Density and habitat associations of Barred Owls at the edge of their range in Oklahoma
Brian R. Winton, David M. Leslie Jr.
2004, Southeastern Naturalist (3) 475-482
We assessed breeding-pair density and habitat associations of Barred Owls (Strix varia) at the edge of their range in north-central Oklahoma in 1995-1996. We played taped calls of Barred Owls to solicit and record responses (visual and auditory) and thereby determine density in our 1155-ha study area. Numbers of owls...
Depositional settings, correlation, and age carboniferous rocks in the western Brooks Range, Alaska
Julie A. Dumoulin, Anita G. Harris, Charles D. Blome, Lorne E. Young
2004, Economic Geology (99) 1355-1384
The Kuna Formation (Lisburne Group) in northwest Alaska hosts the Red Dog and other Zn-Pb-Ag massive sulfide deposits in the Red Dog district. New studies of the sedimentology and paleontology of the Lisburne Group constrain the setting, age, and thermal history of these deposits. In the western and west-central Brooks...
Divergence among barking frogs (Eleutherodactylus augusti) in the southwestern United States
Caren S. Goldberg, Brian K. Sullivan, John H. Malone, Cecil R. Schwalbe
2004, Herpetologica (60) 312-320
Barking frogs (Eleutherodactylus augusti) are distributed from southern Mexico along the Sierra Madre Occidental into Arizona and the Sierra Madre Oriental into Texas and New Mexico. Barking frogs in Arizona and most of Texas live in rocky areas in oak woodland, while those in New Mexico and far...
Red spruce dynamics in an old southern Appalachian forest
R. T. Busing
2004, Journal of the Torrey Botanical Society (131) 337-342
By the late 1980s the composition and structure of forest stands in the southern Appalachian spruce-fir zone were altered by insect infestations to Fraser fir. The response of red spruce, the sole remaining coniferous forest dominant, to this disturbance was followed over twenty years (1983-2003) in an old spruce-fir forest...
Biomass accumulation and soil nitrogen availability in an 87-year-old Populus grandidentata chronosequence
L.L. White, D.R. Zak, B.V. Barnes
2004, Forest Ecology and Management (191) 121-127
The Upper Lake States region is marked by major disturbances of fire and logging over 100 years ago that created a landscape mosaic of early successional forests. Given the intimate link between soil N availability and forest growth in this region, it is important to understand how temporal changes in...
Investigation of the low-depression velocity layer in desert area by multichannel analysis of surface-wave method
S. Cheng, G. Tian, J. Xia, H. He, Z. Shi
Chen C.Xia J., editor(s)
2004, Conference Paper, Progress in Environmental and Engineering Geophysics: Proceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004
The multichannel analysis of surface-wave method (MASW) is a newly development method. The method has been employed in various applications in environmental and engineering geophysics overseas. However, It can only be found a few case studies in China. Most importantly, there is no application of the MASW in desert area...
Prevalence of the parasitic copepod Haemobaphes intermedius on juvenile buffalo sculpins from Washington State
C.M. Halpenny, R. M. Kocan, P.K. Hershberger
2004, Journal of Aquatic Animal Health (16) 161-163
The parasitic copepod, Haemobaphes intermedius, was detected in 62% of juvenile buffalo sculpins Enophrys bison, a previously unreported host, from the San Juan Islands archipelago in Washington State. Most infestations were characterized by the presence of a single female copepod infestations with multiple H. intermedius occurred either unilaterally or bilaterally...
Dynamic modelling of an adsorption storage tank using a hybrid approach combining computational fluid dynamics and process simulation
J.P.B. Mota, I.A.A.C. Esteves, M. Rostam-Abadi
2004, Computers and Chemical Engineering (28) 2421-2431
A computational fluid dynamics (CFD) software package has been coupled with the dynamic process simulator of an adsorption storage tank for methane fuelled vehicles. The two solvers run as independent processes and handle non-overlapping portions of the computational domain. The codes exchange data on the boundary interface of the two...
Prevalence and differential host-specificity of two avian blood parasite genera in the Australo-Papuan region
J.S. Beadell, E. Gering, J. Austin, J.P. Dumbacher, M.A. Peirce, T.K. Pratt, C. T. Atkinson, R.C. Fleischer
2004, Molecular Ecology (13) 3829-3844
The degree to which widespread avian blood parasites in the genera Plasmodium and Haemoproteus pose a threat to novel hosts depends in part on the degree to which they are constrained to a particular host or host family. We examined the host distribution and host-specificity of these parasites in birds...
