Comparison of Bacteroides-Prevotella 16S rRNA genetic markers for fecal samples from different animal species
L.R. Fogarty, M.A. Voytek
2005, Applied and Environmental Microbiology (71) 5999-6007
To effectively manage surface and ground waters it is necessary to improve our ability to detect and identify sources of fecal contamination. We evaluated the use of the anaerobic bacterial group Bacteroides-Prevotella as a potential fecal indicator. Terminal restriction length polymorphism (T-RFLP) of the 16S rRNA genes from this group...
Influence of thinning of Douglas-fir forests on population parameters and diet of northern flying squirrels
D.M. Gomez, R.G. Anthony, J. P. Hayes
2005, Journal of Wildlife Management (69) 1670-1682
We investigated the effects of thinning young (35- to 45-yr-old) Douglas-fir (Pseudotsuga menziesii) forests on density, survival, body mass, movements, and diets of northern flying squirrels (Glaucomys sabrinus) in the northern coast range of Oregon. We used a repeated measures, randomized block design with 3 treatments (control, moderate thinning, and...
Comparison of methods used to estimate conventional undiscovered petroleum resources: World examples
Thomas S. Ahlbrandt, T. R. Klett
2005, Conference Paper, Natural Resources Research
Various methods for assessing undiscovered oil, natural gas, and natural gas liquid resources were compared in support of the USGS World Petroleum Assessment 2000. Discovery process, linear fractal, parabolic fractal, engineering estimates, PETRIMES, Delphi, and the USGS 2000 methods were compared. Three comparisons of these methods were made in: (1)...
Surface energy exchanges along a tundra-forest transition and feedbacks to climate
J. Beringer, F. S. Chapin III, Catharine Copass Thompson, A. D. McGuire
2005, Agricultural and Forest Meteorology (131) 143-161
Surface energy exchanges were measured in a sequence of five sites representing the major vegetation types in the transition from arctic tundra to forest. This is the major transition in vegetation structure in northern high latitudes. We examined the influence of vegetation structure on the rates of sensible heating and...
Evaluating and understanding fish health risks and their consequences in propagated and free-ranging fish populations
C.M. Moffitt, A.H. Haukenes, C.J. Williams
2005, American Fisheries Society Symposium (2005) 529-537
Fishery managers and resource conservationists are increasingly interested in understanding the fish health and disease risks of free-ranging fishes and whether propagated fishes or features and practices used at fish culture facilities pose a health risk to free-ranging populations. Disease agents are present in most both captive and all free-ranging...
Interior channels in Martian valleys: Constraints on fluvial erosion by measurements of the Mars Express High Resolution Stereo Camera
R. Jaumann, D. Reiss, S. Frei, G. Neukum, F. Scholten, K. Gwinner, T. Roatsch, K.-D. Matz, V. Mertens, E. Hauber, H. Hoffmann, U. Kohler, J.W. Head, H. Hiesinger, M. H. Carr
2005, Geophysical Research Letters (32) 1-4
In High Resolution Stereo Camera (HRSC) images of the Mars Express Mission a 130 km long interior channel is identified within a 400 km long valley network system located in the Lybia Montes. Ages of the valley floor and the surroundings as derived from crater counts define a period of...
Fish assemblage structure in an Oklahoma Ozark stream before and after rainbow trout introduction
M. G. Walsh, D.L. Winkelman
2005, American Fisheries Society Symposium (2005) 417-430
Rainbow trout Oncorhynchus mykiss have been widely stocked throughout the United States as a popular sport fish. Our study was initiated to evaluate potential effects of rainbow trout introduction on native fishes to inform future decisions about trout stocking in northeastern Oklahoma streams. We sampled fish assemblages in pools, glides,...
Distribution and density of moose in relation to landscape characteristics: Effects of scale
J.A.K. Maier, J. M. Ver Hoef, A. D. McGuire, R.T. Bowyer, L. Saperstein, H.A. Maier
2005, Conference Paper, Canadian Journal of Forest Research
We analyzed the relation between early winter distribution and density of female moose (Alces alces L.) and habitat heterogeneity in interior Alaska. We tested for effects of vegetation type, topography, distance to rivers and towns, occurrence and timing of fire, and landscape metrics. A spatial linear model was used to...
