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Growth ofCyclotella meneghinianaKutz. I. Effects of temperature, light and low rate of nutrient supply
- Source :
- Annales de Limnologie - International Journal of Limnology. 33:139-147
- Publication Year :
- 1997
- Publisher :
- EDP Sciences, 1997.
-
Abstract
- A strain of Cyclotella meneghiniana was isolated from the River Danube. The optimum irradiance and temperature for growth were determined in batch cultures. The optimum temperature for growth was 25 °C. The estimated saturated irradiance was near 125 µE m-2 s-1. The calculated Ik for growth and photosynthesis were 30 ± 3 and 44 ± 6 µE m-2 s-1 respectively. A continuous culture technique was used to test the growth and cell composition at the transition state between batch, nutrient sufficiency, and a low rate of nutrient supply. Algal response was characterized by high intracellular N and C with negative growth rate. At a low dilution rate (0.06 d-1), the continuous culture theory was not followed. This critical rate is characterized by low chlorophyll-a content per cell and may depend on the mode of nutrition.
Details
- ISSN :
- 00034088
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- Annales de Limnologie - International Journal of Limnology
- Accession number :
- edsair.doi...........f843c846311c1c987e438f967305b8f5