DBPapers
DOI: 10.5593/SGEM2016/B31/S12.035

ECOLOGICAL STATUS OF THE DANUBE AND ITS MAIN ROMANIAN TRIBUTARIES BY STUDY OF THE BIOTIC COMPONENTS

E.Stanescu , B.Stanescu , D.Scradeanu , M.Scradeanu , A.Banciu
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-61-2 / ISSN 1314-2704, June 28 - July 6, 2016, Book3 Vol. 1, 267-272 pp

ABSTRACT
Permanent fluctuations of the biotic and non-biotic parameters of the surface waters show that the aquatic ecosystems are a dynamic systems with a dynamic equilibrium. The connections are established between the species and the environmental conditions and also the mutual connections between with the existing populations. Crucial questions concern the structure, functions or dysfunctions and evolution of quality of the surface water as well as their use in management of terrestrial and aquatic environments, for example, adaptability, buffer capacities to resist of stressors and level out changes. The study area of the aquatic ecosystems are the Danube river, on the Bazias-Calarasi sector and the Danube tributaries in southern of Romania (Jiu, Olt and Arges rivers). Sampling points and control sections were chosen to ensure accessibility and safety conditions for sampling. For the location and positioning of sampling points on the map it was used a GPS receiver with high accuracy. This paper presents the structure and the interactions of the biotic parameters and a assessment the current ecological status of the aquatic ecosystems in accordance with the requirements of the Water Framework Directive (transposed into Romanian legislation by Law no.310/2004, that complete / amend the Water Law no.107 /1996).

Keywords: aquatic ecosystems, Danube river, biotic components