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ALGAE > Volume 15(3); 2000 > Article
ALGAE 2000;15(3): 169-173.
Distribution of Spirogyra spp. (Chlorophyta) in Response to Stream pH
Young Hwan Kim, Sang Il Choi
Distribution and abundance of Spirogyra spp., the commonest macroscopic freshwater algae in Korea, were examined by the field survey. The pH value of waters in which plants of Spirogyra spp. grow was determined during the period of June-December 1999 in the central region of Korea. Of nine water systems where Spirogyra spp. grow, the minimum pH value was 5.6 and the maximum was 9.2. A total of 11 species of Spirogyra (S. arta, S. crassa, S. ellipsospora, S. jugalis, S. majuscula, S. mirabilis, S. nitida, S. porangaabae, S. setiformis, S. ternata, S. turfosa) was observed. Among these, S. ternata occurred at six stations, and S. arta, S. crassa and S. setiformis occurred at two sites. Biomass value of S. spp. varied between sites and seasons. S. ellipsospora, S. jugalis, S. majuscula and S. turfosa appeared to be abundant in slightly acidic to neutral conditions. On the other hand, S. crassa, S. mirabilis, S. nitida and S. porangabae were rather abundant in neutral to slightly basic conditions.
Key words: biomass, distribution, freshwater algae, Spirogyra, stream pH

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