Some mineral nutrient studies of a lowland mere in Cheschire,England

Summary Analyses of nine ionic constituents in Rostherne Mere water were made at regular intervals and five depths over a two year period. Only nitrate-nitrogen showed a regular seasonal pattern. Phosphate-phosphorus and ammonium-nitrogen increased with depth in summer. The results are discussed in relation to the origin of the nutrients, stratification and the phytoplankton of the mere. The levels of nutrients present did not appear to limit algal growth with the possible exception of nitrogen.