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Full-Text Articles in Life Sciences
Ribulose-Bisphosphate Carboxylase Gene Expression In Subtropical Marine Phytoplankton Populations, Scott L. Pichard, Marc E. Frischer, John H Paul
Ribulose-Bisphosphate Carboxylase Gene Expression In Subtropical Marine Phytoplankton Populations, Scott L. Pichard, Marc E. Frischer, John H Paul
Marine Science Faculty Publications
Oceanic phytoplankton are known to fix CO2 primarily through the action of the enzyme ribulose-1,5-bisphosphate carboxylase (RuBPCase). The amino acid and nucleotide sequence of the large subunit of this enzyme have been conserved across the evolution of the chlorophytic plants (from cyanobacteria to higher plants via green algae) with approximately 80 and 70 % homology at the amino acid and nucleotide levels respectively. To understand the molecular regulation of this enzyme in phytoplankton, we have measured levels of the RuBPCase large subunit (rbcL) mRNA and DNA, in combination with rates of photosynthetic CO2 fixation, autofluorescent cell counts, and chlorophyll a …
A Description Of Coads Surface Meteorological Fields And The Implied Sverdrup Transports For The Atlantic Ocean From 30°S To 60°N, Dennis A. Mayer, Robert H. Weisberg
A Description Of Coads Surface Meteorological Fields And The Implied Sverdrup Transports For The Atlantic Ocean From 30°S To 60°N, Dennis A. Mayer, Robert H. Weisberg
Marine Science Faculty Publications
Using COADS data spanning 1947-1988, we describe the regional nature of the Atlantic Ocean wind-driven circulation between 30-degrees-S and 60-degrees-N and its annual and interannual variability. The Sverdrup streamfunction defines the circulation gyres. Our focus is on three central gyres: the Northern Hemisphere anticyclonic subtropical gyre, the cyclonic tropical gyre just north of the equator, and the clockwise equatorial gyre straddling the equator. This rendition of the Sverdrup streamfunction, computed with constant drag coefficient and air density, compares favorably with that from other climatologies. In the Straits of Florida, analyses suggest that differences between the annual cycle in Sverdrup transport …
Viruses, Bacterioplankton, And Phytoplankton In The Southeastern Gulf Of Mexico: Distribution And Contribution To Oceanic Dna Pools, J. Boehme, M. E. Frischer, S. C. Jiang, C. A. Kellogg, S. Pichard, J. B. Rose, C. Steinway, John H. Paul
Viruses, Bacterioplankton, And Phytoplankton In The Southeastern Gulf Of Mexico: Distribution And Contribution To Oceanic Dna Pools, J. Boehme, M. E. Frischer, S. C. Jiang, C. A. Kellogg, S. Pichard, J. B. Rose, C. Steinway, John H. Paul
Marine Science Faculty Publications
Little is known concerning the factors which might control the distribution of viral abundance in oceanic environments and the relationship of viruses to the oceanic DNA pool. We have measured the distribution of viruses, bacterioplankton and phytoplankton in the subtropical southeastern Gulf of Mexico and related these parameters to the distribution of DNA (dissolved and particulate) in these waters. Viral direct counts were 4.6 to 27 x 10(6) ml-1 in Tampa Bay (Florida, USA), 3.8 to 8.5 x 10(5) ml-1 in all oceanic euphotic zone samples and 1.4 to 4.7 x 10(4) ml-1 in deep (200 to 2500 m) waters, …
Seasonal-Variations In Equatorial Atlantic-Ocean Zonal Volume Transport At 28-Degrees-W, T. Y. Tang, Robert H. Weisberg
Seasonal-Variations In Equatorial Atlantic-Ocean Zonal Volume Transport At 28-Degrees-W, T. Y. Tang, Robert H. Weisberg
Marine Science Faculty Publications
Zonal volume transport is examined over the upper 150 m of the water column at 28-degrees-W, using the Seasonal Response of the Equatorial Atlantic experiment moored current meter data at 0.75-degrees-S, 0.0-degrees, and 0.75-degrees-N and a time domain empirical orthogonal function (EOF) analysis to improve spatial and temporal resolution. Gaussian distributions are fit to the mean volume transports per unit width and the fluctuations about these means that are found to be represented by a single EOF mode. The mean volume transport is distributed symmetrically both about the equator and about 75 m depth, with a meridional scale width of …