Optically stimulated luminescence dating of aeolian sand in the otindag dune field and holocene climate change
Y.L. Zhou, H.Y. Lu, J. Mason, X.D. Miao, J. Swinehart, R. Goble
2008, Science in China, Series D: Earth Sciences (51) 837-847
The dune system in Otindag sand field of northern China is sensitive to climate change, where effective moisture and related vegetation cover play a controlling role for dune activity and stability. Therefore, aeolian deposits may be an archive of past environmental changes, possibly at the millennial scale, but previous studies...
Tracking the Archean-Proterozoic suture zone in the northeastern Great Basin, Nevada and Utah
B. D. Rodriguez, J. M. Williams
2008, Geosphere (4) 315-328
It is important to know whether major mining districts in north-central Nevada are underlain by crust of the Archean Wyoming craton, known to contain major orogenic gold deposits or, alternatively, by accreted crust of the Paleoproterozoic Mojave province. Determining the location and orientation of the Archean-Proterozoic suture zone between these...
Habitat use and movement patterns by adult saugers from fall to summer in an unimpounded small-river system
K.M. Kuhn, W.A. Hubert, Kevin Johnson, D. Oberlie, D. Dufek
2008, North American Journal of Fisheries Management (28) 360-367
The Little Wind River drainage in Wyoming is a relatively small unimpounded river system inhabited by native saugers Sander canadensis. Radio telemetry was used to assess habitat use and movement patterns by adult saugers in the river system from fall through early summer. Fifty-four adult saugers were captured during fall...
Secrets in the eyes of Black Oystercatchers: A new sexing technique
Brian M. Guzzetti, Sandra L. Talbot, David F. Tessler, Verena A. Gill, Edward C. Murphy
2008, Journal of Field Ornithology (79) 215-223
Sexing oystercatchers in the field is difficult because males and females have identical plumage and are similar in size. Although Black Oystercatchers (Haematopus bachmani) are sexually dimorphic, using morphology to determine sex requires either capturing both pair members for comparison or using discriminant analyses to assign sex probabilistically based on...
Hepatic heat shock protein 70 and plasma cortisol levels in rainbow trout after tagging with a passive integrated transponder
J.W. Feldhaus, S.A. Heppell, M.G. Mesa, H. Li
2008, Transactions of the American Fisheries Society (137) 690-695
This study examined the potentially stressful effects of tagging juvenile rainbow trout Oncorhynchus mykiss with passive integrated transponder (PIT) tags by measuring short-term (<120-h) changes in plasma concentrations of cortisol and hepatic heat shock protein 70 (hsp70). In a laboratory experiment, plasma cortisol levels were measured in fish before they...
Human-induced changes in the hydrology of the Western United States
T.P. Barnett, D.W. Pierce, H.G. Hidalgo, Celine Bonfils, B.D. Santer, T. Das, G. Bala, A.W. Wood, T. Nozawa, A.A. Mirin, D.R. Cayan, M. D. Dettinger
2008, Science (319) 1080-1083
Observations have shown that the hydrological cycle of the western United States changed significantly over the last half of the 20th century. We present a regional, multivariable climate change detection and attribution study, using a high-resolution hydrologic model forced by global climate models, focusing on the changes that have already...
Oxygen isotope geochemistry of the lassen volcanic center, California: Resolving crustal and mantle contributions to continental Arc magmatism
T.C. Feeley, M.A. Clynne, G.S. Winer, W.C. Grice
2008, Journal of Petrology (49) 971-997
This study reports oxygen isotope ratios determined by laser fluorination of mineral separates (mainly plagioclase) from basaltic andesitic to rhyolitic composition volcanic rocks erupted from the Lassen Volcanic Center (LVC), northern California. Plagioclase separates from nearly all rocks have δ18O values (6·1–8·4‰) higher than expected for production of the magmas...
Use of a 15 k gene microarray to determine gene expression changes in response to acute and chronic methylmercury exposure in the fathead minnow Pimephales promelas Rafinesque
R. Klaper, Barbara J. Carter, C.A. Richter, P.E. Drevnick, M.B. Sandheinrich, D. E. Tillitt
2008, Journal of Fish Biology (72) 2207-2280
This study describes the use of a 15 000 gene microarray developed for the toxicological model species, Pimephales promelas, in investigating the impact of acute and chronic methylmercury exposures in male gonad and liver tissues. The results show significant differences in the individual genes that were differentially expressed in response...