Efficacy of single calfhood vaccination of elk with Brucella abortus strain 19
T.J. Roffe, L.C. Jones, K. Coffin, M.L. Drew, Steven J. Sweeney, S.D. Hagius, P.H. Elzer, D. Davis
2004, Journal of Wildlife Management (68) 830-836
Brucellosis has been eradicated from cattle in the states of Wyoming, Montana, and Idaho, USA. However, free-ranging elk (Cervus elaphus) that use feedgrounds in the Greater Yellowstone Area (GYA) and bison (Bison bison) in Yellowstone and Grand Teton national parks still have high seroprevalence to the disease and have caused...
Effects of phase-feeding dietary phosphorus on survival, growth, and processing characteristics of rainbow trout Oncorhynchus mykiss
W.A. Lellis, F.T. Barrows, R.W. Hardy
2004, Aquaculture (242) 607-616
A factorial experiment involving eight diets and three feeding periods was conducted to determine the minimal level of dietary phosphorus required to maintain survival, growth, and processing characteristics of post-juvenile rainbow trout. Trout were reared to an average size of 200, 300, or 400 g using a commercial feed (1.20%...
Sex differences in Little Auk Alle alle parental care: Transition from biparental to paternal-only care
A.M.A. Harding, Thomas I. van Pelt, J.T. Lifjeld, F. Mehlum
2004, Ibis (146) 642-651
Understanding differences in male and female care in biparental care systems can help interpret the selective pressures that shape parental strategies. We examined Little Auk Alle alle parental care at a breeding colony during the chick-rearing and fledging periods by conducting observations on marked, known-sex pairs, and by examining the...
Observations of deep long-period (DLP) seismic events beneath Aleutian arc volcanoes; 1989-2002
J.A. Power, S.D. Stihler, R.A. White, S.C. Moran
2004, Journal of Volcanology and Geothermal Research (138) 243-266
Between October 12, 1989 and December 31, 2002, the Alaska Volcano Observatory (AVO) located 162 deep long-period (DLP) events beneath 11 volcanic centers in the Aleutian arc. These events generally occur at mid- to lower-crustal depths (10-45 km) and are characterized by emergent phases, extended codas, and a strong...
The Meteoritical Bulletin, No. 88, 2004 July
Sara S. Russell, L. Folco, Monica M. Grady, M.E. Zolensky, R. Jones, K. Righter, J. Zipfel, J. N. Grossman
2004, Meteoritics and Planetary Science (39)
The Meteoritical Bulletin No. 88 lists information for 1610 newly classified meteorites, comprising 753 from Antarctica, 302 from Africa, 505 from Asia (495 of which are from Oman), 40 from North America, 5 from South America, 4 from Europe, and 1 of unknown origin. Information is provided for 9 falls...
Differential consumption of eastern red cedar (Juniperus virginiana) by avian and mammalian guilds: Implications for tree invasion
V.J. Horncastle, E. C. Hellgren, P.M. Mayer, David M. Engle, D.M. Leslie
2004, American Midland Naturalist (152) 255-267
Increased abundance and distribution of eastern redcedar (Juniperns virginiannus), a native species in the Great Plains, has been associated with changes in ecosystem functioning and landscape cover. Knowledge of the main consumers and dispersal agents of eastern red cedar cones is essential to understanding the invasive spread of the species....
Constraints of body size and swimming velocity on the ability of juvenile rainbow trout to endure periods without food
D.G. Simpkins, W.A. Hubert, C. Martinez Del Rio, D.C. Rule
2004, Journal of Fish Biology (65) 530-544
The hypothesis that body size and swimming velocity affect proximate body composition, wet mass and size-selective mortality of fasted fish was evaluated using small (107 mm mean total length, LT) and medium (168 mm mean LT) juvenile rainbow trout Oncorhynchus mykiss that were sedentary or swimming (c. 1 or 2...
Flow resistance and suspended load in sand-bed rivers: Simplified stratification model
S. Wright, G. Parker
2004, Journal of Hydraulic Engineering (130) 796-805
New methods are presented for the prediction of the flow depth, grain-size specific near-bed concentration, and bed-material suspended sediment transport rate in sand-bed rivers. The salient improvements delineated here all relate to the need to modify existing formulations in order to encompass the full range of sand-bed rivers, and in...
