Pattern and potential causes of White-faced Ibis, Plegadis chihi, establishment in the northern prairie and parkland region of North America
Jill A. Shaffer, Gregory A. Knutsen, Ron E. Martin, Joel S. Brice
2007, Canadian Field-Naturalist (121) 46-56
The Northern Prairie and Parkland Waterbird Conservation Plan calls for renewed attention to determining the current status of waterbird populations, their distributions, and conservation needs. It highlights the need for baseline information on the White-faced Ibis (Plegadis chihi). In response, we examined the historical and current distribution of the ibis...
New estimates for Io eruption temperatures: Implications for the interior
Laszlo P. Keszthelyi, Windy L. Jaeger, Moses P. Milazzo, Jani Radebaugh, Ashley G. Davies, Karl L. Mitchell
2007, Icarus (192) 491-502
The initial interpretation of Galileo data from Jupiter's moon, Io, suggested eruption temperatures ≥1600°C. Tidal heating models have difficulties explaining Io's prodigious heat flow if the mantle is >1300°C, although we suggest that temperatures up to ~1450°C may be possible. In general, Io eruption temperatures have been overestimated because the incorrect thermal model has...
Postfire soil burn severity mapping with hyperspectral image unmixing
P.R. Robichaud, S.A. Lewis, D.Y.M. Laes, A.T. Hudak, R.F. Kokaly, J.A. Zamudio
2007, Remote Sensing of Environment (108) 467-480
Burn severity is mapped after wildfires to evaluate immediate and long-term fire effects on the landscape. Remotely sensed hyperspectral imagery has the potential to provide important information about fine-scale ground cover components that are indicative of burn severity after large wildland fires. Airborne hyperspectral imagery and ground data were collected...
CO2 transport over complex terrain
Jielun Sun, Sean P. Burns, A.C. Delany, S.P. Oncley, A.A. Turnipseed, B.B. Stephens, D.H. Lenschow, M.A. LeMone, Russell K. Monson, D.E. Anderson
2007, Agricultural and Forest Meteorology (145) 1-21
CO2 transport processes relevant for estimating net ecosystem exchange (NEE) at the Niwot Ridge AmeriFlux site in the front range of the Rocky Mountains, Colorado, USA, were investigated during a pilot experiment. We found that cold, moist, and CO2-rich air was transported downslope at night and upslope in the early...
CO2 storage capacity estimation: Issues and development of standards
J. Bradshaw, S. Bachu, D. Bonijoly, R. Burruss, S. Holloway, N.P. Christensen, O.M. Mathiassen
2007, International Journal of Greenhouse Gas Control (1) 62-68
Associated with the endeavours of geoscientists to pursue the promise that geological storage of CO2 has of potentially making deep cuts into greenhouse gas emissions, Governments around the world are dependent on reliable estimates of CO2 storage capacity and insightful indications of the viability of geological storage in their respective...
Mammoth (Mammuthus sp.) excavation on a college campus in Western Illinois, USA
J.D. Treworgy, J.J. Saunders, D.A. Grimley
2007, Quaternary International (169-170) 24-28
The discovery of the remains of a mammoth, Mammuthus sp., on the Principia College campus in Elsah, Illinois, has allowed for careful excavation by students over several years. The mammoth is relatively well preserved in late Wisconsin Peoria Silt on the top of the bluffs of the Mississippi River. The...
Natural versus anthropogenic dispersion of metals to the environment in the Wulik River area, western Brooks Range, northern Alaska
K.D. Kelley, T. Hudson
2007, Geochemistry: Exploration, Environment, Analysis (7) 87-96
Zinc-lead-silver mineral deposits in the Wulik River region, Alaska, contain an enormous accumulation of Zn. In addition to the giant deposits at Red Dog, at least nine other deposits are known. Natural weathering of these deposits has dispersed metals over a wide region over a long period of time (c....
Comparative lahar hazard mapping at Volcan Citlaltépetl, Mexico using SRTM, ASTER and DTED-1 digital topographic data
Bernard E. Hubbard, Michael F. Sheridan, Gerardo Carrasco-Nunez, Rodolfo Diaz-Castellon, Sergio R. Rodriguez
2007, Journal of Volcanology and Geothermal Research (160) 99-124
In this study, we evaluated and compared the utility of spaceborne SRTM and ASTER DEMs with baseline DTED-1 “bald-earth” topography for mapping lahar inundation hazards from volcan Citlaltépetl, Mexico, a volcano which has had a history of producing debris flows of various extents. In particular, we tested the utility...