Short-term monitoring of aridland lichen cover and biomass using photography and fatty acids
M. A. Bowker, N.C. Johnson, J. Belnap, G.W. Koch
2008, Journal of Arid Environments (72) 869-878
Biological soil crust (BSC) communities (composed of lichens, bryophytes, and cyanobacteria) may be more dynamic on short-time scales than previously thought, requiring new and informative short-term monitoring techniques. We used repeat digital photography and image analysis, which revealed a change in area of a dominant BSC lichen, Collema tenax. The...
Efficacy of oxytetracycline hydrochloride bath immersion to control external columnaris disease on walleye and channel catfish fingerlings
J.J. Rach, Aaron H. Johnson, J.B. Rudacille, S.M. Schleis
2008, North American Journal of Aquaculture (70) 459-465
The efficacy of oxytetracycline hydrochloride (OTC-HCl) in controlling external columnaris disease caused by Flavobacterium columnare on fingerling walleyes Sander vitreus and channel catfish Ictalurus punctatus was evaluated in two on-site hatchery trials. Microscopic examination of skin scrapings before treatment confirmed the presence of bacteria with characteristics indicative of F. columnare.in...
Age-class structure and variability of two populations of the bluemask darter etheostoma (Doration) sp.
J.W. Simmons, James B. Layzer, D.D. Smith
2008, American Midland Naturalist (160) 300-309
The bluemask darter Etheostoma (Doration) sp. is an endangered fish endemic to the upper Caney Fork system in the Cumberland River drainage in central Tennessee. Darters (Etheostoma spp.) are typically short-lived and exhibit rapid growth that quickly decreases with age. Consequently, estimating age of darters from length-frequency distributions can be...
Phylum Nematoda
A. Choudhury, Rebecca A. Cole
J. Eiras, Helmut E. Segner, Thomas Wahli, editor(s)
2008, Book chapter, Fish Diseases
No abstract available....
Fish Rhabdoviruses
Gael Kurath, J. Winton
2008, Book chapter, Encyclopedia of Virology
Many important viral pathogens of fish are members of the family Rhabdoviridae. The viruses in this large group cause significant losses in populations of wild fish as well as among fish reared in aquaculture. Fish rhabdoviruses often have a wide host and geographic range, and infect aquatic animals in both freshwater...
Regional groundwater flow in mountainous terrain: Three‐dimensional simulations of topographic and hydrogeologic controls
Tom Gleeson, Andrew H. Manning
2008, Water Resources Research (44)
This study uses numerical simulations to define the salient controls on regional groundwater flow in 3‐D mountainous terrain by systematically varying topographic and hydrogeologic variables. Topography for idealized multiple‐basin mountainous terrain is derived from geomatic data and literature values. Water table elevation, controlled by the ratio of...
Space use by Forster's Terns breeding in South San Francisco Bay
J. Bluso-Demers, M. A. Colwell, John Y. Takekawa, Joshua T. Ackerman
2008, Waterbirds (31) 357-364
Parental care behaviors often differ in dimorphic seabirds, leading to sex-specific differences in foraging behaviors. However, few studies have examined sex-specific foraging behaviors in monomorphic seabirds. Using radio-telemetry, we studied Forster's Terns (Sterna forsteri) - a monomorphic and socially monogamous seabird - breeding in the South San Francisco Bay, California....
Limited change in dune mobility in response to a large decrease in wind power in semi-arid northern China since the 1970s
J.A. Mason, J. B. Swinehart, H. Lu, X. Miao, P. Cha, Y. Zhou
2008, Geomorphology (102) 351-363
The climatic controls on dune mobility, especially the relative importance of wind strength, remain incompletely understood. This is a key research problem in semi-arid northern China, both for interpreting past dune activity as evidence of paleoclimate and for predicting future environmental change. Potential eolian sand transport, which is approximately proportional...
Application of RHIZON samplers to obtain high-resolution pore-fluid records during geochemical investigations of gas hydrate systems
John W. Pohlman, M Riedel, William F. Waite, K. Rose, L. Lapham
2008, Fire in the Ice: NETL Methane Hydrate Newsletter (8) 16-17
Obtaining accurate, high-resolution profiles of pore fluid constituents is critical for characterizing the subsurface geochemistry of hydrate-bearing sediments. Tightly-constrained downcore profiles provide clues about fluid sources, fluid flow, and the milieu of chemical and diagenetic reactions, all of which are used to interpret where and why gas and gas hydrate...
