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- Title
A CASE OF MICROCYSTIS WATER COLOURING IN WINTER.
- Authors
Fjerdingstad, E.
- Abstract
The article presents a case of microcystis water coloring in winter. While water coloring and water bloom in eutrophic and polluted lakes are common phenomena in summer, they are of quite exceptional occurrence in winter. A peculiar case of water coloring took place on January 6, 1952, in the small lake Vejie Sø located in northern Zealand near Holte, in the vicinity of Copenhagen, Denmark. The lake belongs to the rather strongly eutrophicated Danish lakes and receives a good deal of biologically purified sewage and discharge water, chiefly from the nearby eutrophic lake Sollerod Sø and the purification plant situated at this latter lake. Vejle Sø is connected by a navigable canal with Fure Sø, into which it drains. Investigations of lake mud have shown that in eutrophic lakes, in particular, an excessive transformation of the deposit through bacterial activity takes place. A stratification of the lake deposits has likewise been demonstrated, the deepest-lying layer forming a methane zone, where almost exclusively methane bacteria of the type Methansarcina methanica occur.
- Subjects
ALGAL blooms; MICROCYSTIS; CHROOCOCCACEAE; MICROALGAE; EUTROPHICATION; LAKE restoration
- Publication
Oikos, 1951, Vol 3, Issue 2, p243
- ISSN
0030-1299
- Publication type
Article
- DOI
10.2307/3565187