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Wasmund, Norbert

Occurrence of cyanobacterial blooms in the baltic sea in relation to environmental conditions

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  • Medientyp: E-Artikel
  • Titel: Occurrence of cyanobacterial blooms in the baltic sea in relation to environmental conditions
  • Beteiligte: Wasmund, Norbert
  • Erschienen: Wiley, 1997
  • Erschienen in: Internationale Revue der gesamten Hydrobiologie und Hydrographie
  • Sprache: Englisch
  • DOI: 10.1002/iroh.19970820205
  • ISSN: 0020-9309
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <jats:title>Abstract</jats:title><jats:p>Cyanobacterial blooms occur regularly in summer in central parts of the Baltic Sea. They are mainly composed of <jats:italic>Aphanizomenon</jats:italic> sp. and <jats:italic>Nodularia spumigena</jats:italic>. Both species have almost similar ecological requirements and can roughly be considered a uniform functional group.</jats:p><jats:p>In order to identify factors that might favour bloom development, water quality data from monitoring programmes were compared with bloom distribution.</jats:p><jats:p>A salinity from 3.8 to 11.5 PSU proved important for the spatial distribution of the bloom development. The bloom's onset was triggered by temperatures approximating 16°C provided that global radiation was &gt; 120 W/m<jats:sup>2</jats:sup> (daily mean) and wind speed was &lt; 6 m/s. Nutrient concentrations decreased immediately before the bloom.</jats:p><jats:p>The bloom's development ceased with poor weather conditions characterized by low irradiation or high wind speed.</jats:p>