Bioindikatoren für erhöhte Metallgehalte in Fließgewässern

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Abstract
Lawful arguments of food research require an information of the concentrations of heavy metals in fishes. Whereas for the control of emissions and of river pollution the analysis on heavy metals in excellent indicator organisms — as specific submerged water plants or fish food (zoobenthic) organisms — is generally more sensitive and therefore more suitable. With analytical results there is no successive accumulation of metals in the aquatic food chain — that means no biomagnification — determinable. By the analysis of some bioindicators the degree of the environmental load due to heavy metals can be estimated. With this ecological method we are able to detect the emissions' locality and their producers.