Fire effects on soil organic matter content, composition, and nutrients in boreal interior Alaska
J. C. Neff, J.W. Harden, G. Gleixner
2005, Conference Paper, Canadian Journal of Forest Research
Boreal ecosystems contain a substantial fraction of the earth's soil carbon stores and are prone to frequent and severe wildfires. In this study, we examine changes in element and organic matter stocks due to a 1999 wildfire in Alaska. One year after the wildfire, burned soils contained between 1071 and...
Algal productivity and nitrate assimilation in an effluent dominated concrete lined stream
Robert Kent, Kenneth Belitz, Carmen A. Burton
2005, Journal of the American Water Resources Association (41) 1109-1128
This study examined algal productivity and nitrate assimilation in a 2.85 km reach of Cucamonga Creek, California, a concrete lined channel receiving treated municipal wastewater. Stream nitrate concentrations observed at two stations indicated nearly continuous loss throughout the diel study. Nitrate loss in the reach was approximately 11 mg/L/d or...
Evidence for micronutrient limitation of biological soil crusts: Importance to arid-lands restoration
M. A. Bowker, J. Belnap, D. W. Davidson, S. L. Phillips
2005, Ecological Applications (15) 1941-1951
Desertification is a global problem, costly to national economies and human societies. Restoration of biological soil crusts (BSCs) may have an important role to play in the reversal of desertification due to their ability to decrease erosion and enhance soil fertility. To determine if there is evidence that lower fertility...
Radiogenic 4He as a conservative tracer in buried‐valley aquifers
Stephen J. Van der Hoven, R. Erik Wright, David A. Carstens, Keith C. Hackley
2005, Water Resources Research (41)
The accumulation of 4He in groundwater can be a powerful tool in hydrogeologic investigations. However, the use of 4He often suffers from disagreement or uncertainty related to in situ and external sources of 4He. In situ sources are quantified by several methods, while external sources are often treated as calibration parameters in modeling....
Analysis of DNA-vaccinated fish reveals viral antigen in muscle, kidney, and thymus, and transient histopathologic changes
K.A. Garver, C. M. Conway, D.G. Elliott, Gael Kurath
2005, Marine Biotechnology (7) 540-553
A highly efficacious DNA vaccine against a fish rhabdovirus, infectious hematopoietic necrosis virus (IHNV), was used in a systematic study to analyze vaccine tissue distribution, persistence, expression patterns, and histopathologic effects. Vaccine plasmid pIHNw-G, containing the gene for the viral glycoprotein, was detected immediately after intramuscular injection in all tissues...
Effect of ferric oxyhydroxide grain coatings on the transport of bacteriophage PRD1 and Cryptosporidium parvum oocysts in saturated porous media
R.A. Abudalo, Y.G. Bogatsu, J. N. Ryan, R.W. Harvey, D.W. Metge, M. Elimelech
2005, Environmental Science & Technology (39) 6412-6419
To test the effect of geochemical heterogeneity on microorganism transport in saturated porous media, we measured the removal of two microorganisms, the bacteriophage PRD1 and oocysts of the protozoan parasite Cryptosporidium parvum, in flow-through columns of quartz sand coated by different amounts of a ferric oxyhydroxide. The experiments...
Differential parental care by adult Mountain Plovers, Charadrius montanus
Stephen J. Dinsmore, Fritz L. Knopf
2005, Canadian Field-Naturalist (119) 532-536
We studied chick survival of the Mountain Plover (Charadrius montanus) in Montana and found that chicks tended by females had higher survival rates than chicks tended by males, and that chick survival generally increased during the nesting season. Differences in chick survival were most pronounced early in the nesting season,...
Drainage networks after wildfire
D.A. Kinner, J. A. Moody
2005, International Journal of Sediment Research (20) 194-201
Predicting runoff and erosion from watersheds burned by wildfires requires an understanding of the three-dimensional structure of both hillslope and channel drainage networks. We investigate the small-and large-scale structures of drainage networks using field studies and computer analysis of 30-m digital elevation model. Topologic variables were derived from a composite...
