
C. E. Lovelock, Ilka C. Feller, K.L. McKee, R. Thompson
2005, Caribbean Journal of Science (41) 456-464
Mangrove forest structure and sediment characteristics were examined in the extensive mangroves of Bocas del Toro, Republic of Panama. Forest structure was characterized to determine if spatial vegetation patterns were repeated over the Bocas del Toro landscape. Using a series of permanent plots and transects we found that the forests...
DEM, tide and velocity over sulzberger ice shelf, West Antarctica
S. Baek, C. K. Shum, H. Lee, Y. Yi, Oh-Ig Kwoun, Z. Lu, Andreas Braun
2005, Conference Paper, International Geoscience and Remote Sensing Symposium (IGARSS) proceedings
Arctic and Antarctic ice sheets preserve more than 77% of the global fresh water and could raise global sea level by several meters if completely melted. Ocean tides near and under ice shelves shifts the grounding line position significantly and are one of current limitations to study glacier dynamics and...
Effects of urbanization on the distribution and abundance of amphibians and invasive species in southern California streams
S.P.D. Riley, G.T. Busteed, L.B. Kats, T.L. Vandergon, L.F.S. Lee, R.G. Dagit, J.L. Kerby, Robert N. Fisher, R.M. Sauvajot
2005, Conservation Biology (19) 1894-1907
Urbanization negatively affects natural ecosystems in many ways, and aquatic systems in particular. Urbanization is also cited as one of the potential contributors to recent dramatic declines in amphibian populations. From 2000 to 2002 we determined the distribution and abundance of native amphibians and exotic predators and characterized stream habitat...
Operation and performance of the mars exploration rover imaging system on the martian surface
J.N. Maki, T. Litwin, M. Schwochert, K. Herkenhoff
2005, Conference Paper, Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics
The Imaging System on the Mars Exploration Rovers has successfully operated on the surface of Mars for over one Earth year. The acquisition of hundreds of panoramas and tens of thousands of stereo pairs has enabled the rovers to explore Mars at a level of detail unprecedented in the history...
The wrinkle-like slip pulse is not important in earthquake dynamics
D.J. Andrews, R.A. Harris
2005, Geophysical Research Letters (32) 1-4
A particular solution for slip on an interface between different elastic materials, the wrinkle-like slip pulse, propagates in only one direction with reduced normal compressive stress. More general solutions, and natural earthquakes, need not share those properties. In a 3D dynamic model with a drop in friction and heterogeneous initial...
An onboard data analysis method to track the seasonal polar caps on Mars
K.L. Wagstaff, R. Castano, S. Chien, A.B. Ivanov, E. Pounders, T.N. Titus
Battrick B., editor(s)
2005, European Space Agency, (Special Publication) ESA SP 265-272
The Martian seasonal CO2 ice caps advance and retreat each year. They are currently studied using instruments such as the THermal EMission Imaging System (THEMIS), a visible and infra-red camera on the Mars Odyssey spacecraft [1]. However, each image must be downlinked to Earth prior to analysis. In contrast, we...
Nature's style: Naturally trendy
T.A. Cohn, H.F. Lins
2005, Geophysical Research Letters (32) 1-5
Hydroclimatological time series often exhibit trends. While trend magnitude can be determined with little ambiguity, the corresponding statistical significance, sometimes cited to bolster scientific and political argument, is less certain because significance depends critically on the null hypothesis which in turn reflects subjective notions about what one expects to see....
Demographics of an ornate box turtle population experiencing minimal human-induced disturbances
S. J. Converse, J. B. Iverson, J. A. Savidge
2005, Ecological Applications (15) 2171-2179
Human-induced disturbances may threaten the viability of many turtle populations, including populations of North American box turtles. Evaluation of the potential impacts of these disturbances can be aided by long-term studies of populations subject to minimal human activity. In such a population of ornate box turtles (Terrapene ornata ornata) in...
Gas geochemistry of a shallow submarine hydrothermal vent associated with the El Requesón fault zone, Bahía Concepción, Baja California Sur, México
Matthew J. Forrest, Jorge Ledesma-Vazquez, William Ussler III, Justin T. Kulongoski, David R. Hilton, H. Gary Greene
2005, Chemical Geology (224) 82-95
We investigated hydrothermal gas venting associated with a coastal fault zone along the western margin of Bahía Concepción, B.C.S., México. Copious discharge of geothermal liquid (≈ 90 °C) and gas is occurring in the intertidal and shallow subtidal zones (to a depth of 13 m) through soft sediments and fractures in...
Mark-resight superpopulation estimation of a wintering elk Cervus elaphus canadensis herd
William R. Gould, S. T. Smallidge, Bruce C. Thompson
2005, Wildlife Biology (11) 341-349
We executed four mark-resight helicopter surveys during the winter months January–February for each of the three years 1999–2001 at 7–10 day intervals to estimate population size of a wintering elk Cervus elaphus canadensis herd in northern New Mexico. We counted numbers of radio-collared and uncollared elk on a simple random sample...
Recent U.S. Geological Survey applications of Lidar
Vivian R. Queija, Jason M. Stoker, John J. Kosovich
2005, Photogrammetric Engineering and Remote Sensing (71) 5-9
As lidar (light detection and ranging) technology matures, more applications are being explored by U.S. Geological Survey (USGS) scientists throughout the Nation, both in collaboration with other Federal agencies and alone in support of USGS natural-hazards research (Crane et al., 2004). As the technology continues to improve and evolve, USGS...
Rural land-use trends in the conterminous United States, 1950-2000
Daniel G. Brown, Kenneth M. Johnson, Thomas R. Loveland, David M. Theobald
2005, Ecological Applications (15) 1851-1863
In order to understand the magnitude, direction, and geographic distribution of land-use changes, we evaluated land-use trends in U.S. counties during the latter half of the 20th century. Our paper synthesizes the dominant spatial and temporal trends in population, agriculture, and urbanized land uses, using a variety of data sources...
Crossing the ultimate ecological barrier: Evidence for an 11,000-km-long non-stop flight from Alaska to New Zealand and Eastern Australia by Bar-tailed Godwits
Robert E. Gill Jr., Theunis Piersma, Gary Hufford, R. Servranckx, Adrian C. Riegen
2005, The Condor (107) 1-20
Populations of the Bar-tailed Godwit (Limosa lapponica; Scolopacidae) embark on some of the longest migrations known among birds. The baueri race breeds in western Alaska and spends the nonbreeding season a hemisphere away in New Zealand and eastern Australia; the menzbieri race breeds in Siberia and migrates to western and northern Australia. Although the...
Alaskan brown bears, humans, and habituation
Thomas Smith, Stephen Herrero, Terry D. DeBruyn
2005, Ursus (16) 1-10
We present a new paradigm for understanding habituation and the role it plays in brown bear (Ursus arctos) populations and interactions with humans in Alaska. We assert that 3 forms of habituation occur in Alaska: bear-to-bear, bear-to-human, and human-to-bear. We present data that supports our theory that bear density is...
Polar climate: Arctic sea ice
R. S. Stone, David C. Douglas, G. I. Belchansky, S. D. Drobot
2005, Bulletin of the American Meteorological Society (86) S39-S41
Recent decreases in snow and sea ice cover in the high northern latitudes are among the most notable indicators of climate change. Northern Hemisphere sea ice extent for the year as a whole was the third lowest on record dating back to 1973, behind 1995 (lowest) and 1990 (second lowest;...
