SOME ASPECTS OF THE DISTRIBUTION OF REACTIVE PHOSPHORUS IN LAKE McILWAINE, RHODESIA: PHOSPHORUS LOADING AND SEASONAL RESPONSES

Abstract

Between November 1976 and September 1977, samples were taken on a fortnightly basis from a representative station in Lake McIlwaine. In addition an intensive study of the riverine input of reactive phosphorus was conducted. Samples were analysed for total reactive phosphorus, conductivity, pH, dissolved oxygen, phytopigments, suspended and dissolved solids, secchi disc light penetration, and temperature, when possible. River flow was obtained from gauging weirs on the major rivers entering the lake.