Botulizmus a Kis-Balatonon

Lelkes, András and Horváth, Jenő (2000) Botulizmus a Kis-Balatonon. MAGYAR VÍZIVAD KÖZLEMÉNYEK (6). pp. 327-336. ISSN 1416-1389 (nyomtatott); 1419-6107 (elektronikus)

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Abstract

The authors conclude: After the completion of the Water Control System of Kis- Balaton conditions evolved that were suitable to allow, combined with dry, hot summers to cause bird deaths due to botulism. The number birds perished in botulism from 1977 to the summer 1998: 7000 birds in July-August, 1977, 499 birds in summer of 1988, 29 species, 1001 birds in summer of 1993, only 9 birds in 1997, 26 birds in 1998. Taking into account the size of the area, it’s function (capital investment towards water quality control for Lake Balaton) and the change in the system itself, as well the weather conditions, it was not possible to prevent botulism and presumably it will not be possible to prevent it in the future as well. It may possible to attempt the reduction of the destruction (e g. aeration), but the energy invested is not proportional with the results. The most important nature protection activity in the case of an outbreak is the collection of the dead birds and the treatment of the sick birds. It appears that suitable procedures are available for the treatment, but it’s effectiveness can be enhanced with the establishment of a treatment facility. In wetlands, similar to that of Kis-Balaton, if the necessary conditions exist, botulism could erupt anywhere, therefore it is advisable to pay attention to it’s prevention during nature protection treatments.

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