Fault interactions and large complex earthquakes in the Los Angeles area
Greg Anderson, Brad T. Aagaard, Ken Hudnut
2003, Science (302) 1946-1949
Faults in complex tectonic environments interact in various ways, including triggered rupture of one fault by another, that may increase seismic hazard in the surrounding region. We model static and dynamic fault interactions between the strike-slip and thrust fault systems in southern California. We find that rupture of the Sierra...
Sand ridges off Sarasota, Florida: A complex facies boundary on a low-energy inner shelf environment
D. Twichell, Gillian L. Brooks, G. Gelfenbaum, V. Paskevich, Brian Donahue
2003, Marine Geology (200) 243-262
The innermost shelf off Sarasota, Florida was mapped using sidescan-sonar imagery, seismic-reflection profiles, surface sediment samples, and short cores to define the transition between an onshore siliciclastic sand province and an offshore carbonate province and to identify the processes controlling the distribution of these distinctive facies. The transition between these...
Oxygen isotopes in nitrate: New reference materials for 18O:17O:16O measurements and observations on nitrate-water equilibration
J.K. Böhlke, S.J. Mroczkowski, T.B. Coplen
2003, Rapid Communications in Mass Spectrometry (17) 1835-1846
Despite a rapidly growing literature on analytical methods and field applications of O isotope-ratio measurements of NO3− in environmental studies, there is evidence that the reported data may not be comparable because reference materials with widely varying δ18O values have not been readily available. To address this problem, we prepared...
Catastrophic rock-ice collapse and rapid shove of the Kukurtli glacier (Elbrus Volcano, Northern Caucasus) in first and second centuries
O.A. Bogatikov, I.V. Melekestsev, D.K. Miller, A.G. Gurbanov, P. W. Lipman, J.B. Lovenstern, L.D. Sulerzhitskii, A.V. Shevchenko
2003, Doklady Earth Sciences (391) 627-630
No abstract available....
Lessons from monitoring water quality in San Francisco Bay
J. E. Cloern, T.S. Schraga, C.B. Lopez, R. Labiosa
2003, Report
San Francisco Bay is the defining landscape feature of the place we call ‘The Bay Area,’ but most of us only experience the Bay as we view it from an airplane window or drive across one of its bridges. These views from afar suggest that the Bay is static and...
Continuous monitoring of suspended sediment discharge in rivers by use of optical backscatterance sensors
D. H. Schoellhamer, S.A. Wright
2003, Book chapter, Erosion and sediment transport measurement: Technological and methodological advances: International Association for Hydrological Science Publication 283
No abstract available....
Sediment dynamics drive contaminant dynamics
David H. Schoellhamer, Gregory Shellenbarger, Neil K. Ganju, Jay A. Davis, Lester J. McKee
2003, Pulse of the Estuary 2003
Many contaminants of greatest concern in San Francisco Bay, including mercury and PCBs, are primarily associated with sediment particles rather than dissolved in water. Therefore, the movement and fate of sediment determines the movement and fate of many contaminants in the Bay. Because of this close association, the RMP monitors...
A bathymetry system for measuring sediment accumulation in tidal marsh restoration projects
John Y. Takekawa, S. Demers, I. Woo, N.D. Athearn, N. Ganju, G.G. Shellenbarger, D. Schoellhamer, W.M. Perry
2003, Conference Paper, Proceedings of the 6th biennial State-of-the-Estuary Conference
No abstract available....
Compensatory mechanisms in Great Lakes sea lamprey populations: implications for alternative control strategies
Michael L. Jones, R.A. Bergstedt, Michael B. Twohey, Michael F. Fodale, Douglas W. Cuddy, Jeffrey W. Slade
2003, Journal of Great Lakes Research (29) 113-129
Compensatory mechanisms are demographic processes that tend to increase population growth rates at lower population density. These processes will tend to reduce the effectiveness of actions that use controls on reproductive success to suppress sea lamprey (Petromyzon marinus), an economically important pest in the Great Lakes. Historical evidence for compensatory...
Habitat heterogeneity on a forest-savanna ecotone in Noel Kempff Mercado National Park (Santa Cruz, Bolivia)—implications for the long-term conservation of biodiversity in a changing climate
T.J. Killeen, T.M. Siles, T. Grimwood, L.L. Tieszen, M.K. Steininger, C.J. Tucker, S. Panfil
G.A. Bradshaw, P.A. Marquet, K.L. Ronnenberg, editor(s)
2003, Book chapter, How landscapes change— Human disturbance and ecosystem fragmentation in the Americas
No abstract available....
Remote sensing phenology
B. C. Reed, M. White, Jesslyn F. Brown
M.D. Schwartz, editor(s)
2003, Book chapter, Phenology— An integrative environmental science
No abstract available....
Is disease increasing or decreasing, and does it impact or maintain biodiversity?
K. D. Lafferty
2003, Journal of Parasitology (89) S101-S105
Protozoal and epitheliocystis-like infections in the introduced bluestripe snapper (Lutjanus kasmira) in Hawaii
Thierry M. Work, Robert Rameyer, Geraldine Takata, Michael L. Kent
2003, Diseases of Aquatic Organisms (57) 59-66
The bluestripe snapper, or taape, was introduced into Hawaii in the 1950s and has since become very abundant throughout the archipelago. As part of a health survey of reef fish in Hawaii, we necropsied 120 taape collected from various coastal areas south of Oahu and examined fish histology for extraintestinal...
