期刊
WATER RESEARCH
卷 38, 期 20, 页码 4361-4366出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2004.08.029
关键词
akinete aermination; sediment drying; Anabaena ucrainica; cyanobacterial blooms
The effect of desiccation on germination frequency of Anabaena akinetes was investigated to evaluate the practical usefulness of sediment drying in reservoirs as a measure of inhibition of Anabaena bloom formation. Sediment samples taken from a small reservoir, where an abundance of Anabaena blooms occur every summer were desiccated in the outdoors and in ail incubator at 5, 10, 15, and 25 degreesC. As a result, the germination frequency of Anabaena akinetes was strongly inhibited in comparison with that of Anabaena akinetes preserved in a refrigerator without desiccation as a control. Greater inhibition of Anabaena germination found Lit a higher temperature was examined, and almost all akinetes lost the ability of germination at 25 degreesC after 3 days of the desiccation treatment. Therefore, sediment drying is considered to be a useful measure to reduce periods and scales of Anabaena blooms, and its effect will be enhanced by performance during the warmer seasons. (C) 2004 Elsevier Ltd. All rights reserved.
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