Rank enhancement of Permian Barakar and Raniganj coal measures in the western part of the Sohagpur Coalfield, Madhya Pradesh, India
Abhijit Mukhopadhyay, S. Adhikari, S.P. Roy, S. Bhattacharya, Peter D. Warwick, Robert C. Milici, E.R. Landis
2001, Conference Paper, Proceedings of the national seminar on recent advances in geology and lignite basins of India (Geological Survey of India Special Publication no. 54)
No abstract available....
The effects of timber harvesting on the structure and composition of adjacent old-growth coast redwood forest, California, USA
William H. Russell, C. Jones
2001, Landscape Ecology (16) 731-741
Data collected across timber harvest boundaries on nine sites within the Redwood National and State Park management area in California, USA, were used to estimate the effective size of old-growth coast redwood preserves. Fourteen variables related to stand structure and composition, wildlife habitat, and physical environment were significantly correlated to...
Petrographic and geochemical evidence for the formation of primary, bacterially induced lacustrine dolomite: La Roda 'white earth' (Pliocene, Central Spain)
Del Garcia, M.A. Cura, J. P. Calvo, S. Ordonez, B.F. Jones, J.C. Canaveras
2001, Sedimentology (48) 897-915
Upper Pliocene dolomites ('white earth') from La Roda, Spain, offer a good opportunity to evaluate the process of dolomite formation in lakes. The relatively young nature of the deposits could allow a link between dolomites precipitated in modern lake systems and those present in older lacustrine formations. The La Roda...
Seasonal and event-scale variations in solute chemistry for four Sierra Nevada catchments
J.M. Holloway, R.A. Dahlgren
2001, Journal of Hydrology (250) 106-121
Hydrobiogeochemical processes controlling stream water chemistry were examined in four small (<5 km2) catchments having contrasting bedrock lithologies in the western Sierra Nevada foothills of California. The Mediterranean climate with its cool/wet and hot/dry cycle produces strong seasonal patterns in hydrological, biological and geochemical processes. Stream water solutes fall into...
Spectroscopic evidence for ternary surface complexes in the lead(II)-malonic acid-hematite system
J.J. Lenhart, J.R. Bargar, J.A. Davis
2001, Journal of Colloid and Interface Science (234) 448-452
Using extended X-ray absorption fine structure (EXAFS) and attenuated total reflectance Fourier-transform infrared (ATR-FTIR) measurements, we examined the sorption of Pb(II) to hematite in the presence of malonic acid. Pb LIII-edge EXAFS measurements performed in the presence of malonate indicate the presence of...
Estimation of brood and nest survival: Comparative methods in the presence of heterogeneity
Bryan F.J. Manly, Joel A. Schmutz
2001, Journal of Wildlife Management (65) 258-270
The Mayfield method has been widely used for estimating survival of nests and young animals, especially when data are collected at irregular observation intervals. However, this method assumes survival is constant throughout the study period, which often ignores biologically relevant variation and may lead to biased survival estimates. We examined...
Effects of gull predation and weather on survival of emperor goose goslings
Joel A. Schmutz, Bryan F.J. Manly, Christian P. Dau
2001, Journal of Wildlife Management (65) 248-257
Numbers of emperor geese (Chen canagica) have remained depressed since the mid-1980s. Despite increases in glaucous gulls (Larus hyperboreus), a primary predator of goslings, little information existed to assess whether recent patterns of gosling survival have been a major factor affecting population dynamics. We used observations of known families of...
Humboldt River main stem, Nevada
Eric Warmath, Rose L. Medina
2001, Report
This data set contains the main stem of the Humboldt River as defined by Humboldt Project personnel of the U.S. Geological Survey Nevada District, 2001. The data set was digitized on screen using digital orthophoto quadrangles from 1994....
Topography and flooding of coastal ecosystems on the Yukon-Kuskokwim Delta, Alaska: Implications for sea level rise
Torre Jorgenson, Craig R. Ely
2001, Journal of Coastal Research (17) 124-136
We measured surface elevations, stage of annual peak flooding, and sedimentation along 10 toposequences across coastal ecosystems on the Yukon-Kuskokwim (Y-K) Delta in western Alaska during 1994-1998 to assess some of the physical processes affecting ecosystem distribution. An ecotype was assigned to each of 566 points, and differences in elevations...
