Parasitism and body condition in humpback chub from the Colorado and Little Colorado Rivers, Grand Canyon, Arizona
Timothy L. Hoffnagle, Anindo Choudhury, Rebecca A. Cole
2006, Journal of Aquatic Animal Health (18) 184-193
<span data-sheets-value="{"1":2,"2":"Glen Canyon Dam has greatly altered the Colorado River in Grand Canyon. The Little Colorado River (LCR) provides a small refuge of seasonally warm and turbid water that is thought to be more suitable than the Colorado River for endangered humpback chub Gila cypha. However, the LCR has low...
Regional Kendall test for trend
D.R. Helsel, L.M. Frans
2006, Environmental Science & Technology (40) 4066-4073
Trends in environmental variables are often investigated within a study region at more than one site. At each site, a trend analysis determines whether a trend has occurred. Yet often also of interest is whether a consistent trend is evident throughout the entire region. This paper adapts the Seasonal Kendall...
The atmospheres of Saturn and Titan in the near-infrared: First results of Cassini/Vims
K. H. Baines, T.W. Momary, B. J. Buratti, D. L. Matson, R.M. Nelson, P. Drossart, B. Sicardy, V. Formisano, G. Bellucci, A. Coradini, C. Griffith, R. H. Brown, J.-P. Bibring, Y. Langevin, F. Capaccioni, P. Cerroni, R. N. Clark, M. Combes, D. P. Cruikshank, R. Jaumann, T.B. McCordt, V. Mennella, P. D. Nicholson, Christophe Sotin
2006, Earth, Moon and Planets (96) 119-147
The wide spectral coverage and extensive spatial, temporal, and phase-angle mapping capabilities of the Visual Infrared Mapping Spectrometer (VIMS) onboard the Cassini-Huygens Orbiter are producing fundamental new insights into the nature of the atmospheres of Saturn and Titan. For both bodies, VIMS maps over time and solar phase angles provide...
Update on the distribution of the invasive Asian fish tapeworm, Bothriocephalus acheilognathi, in the U.S. and Canada
A. Choudhury, E. Charipar, P. Nelson, J.R. Hodgson, S. Bonar, Rebecca A. Cole
2006, Comparative Parasitology (73) 269-273
The documented range of the invasive and potentially pathogenic Asian fish tapeworm, Bothriocephalus acheilognathi Yamaguti, 1934 in the United States and Canada is updated based on examination of museum depositions and original field collections. Gravid specimens of B. acheilognathi were collected from the fathead minnow Pimephales promelas Rafinesque in Peter...
Using models to manage systems subject to sustainability indicators
M. C. Hill
2006, Conference Paper, IAHS-AISH Publication
Mathematical and numerical models can provide insight into sustainability indicators using relevant simulated quantities, which are referred to here as predictions. To be useful, many concerns need to be considered. Four are discussed here: (a) mathematical and numerical accuracy of the model; (b) the accuracy of the data used in...
Defining and implementing best available science for fisheries and environmental science, policy, and management
P.J. Sullivan, J.M. Acheson, P. L. Angermeier, T. Faast, J. Flemma, C.M. Jones, E.E. Knudsen, T.J. Minello, D.H. Secor, R. Wunderlich, B.A. Zanetell
2006, Fisheries (31) 460-465
[No abstract available]...
Modelling and understanding volcanic processes using high-quality seismological data
Bernard A. Chouet
2006, Géosciences (2006) 56-63
At an active volcano, Very-Long-Period (VLP) seismicity (with typical periods in the range 2-100 s) reflects pressure fluctuations resulting from unsteady mass transport in the sub-surface plumbing system, and hence provides a glimpse of the internal dynamics of the volcanic edifice. Understanding the fundamental fluid-flow mechanisms involved in the...
