Evolutionary stability of mutualism: interspecific population regulation as an evolutionarily stable strategy
J. Nathaniel Holland, Donald L. DeAngelis, Stewart T. Schultz
2004, Proceedings of the Royal Society B (271) 1807-1814
Interspecific mutualisms are often vulnerable to instability because low benefit : cost ratios can rapidly lead to extinction or to the conversion of mutualism to parasite–host or predator–prey interactions. We hypothesize that the evolutionary stability of mutualism can depend on how benefits and costs to one mutualist vary with the...
Integrating digital information for coastal and marine sciences
Fausto Marincioni, Frances L. Lightsom, Rebecca L. Riall, Guthrie A. Linck, Thomas C. Aldrich, Michael J. Caruso
2004, Journal of Digital Information Management (2) 132-141
A pilot distributed geolibrary, the Marine Realms Information Bank (MRIB), was developed by the U.S. Geological Survey Coastal and Marine Geology Program and the Woods Hole Oceanographic Institution, to classify, integrate, and facilitate access to scientific information about oceans, coasts, and lakes. The MRIB is composed of a categorization scheme,...
Where in the world are my field plots? Using GPS effectively in environmental field studies
Chris E. Johnson, Christopher C. Barton
2004, Frontiers in Ecology and the Environment (2) 475-482
Global positioning system (GPS) technology is rapidly replacing tape, compass, and traditional surveying instruments as the preferred tool for estimating the positions of environmental research sites. One important problem, however, is that it can be difficult to estimate the uncertainty of GPS-derived positions. Sources of error include various satellite- and...
Liquefaction-induced lateral spreading in Oceano, California, during the 2003 San Simeon Earthquake
Thomas L. Holzer, Thomas E. Noce, Michael J. Bennett, Carola Di Alessandro, John Boatwright, John C. Tinsley III, Russell W. Sell, Lewis I. Rosenberg
2004, Open-File Report 2004-1269
The December 22, 2003, San Simeon, California, (M6.5) earthquake caused damage to houses, road surfaces, and underground utilities in Oceano, California. The community of Oceano is approximately 50 miles (80 km) from the earthquake epicenter. Damage at this distance from a M6.5 earthquake is unusual. To understand the causes of...
Suspended sediment and hydrodynamics above mildly sloped long wave ripples
Yeon S. Chang, Daniel M. Hanes
2004, Journal of Geophysical Research C: Oceans (109)
We investigate the spatial and temporal distribution of suspended sediment and the associated hydrodynamics over mildly sloped long wave ripples on the inner shelf. These bedforms had wavelengths of approximately 1 m and heights of approximately 5 cm, in a mean water depth of 4 m. The vertical and temporal...
Seismic reflection and refraction data acquired in Canada Basin, Northwind Ridge and Northwind Basin, Arctic Ocean in 1988, 1992 and 1993
Arthur Grantz, Patrick E. Hart, Steven D. May
2004, Open-File Report 2004-1243
Seismic reflection and refraction data were collected in generally ice-covered waters of the Canada Basin and the eastern part of the Chukchi Continental Borderland of the Amerasia Basin, Arctic Ocean, during the late summers of 1988, 1992, and 1993. The data were acquired from a Polar class icebreaker, the U.S....
Estimates of median flows for streams on the 1999 Kansas Surface Water Register
Charles A. Perry, David M. Wolock, Joshua C. Artman
2004, Scientific Investigations Report 2004-5032
The Kansas State Legislature, by enacting Kansas Statute KSA 82a?2001 et. seq., mandated the criteria for determining which Kansas stream segments would be subject to classification by the State. One criterion for the selection as a classified stream segment is based on the statistic of median flow being equal to...
Geophysical data reveal the crustal structure of the Alaska range orogen within the aftershock zone of the Mw 7.9 Denali fault earthquake
M. A. Fisher, N. Ratchkovski, Warren Nokleberg, Louise Pellerin, Jonathan M.G. Glen
2004, Bulletin of the Seismological Society of America (94) S107-S131
Geophysical information, including deep-crustal seismic reflection, magnetotelluric (mt), gravity, and magnetic data, cross the aftershock zone of the 3 November 2002 Mw 7.9 Denali fault earthquake. These data and aftershock seismicity, jointly interpreted, reveal the crustal structure of the right-lateral-slip Denali fault and the eastern Alaska Range orogen, as well as...
