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Abstract

abstract

Bacterial numbers in Marion Island (46�' S, 37�' E) lentic waterbodies (shallow lakes, lava lakelets and crater lakes) not influenced by animals varied between 2.4 x 105 and 24.5 x 105 cells ml-1. A mountain tarn 1 100 m above sea level contained only 0.9 x 105 cells ml-1 and streams (1.0-4.5) x 105 cells ml-1. Waters influenced by seabird and seal manuring exhibited higher counts (up to 63.2 x 105 cells ml-1) and NH4-N and soluble reactive P concentrations accounted for 51% and 4% respectively of the total variation in bacterial numbers in 49 waterbodies.