Bioenergetics-based modeling of individual PCB congeners in nestling tree swallows from two contaminated sites on the Upper Hudson River, New York
John W. Nichols, Kathy R. Echols, Donald E. Tillitt, Anne L. Secord, John P. McCarty
2004, Environmental Science & Technology (38) 6234-6239
A bioenergetics-based model was used to simulate the accumulation of total PCBs and 20 PCB congeners by nestling tree swallows at two contaminated sites on the Upper Hudson River, New York. PCB concentrations in birds were calculated as the sum of inherited residues and those acquired through consumption of contaminated...
Acoustic measurements of the 1999 basaltic eruption of Shishaldin volcano, Alaska 1. Origin of Strombolian activity
S. Vergniolle, M. Boichu, J. Caplan-Auerbach
2004, Journal of Volcanology and Geothermal Research (137) 109-134
The 1999 basaltic eruption of Shishaldin volcano (Alaska, USA) displayed both classical Strombolian activity and an explosive Subplinian plume. Strombolian activity at Shishaldin occurred in two major phases following the Subplinian activity. In this paper, we use acoustic measurements to interpret the Strombolian activity. Acoustic measurements of the two Strombolian...
An evaluation of the individual components and accuracies associated with the determination of impervious area
E.T. Slonecker, J.S. Tilley
2004, GIScience and Remote Sensing (41) 165-184
The percentage of impervious surface area in a watershed has been widely recognized as a key indicator of terrestrial and aquatic ecosystem condition. Although the use of the impervious indicator is widespread, there is currently no consistent or mutually accepted method of computing impervious area and the approach of various...
Evaluation of current techniques for isolation of chars as natural adsorbents
Y. Chun, G. Sheng, C. T. Chiou
2004, Environmental Science & Technology (38) 4227-4232
Chars in soils or sediments may potentially influence the soil/sediment sorption behavior. Current techniques for the isolation of black carbon including chars rely often on acid demineralization, base extraction, and chemical oxidation to remove salts and minerals, humic acid, and refractory kerogen, respectively. Little is known about the potential effects...
Comparison of electrofishing and trammel netting variability for sampling native fishes
C.P. Paukert
2004, Journal of Fish Biology (65) 1643-1652
The variability in size structure and relative abundance (CPUE; number of fish ≥200 mm total length, LT, collected per hour of electrofishing or trammel netting) of three native Colorado River fishes, the endangered humpback chub Gila cypha, flannelmouth sucker Catostomus latipinnus and bluehead sucker Catostomus discobolus, collected from electrofishing and trammel nets was assessed...
Uncertainty in low-flow data from three streamflow-gaging stations on the upper Verde River, Arizona
D.W. Anning
Sehlke G.Hayes D.F.Stevens D.K., editor(s)
2004, Conference Paper, Proceedings of the 2004 World Water and Environmetal Resources Congress: Critical Transitions in Water and Environmetal Resources Management
The evaluation of uncertainty in low-flow data collected from three streamflow-gaging stations on the upper Verde River, Arizona, was presented. In downstream order, the stations are Verde River near Paulden, Verde River near Clarkdale, and Verde River near Camp Verde. A monitoring objective of the evaluation was to characterize discharge...
Comparison of in situ uranium KD values with a laboratory determined surface complexation model
G.P. Curtis, P. Fox, M. Kohler, J.A. Davis
2004, Applied Geochemistry (19) 1643-1653
Reactive solute transport simulations in groundwater require a large number of parameters to describe hydrologic and chemical reaction processes. Appropriate methods for determining chemical reaction parameters required for reactive solute transport simulations are still under investigation. This work compares U(VI) distribution coefficients (i.e. KD values) measured under field conditions with...
Methane fluxes between terrestrial ecosystems and the atmosphere at northern high latitudes during the past century: A retrospective analysis with a process-based biogeochemistry model
Q. Zhuang, J. M. Melillo, D. W. Kicklighter, R.G. Prinn, A. D. McGuire, P.A. Steudler, B.S. Felzer, S. Hu
2004, Global Biogeochemical Cycles (18)
We develop and use a new version of the Terrestrial Ecosystem Model (TEM) to study how rates of methane (CH4) emissions and consumption in high-latitude soils of the Northern Hemisphere have changed over the past century in response to observed changes in the region's climate. We estimate that the net...