Trophic structure and avian communities across a salinity gradient in evaporation ponds of the San Francisco Bay estuary
John Y. Takekawa, A.K. Miles, D. H. Schoellhamer, N.D. Athearn, M. K. Saiki, W.D. Duffy, S. Kleinschmidt, G.G. Shellenbarger, C.A. Jannusch
2006, Hydrobiologia (567) 307-327
Commercial salt evaporation ponds comprise a large proportion of baylands adjacent to the San Francisco Bay, a highly urbanized estuary. In the past two centuries, more than 79% of the historic tidal wetlands in this estuary have been lost. Resource management agencies have acquired more than 10 000 ha of commercial salt...
Evidence for a polar ethane cloud on Titan
C.A. Griffith, P. Penteado, P. Rannou, R. Brown, V. Boudon, K. H. Baines, R. Clark, P. Drossart, B. Buratti, P. Nicholson, C.P. McKay, A. Coustenis, A. Negrao, R. Jaumann
2006, Science (313) 1620-1622
Spectra from Cassini's Visual and Infrared Mapping Spectrometer reveal the presence of a vast tropospheric cloud on Titan at latitudes 51?? to 68?? north and all longitudes observed (10?? to 190?? west). The derived characteristics indicate that this cloud is composed of ethane and forms as a result of stratospheric...
Use of the oligochaete, Lumbriculus variegatus, as a prey organism for toxicant exposure of fish through the diet
D.R. Mount, T.L. Highland, V.R. Mattson, T.D. Dawson, K.G. Lott, C.G. Ingersoll
2006, Environmental Toxicology and Chemistry (25) 2760-2767
The oligochaete, Lumbriculus variegatus, has several characteristics that make it desirable as a prey organism for conducting dietary exposure studies with fish. We conducted 21- and 30-d experiments with young fathead minnows (Pimephales promelas) and rainbow trout (Oncorhynchus mykiss), respectively, to determine whether a diet consisting solely of L. variegatus...
Abrupt transitions during sustained explosive eruptions: Examples from the 1912 eruption of Novarupta, Alaska
N.K. Adams, Bruce F. Houghton, W. Hildreth
2006, Bulletin of Volcanology (69) 189-206
Plinian/ignimbrite activity stopped briefly and abruptly 16 and 45 h after commencement of the 1912 Novarupta eruption defining three episodes of explosive volcanism before finally giving way after 60 h to effusion of lava domes. We focus here on the processes leading to the termination of the second and third...
Stochastic uncertainty analysis for unconfined flow systems
Gaisheng Liu, Dongxiao Zhang, Zhiming Lu
2006, Water Resources Research (42)
A new stochastic approach proposed by Zhang and Lu (2004), called the Karhunen‐Loeve decomposition‐based moment equation (KLME), has been extended to solving nonlinear, unconfined flow problems in randomly heterogeneous aquifers. This approach is on the basis of an innovative combination of Karhunen‐Loeve decomposition, polynomial expansion, and perturbation methods. The random...
Crims Island habitat restoration in the Columbia River estuary-fisheries monitoring and evaluation, 2004
C. A. Haskell, K.F. Tiffan, R.C. Koch, D.W. Rondorf
2006, Report
No abstract available ...
Assess current and potential salmonid production in Rattlesnake Creek associated with restoration efforts
M.B. Allen, P.J. Connolly
2006, Report
No abstract available ...
Survival estimates of migrant juvenile salmonids through The Dalles Dam using radio telemetry, 2005
T. Counihan, A. Puls, C. Walker, G. Holmberg
2006, Report
No abstract available ...
Passage behavior of radio-tagged subyearling Chinook salmon at Bonneville Dam, 2005
R.E. Reagan, M.J. Farley, S.D. Evans, L.S Wright, N.S. Adams, D.W. Rondorf
2006, Report
No abstract available ...
Migration stopovers and the conservation of arctic-breeding Calidrine sandpipers
Susan K. Skagen
2006, The Auk (123) 313-322
Long-distance migration, one of the most physically demanding events in the animal kingdom, is well developed in many species of Charadriidae and Scolopacidae. Some shorebirds renowned for their extraordinary long-distance migrations, notably American Golden-Plover (Pluvialis dominica), Red Knot (Calidris canutus rufa), and White-rumped Sandpiper (C. fuscicollis), travel as many as...
