Завантаження...

CyanobacteriaInPool
 

 

 

This photo was viewed 2 times and was downloaded in full size 0 times.

This photo was liked 0 times

Source page: http://commons.wikimedia.org/wiki/File:CyanobacteriaInPool.jpg
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(2007-07-09)
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).

Other versions

See also: CyanobacteriaFishpond.jpg

w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
  • share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.



Licensing:
Creative Commons Attribution-Share Alike 3.0 Unported

Comments

Only registered users can post comments. Please login



EXIF data:
File name cyanobacteriainpool.jpg
Size, bytes 557019
Mime type image/jpeg
The images at Free-Photos.biz come mainly from Wikimedia Commons or from our own production. The photos are either in the public domain, or licensed under free linceses: Free-Photos.biz license, GPL, Creative Commons or Free-Art license. Some very few other photos where uploaded to Free-Photos.biz by our users and released into the public domain or into free usage under another free license (like GPL etc.)

All photos in average size can be saved by everyone without registration (by right-clicking) - and all photos can be downloaded in full-size and without the big watermark by members (by left-clicking) (registration and free membership required).

While the copyright and licensing information supplied for each photo is believed to be accurate, Free-Photos.biz does not provide any warranty regarding the copyright status or correctness of licensing terms. If you decide to reuse the images from Free-Photos.biz, you should verify the copyright status of each image just as you would when obtaining images from other sources.


The use of depictions of living or deceased persons may be restricted in some jurisdictions by laws regarding personality rights. Such images are exhibited at Free-Photos.biz as works of art that serve higher artistic interests.

christianity portal