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Page 4997, results 124901 - 124925

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Differences in in vivo fluorescence yield between three phytoplankton size classes
Andrea E. Alpine, James E. Cloern
1985, Journal of Plankton Research (7) 381-390
The size-dependent relationship between in vivo fluorescence (IVF) and chlorophyll a was determined for monthly phytoplankton samples from the San Francisco Bay estuary. Chlorophyll a and IVF were both measured on netplankton (>22 μm), nanoplankton (5–22 μm), and ultraplankton (<5 μm) samples that were separated with screens. IVF and chlorophyll a were linearly related for each size class,...
Effect of adherent bacteria and bacterial extracellular polymers upon assimilation by Macoma balthica of sediment-bound Cd, Zn and Ag
Ronald W. Harvey, Samuel N. Luoma
1985, Marine Ecology Progress Series (22) 281-289
Effects of adherent bacteria and bacterial extracellular polymer (exopolymer) upon uptake of particle-bound Cd, Zn and Ag by the deposit-feeding clam Macoma balthica were studied in the laboratory. Amorphous iron oxyhydroxide and unaltered and alkaline-extracted sediments were used as model particulates in separate, controlled deposit-feeding experiments. In general, amounts of...
Temporal dynamics of estuarine phytoplankton: A case study of San Francisco Bay
J. E. Cloern, B.E. Cole, R.L.J. Wong, A.E. Alpine
1985, Hydrobiologia (129) 153-176
Detailed surveys throughout San Francisco Bay over an annual cycle (1980) show that seasonal variations of phytoplankton biomass, community composition, and productivity can differ markedly among estuarine habitat types. For example, in the river-dominated northern reach (Suisun Bay) phytoplankton seasonality is characterized by a prolonged summer bloom of netplanktonic diatoms...
Ground-water and surface-water interactions in Minnesota and Wisconsin wetlands
R. G. Brown, J. R. Stark, G. L. Patterson
1985, Book chapter, The ecology and management of wetlands
The interaction between ground water and surface water in wetlands is complex and depends on the hydrologic setting of the particular wetland. Hydrologic characteristics have been used in Wisconsin to classify wetlands into four categories; surface-waterdepression wetlands, surface-water-slope wetlands, ground-waterdepression wetlands, and ground-water-slope wetlands, as described by Novitzki (1978). The...
Seasonal cycles of zooplankton from San Francisco Bay
Julie W. Ambler, James E. Cloern, Anne Hutchinson
1985, Hydrobiologia (129) 177-197
The two estuarine systems composing San Francisco Bay have distinct zooplankton communities and seasonal population dynamics. In the South Bay, a shallow lagoon-type estuary, the copepods Acartia spp. and Oithona davisae dominate. As in estuaries along the northeast coast of the U.S., there is a seasonal succession involving the replacement...
Remote sensing of tidal chlorophyll-a variations in estuaries
Glenn P. Catts, Siamak Khorram, James E. Cloern, Allen W. Knight, Stephen D. Degloria
1985, International Journal of Remote Sensing (6) 1685-1706
Simultaneous acquisition of surface chlorophyll-a concentrations for 39 samples from boats and Daedalus 1260 Multispectral Scanner data from a U-2 aircraft was conducted in the northern reaches of San Francisco Bay on 28 August 1980. These data were used to develop regression models for predicting surface chlorophyll-a concentrations over the...
Metallic-mineral assessment of the Jabal Habashi quadrangle, sheet 26F, Kingdom of Saudi Arabia
Donlad H. Richter, Michael S. Allen, E. A. Du Bray, M. Dean Kleinkopf, John S. Pallister
1985, Report
An interagency report prepared by the U.S. Geological Survey Saudi Arabian Mission for the Ministry of Petroleum and Mineral Resources, Kingdom of Saudi Arabia. The work on which this report was based was performed in accordance with a cooperative agreement between the U.S. Geological Survey and the Ministry of Petroleum and...
Development of a computerized wetlands mapping data base for use in section 404 jurisdictional determinatins in San Francisco Bay
Patrick J. Cotter, James B. Johnston, Millicent L. Quammen, Dennis Peters
1985, Conference Paper, Coastal zone '85 : Proceedings of the Fourth Symposium on Coastal and Ocean Management
Development and habitat alteration in the San Francisco Bay-Delta system have placed the remaining wetlands in jeopardy. The Bay-Delta wetlands will be mapped in a joint project of the U. S. Environmental Protection Agency (EPA) and the U. S. Fish and Wildlife Service (FWS). Maps at a 1:24,000 scale will...
Links between magma-tectonic rate balances, plutonism, and volcanism
H. R. Shaw
1985, Journal of Geophysical Research Solid Earth (90) 11,275-11,288
With Smith's (1979) model of ash flow magmatism as the point of departure, quantitative regimes of crustal magmatic evolution are outlined. The average extrusive regime of ash flow magmatism operates at a rate of about 0.001 km3/yr; progressively larger episodes of increasing repose times characterize the evolution of caldera-forming eruptions....
Age of biostratigraphic horizons within the Ordovician and Silurian systems
Michael J. Kunk, J. Sutter, J. D. Obradovich, Marvin A. Lanphere
1985, Geological Society Memoir (10) 89-92
Three samples that have a bearing on the age of horizons within the Ordovician and Silurian systems, two previously dated by the conventional K-Ar method and one by the 40Ar/39 Ar total-fusion method, have been reanalysed using the 40Ar/39Ar age-spectrum method. Conventional K-Ar and total-fusion 40Ar/39Ar ages can always be questioned because of the...
Automated derivation of hydrologic basin characteristics from digital elevation model data
Susan K. Jenson
1985, Conference Paper, Auto-Carto VII: Proceedings of the digital representations of spatial knowledge
Digital elevation model (DEM) data in a raster format can be used to automatically derive the drainage characteristics of an area. A procedure has been designed that is capable of operating on matrices of elevation data having no algorithmically imposed size limit, while performing within the resolution and accuracy tolerances...