Abstract
INVESTIGATIONS carried out at Loch Craiglin, a small arm of Loch Sween1, have shown that the productivity of an enclosed sea loch can be raised by the addition of sodium nitrate and superphosphate, just as the productivity of a laboratory culture or a freshwater pond can be increased by the addition of plant nutrients. However, the hydrographic and biological conditions in Loch Craiglin were rather atypical: the small depth, the fluctuating and, on the whole, low salinity in the upper layers, the high hydrogen sulphide and low oxygen concentration in the deeper water, the profuse growth of seaweed and eel grass, the soft muddy ground, all were factors which made this experiment a severe test.
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References
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GROSS, F., RAYMONT, J., NUTMAN, S. et al. APPLICATION OF FERTILIZERS TO AN OPEN SEA LOCH. Nature 158, 187–189 (1946). https://doi.org/10.1038/158187a0
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DOI: https://doi.org/10.1038/158187a0
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