Experimentation in open sea of the composite structures for the sustainable development of aquatic ecosystems

Abstract

Protecting water and marine resources - and ensuring their environmental status - is one of the pillars of EU environmental policy. The acceleration of the process of loss of marine biodiversity or of essential goods to the ecosystem has required the adoption of special measures on nature and biodiversity (Sixth Community Environment Action Program). The process of recovering the natural bio filter from the coastal area of the sea coast requires the development of ecological methods designed to increase populations of epibiotic organisms that are filters capable of accelerating the restoration of marine quality in tourist areas - leisure on the coast. The modular system designed and developed by our specialists is intended both for the extension of the natural epibiont bio filter in traditional coastal areas, and for the cultivation for food purposes of mussels - Mytillus Galloprovincialis - the largest bivalve in the Black Sea and oysters - Crassostrea gigas. The location of the modular system has the following specific hydro meteorological characteristics: the winds in the northern sector have the highest dominance and intensity, the orientation of the Romanian Black Sea coast (from north to south) favors the dominance of currents parallel to the shoreline, and the structure of the substrate is composed of an alternation of submerged rocks and stony platforms covered with terry mud. The system has been successfully tested until the third stage of development of the epibiont organisms, the tests continuing at present. The presented solutions will contribute to the restoration of the sea filters, by ensuring an optimal breeding place for a variety of marine organisms.