DBPapers
DOI: 10.5593/SGEM2016/B32/S15.115

THE QUALITATIVE AND QUANTITATIVE EVALUATION OF MACROALGAE FROM THE ROMANIAN BLACK SEA COAST - A POTENTIAL ECONOMIC RESOURCE FOR THE FUTURE

O. Marin, V. Abaza, D.M. Rosioru
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-62-9 / ISSN 1314-2704, June 28 - July 6, 2016, Book3 Vol. 2, 885-892 pp

ABSTRACT
The submerged vegetation from the Romanian Black Sea waters represents a very important ecosystem component, a feeding and breeding area for invertebrates and fish, which carry out their vital processes within the thickets formed by macrophytes.
Besides the obvious ecological importance, macroalgae can also serve as a source of raw materials for certain industries, thus having an economic importance, providing a possible response to the society’s future needs. At the Romanian Black Sea coast, the phytobenthic communities are located in shallow waters and grow abundantly between 0 and 5 m depth, as a consequence of local conditions, limited rocky substrate and low transparency, so the algal material can be easily collected, in case of a valorification process. During the summer of 2015, at the Romanian coast of the Black Sea, the macroalgae were analyzed from a qualitative and quantitative point of view, from 11 stations along the Navodari-Vama Veche coastal strip, at depths between 0 and 3 m, on the natural rocky substrate. For the summer season 2015, the qualitative analysis revealed the constant presence of the green alga Ulva rigida in all monitored stations. The quantitative analysis showed a clear dominance of the genus Ulva (with a maximum fresh biomass at Costinesti), among the green algae, and of the genus Ceramium (with a maximum fresh biomass at Agigea), among the red algae. In recent years, as a result of the recovery trend of the marine macroflora under certain meteorological and lithological conditions of the Romanian Black Sea coast, the forming of algae deposits on the beach has been observed. Due to their nutritional characteristics, the macroalgae from the Black Sea coast represent a natural resource important for food to humans, as fodder to animals, in agriculture as fertilizer, as ingredients in food and cosmetics industries, as source for substances with pharmacodynamics actions.

Keywords: macroalgae, Black Sea, qualitative and quantitative evaluation, economic importance