Recurrent depth maxima of the hepatotoxic cyanobacterium Oscillatoria agardhii

Tore Lindholm, Jussi A.O. Meriluoto

Research output: Contribution to journalArticleScientificpeer-review

43 Citations (Scopus)


Toxic cyanobacteria, which have been implicated in human illness and animal mortalities, are common in many lakes, but their seasonal and vertical distribution is poorly known. We report persistent and recurrent metalimnetic blooms of Oscillatoria agardhii in the eutrophic Lake Östra Kyrksundet (southwest Finland) and associated toxin peaks analyzed quantitatively using liquid chromatography. Marked metalimnetic maxima of toxic Oagardhii developed during 1988–90. The desmethyl-microcystin-RR (a cyclic heptapeptide hepatotoxin) levels in the metalimnion were 20–40 μg∙L−1 and paralleled the chlorophyll a concentrations.
Original languageEnglish
Pages (from-to)1629-1634
Number of pages6
JournalCanadian Journal of Fisheries and Aquatic Sciences
Issue number9
Publication statusPublished - 1991
MoE publication typeA1 Journal article-refereed


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