A contribution to the assessment of marine production by means of nutrient salts

Abstract

       Measurements of a year cycle of nutrient salts (nitro­gen and phosphate ones) from two stations in the central Adriatic were used for marine organic production calcu­lation.

       Buljan’s differential-integrational method: P =Σ (∆α) where a = O₂—O'₂ i. e. oxygen content, was used for a quan­titative calculation of production.

       We, however, used the content of nitrogen and pho­sphate salts for α assuming that the variations in these salts contents are due to the biological activity connected with the marine production.

      The results obtained were also compared with the C¹⁴ method.