Untersuchungen zum Einfluß limnischer Makrophyten auf die Absterbegeschwindigkeit vonEscherichia coli im Wasser

✍ Scribed by Burger, G. ;Weise, G.

• Publisher: John Wiley and Sons
• Year: 1984
• Tongue: English
• Weight: 504 KB
• Volume: 12
• Category: Article
• ISSN: 0323-4320
• DOI: 10.1002/aheh.19840120311

✦ Synopsis

Xutumary: I n bioassays in aquaria, the dying of Escherichia coli was accelerated by Glycerio ?nuxiinn, fichoenoplectus lacustris, A lisnla plantago-aquatica as well as Mentha aquatia as compared with check tanks without any plants (initial concentration 15 X 10:' colony-forming units per ml). As expected, by this the antibacterial effect of the limnic macrophytes attains its maximum effectivity within the first days of the period of investigation. The decimal time of reduction is shortened by one third to half, the centimal reduction time is shortened by one fourth to one third. Mean contact times of 7 . . . 11 hare rrquiredfor the decimation of bacteria by 90 O/o, and mean contact times of 1G . . . 19 h are necessary for a 99 "/O reduction of the population. Possibly, the antibarterial effect in mixed stands of different plant species is increased additively or superadditively.