Comparison of methods used to estimate numbers of walruses on sea ice
Mark S. Udevitz, James R. Gilbert, Gennadii A. Fedoseev
2001, Marine Mammal Science (17) 601-616
The US and former USSR conducted joint surveys of Pacific walruses on sea ice and at land haul-outs in 1975, 1980, 1985, and 1990. One of the difficulties in interpreting results of these surveys has been that, except for the 1990 survey, the Americans and Soviets used different methods for...
Methods used to create the North American soil organic Carbon digital database— Assessment methods for soils C pools
R. Lacelle, S. Waltman, N.B. Bliss, F. Orozco-Chavez
2001, Book chapter, Assessment methods for soil carbon
No abstract available....
Mars Global Surveyor observations of Martian fretted terrain
M. H. Carr
2001, Journal of Geophysical Research E: Planets (106) 23571-23593
The Martian fretted terrain between latitudes 30° and 50°N and between 315° and 360°W has been reexamined in light of new Mars Orbiter Camera (MOC) and Mars Orbiter Laser Altimeter (MOLA) data from Mars Global Surveyor. Much of the terrain in the 30°–50° latitude belt in both hemispheres has a...
Thermal signature, eruption style, and eruption evolution at Pele and Pillan on Io
A. G. Davies, L. P. Keszthelyi, D.A. Williams, C. B. Phillips, A. S. McEwen, R. M. C. Lopes, W. D. Smythe, L.W. Kamp, L.A. Soderblom, R. W. Carlson
2001, Journal of Geophysical Research E: Planets (106) 33079-33103
The Galileo spacecraft has been periodically monitoring volcanic activity on Io since June 1996, making it possible to chart the evolution of individual eruptions. We present results of coanalysis of Near-Infrared Mapping Spectrometer (NIMS) and solid-state imaging (SSI) data of eruptions at Pele and Pillan, especially from a particularly illuminating...
A field and statistical modeling study to estimate irrigation water use at Benchmark Farms study sites in southwestern Georgia, 1995-96
Julia L. Fanning, Gregory E. Schwarz, William C. Lewis
2001, Water-Resources Investigations Report 2000-4292
A benchmark irrigation monitoring network of farms located in a 32-county area in southwestern Georgia was established in 1995 to improve estimates of irrigation water use. A stratified random sample of 500 permitted irrigators was selected from a data base--maintained by the Georgia Department of Natural Resources, Georgia Environmental Protection...
Methyl t-Butyl Ether Mineralization in Surface-Water Sediment Microcosms under Denitrifying Conditions
P. M. Bradley, F. H. Chapelle, J. E. Landmeyer
2001, Applied and Environmental Microbiology (67) 1975-1978
Mineralization of [U-14C] methyl t-butyl ether (MTBE) to 14CO2 without accumulation of t-butyl alcohol (TBA) was observed in surface-water sediment microcosms under denitrifying conditions. Methanogenic activity and limited transformation of MTBE to TBA were observed in the absence of denitrification. Results indicate that bed sediment microorganisms can effectively degrade MTBE...
Water quality and occurrence of methyl-tert butyl ether (MTBE) and other fuel related compounds in lakes and ground water at lakeside communities in Sussex and Morris Counties, New Jersey, 1998-1999
Arthur L. Baehr, Timothy J. Reilly
2001, Water-Resources Investigations Report 2001-4149
Densely populated communities surround many of the larger lakes in northwestern New Jersey. These communities derive most of their water supply from wells. The lakes can be navigated by gasoline-powered watercraft, can be in various stages of eutrophication, may contain pathogens associated with bathing and waterfowl, and are periodically subjected...
Spatial analysis on the occurrence of Pneumocystis carinii in the shrew Notiosorex crawfordi in fragmented landscape in southern California
Juha Laakkonen, Robert N. Fisher, Ted J. Case
2001, Journal of Eukaryotic Microbiology (48) 111s-112s
No abstract available....
