Abstract

Monthly change of chemical and biological features in coastal brackish pond of Casaraccio have been investigated. Peak concentrations of total phosphorus (15 mg P m^-3), nitrate nitrogen (50 mg N m^-3) and ammonia nitrogen (130 mg N m^-3) are low. Peak values of chlorophyll a (4 mg m^-3) and average biomass macrophytes of the pond (120 g m^-2) are also low, in spite of the fact that the crop of benthic macrophytes are very high (400 g m^-2) in some parts of the pond. The resuls of this research represent a starting point for the evaluation of future possible changes which may derive by the implementation of new industrial aquaculture development.

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