Ref ID : 2885
Alena Sladeckova and Vladimir Sladecek; Bioindication Within the Aquatic Environment. Acta Universitatis Carolinae Environmentalica 7:3-69, 1993
Reprint
In File
Notes
Aquatic organisms can serve as indicators of the properties of the surrounding environment. They are applied mainly in the field of water quality and in its central part saprobity. Saprobity describes the effects of the content of putrescible organic matter undergoing microbial decomposition. The most suitable biochemical value for its measuring is the biochemical oxygen demand=BOD5. The common processes of eutrophication, pollution, degradation and selfpurification can be damaged or destroyed by toxic, radiochemical and some physical factors interferring with saprobity. Biological indicators enable to distinguish individual saprobic levels by a microscopical analysis, which is simple, direct and rapid, if the investigator knows the organism. In a series of diagrams, figures and tables there is given an orientation and an instruction, how to calculate saprobic valence and saprobic index on the basis of a microscopical analysis of certain aquatic communities. As the aquatic environment is not constant, but changes continuously, information is given about the saprobic succesions of communities, connected with the saprobity. A small atlas of the most common indicators and their communities is added.