The utilization of organic nitrogen compounds as sole nitrogen source by some freshwater phytoplankters |
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| Authors: | A. A. H. Vieira D. Klaveness |
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| Affiliation: | Departamenlo de Ciências Biológicas e da Saúde, Universidade Federal de Sao Carlos, Caixa Postal 676, Sao Carlos, Brasil.;Dept of Biology, Univ. of Oslo, Box 1027 Blindern, Oslo 3, Norway. |
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| Abstract: | Seven organic compounds containing nitrogen were tested as potential sources of nitrogen for five different species of freshwater algae. The chlorococcal green algae Selenastrum and Ankistrodesmus were the most versatile with regard to nitrogen sources; the diatom Cyclotella also grew well upon some organic nitrogen compounds. The desmid Arthrodesmus grew fast only on urea, while Cryptomonas did not grow well upon any of the organic compounds tested.
More information is needed before the potential importance of organic nitrogen sources for freshwater phytoplankton can be assessed. |
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