▪ Abstract Heterotrophic bacteria perform two major functions in the transformation of organic
matter: They produce new bacterial biomass (bacterial secondary production [BP]), and …

A key question when trying to understand the global carbon cycle is whether the oceans are
net sources or sinks of carbon. This will depend on the production of organic matter relative …

Fluorescence in situ hybridization (FISH) is widely used to describe bacterial community
composition and, to a lesser extent, to describe the physiological state of cells. One of the …

… Altogether, bacterial activity can have a large impact on ecosystem metabolism either in
the ecosystem balance between production and respiration (del Giorgio et al., 1997a), the …

Methane (CH 4 ) is an important greenhouse gas because it has 25 times the global warming
potential of carbon dioxide (CO 2 ) by mass over a century 1 . Recent calculations suggest …

PLANKTONIC bacteria are a fundamental component of the organic carbon cycle in aquatic
systems 1 . Organic carbon consumption by planktonic bacteria is the sum of bacterial …

… unity in eutrophic to hypertrophic systems (de1 Giorgio and Peters 1993). Not all published
… DEL GIORGIO, PA 1992. The relationship between ETS (electron transport system) activity …

… 15 filters are the most effective in reducing the number of 2-m organisms while maintaining
most of the original free-bacterial community structure (del Giorgio and Newell, pers. comm.). …

… change of the biomass ratio (heterotrophic biomass divided by the autotrophic biomass)
with changing autotrophic biomass levels as presented in the present study and in de1 Giorgio …

Dissolved organic matter (DOM) is a master variable in aquatic systems. Modern fluorescence
techniques couple measurements of excitation emission matrix (EEM) spectra and …