Unbalanced growth in natural assemblages of marine bacterioplankton

Nitrogen Fixation Among Marine Bacterioplankton

Bacterioplankton community in Chesapeake Bay: Predictable or random assemblages

We monitored bacterioplankton communities from Chesapeake Bay over 2 years (2002–2004) by use of denaturing gradient gel electrophoresis (DGGE) of PCR-amplified 16S rRNA gene. Chesapeake Bay bacterioplankton exhibited a repeatable annual pattern and strong seasonal shifts. In winter, the bacterial communities were dominated by Alphaproteobacteria and Actinobacteria, whereas in summer, the predo...

Analysis of marine viral assemblages

Viruses are the numerically dominant microbes in every oceanic environment from sea surface to sediments. One liter of surface seawater from a typical mesotrophic area contains 10 viruses, about an order of magnitude greater than the number of bacteria. While total counts of viruses are becoming easier to make, we still know very little about the viruses that comprise a given assemblage. Infect...

Growth and grazing mortality rates of phylogenetic groups of bacterioplankton in coastal marine environments.

Dilution culture experiments were conducted in western North Pacific coastal regions to determine growth and grazing mortality rates of bacterial phylogenetic groups (alpha-, beta-, and gamma-proteobacteria and the Cytophaga-Flavobacter cluster) detected by fluorescent in situ hybridization. Growth rates varied greatly (1.2- to 4.0-fold) among different groups, and they were related to environm...

Unbalanced Growth

We study a model designed to understand the concept of unbalanced growth. We define leading sectors to be those that raise the profits from industrialization for other sectors the most. We identify the leading sectors and show that subsidizing them in sequence will raise welfare if the future is not discounted too strongly. Croissance non balanc&e. On &tudie un modele construit pour comprendre ...