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Freshwater Primary Production by a Blue–Green Alga of Bacterial Size

Abstract

LOCH LEVEN, Kinross, Scotland (National Grid reference No. 145020; latitude 56° 15′ N, longitude 3° 25′ W), is a shallow productive lake 13 km2 and of 5 m mean depth. An investigation of its ecology and production of phytoplankton is being carried out as part of a chemical, physical and biological study of the lake as part of the International Biological Programme. A minute rod-shaped organism occurred as an important part of the phytoplankton between March and August 1968, and at times was present in an almost pure stand, giving a green colour to the water. A morphological investigation has been made to determine whether it is a bacterium or a blue–green alga, and its temporal abundance and spatial distribution have been studied, together with measurements of gross photosynthetic production.

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BAILEY-WATTS, A., BINDLOSS, M. & BELCHER, J. Freshwater Primary Production by a Blue–Green Alga of Bacterial Size. Nature 220, 1344–1345 (1968). https://doi.org/10.1038/2201344a0

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