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Bloom forming Alexandrium ostenfeldii (Dinophyceae) in shallow waters of the Åland archipelago, Northern Baltic Sea.
Abstract In the past years, late summer blooms of the bioluminescent dinoflagellate Alexandrium ostenfeldii have become a recurrent phenomenon in coastal waters of the central and Northern BalticExpand
Screening for cyanobacterial hepatotoxins, microcystins and nodularin in environmental water samples by reversed-phase liquid chromatography-electrospray ionisation mass spectrometry.
Water samples taken from 93 freshwater and brackish water locations in Aland (SW Finland) in 2001 were analysed for biomass-bound microcystins and nodularin, cyanobacterial peptide hepatotoxins, byExpand
Accumulation of a peptide toxin from the cyanobacterium Oscillatoria agardhii in the freshwater mussel Anadonta cygnea
Swan mussels (Anodonta cygnea) were exposed to a toxic strain of the cyanobacterium Oscillatoria agardhii. Mussels accumulated large amounts of the peptide Oscillatoria toxin which was present in lowExpand
Ultrastructure of the photosynthetic ciliate Mesodinium rubrum.
New cellular structures, bifurcated oral tentacles, were observed in many specimens of the photosynthetic ciliate Mesodinium rubrum from the northern Baltic Sea. Cross-sections of tentacles revealedExpand
Toxic algae and fish mortality in a brackish-water lake in Åland, SW Finland
The brackish-water Lake Vargsundet (SW Finland) was affected by multiple algal toxins and extensive fish mortality in July 1997. Dense populations of the ichthyotoxic haptophyte Prymnesium sp. andExpand
Depth maxima of mesodinium rubrum (lohmann) hamburger & buddenbrock - examples from a stratified baltic sea inlet
Abstract The vertical distribution and photosynthetic activity of the fast swimming phototrophic ciliate Mesodinium rubrum were studied periodically between 1983 and 1988 in a 20 m deep stagnantExpand
Toxic cyanobacteria and water quality problems—Examples from a eutrophic lake on Åland, South West Finland
Abstract Persistent mass occurrence of the toxic cyanobacterium Oscillatoria agardhii Gomont is reported from Ostra Kyrksundet (area 200 ha, max. depth 22 m, mean depth 8.5 m), a eutrophic lake andExpand
Red tide of the dinoflagellate Heterocapsa triquetra (Dinophyta) in a ferry-mixed coastal inlet
A red tide of the marine dinoflagellate Heterocapsa triquetra (Ehrenberg) Stein was studied in the fjordlike Mariehamn ferry harbour area (Aland, SW Finland) in 1996. The red tide started in mid-JulyExpand