Application of organic geochemistry to coastal tar residues from central California
K.A. Kvenvolden, R.J. Rosenbauer, F. D. Hostettler, T.D. Lorenson
2000, International Geology Review (42) 1-14
Tar residues are common on the coastline of the Monterey Bay National Marine Sanctuary. These coastal tar residues have been washed ashore and usually occur on headlands near the high-tide line. In this study, 18 coastal tar residues were collected and analyzed to determine their carbon isotopic compositions and the...
Transformations in methane hydrates
I.-M. Chou, A. Sharma, R.C. Burruss, J. Shu, Ho-kwang Mao, R.J. Hemley, A.F. Goncharov, L.A. Stern, S. H. Kirby
2000, Proceedings of the National Academy of Sciences of the United States of America (97) 13484-13487
Detailed study of pure methane hydrate in a diamond cell with in situ optical, Raman, and x-ray microprobe techniques reveals two previously unknown structures, structure II and structure H, at high pressures. The structure II methane hydrate at 250 MPa has a cubic unit cell of a = 17.158(2) A??...
Spatial and temporal variability of picocyanobacteria Synechococcus sp. in San Francisco Bay
X. Ning, J. E. Cloern, B.E. Cole
2000, Limnology and Oceanography (45) 695-702
We collected samples monthly, from April to August 1998, to measure the abundance of autotrophic picoplankton in San Francisco Bay. Samples taken along a 160-km transect showed that picocyanobacteria (Synechococcus sp.) was a persistent component of the San Francisco Bay phytoplankton in all the estuarine habitats, from freshwater to seawater...
Bioavailability of particle-associated Se to the bivalve Potamocorbula amurensis
C.E. Schlekat, P.R. Dowdle, B.-G. Lee, S. N. Luoma, R.S. Oremland
2000, Environmental Science & Technology (34) 4504-4510
Elemental selenium, Se(0), is a prevalent chemical form in sediments, but little is known about its bioavailability. We evaluated the bioavailability of two forms of Se(0) by generating radioisotopic 75Se(0) through bacterial dissimilatory reduction of 75SeO32- by pure bacterial cultures (SES) and by an anaerobic sediment microbial consortium (SED). A...
Carbonate-shelf depositional environments of the Ordovician Viola formation in South-Central Kansas
K.D. Newell
2000, The Compass: Earth Science Journal of Sigma Gamma Epsilon (75) 90-100
The Upper Ordovician Viola Formation, an important petroleum reservoir in the Midcontinent, is a carbonate unit present over much of the subsurface in Kansas. The Viola is composed of two fining-upward sedimentary packages that are separated from each other by a minor karstic surface representing a brief period of exposure....
Spatial and temporal sensitivity of hydrogeomorphic response and recovery to deforestation, agriculture, and floods
F. A. Fitzpatrick, J.C. Knox
2000, Physical Geography (21) 89-108
Clear-cut logging followed by agricultural activity caused hydrologic and geomorphic changes in North Fish Creek, a Wisconsin tributary to Lake Superior. Hydro-geomorphic responses to changes in land use were sensitive to the location of reaches along the main stem and to the relative timing of large floods. Hydrologic and sediment-load...
Spawning, fertilization, and larval development of Potamocorbula amurensis (Mollusca: Bivalvia) from San Francisco Bay, California
M.H. Nicolini, D.L. Penry
2000, Pacific Science (54) 377-388
In Potamocorbula amurensis time for development to the straight-hinge larval stage is 48 hr at 15°C. Potamocorbula amurensis settles at a shell length of approximately 135 um 17 to 19 days after fertilization. Our observations of timing of larval development in P. amurensis support the hypothesis of earlier workers that...
Digital geologic map of Arizona: A digital database derived from the 1983 printing of the Wilson, Moore, and Cooper 1:500,000-scale map
Douglas M. Hirschberg, G. Stephen Pitts
2000, Open-File Report 2000-409
This report describes a digital geologic GIS database in an Arc/Info format for the “Geologic Map of Arizona” by Wilson and others (1983 edition)....
Preface – Groundwater and microbial processes
Barbara Bekins
2000, Hydrogeology Journal (8) 2-3
No abstract available....
Would ecological landscape restoration make the Bandelier Wilderness more or less of a wilderness?
C.A. Sydoriak, Craig D. Allen, Brian F. Jacobs
2000, U.S. Forest Service Proceedings RMRS-P-15-VOL-5
The purpose of this paper is to foster discussion on the basic issue of whether it is appropriate or not to intervene in designated wilderness areas that have been “trammeled by man” and, as a result, no longer retain their “primeval character and influence.” We explore this wilderness management dilemma...
Biomonitoring and ecotoxicology: Fish as indicators of pollution-induced stress in aquatic systems
L. Cleveland, J.F. Fairchild, E. E. Little
A. Gerhardt, editor(s)
2000, Book chapter
No abstract available....
Exposure of delta smelt to dissolved pesticides in 1998 and 1999
G. Edward Moon, Kathryn Kuivila, Catherine A. Ruhl, David H. Schoellhamer
2000, Interagency Ecological Program Newsletter (13) 27-33
Delta smelt is a threatened species in the San Francisco Bay Estuary. Pesticide toxicity is a possible cause for the need to list this fish (Bennett and Moyle 1996; Moyle and others 1996). Numerous pesticides are transported into the estuary from area rivers (MacCoy and others 1995). However, there are...