The ecology and impact of the invasion of Lake Ontario by the zebra mussel (Dreissena polymorpha) and quagga mussel (D. bugensis)
T.L. Negley, E.L. Mills, B. Baldwin, R. O'Gorman, R.W. Owens
M. Munawar, editor(s)
2003, Book chapter, The state of Lake Ontario: past, present and future
In this chapter we present a detailed description of the zebra and quagga mussel invasion in Lake Ontario, with specific emphasis on: (1) the development of the Dreissena populations in Lake Ontario, (2) previously unreported data from 1997 and 1998 for Dreissena populations at Nine-Mile Point in Lake Ontario, (3)...
Flood flows, leaf breakdown, and plant-available nitrogen on a dryland river floodplain
Douglas C. Andersen, S. Mark Nelson, Dan Binkley
2003, Wetlands (23) 180-189
We tested the hypothesis that decomposition in flood-inundated patches of riparian tree leaf litter results in higher plant-available nitrogen in underlying, nutrient-poor alluvium. We used leafpacks (n = 56) containing cottonwood (Populus deltoides ssp. wislizenii) leaf litter to mimic natural accumulations of leaves in an experiment conducted on the Yampa...
Flyingfish spawning (Parexocoetus brachypterus) in the northeastern Gulf of Mexico
Philip W. Stevens, C.K. Bennett, J.J. Berg
2003, Environmental Biology of Fishes (67) 71-76
Abstract not supplied at this time...
Effects of contaminated dredge spoils on wetland plant communities: A literature review
Paul M. Stewart, Eric L. Garza, Jason T. Butcher
Thomas P. Simon, editor(s)
2003, Book chapter, Biological response signatures: Indicator patterns using aquatic communities
Contaminated dredge spoil is a national concern due to its scope and effects on biota, water quality, and the physical environment. This literature review discusses the effects of contaminated dredge spoils on wetland plant communities. Plant communities naturally shift over time with changing environmental conditions. Addition of toxins and nutrients...
Application of ecological criteria in selecting marine reserves and developing reserve networks
Callum M. Roberts, George Branch, Rodrigo H. Bustamante, Juan Carlos Castilla, Jenifer Dugan, Benjamin S. Halpern, Kevin D. Lafferty, Heather Leslie, Deborah McArdle, Mary Ruckelshaus, Robert R. Warner
2003, Ecological Applications (13) 215-228
Marine reserves are being established worldwide in response to a growing recognition of the conservation crisis that is building in the oceans. However, designation of reserves has been largely opportunistic, or protective measures have been implemented (often overlapping and sometimes in conflict) by different entities seeking to achieve different ends....
Large woody debris and flow resistance in step-pool channels, Cascade Range, Washington
Janet H. Curran, Ellen E. Wohl
2003, Geomorphology (51) 141-157
Total flow resistance, measured as Darcy-Weisbach f, in 20 step-pool channels with large woody debris (LWD) in Washington, ranged from 5 to 380 during summer low flows. Step risers in the study streams consist of either (1) large and relatively immobile woody debris, bedrock, or roots that form fixed, or...
Wildlife mortality on Highway U.S. 441 across Paynes Prairie, Alachua County, Florida
L. L. Smith, C.K. Dodd Jr.
2003, Florida Scientist (66) 128-140
Abstract not supplied at this time...
Setting priorities for conserving and rehabilitating Detroit River habitats
Bruce A. Manny
John H. Hartig, editor(s)
2003, Book chapter, Honoring our Detroit River: Caring for our home
This chapter discusses habitat for wild animals and plants in the Detroit River. Such habitat has been defined as places in the river where physical, chemical, and biological factors, including soil and water quality sustain all life stages of fish and wildlife, including their reproduction....
Hyla gratiosa (barking treefrog) intestinal hernia
J.C. Mitchell, D. E. Green
2003, Herpetological Review (34) 230-231
Deformities and malformations in anurans occur in a variety of manifestations (Meteyer 2000. Field Guide to Malformations of Frogs and Toads with Radiographic Interpretations. Biol. Sci. Rep., USGS/BRD/BSR-2000-0005, 18 pp.). Most of those described in the literature are visible externally (e.g., ectromelia, brachydactyly, polydactyly, brachygnathia, kyphosis) (Ouellet et al. 1997....
Estimating lake-wide abundance of spawning-phase sea lampreys (Petromyzon marinus) in the Great Lakes: extrapolating from sampled streams using regression models
Katherine M. Mullett, John W. Heinrich, Jean V. Adams, Robert J. Young, Mary P. Henson, Rodney B. McDonald, Michael F. Fodale
2003, Journal of Great Lakes Research (29) 240-252
Lake-wide abundance of spawning-phase sea lampreys (Petromyzon marinus) can be used as one means to evaluate sea lamprey control efforts in the Great Lakes. Lake-wide abundance in each Great Lake was the sum of estimates for all streams thought to contribute substantial numbers of sea lampreys. A subset of these...
The effects of bird use on nutrient removal in a constructed wastewater-treatment wetland
D.C. Andersen, J.J. Sartoris, J.S. Thullen, P.G. Reusch
2003, Wetlands (23) 423-435
A 9.9-ha constructed wetland designed to reduce nitrogen in municipal wastewater following conventional secondary treatment began operating in southern California's San Jacinto Valley in September 1994. The wetland incorporated zones of bulrush (Schoenoplectus acutus and S. californicus) for effluent treatment, plus areas of 1.8-m deep open water and other features...
Conservation of North American stream amphibians
P.S. Corn, R.B. Bury, E.J. Hyde
R. Semlitsch, editor(s)
2003, Book chapter, Amphibian conservation
Abstract has not been submitted...