Surficial geologic map of the southwest Memphis Quadrangle, Shelby County, Tennessee, and Crittenden County, Arkansas
David W. Moore, Sharon F. Diehl
2004, Scientific Investigations Map 2823
This map is one of seven 1:24,000-scale (7.5-minute) quadrangle maps of the surficial geology of the Memphis, Tennessee, area--part of a series of urban hazard maps. Wind-deposited silt and clayey silt (loess) is the predominant surficial deposit...
A new coccidian parasite, Isospora samoaensis, from the Wattled Honeyeater (Foulehaio carunculata) from American Samoa
Kelly J. Adamczyk, Thomas E. McQuistion, Dennis LaPointe
2004, Acta Protozoologica (43) 179-181
A new species of Isospora is described from the feces of the wattled honeyeater, Foulehaio carunculata from American Samoa. Numerous oocysts of similar morphology were found in a single adult wattled honeyeater. Sporulated oocysts are ovoid, 28.9 × 26.1 (25-32 × 23-30) µm, with a smooth, colorless, bilayered wall; the...
Estimates of hydraulic properties from a one-dimensional numerical model of vertical aquifer-system deformation, Lorenzi site, Las Vegas, Nevada
Michael T. Pavelko
2004, Water-Resources Investigations Report 2003-4083
Land subsidence related to aquifer-system compaction and ground-water withdrawals has been occurring in Las Vegas Valley, Nevada, since the 1930's, and by the late 1980's some areas in the valley had subsided more than 5 feet. Since the late 1980's, seasonal artificial-recharge programs have lessened the effects of summertime pumping...
Limiting spread of a unicolonial invasive insect and characterization of seasonal patterns of range expansion
Paul D. Krushelnycky, Lloyd L. Loope, Stephanie M. Joe
2004, Biological Invasions (6) 47-57
Limiting dispersal is a fundamental strategy in the control of invasive species, and in certain situations containment of incipient populations may be an important management technique. To test the feasibility of slowing the rapid spread of two Argentine ant (Linepithema humile) supercolonies in Haleakala National Park, Hawaii, we...
Patterns of magma flow in segmented silicic dikes at Summer Coon volcano, Colorado: AMS and thin section analysis
Michael P. Poland, Jonathan H. Fink, Lisa Tauxe
2004, Earth and Planetary Science Letters (219) 155-169
A complex pattern of magma flow is found in two silicic dikes of a radial swarm at Summer Coon, an eroded stratovolcano in southern Colorado. The two intrusions are broken into multiple segments that suggest vertical dike propagation. However, anisotropy of magnetic susceptibility (AMS) measurements and thin section observations suggest...
Status of ground-water levels and storage volume in the Equus Beds aquifer near Wichita, Kansas, January 2000-January 2003
Cristi V. Hansen, Walter R. Aucott
2004, Water-Resources Investigations Report 2003-4298
The Equus Beds aquifer northwest of Wichita, Kansas, was developed to supply water to Wichita residents and for irrigation in south-central Kansas beginning on September 1, 1940. Ground-water pumping for city and agricultural use from the aquifer caused water levels to decline in a large part of the area. Irrigation...
Paleozoic sedimentary rocks in the Red Dog Zn-Pb-Ag district and vicinity, western Brooks Range, Alaska: provenance, deposition, and metallogenic significance
John F. Slack, Julie A. Dumoulin, J.M. Schmidt, L. E. Young, Cameron Rombach
2004, Economic Geology (99) 1385-1414
Geochemical analyses of Paleozoic sedimentary rocks in the western Brooks Range reveal a complex evolutionary history for strata surrounding the large Zn-Pb-Ag deposits of the Red Dog district. Data for major elements, trace elements, and rare earth elements (REE) were obtained on 220 samples of unaltered and unmineralized siliciclastic rocks...
Nature of hydrothermal fluids at the shale-hosted Red Dog Zn-Pb-Ag deposits, Brooks Range, Alaska
David L. Leach, Erin E. Marsh, Poul Emsbo, Cameron Rombach, Karen D. Kelley, Michael W. Anthony
2004, Economic Geology (99) 1449-1480
The Red Dog Zn-Pb-Ag district in the western Brooks Range, northern Alaska, contains numerous shale-hosted Zn-Pb sulfide and barite deposits in organic-rich siliceous mudstone and shale, chert, and carbonate rocks of the Carboniferous Kuna Formation. The giant Red Dog shale-hosted deposits consist of a cluster of four orebodies (Main, Qanaiyaq,...
