periphyton noun1 •A mixture of algae, cyanobacteria, heterotrophic microbes, and detritus that is attached to submerged surfaces in most aquatic ecosystems.Indeed, the tight coupling of As(V) reduction/As(III) oxidation has been seen in periphyton samples and salt-saturated anoxic sediments from Searles Lake. — 2009 formsperiphytons
