Effects of acidity and doc on phytoplankton community structure and production in three acid lakes (Nova Scotia)

Seasonal and annual variations in lake dissolved organic carbon concentrations and the effect of these on extinction coefficient, euphotic depth and annual planktonic primary production were investigated in the case of Beaverskin, Kejimkujik, and Pebbleloggitch lakes, Nova Scotia. Observed increases...

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Bibliographic Details
Published in:Water, air and soil pollution air and soil pollution, 1989-01, Vol.46 (1-4), p.323-333
Main Authors: BEAUCHAMP, S. T, KEREKES, J
Format: Article
Language:English
Subjects:
Acid dissolution
Acidic lakes
Acids
Air pollution
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Carbon
Case depth
Catchments
Coefficients
Color
Discharge
Dissolution
Ecotoxicology, biological effects of pollution
Exports
Fresh water environment
Freshwater
Fundamental and applied biological sciences. Psychology
International trade
Lakes
Organic acids
Pollution
Variations
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Summary:Seasonal and annual variations in lake dissolved organic carbon concentrations and the effect of these on extinction coefficient, euphotic depth and annual planktonic primary production were investigated in the case of Beaverskin, Kejimkujik, and Pebbleloggitch lakes, Nova Scotia. Observed increases in annual production in Kejimkujik and Pebbleloggitch lakes, which were coloured lakes, were largely due to changes in euphotic depth resulting from hydrological variations and export of dissolved organic carbon from the lake catchment areas. Changes in discharge accompanied by lower dissolved organic carbon concentration in Beaverskin lake, a clearwater lake, did not produce significant changes in water colour, light extinction coefficient, or annual production between years. There are 35 references.
ISSN:0049-6979
1573-2932
DOI:10.1007/BF00192867