Quantifying foodweb interactions with simultaneous linear equations: Stable isotope models of the Truckee River, USA
L. Saito, C. Redd, S. Chandra, L. Atwell, C.H. Fritsen, Michael R. Rosen
2007, Journal of the North American Benthological Society (26) 642-662
Aquatic foodweb models for 2 seasons (relatively high- [March] and low-flow [August] conditions) were constructed for 4 reaches on the Truckee River using ??13C and ??15N data from periphyton, macroinvertebrate, and fish samples collected in 2003 and 2004. The models were constructed with isotope values that included measured periphyton signatures...
The lakes and seas of Titan
Rosaly Lopes, Karl L. Mitchell, Stephen D. Wall, Giuseppe Mitri, Michael Janssen, Steven J. Ostro, Randolph L. Kirk, Alexander G. Hayes, Ellen R. Stofan, Jonathan I. Lunine, Ralph D. Lorenz, Charles Wood, Jani Radebaugh, Philipe Paillou, H. Zebker, Flora Paganelli
2007, Eos, Transactions, American Geophysical Union (88)
No abstract available....
Geographic variation in avian incubation periods and parental influences on embryonic temperature
T. E. Martin, S.K. Auer, R.D. Bassar, Alina M. Niklison, P. Lloyd
2007, Evolution (61) 2558-2569
Theory predicts shorter embryonic periods in species with greater embryo mortality risk and smaller body size. Field studies of 80 passerine species on three continents yielded data that largely conflicted with theory; incubation (embryonic) periods were longer rather than shorter in smaller species, and egg (embryo) mortality risk explained some...
Early discrimination of Atlantic salmon smolt age: Time course of the relative effectiveness of body size and shape
J.H. Pearlstein, B. H. Letcher, M. Obedzinski
2007, Transactions of the American Fisheries Society (136) 1622-1632
The goal of this study was to test the relative effectiveness of morphological measurements and body size in predicting the smolt age of Atlantic salmon Salmo salar and to determine the time course of body size and shape differences between smolt ages. Analyses were conducted on age-0 to age-2 fish...
Willow Flycatcher nonbreeding territory defense behavior in Costa Rica
M. K. Sogge, T. J. Koronkiewicz, Charles van Riper III, S.L. Durst
2007, The Condor (109) 475-480
We studied the intraspecific territorial defense behavior of wintering Willow Flycatchers (Empidonax traillii) in Costa Rica using a randomized playback experiment that exposed male and female birds to recordings of Willow Flycatcher songs and calls, Lesser Ground Cuckoo (Morococcyx erythropygius) vocalizations, and random noise. Flycatchers of both sexes responded most...
Reproductive strategies of northern geese: Why wait?
Craig R. Ely, K.S. Bollinger, R.V. Densmore, T.C. Rothe, M.J. Petrula, John Y. Takekawa, D.L. Orthmeyer
2007, The Auk (124) 594-605
Migration and reproductive strategies in waterbirds are tightly linked, with timing of arrival and onset of nesting having important consequences for reproductive success. Whether migratory waterbirds are capital or income breeders is predicated by their spring migration schedule, how long they are on breeding areas before nesting, and how adapted...
Short-term aftershock probabilities: Case studies in California
M.C. Gerstenberger, L.M. Jones, S. Wiemer
2007, Seismological Research Letters (78) 66-77
[No abstract available]...
Preface
J.P.-Y. Maa, L.P. Sanford, D. H. Schoellhamer
Maa J.P.Y.Sanford L.P.Schoellhamer D.H., editor(s)
2007, Proceedings in Marine Science (8) v-vi
No abstract available....
Long-term monitoring of growth in the Eastern Elliptio, Elliptio complanata (Bivalvia: Unionidae), in Rhode Island: A transplant experiment
D.H. Kesler, T.J. Newton, L. Green
2007, Journal of the North American Benthological Society (26) 123-133
The lengths of marked specimens of the freshwater mussel, Eastern Elliptio (Elliptio complanata [Lightfoot 1786]), were monitored annually in 3 lakes in Rhode Island, USA, from 1991 to 2005. Mussels growing in Worden Pond showed a change in mean shell length of only 4.3 mm over 14 y, whereas mussel...
