Multiplication of heterotrophic sea bacteria in various H-ion concentrations

Abstract

      We examined the behaviour of H-ion concentration in heterotrophic sea bacteria cultures and the multiplication of heterotrophic sea bacteria in various H-ion concentrations under laboratorial conditions.

      1) Sea heterotrophic bacteria increase the H-ion concentration of natural sea water, respectively dislocate pH from alkalic towards acid reaction. This process is more intensive in rich bacterial cultures.

      2) In acid medium (initial pH 6,81 and 6,97) the multiplication of  heterotrophic sea bacteria at the beginning of the experiment is more intensive than in alkalic medium (initial pH 7,32 and 7,72). In bacterial cultures with different initial H-ion concentration pH shifts from acid towards alkalic and neutral reaction.