1 Institute of Arctic and Alpine Research (INSTAAR), University of Colorado Boulder 2 Institute of Arctic and Alpine Research (INSTAAR), University of Colorado Boulder 3 United States Geological ...

This is a preview. Log in through your library . Abstract A procedure is described for observation and enumeration of microscopic epilithic algae, directly on stone surfaces. The method involves the ...

Performance of a standard method depends on the quality of reagents, equipment, commercial and in-house test procedures and labs should ensure they have been validated and shown to be fit for purpose.

Three methods for assaying nitrification and denitrification were compared in agricultural field plots in the Southeastern USA. Nitrification was measured using the chlorate inhibition enzyme assay, ...