New Zealand Journal of Marine and Freshwater Research abstracts

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Lake Rerewhakaaitu - an apparently phosphate-free lake

G. R. Fish

Fisheries Research Division, Ministry of Agriculture and Fisheries, P.O. Ngapuna, Rotorua, New Zealand

Abstract Lake Rerewhakaaitu, near the Bay of Plenty, New Zealand, is a warm, third-class lake. From a 1972-74 limnological survey, its annual heat budget (50 J.crrT¹) was similar to those of comparable mixed lakes in the area, but its biological production (mean particulate chlorophyll a 12.9 g.nr³, and mean dry weight of bottom fauna 1.82 g.m"²) was comparatively low, although its catchment is extensively farmed. Dissolved phosphate concentrations in its water remained too low for detection at all times, probably because of rapid sorption by colloidal allophanic clays.

N.Z. Journal of Marine and Freshwater Research 11 (3) : 257-63. September 1978
Received 19 May 1977; revision received 12 December 1977. Fisheries Research Division Publication 327.

PDF file of entire paper: medium quality (587K); (scanned from paper original: notes about this process)

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