The MODIS reprojection tool
John L. Dwyer, Gail L. Schmidt
J.J. Qu, W. Gao, M. Kafatos, R.E. Murphy, V.V. Salomonson, editor(s)
2006, Book chapter, Earth science satellite remote sensing— Data, computational processing, and tools
The MODIS Reprojection Tool (MRT) is designed to help individuals work with MODIS Level-2G, Level-3, and Level-4 land data products. These products are referenced to a global tiling scheme in which each tile is approximately 10° latitude by 10° longitude and non-overlapping (Fig. 9.1). If desired, the user may reproject...
Stakeholder opinions regarding management of Conservation Reserve Program lands to address environmental and wildlife issues
M.W. Vandever, D.L. Hoag
2006, Human Dimensions of Wildlife (11) 147-149
No abstract available....
Remotely sensed data available from the US Geological Survey EROS Data Center
John L. Dwyer
J.J. Qu, W. Gao, M. Kafatos, R.E. Murphy, V.V. Salomonson, editor(s)
2006, Book chapter, Earth science satellite remote sensing— Data, computational processing, and tools
The Center for Earth Resources Observation Systems (EROS) is a field center of the geography discipline within the US geological survey (USGS) of the Department of the Interior. The EROS Data Center (EDC) was established in the early 1970s as the nation’s principal archive of remotely sensed data. Initially the...
Species richness and patterns of invasion in plants, birds, and fishes in the United States
Thomas J. Stohlgren, David Barnett, Curtis Flather, Pamela L. Fuller, Bruce G. Peterjohn, John Kartesz, Lawrence L. Master
2006, Biological Invasions (8) 427-447
We quantified broad-scale patterns of species richness and species density (mean # species/km2) for native and non-indigenous plants, birds, and fishes in the continental USA and Hawaii. We hypothesized that the species density of native and non-indigenous taxa would generally decrease in northern latitudes and higher elevations following declines in...
Trends in snowfall versus rainfall in the western United States
N. Knowles, M. D. Dettinger, D.R. Cayan
2006, Journal of Climate (19) 4545-4559
The water resources of the western United States depend heavily on snowpack to store part of the wintertime precipitation into the drier summer months. A well-documented shift toward earlier runoff in recent decades has been attributed to 1) more precipitation falling as rain instead of snow and 2) earlier snowmelt....
Peat
S.M. Jasinski
2006, Mining Engineering (58) 46-47
In 2005, peat was harvested in 15 US states. Florida, Michigan and Minnesota accounted for more than 80% of the US production. Reed-sedge was the dominant variety of peat harvested in the United States. More than 56% of all peat used in the US was imported from Canada. With the...
Response of white-footed mice (Peromyscus leucopus) to fire and fire surrogate fuel reduction treatments in a southern Appalachian hardwood forest
C.H. Greenberg, David L. Otis, T.A. Waldrop
2006, Forest Ecology and Management (234) 355-362
An experiment conducted as part of the multidisciplinary National Fire and Fire Surrogate Study was designed to determine effects of three fuel reduction techniques on small mammals and habitat structure in the southern Appalachian mountains. Four experimental units, each >14-ha were contained within each of three replicate blocks at the...
Wetland environmental conditions associated with the risk of avian cholera outbreaks and the abundance of Pasteurella multocida
Julie A. Blanchong, Michael D. Samuel, Diana R. Goldberg, Daniel J. Shadduck, L. H. Creekmore
2006, Journal of Wildlife Management (70) 54-60
Avian cholera is a significant infectious disease affecting waterfowl across North America and occurs worldwide among various avian species. Despite the importance of this disease, little is known about the factors that cause avian cholera outbreaks and what management strategies might be used to reduce disease mortality. Previous studies indicated...
