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http://commons.wikimedia.org/wiki/File:CyanobacteriaInPool.jpg |
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| Description | English: Bloom of cyanobacteria in a freshwater pond. Deutsch: "Blüte" von Cyanobakterien (oft auch als Blaualgenblüte bezeichnet) in einem Teich. Die Konsistenz der Masse direkt unterhalb der Wasseroberfläche ist schlierenartig-flockig (bedingt durch Schleim, der die Zellen kolonieartig verbindet), dabei aber doch "lose fließend". (Diese Form der Cyanobakterien-"Blüte" - es kann je nach Art auch andere Erscheinungsformen geben - sollte nicht mit zusammenhängenden, fädigen Grünalgenwatten oder auch mit einer den gesamten Wasserkörper einheitlich hell- bis olivgrün verfärbenden Grünalgenblüte von Mikroalgen verwechselt werden!) Unterhalb dieser flottierenden Schicht kann das Wasser durchaus klar sein. Die Massenentwicklung (also: "Blüte") von Blaualgen/Cyanobakterien wird meist ausgelöst bzw. begünstigt durch übermäßige Nährstoffeinträge vor allem aus der Landwirtschaft (oder aus der Fischzucht) bei gleichzeitig erhöhten Wassertemperaturen. In Badegewässern kann dieses Phänomen unangenehme Auswirkungen auf den Menschen haben. Hautkontakt sowie die orale Aufnahme der leber- bzw. nervengiftig wirkenden Cyanobakterien können zu Beschwerden wie Übelkeit, Erbrechen, Durchfall, Atemnot, Hautreizungen oder Quaddeln führen. |
| Date | 9 July 2007 |
| Source | Own picture, made in north-eastern Lower Saxony, Germany. |
| Author | Christian Fischer. |
| Permission (Reusing this file) |
When using this image for private or public (non-commercial) purposes outside the Wikipedia project, you have to attribute the author's name in a readable manner under the terms of the Creative Commons License (see below). |
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
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| EXIF data: | |
| File name | cyanobacteriainpool.jpg |
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| Size, Mbytes | 0.5439638671875 |
| Mime type | image/jpeg |
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