Communicating with wildland interface communities during wildfire
Jonathan G. Taylor, Shana C. Gillette, Ronald W. Hodgson, Judith L. Downing
2005, Open-File Report 2005-1061
An inter-agency research team studied communications during the small Bridge Fire in southern California, as well the before-, during-, and post-fire communications of an extreme fire event (Old and Grand Prix Fires) in the same area in the fall of 2003. This “quick-response” research showed that pre-fire communication planning was...
Empirical relations between elastic wavespeeds and density in the Earth's crust
T.M. Brocher
2005, Bulletin of the Seismological Society of America (95) 2081-2092
A compilation of compressional-wave (Vp) and shear-wave (Vs) velocities and densities for a wide variety of common lithologies is used to define new nonlinear, multivalued, and quantitative relations between these properties for the Earth's crust. Wireline borehole logs, vertical seismic profiles, laboratory measurements, and seismic tomography models provide a diverse...
Cibola High Levee Pond annual report 2004
Gordon A. Mueller, Jeanette Carpenter, Paul C. Marsh
2005, Open-File Report 2005-1075
This represents the fourth and last annual report of a five year study investigating the early life ecology of the bonytail and razorback sucker at Cibola High Levee Pond. The work in 2004 included: telemetry studies, collection of physical water quality measurements, zooplankton samples, netting fish, the collection of scale...
Impact of geochemical stressors on shallow groundwater quality
Y.-J. An, D.H. Kampbell, S.-W. Jeong, K.P. Jewell, J.R. Masoner
2005, Science of the Total Environment (348) 257-266
Groundwater monitoring wells (about 70 wells) were extensively installed in 28 sites surrounding Lake Texoma, located on the border of Oklahoma and Texas, to assess the impact of geochemical stressors to shallow groundwater quality. The monitoring wells were classified into three groups (residential area, agricultural area, and oil field area)...
Evolution of large body size in abalones (Haliotis): Patterns and implications
J. A. Estes, D. R. Lindberg, C. Wray
2005, Paleobiology (31) 591-606
Kelps and other fleshy macroalgae - dominant reef-inhabiting organisms in cool - seasmay have radiated extensively following late Cenozoic polar cooling, thus triggering a chain of evolutionary change in the trophic ecology of nearshore temperate ecosystems. We explore this hypothesis through an analysis of body size in the abalones (Gastropoda;...
United States geological survey's reserve-growth models and their implementation
T. R. Klett
2005, Conference Paper, Natural Resources Research
The USGS has developed several mathematical models to forecast reserve growth of fields both in the United States (U.S.) and the world. The models are based on historical reserve growth patterns of fields in the U.S. The patterns of past reserve growth are extrapolated to forecast future reserve growth. Changes...
ATLSS data viewer: A tool to analyze and display ATLSS model outputs
S. Hartley, J. Johnston
Moglen G.E., editor(s)
2005, Conference Paper, Proceedings of the 2005 Watershed Management Conference - Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges
[No abstract available]...
Ichthyophonus in Puget Sound rockfish from the San Juan Islands archipelago and Puget Sound, Washington, USA
D. Halos, S.A. Hart, P. Hershberger, R. Kocan
2005, Journal of Aquatic Animal Health (17) 222-227
In vitro explant cultures identified Ichthyophonus in 10.9% of 302 Puget Sound rockfish Sebastes emphaeus sampled from five sites in the San Juan Islands archipelago and Puget Sound, Washington, in 2003. None of the infected fish exhibited visible lesions and only a single fish was histologically positive. Significantly more females...
Modeling downstream fining in sand-bed rivers. I: Formulation
S. Wright, G. Parker
2005, Journal of Hydraulic Research (43) 613-620
In this paper a numerical modeling formulation is presented for simulation of the development of the longitudinal profile and bed sediment distribution in sand-bed rivers. The objective of the model application, which is presented in the companion paper (Wright and Parker, 2005), is to study the development of two characteristics...
