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Spatial distribution and temporal variation of Microcystis species composition and microcystin concentration in Lake Biwa by Kazuhiko Ozawa; Hiroki Fujioka; Minoru Muranaka; Atsushi Yokoyama; Yukimi Katagami; Takamitsu Homma; Kanako Ishikawa; Shigeo Tsujimura; Michio Kumagai; Mariyo F. Watanabe; Ho‐Dong Park is a Environmental Science article available to read on EtoBox.
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## Abstract Spatial and temporal variation in __Microcystis__ species composition and microcystin concentration, quantified by enzyme‐linked immunosorbent assay and high‐performance liquid chromatography, were investigated during a 3‐year period (1998–2000) in the Northern Basin of Lake Biwa. The Northern Basin generally had a concentration of 5 μg L^−1^ or less, except at station 1 (Nagahama Bay) from July to October during the study period. The maximum concentration at station 1 was 22.7, 35.9, and 22.0 μg L^−1^ in October of 1998, 1999, and 2000, respectively. Eleven species of cyanobacteria were observed: __Microcystis aeruginosa, M. ichthyoblabe, M. novacekii, M. wesenbergii, Oscillatoria raciborskii, Anabaena oumiana, A. affinis, A. flos‐aquae, A. ucrainica, A. smithii,__ and __A. crassa.__ Of these, __M. aeruginosa__ and __M. wesenbergii__ were the main components observed. A high concentration of microcystin in the lake water was mostly a result of variation in the relative amount of toxic __M. aeruginosa__ rather than of the total __Microcystis__ cell number. This was supported by the analytical results for isolated strains. __Microcystis__ spp. cell density in the Norther
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- Author
- Kazuhiko Ozawa; Hiroki Fujioka; Minoru Muranaka; Atsushi Yokoyama; Yukimi Katagami; Takamitsu Homma; Kanako Ishikawa; Shigeo Tsujimura; Michio Kumagai; Mariyo F. Watanabe; Ho‐Dong Park
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1520-4081)
- Published
- 2005
- Language
- EN
- Field
- Environmental Science (Physical Sciences)