Methyl tert-butyl ether biodegradation by indigenous aquifer microorganisms under natural and artificial oxic conditions
J. E. Landmeyer, F. H. Chapelle, H.H. Herlong, P. M. Bradley
2001, Environmental Science & Technology (35) 1118-1126
Microbial communities indigenous to a shallow groundwater system near Beaufort, SC, degraded milligram per liter concentrations of methyl tert-butyl ether (MTBE) under natural and artificial oxic conditions. Significant MTBE biodegradation was observed where anoxic, MTBE-contaminated groundwater discharged to a concrete-lined ditch. In the anoxic groundwater adjacent to the...
Relation between fish communities and riparian zone conditions at two spatial scales
K. E. Lee, R. M. Goldstein, P. E. Hanson
2001, Journal of the American Water Resources Association (37) 1465-1473
The relation offish community composition to riparian cover at two spatial scales was compared at 18 streams in the agricultural Minnesota River Basin. The two spatial scales were: (1) local riparian zone (a 200 meter wide buffer extending 2 to 3 kilometers upstream of the sampling reach); and (2) the...
The Hawai'i rare bird search 1994-1996
Michelle H. Reynolds, Thomas J. Snetsinger
2001, Studies in Avian Biology (22) 133-143
We compiled the recent history of sightings and searched for 13 rare and missing Hawaiian forest birds to update status and distribution information. We made 23 expeditions between August 1994 and April 1996 on the islands of Hawai‘i, Maui, Moloka‘i, and Kaua‘i totaling 1,685 search hours, 146 field days, and...
Drepanidine movements in relation to food availability in subalpine woodland on Mauna Kea, Hawai'i
Steven C. Hess, Paul C. Banko, Michelle H. Reynolds, Gregory J. Brenner, Leona P. Laniawe, James D. Jacobi
2001, Studies in Avian Biology (22) 154-163
Flowers of the mamane tree (Sophoru chrysophylla) are the primary nectar source for Hawaiian honeycreepers in subalpine woodland on Mauna Kea Volcano on the island of Hawai‘i. Mamane seeds are the primary food resource of the endangered Palila (Loxioides bailleui), which is now restricted to subalpine woodland on Mauna Kea....
Constants for mercury binding by organic matter isolates from the Florida Everglades
J.M. Benoit, R.P. Mason, C.C. Gilmour, G. R. Aiken
2001, Geochimica et Cosmochimica Acta (65) 4445-4451
Dissolved organic matter (DOM) has been implicated as an important complexing agent for Hg that can affect its mobility and bioavailability in aquatic ecosystems. However, binding constants for natural Hg-DOM complexes are not well known. We employed a competitive ligand approach to estimate conditional stability constants for Hg complexes...
Gila Cliff Dwellings National Monument, southwestern New Mexico
James C. Ratte
2001, Report
Citizen knowledge of and attitudes toward black-tailed prairie dogs: Completion report
B. L. Lamb, Kurt Cline, Ayeisha Brinson, N.R. Sexton, P.D. Ponds
2001, Open-File Report 2001-471
In the late summer of 2000, we canvassed a random sample of residents in the 11-sate short grass prairie region of the United States. We asked about people's attitude toward and knowledge of black-tailed prairie dogs and their management. The survey received 1,933 useable responses with a response rate of...
Influence of surface-normal ground acceleration on the initiation of the Jih-Feng-Erh-Shan landslide during the 1999 Chi-Chi, Taiwan, earthquake
C.-C. Huang, Y.-H. Lee, Huaibao P. Liu, D. K. Keefer, R.W. Jibson
2001, Bulletin of the Seismological Society of America (91) 953-958
The 1999 Chi-Chi, Taiwan, earthquake triggered numerous landslides throughout a large area in the Central Range, to the east, southeast, and south of the fault rupture. Among them are two large rock avalanches, at Tsaoling and at Jih-Feng-Erh-Shan. At Jih-Feng-Erh-Shan, the entire thickness (30-50 m) of the Miocene Changhukeng Shale...
