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Comparison of phytoplankton of 80s and late 90s in a large side arm of the Danube River (Soroksár-Danube/Hungary)

Kiss, Keve Tihamér and Pápista, É. and Ács, Éva and Makk, Judit (2000) Comparison of phytoplankton of 80s and late 90s in a large side arm of the Danube River (Soroksár-Danube/Hungary). In: Limnologigal Reports. Proceedings of the 33rd Conference of the IAD: The Danube and its Tributaries: Antropogenic Impacts and Revitalisation. Josip Juraj Strossmayer University, Faculty of Education, Osijek, pp. 103-110. ISBN 9536711117

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Abstract

The chlorophyll-a content, abundance and taxonomic composition of phytoplankton were studied in the Soroksár-Danube between 1984-87 and 1999. Samples were taken biweekly in the 80’s, monthly in 1999 at Dunaharaszti (the upper part of the side arm) and at Ráckeve (the lower part of the side arm) and from the main arm of the Danube River to compare the qualitative and quantitative composition of phytoplankton. The potential trophic state of Soroksár-Danube is hypertrophic, the actual trophic level is meso-, eutrophic in winter and eu- hypertrophic in other seasons. When the annual water discharge was low, the phytoplankton abundance became higher int he Soroksár Danube compared to the main arm, caused by a high abundance of centric diatoms. When the annual water discharge was high, the abundance of phytoplankton was similar to the main arm. In the other cases, the abundance of phytoplankton of the upper part of the Soroksár-Danube was similar to the main arm, but that of the lower part was different from it (two-three times higher). The much abundant phytoplankton of the side arm flowing back to the main arm can increase the trophic level of the river.

Item Type: Book Section
Subjects: Q Science / természettudomány > QE Geology / földtudományok > QE08 Hydrosphere. Hydrology / hidroszféra, hidrológia
Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia
Depositing User: Erika Bilicsi
Date Deposited: 18 Feb 2013 12:31
Last Modified: 18 Feb 2013 12:31
URI: http://real.mtak.hu/id/eprint/4211

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