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Plankton larvae of invertebrates as an indicator of potential capacity for regeneration of bottom filtrator communities in the Gulf of Gdańsk

Wolska-Pyś M.

Oceanological Studies

1998

Vol. 27, No. 4

93-103

In autumn 1994 and summer 1995, the occurrence of larvae of bottom invertebrates was investigated in the coastal waters of the Gulf of Gdańsk. The determined abundance of larval stages of molluscs and barnacles suggested that in spite of pollution of the environment the biofiltrator communities in the Gulf have a great potential for regeneration and development. Several areas with potentially best conditions for growth, characterised by highest quantities of the larvae, and especially by a high percentage of large larvae just before their transformation into settled forms, were selected. Biotechnical measures to increase the rates of growth and to facilitate processes of self-purification in the water body are proposed.