Seismic hazard and risk assessment in the intraplate environment: The New Madrid seismic zone of the central United States
Z. Wang
2007, Special Paper of the Geological Society of America 363-374
Although the causes of large intraplate earthquakes are still not fully understood, they pose certain hazard and risk to societies. Estimating hazard and risk in these regions is difficult because of lack of earthquake records. The New Madrid seismic zone is one such region where large and rare intraplate earthquakes...
Comparison of fate and transport of isoxaflutole to atrazine and metolachlor in 10 Iowa rivers
Michael T. Meyer, Elisabeth A. Scribner, Stephen J. Kalkhoff
2007, Environmental Science & Technology (41) 6933-6939
Isoxaflutole (IXF), a newer low application rate herbicide, was introduced for weed control in corn (Zea mays) to use as an alternative to widely applied herbicides such as atrazine. The transport of IXF in streamwater has not been well-studied. The fate and transport of IXF and two of its degradation...
Strategies for survival: Stellar sea lions, harbor seals and sea otters Chapter 4.9
Alan M. Springer, Sara J. Iverson, James L. Bodkin
Robert B. Spies, editor(s)
2007, Book chapter, Long-Term Ecological Change in the Northern Gulf of Alaska
Movement patterns of armado, Pterodoras granulosus, in the Paraná River Basin
M.C. Makrakis, L.E. Miranda, S. Makrakis, D.R. Fernandez, J.O. Garcia, J.H.P. Dias
2007, Ecology of Freshwater Fish (16) 410-416
We studied the migratory behaviour of armado, Pterodoras granulosus, in the Paraná River Basin of Brazil, Paraguay and Argentina, during 1997–2005. This species invaded the Upper Paraná River after upstream dispersal was facilitated when Itaipu Reservoir inundated a natural barrier. Fish were tagged (N = 8051) in the mainstems of the Yacyreta and...
Diet of western Burrowing Owls wintering in southern Texas
C.J. Littles, D. Williford, M.K. Skoruppa, M.C. Woodin, G.C. Hickman
2007, Journal of Raptor Research (41) 307-313
Winter diets of the western Burrowing Owl (Athene cunicularia hypugaea) are little known. We determined the diet of western Burrowing Owls wintering in southern Texas by analyzing the contents of 182 pellets collected over four winters (1999-2000, 2001-2002, 2002-2003, and 2003-2004) in three habitat types (agricultural, mainland grassland, and barrier...
Development of a mercury speciation, fate, and biotic uptake (BIOTRANSPEC) model: Application to Lahontan Reservoir (Nevada, USA)
N. Gandhi, S.P. Bhavsar, M.L. Diamond, James S. Kuwabara, Mark C. Marvin-DePasquale, David P. Krabbenhoft
2007, Environmental Toxicology and Chemistry (26) 2260-2273
A mathematically linked mercury transport, speciation, kinetic, and simple biotic uptake (BIOTRANSPEC) model has been developed. An extension of the metal transport and speciation (TRANSPEC) model, BIOTRANSPEC estimates the fate and biotic uptake of inorganic (Hg(II)), elemental (Hg(0)) and organic (MeHg) forms of mercury and their species in the dissolved,...
A critical assessment of the Burning Index in Los Angeles County, California
F.P. Schoenberg, H.-C. Chang, Jon E. Keeley, J. Pompa, J. Woods, H. Xu
2007, International Journal of Wildland Fire (16) 473-483
The Burning Index (BI) is commonly used as a predictor of wildfire activity. An examination of data on the BI and wildfires in Los Angeles County, California, from January 1976 to December 2000 reveals that although the BI is positively associated with wildfire occurrence, its predictive value is quite limited....
Use of dissolved chloride concentrations in tributary streams to support geospatial estimates of Cl contamination potential near Skiatook Lake, northeastern Oklahoma
C. A. Rice, M.M. Abbott, R. A. Zielinski
2007, Applied Geochemistry (22) 2193-2206
Releases of NaCl-rich (>100 000 mg/L) water that is co-produced from petroleum wells can adversely affect the quality of ground and surface waters. To evaluate produced water impacts on lakes, rivers and streams, an assessment of the contamination potential must be attainable using reliable and cost-effective methods. This study examines...
