Phytolankton assessment in Danube Delta Biosphere Reserve
Journal Title: Scientific Annals of the Danube Delta Institute - Year 2015, Vol 21, Issue
Abstract
The term ”plankton” refers to those microscopic aquatic forms having little or no resistance to currents and living free-floating and suspended, in open or pelagic waters. Phytoplankton development has different consequences depending on biomass quality and quantity, the overgrowth result being eutrophication process. The eutrophication intensity can cause both a lower water transparency, by excessive algal growth, to fish death in the area. In this study, it was presented the ecological status and phytoplankton biomass dynamic, in the Danube branches from upstream to downstream. The measurements have been made in 2013, in March, June, September and November, using spectrofluorometer for algal biomass determination and a microscope for qualitative analyses of phytoplankton species. Shannon-Wiener index was calculated to compare phytoplankton species diversity. Also, the biodegradable organic matter loading the ecosystem was determined by computing the Saprobic index. The values obtained do not exceed the eutrophication limits according to the Water Framework Directive, transposed into Romanian legislation by Order 161/2006, with normal concentrations for rheophile ecosystems, as Danube's branches. In this area, water currents and high water turbidity inhibit phytoplankton growth, in contrast to lacustrine ecosystems, where light penetration to depths favors the development of different phytoplankton groups.
Authors and Affiliations
Cosmin Spiridon, Liliana TÖRÖK, Iuliana Mihaela Tudor, Orhan Ibram, Cristina Despina, Daniela Seceleanu Odor, Marian Tudor, Lucian P. Georgescu
Keywords
Related Articles
- EP ID EP235223
- DOI 10.7427/DDI.21.10
- Views 114
- Downloads 0
Seasonal dynamics of the inorganic nutrients from aquatic complex Somova-Parcheș in 2016
The existence of nitrogen compounds influence variety, abundance and nutritional value of aquatic organisms. This study aimes to analyze the dynamic of nutrient inorganic forms in spring (March), summer (July) and autumn...
The harmonization of cultural heritage and architectural conservation needs with socio-economic requirements of rural habitat in Danube Delta
The paper present a study of cultural heritage of rural landscape in Danube Delta Biosphere Reserve focuses on cultural landscapes that reflect traditional lifestyle of the locals, activities of deltas’ resource sustaina...
Phytolankton assessment in Danube Delta Biosphere Reserve
The term ”plankton” refers to those microscopic aquatic forms having little or no resistance to currents and living free-floating and suspended, in open or pelagic waters. Phytoplankton development has different conseque...
Evaluation of vegetation diversity of the limestone quarry „Lafarge Ciment” (Moldova) S.A.
Actual floristic research is focused on the study of the flora biodiversity and elaboration of a management plan in order to recover the flora of the „Lafarge Cement” (Moldova) S.A. quarry ecosystem. The study refers to...
Application of genetic and evolutionary approaches in marine conservation and management (Case study: project)
Contemporary studies of population structure and genetic diversity increasingly employ new analytical and technical tools that provide high-resolution genetic information. These tools, that include procedures such as pol...