On the High Density of a Phytoplankton Population Found in a Lake under Ice

• Published in: Internationale Revue der gesamten Hydrobiologie und Hydrographie
• Main Authors: Maeda, Osamu, Ichimura, Shun‐Ei
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1973
• Subjects: Ice Sheet
• Online Access: http://dx.doi.org/10.1002/iroh.19730580507; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Firoh.19730580507; https://onlinelibrary.wiley.com/doi/pdf/10.1002/iroh.19730580507

Abstract The growth of phytoplankton in an ice‐covered lake was investigated with special reference to their photosynthetic and heterotrophic activities. Under transparent ice the photosynthetic production of organic matter was maintained enough to hold a high density of phytoplankton. When the light penetration to the water was diminished strongly by the ice‐sheet, heterotrophy contributed largely to the growth of phytoplankton.