Structure of the Red Dog District, western Brooks Range, Alaska
Jean-Pierre P. de Vera, K. R. McClay
2004, Economic Geology (99) 1415-1434
The Red Dog district of the western Brooks Range of northern Alaska, which includes the sediment-hosted Zn-Pb-Ag ± Ba deposits at Red Dog, Su-Lik, and Anarraaq, contains one of the world's largest reserves of zinc. This paper presents a new model for the structural development of the area and shows...
Inhibition of acetoclastic methanogenesis in crude oil- and creosote-contaminated groundwater
Ean Warren, Barbara A. Bekins, E. Michael Godsy, Virginia K. Smith
2004, Bioremediation Journal (8) 1-11
Results from a series of studies of methanogenic processes in crude oil- and creosote-contaminated aquifers indicate that acetoclastic methanogenesis is inhibited near non-aqueous sources. At a crude oil-contaminated site, numbers of acetoclastic methanogens found close to crude oil were one hundred times fewer than those of hydrogen- and formate-utilizing methanogens....
Sampling issues affecting accuracy of likelihood-based classification using genetical data
B. Guinand, K.T. Scribner, A. Topchy, K.S. Page, W. Punch, M. K. Burnham-Curtis
2004, Environmental Biology of Fishes (69) 245-259
We demonstrate the effectiveness of a genetic algorithm for discovering multi-locus combinations that provide accurate individual assignment decisions and estimates of mixture composition based on likelihood classification. Using simulated data representing different levels of inter-population differentiation (Fst ~ 0.01 and 0.10), genetic diversities (four or eight alleles per locus), and...
Manatees as sentinels of marine ecosystem health: are they the 2000-pound canaries?
R. K. Bonde, A.A. Aguirre, J. Powell
2004, EcoHealth (1) 255-262
The order Sirenia is represented by three species of manatees and one species of dugong distributed in tropical and subtropical regions of the world and considered vulnerable to extinction. The sentinel species concept is useful to identify indicators of the environment and may reflect the quality of health in marine...
Ground-water pumpage and artificial recharge estimates for calendar year 2000 and average annual natural recharge and interbasin flow by hydrographic area, Nevada
Thomas J. Lopes, David M. Evetts
2004, Scientific Investigations Report 2004-5239
Nevada's reliance on ground-water resources has increased because of increased development and surface-water resources being fully appropriated. The need to accurately quantify Nevada's water resources and water use is more critical than ever to meet future demands. Estimated ground-water pumpage, artificial and natural recharge, and interbasin flow can be used...
Discrimination among spawning aggregations of lake herring from Lake Superior using whole-body morphometric characters
Michael H. Hoff
2004, Journal of Great Lakes Research (30) 385-394
The lake herring (Coregonus artedi) was one of the most commercially and ecologically valuable Lake Superior fishes, but declined in the second half of the 20th century as the result of overharvest of putatively discrete stocks. No tools were previously available that described lake herring stock structure and accurately classified...
Diclofenac residues as the cause of vulture population decline in Pakistan
J.L. Oaks, M. Gilbert, M.Z. Virani, R.T. Watson, C.U. Meteyer, B.A. Rideout, H. L. Shivaprasad, S. Ahmed, M.J.I. Chaudhry, M. Arshad, S. Mahmood, A. Ali, A.A. Khan
2004, Nature (427) 630-633
The Oriental white-backed vulture (OWBV; Gyps bengalensis) was once one of the most common raptors in the Indian subcontinent1. A population decline of >95%, starting in the 1990s, was first noted at Keoladeo National Park, India2. Since then, catastrophic declines, also involving Gyps indicus and Gyps tenuirostris, have continued to be reported across the...
Use of Instream Flow Incremental Methodology: introduction to the special issue
Berton Lee Lamb, C. Sabaton, Y. Souchon
2004, Hydroécologie Appliquée (14) 1-7
In 1991, Harvey Doerksen was able to write a memoir discussing 20 years of instream flow work (Doerksen 1991). He recalled coming into the field in about 1973, but points out that there were many dedicated professionals working on the front line of what has become known as the environmental...
Rabies in a captive colony of big brown bats (Eptesicus fuscus)
V. Shankar, R. A. Bowen, A. D. Davis, C. E. Rupprecht, T. J. O'Shea
2004, Journal of Wildlife Diseases (40) 403-413
Our research has focused on the ecology of commensal populations of big brown bats (Eptesicus fuscus) in Fort Collins, Colorado (USA), in relation to rabies virus (RV) transmission. We captured 35 big brown bats (Eptesicus fuscus) in late summer 2001 and held them captive for 4.8 mo. The bats were...
