Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

185099 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 2456, results 61376 - 61400

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Terrapene carolina. Eastern Box Turtle
T.G. Farrell, C.K. Dodd Jr., P.G. May
Peter A. Meylan, editor(s)
2006, Book chapter, Chelonian Research Monographs 3. Biology and Conservation of Florida's Turtles
Abstract not supplied at this time...
Attitudes and perceptions about prairie dogs
Berton Lee Lamb, Richard P. Reading, William F. Andelt
John L. Hoogland, editor(s)
2006, Book chapter, Conservation of the black-tailed prairie dog: Saving North America's western grasslands
We sometimes get the impression that all ranchers and farmers of the western United States hate prairie dogs, and that people everywhere else love them. This generality contains elements of truth, but better documentation of attitudes and perceptions is paramount for good conservation. In this chapter we examine attitudes and...
Balancing predation and egg harvest in a colonial seabird: A simulation model
Stephani Zador, John F. Piatt, A. E. Punt
2006, Ecological Modelling (195) 318-326
We developed an individual-based model to study the effects of different regimes of harvesting eggs and natural predation on reproductive success in a colony of the glaucous-winged gull (Larus glaucescens) in Glacier Bay National Park, Alaska. The model incorporates the sequence of egg laying, relaying, and incubation to hatching for...
Population momentum across vertebrate life histories
D. N. Koons, J.B. Grand, J.M. Arnold
2006, Ecological Modelling (197) 418-430
Population abundance is critically important in conservation, management, and demographic theory. Thus, to better understand how perturbations to the life history affect long-term population size, we examined population momentum for four vertebrate classes with different life history strategies. In a series of demographic experiments we show that population momentum generally...
Fire ecology of the Sierra Nevada
J. W. van Wagtendonk
George Wuerthner, editor(s)
2006, Book chapter, Fire - Restoring fire to the land - Fire ecology and forest health
No abstract available....
Evolution of plant adaptations
Jon E. Keeley
J. Fites-Kaufman, N. Sugihari, J. van Wangtendonk, editor(s)
2006, Book chapter, Fire Ecology of California Ecosystems.
No abstract available at this time...
The quest for the perfect gravity anomaly: Part 2 - Mass effects and anomaly inversion
Gordon R. Keller, T.G. Hildenbrand, W. J. Hinze, X. Li, D. Ravat, M. Webring
2006, SEG Technical Program Expanded Abstracts (25) 864-868
Gravity anomalies have become an important tool for geologic studies since the widespread use of high-precision gravimeters after the Second World War. More recently the development of instrumentation for airborne gravity observations, procedures for acquiring data from satellite platforms, the readily available Global Positioning System for precise vertical and horizontal...
Flood lavas on Earth, Io and Mars
Laszlo P. Keszthelyi, Stephen Self, Thorvaldur Thordarson
2006, Journal of the Geological Society (163) 253-264
Flood lavas are major geological features on all the major rocky planetary bodies. They provide important insight into the dynamics and chemistry of the interior of these bodies. On the Earth, they appear to be associated with major and mass extinction events. It is therefore not surprising that there has...
Simulation of reactive transport of uranium(VI) in groundwater with variable chemical conditions
Gary P. Curtis, James A. Davis, David L. Naftz
2006, Water Resources Research (42)
The reactive transport of U(VI) in a shallow alluvial aquifer beneath a former U(VI) mill located near Naturita, CO, was simulated using a surface complexation model (SCM) to describe U(VI) adsorption. The groundwater had variable U(VI) concentrations (0.01–20 μM), variable alkalinity (2.5–18 meq/L), and a nearly constant pH equal to...
New guidelines for δ13C measurements
Tyler B. Coplen, Willi A. Brand, Matthias Gehre, Manfred Groning, Harro A. J. Meijer, Blaza Toman, R. Michael Verkouteren
2006, Analytical Chemistry (78) 2439-2441
Consistency of δ13C measurements can be improved 39−47% by anchoring the δ13C scale with two isotopic reference materials differing substantially in 13C/12C. It is recommended thatδ13C values of both organic and inorganic materials be measured and expressed relative to VPDB (Vienna Peedee belemnite) on a scale normalized by assigning consensus values of −46.6‰...
Stress changes along the Sunda trench following the 26 December 2004 Sumatra-Andaman and 28 March 2005 Nias earthquakes
F. F. Pollitz, P. Banerjee, R. Burgmann, M. Hashimoto, N. Choosakul
2006, Geophysical Research Letters (33)
The 26 December 2004 Mw = 9.2 and 28 March 2005 Mw = 8.7 earthquakes on the Sumatra megathrust altered the state of stress over a large region surrounding the earthquakes. We evaluate the stress changes associated with coseismic and postseismic deformation following these two large events, focusing on postseismic...
The allometric relationship between resting metabolic rate and body mass in wild waterfowl (Anatidae) and an application to estimation of winter habitat requirements
M. R. Miller, J. McA Eadie
2006, Condor (108) 166-177
We examined the allometric relationship between resting metabolic rate (RMR; kJ day-1) and body mass (kg) in wild waterfowl (Anatidae) by regressing RMR on body mass using species means from data obtained from published literature (18 sources, 54 measurements, 24 species; all data from captive birds). There was no significant...
An introduced predator alters Aleutian Island plant communities by thwarting nutrient subsidies
J.L. Maron, J. A. Estes, D.A. Croll, E.M. Danner, S.C. Elmendorf, S.L. Buckelew
2006, Ecological Monographs (76) 3-24
The ramifying effects of top predators on food webs traditionally have been studied within the framework of trophic cascades. Trophic cascades are compelling because they embody powerful indirect effects of predators on primary production. Although less studied, indirect effects of predators may occur via routes that are not exclusively trophic....
Trace element geochemistry and surface water chemistry of the Bon Air coal, Franklin County, Cumberland Plateau, southeast Tennessee
S.A. Shaver, J.C. Hower, C.F. Eble, E.D. McLamb, K. Kuers
2006, International Journal of Coal Geology (67) 47-78
Mean contents of trace elements and ash in channel, bench-column, and dump samples of the abandoned Bon Air coal (Lower Pennsylvanian) in Franklin County, Tennessee are similar to Appalachian COALQUAL mean values, but are slightly lower for As, Fe, Hg, Mn, Na, Th, and U, and slightly higher for ash,...
Distribution of foraminifera in Pamlico Sound, North Carolina, over the past century
I.J. Abbene, S.J. Culver, D.R. Corbett, M.A. Buzas, L.S. Tully
2006, Journal of Foraminiferal Research (36) 135-151
Foraminiferal and radionuclide data have been used to investigate environmental change that has occurred within Pamlico Sound, North Carolina, over the last century. Environmental conditions were evaluated for three time slices; (1) the modern environment as determined by surficial (0-1 cm) sediments, (2) short-core intervals representing approximately 40 years BP,...
Industrial garnet
D.W. Olson
2006, Mining Engineering (58) 37
In 2005, US production of crude garnet concentrate for industrial use was 28.4 kt valued at $3.05 million. Refined garnet material sold or used was 30.4 kt valued at $10 million. For the year, the US was one of the world's leading consumers of industrial garnet. Domestic values for crude...