A longitudinal physico-chemical and algal survey of five rivers flowing through the AOSERP study area ...
Studies concentrating upon the epilithon were conducted in five tributary rivers flowing into the Athabasca River: the Muskeg, Steepbank, Hangingstone, MacKay, and Ells rivers. The species composition of the epilithic algae was determined during June to November 1978. Diatoms and blue-green algae do...
| Main Authors: | , , |
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| Format: | Report |
| Language: | English |
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University of Alberta Library
1980
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.7939/r3bv77 https://ualberta.scholaris.ca/handle/123456789/44058 |
| Summary: | Studies concentrating upon the epilithon were conducted in five tributary rivers flowing into the Athabasca River: the Muskeg, Steepbank, Hangingstone, MacKay, and Ells rivers. The species composition of the epilithic algae was determined during June to November 1978. Diatoms and blue-green algae dominated numerically except in the Hangingstone River where chlorophycean species replaced the latter group .. Seasonal fluctuations in algal species and numbers were followed together with seasonal measurements of standing crop and primary productivity. These latter results probably underestimate true productivity because non-circulating chambers had to be used until circulating ones were constructed. To examine the chief determinants causing species, standing crop, and productivity fluctuations, various chemical and physical factors were measured, their fluctuations described, and relationships examined. This preliminary analysis showed no single nutrient or physical factor to be responsible. Instead, a complex ... |
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