Transport of water, carbon, and sediment through the Yukon River Basin
Timothy P. Brabets, Paul F. Schuster
2008, Fact Sheet 2008-3005
In 2001, the U.S. Geological Survey (USGS) began a water-quality study of the Yukon River. The Yukon River Basin (YRB), which encompasses 330,000 square miles in northwestern Canada and central Alaska (fig. 1), is one of the largest and most diverse ecosystems in North America. The Yukon River is more...
Climate change and global carbon cycle: Perspectives and opportunities
Carolyn D. Ruppel, John W. Pohlman
2008, Fire in the Ice: NETL Methane Hydrate Newsletter (8) 5-8
The relevance of methane hydrates research to broader societal themes is often framed in terms of methane’s role in the global carbon cycle and its potential contribution to future climate change. To date, investigations of these fundamental issues have remained largely disconnected from applied studies focused on locating natural gas...
Influence of gravel mining and other factors on detection probabilities of Coastal Plain fishes in the Mobile River Basin, Alabama
C.-A. Hayer, E.R. Irwin
2008, Transactions of the American Fisheries Society (137) 1606-1620
We used an information-theoretic approach to examine the variation in detection probabilities for 87 Piedmont and Coastal Plain fishes in relation to instream gravel mining in four Alabama streams of the Mobile River drainage. Biotic and abiotic variables were also included in candidate models. Detection probabilities were heterogeneous across species...
A lightweight sensor network management system design
F. Yuan, W.-Z. Song, N. Peterson, Y. Peng, L. Wang, B. Shirazi, R. LaHusen
2008, Conference Paper, 6th Annual IEEE International Conference on Pervasive Computing and Communications, PerCom 2008
In this paper, we propose a lightweight and transparent management framework for TinyOS sensor networks, called L-SNMS, which minimizes the overhead of management functions, including memory usage overhead, network traffic overhead, and integration overhead. We accomplish this by making L-SNMS virtually transparent to other applications hence requiring minimal integration. The...
Optimized Autonomous Space In-situ Sensor-Web for volcano monitoring
W.-Z. Song, B. Shirazi, S. Kedar, S. Chien, F. Webb, D. Tran, A. Davis, D. Pieri, R. LaHusen, J. Pallister, D. Dzurisin, S. Moran, M. Lisowski
2008, Conference Paper, IEEE Aerospace Conference Proceedings
In response to NASA's announced requirement for Earth hazard monitoring sensor-web technology, a multidisciplinary team involving sensor-network experts (Washington State University), space scientists (JPL), and Earth scientists (USGS Cascade Volcano Observatory (CVO)), is developing a prototype dynamic and scaleable hazard monitoring sensor-web and applying it to volcano monitoring. The combined...
Fish assemblage, density, and growth in lateral habitats within natural and regulated sections of Washington's Elwha River prior to dam removal
P.J. Connolly, S.J. Brenkman
2008, Northwest Science (82) 107-118
We characterized seasonal fish assemblage, relative density, and growth in river margins above and between two Elwha River dams scheduled for removal. Fish assemblage and relative density differed in the lateral habitats of the middle-regulated and upper-unregulated sections of the Elwha River. Rainbow trout was the numerically dominant salmonid in...
Late Neogene marine incursions and the ancestral Gulf of California
K. McDougall
2008, Conference Paper, Special Paper of the Geological Society of America
The late Neogene section in the Salton Trough, California, and along the lower Colorado River in Arizona is composed of marine units bracketed by nonmarine units. Microfossils from the marine deposits indicate that a marine incursion inundated the Salton Trough during the late Miocene. Water depths increased rapidly in the...
Late pleistocene aggradation and degradation of the lower colorado river: Perspectives from the Cottonwood area and other reconnaissance below Boulder Canyon
S.C. Lundstrom, S. A. Mahan, J.B. Paces, M.R. Hudson, P.K. House, D.V. Malmon, J.L. Blair, K. A. Howard
2008, Conference Paper, Special Paper of the Geological Society of America
Where the lower Colorado River traverses the Basin and Range Province below the Grand Canyon, significant late Pleistocene aggradation and subsequent degrada tion of the river are indicated by luminescence, paleomagnetic, and U-series data and stratigraphy. Aggradational, finely bedded reddish mud, clay, and silt are underlain and overlain by cross-bedded...
