Shade-adapted Algae beneath Ice and Snow in the Northern Bothnian Sea

✍ Scribed by Dr. Agnes Müller-Haeckel

• Publisher: John Wiley and Sons
• Year: 1985
• Tongue: English
• Weight: 605 KB
• Volume: 70
• Category: Article
• ISSN: 1434-2944
• DOI: 10.1002/iroh.19850700303

✦ Synopsis

The winter-spring phytoplankton flora in the coastal waters of the northern Bothnian Sea consists mainly of marine cold water species even adapted to low light. These dinoflagellates and diatoms seem to be selectively promoted by the seven months of low light and wster temperature. They are able to grow during this period of subsaturated light and have their abundance maxima around ice-break. Solar radiation measured under ice and snow cover was in the same order of magnitude as the compensation points of some of the species. I n summer, these algae species vanish from the water, and surely survive in the form of inactive life stages.