Size of dissolved organic matter (DOM), operational definition

Range <0.7 µm
Organism Microbes
Reference Stocker R. Marine microbes see a sea of gradients. Science. 2012 Nov 2 338(6107):628-33. doi: 10.1126/science.1208929. p.628 right column 2nd paragraphPubMed ID23118182
Primary Source D. L. Kirchman, Microbial Ecology of the Oceans (Wiley & Sons, New York, 2008).
Comments "It has long been recognized that the water column is dotted with copious sources of microscale heterogeneity (Fig. 1). A ubiquitous case is the “phycosphere,” the region surrounding a phytoplankton cell, which harbors gradients of dissolved organic matter [DOM operationally defined as the organic material <0.7µm in size (primary source)] and oxygen that attract heterotrophic bacteria (refs 4, 5)."
Entered by Uri M
ID 110355