title: Particle counter determination of bacterial biomass in seawater.
abstract: The applicability of the Elzone particle counter to the determination of marine bacterial biomass was investigated. The biomass of bacterial pure cultures and a mixed natural population were followed by using the particle counter, a CHN analyzer, and an ATP analyzer. The particle counter showed the precise size distribution of number and volume of submicron-size particles in seawater. For the pure cultured bacterial strains, the conversion factor from volume to carbon is 0.209 mg of C per mm, and for natural bacterial cells of >0.6 mum in diameter, it is 0.184 mg of C per mm. It is recommended that 0.2 be used as the conversion factor for both pure cultured marine bacterial cells and natural bacteria from coastal and near-shore marine environments.
authors.affiliation: Ocean Research Institute, University of Tokyo, Minamidai, Nakano, Tokyo 164, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kogure
authors.forename: I
authors.initials: I
authors.lastname: Koike