Gross functional anatomy: Integumentary system: Chapter 5
Diane G. Elliott
Gary K. Ostrander, editor(s)
2000, Book chapter, The laboratory fish
The integument or skin of a fish is the envelope for the body that separates and protects the animal from its environment, but it also provides the means through which most of the contacts with the outer world are made. The integument is continuous with...
Florida manatee now resident in the Bahamas
James P. Reid
2000, Sirenews (33) 7-8
In January 2000, both the Bahamas National Trust and the Save the Manatee Club received reports of a manatee at Bullocks Harbor, Great Harbour Cay, Bahamas. Under permit with the Bahamas’ Department of Fisheries, I visited Great Harbour Cay from 25 to 27 February 2000 to make a field assessment...
Paradise confounded: the status of Alaska's instream flow program. Review of "Annual Summary of Instream Flow Reservations and Protection in Alaska" by Christopher E. Estes
Nina Burkardt
2000, Rivers (7) 361-363
No abstract available....
Patterns of water-quality variability in San Francisco Bay during the first six years of the regional monitoring program, 1993-1998
J. E. Cloern, B.E. Cole, J.L. Edmunds, T.S. Schraga, A. Arnsberg
2000, Report, 1998 annual report, San Francisco estuary regional monitoring program for trace substances
Monitoring Results presents data from the Status and Trends portion of the 1998 San Francisco Estuary Regional Monitoring Program for Trace Substances (RMP). A list of reports on Pilot and Special Studies, as well as other RMP related activities can be found at the end of this document. These reports...
Floods, flood control, and bottomland vegetation
Jonathan M. Friedman, Gregor T. Auble
2000, Book chapter, Inland flood hazards: human, riparian and aquatic communities
Bottomland plant communities are typically dominated by the effects of floods. Floods create the surfaces on which plants become established, transport seeds and nutrients, and remove establish plants. Floods provide a moisture subsidy that allows development of bottomland forests in arid regions and produce anoxic soils, which can control bottomland...
Diversity, distribution, and conservation status of the native freshwater fishes of the southern United States
Melvin L. Warren Jr., Brooks M. Burr, Stephen J. Walsh, Henry L. Bart Jr., Robert C. Cashner, David A. Etnier, Byron J. Freeman, Bernard R. Kuhajda, Richard L. Mayden, Henry W. Robison, Stephen T. Ross, Wayne C. Starnes
2000, Fisheries (25) 7-31
The Southeastern Fishes Council Technical Advisory Committee reviewed the diversity, distribution, and status of all native freshwater and diadromous fishes across 51 major drainage units of the southern United States. The southern United States supports more native fishes than any area of comparable size on the North American continent north...
Bird use of stock ponds along the Rio Grande northwest of Laredo, Webb County, Texas, USA
M.C. Woodin, M.K. Skoruppa, G.C. Hickman
F. A. Comlin, J. A. Herrera, Javier Ramirez-Ramirez, editor(s)
2000, Book chapter, Limnology and aquatic birds: Monitoring, modelling and management
No abstract available....
Response of geese to aircraft disturbances
David H. Ward, Robert A. Stehn, Dirk V. Derksen
2000, Conference Paper, Effects of noise on wildlife conference (Terra Borealis no. 2)
Low-flying aircraft can affect behavior, physiology, and distribution of wildlife (Manci et al., 1988), and over time, may impact a population by reducing survival and reproductive performance. Thus, it is important to identify the particular aspects of overflights that affect animals so that management strategies can be developed to minimize...
The bedrock geology of Seattle
R. A. Haugerud, Peter J. Haeussler
2000, Northwest Geological Society Field Trip Guidebook Series 13
No abstract available....
Microsatellites: Evolutionary and methodological background and empirical applications at individual, population, and phylogenetic levels
Kim T. Scribner, John M. Pearce
Allan J. Baker, editor(s)
2000, Book chapter, Molecular methods in ecology
The recent proliferation and greater accessibility of molecular genetic markers has led to a growing appreciation of the ecological and evolutionary inferences that can be drawn from molecular characterizations of individuals and populations (Burke et al. 1992, Avise 1994). Different techniques have the ability to target DNA sequences which have...
Results of the Imager for Mars Pathfinder windsock experiment
Robert Sullivan, Ronald Greeley, Michael Kraft, Gregory Wilson, Matthew P. Golombek, Kenneth E. Herkenhoff, James Murphy, Peter Smith
2000, Journal of Geophysical Research E: Planets (105) 24547-24562
The Imager for Mars Pathfinder (IMP) windsock experiment measured wind speeds at three heights within 1.2 m of the Martian surface during Pathfinder landed operations. These wind data allowed direct measurement of near-surface wind profiles on Mars for the first time, including determination of aerodynamic roughness length and wind friction...
Constraints on a plume in the mid-mantle beneath the Iceland region from seismic array data
M.J. Pritchard, G.R. Foulger, B.R. Julian, J. Fyen
2000, Geophysical Journal International (143) 119-128
Teleseismic P waves passing through low-wave-speed bodies in the mantle are refracted, causing anomalies in their propagation directions that can be measured by seismometer arrays. Waves from earthquakes in the eastern Pacific and western North America arriving at the NORSAR array in Norway and at seismic stations in Scotland pass...
Information technology developments within the national biological information infrastructure
Gladys Cotter, Mike Frame
2000, Mathematics and Computers in Modern Science - Acoustics and Music, Biology and Chemistry, Business and Economics 206-211
Looking out an office window or exploring a community park, one can easily see the tremendous challenges that biological information presents the computer science community. Biological information varies in format and content depending whether or not it is information pertaining to a particular species (i.e. Brown Tree Snake), or a...
