Benthic algal investigations in the Danube river and some of its main tributaries from Germany to Hungary

E. Ács, K. Szabó, K. Kiss, František Hindák

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The epilithic algae in the river Danube and some of its main tributaries were studied. Quantitative samples were taken from the upper part of stones of the shoreline of rivers in August 2000 and from the side in current line of stones in August and October 2001. Samples in 2000 were collected from the Danube from Ingolstadt (Germany) to Göd (Hungary), in August 2001 from Nasgenstadt (Germany) to Baja (Hungary), in October 2001 from Bratislava (Slovakia) to Mohács (Hungary), and also from the mouth of some major tributaries of Danube river. The most abundant group of algae was the diatoms, specifically the Pennales. In some samples the proportion of Chlorophyta was more than 20%. In 2000 the proportion of Cyanobacteria was also high in many samples because samples were taken from the upper part of stones. In some samples the proportion of the Centrales was surprisingly high. On the basis of diatom indices calculated from the relative abundance of diatoms using the OMNIDIA software, the water quality of the German-Austrian-Slovak part of the Danube is generally good, whereas that of the Hungarian part is moderate. Some evidence of organic pollution or more was found at Melk (in August 2000), Gabčíkovo (in October 2001), Komárom (in August 2001) and Göd (in August and October 2001). The water quality of the rivers Isar, Enns, (in August 2000 and 2001), Iller, Lech, Danube-Main Channel, Váh (in August 2001) was good but of other investigated tributaries moderate. Some evidence of organic pollution was found in the Morava river in August 2000, Mosoni Danube in August 2001 and Hron in August and October 2001. The percentage of pollution tolerant taxa indicated a high level of organic pollution also in the IpeI' river in August and October 2001.

Original languageEnglish
Pages (from-to)545-554
Number of pages10
JournalBiologia - Section Botany
Volume58
Issue number4
Publication statusPublished - Jul 2003

Fingerprint

Danube River
Hungary
tributary
Germany
algae
Bacillariophyceae
pollution
river
rivers
diatom
sampling
Bacillariales
water quality
alga
Slovakia
Chlorophyta
Cyanobacteria
cyanobacterium
relative abundance
mouth

Keywords

  • Austria
  • Benthic algae
  • Germany
  • Green algae
  • Hungary
  • Large rivers
  • Slovakia
  • The Danube
  • Water quality

ASJC Scopus subject areas

  • Plant Science
  • Ecology

Cite this

Benthic algal investigations in the Danube river and some of its main tributaries from Germany to Hungary. / Ács, E.; Szabó, K.; Kiss, K.; Hindák, František.

In: Biologia - Section Botany, Vol. 58, No. 4, 07.2003, p. 545-554.

Research output: Contribution to journalArticle

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abstract = "The epilithic algae in the river Danube and some of its main tributaries were studied. Quantitative samples were taken from the upper part of stones of the shoreline of rivers in August 2000 and from the side in current line of stones in August and October 2001. Samples in 2000 were collected from the Danube from Ingolstadt (Germany) to G{\"o}d (Hungary), in August 2001 from Nasgenstadt (Germany) to Baja (Hungary), in October 2001 from Bratislava (Slovakia) to Moh{\'a}cs (Hungary), and also from the mouth of some major tributaries of Danube river. The most abundant group of algae was the diatoms, specifically the Pennales. In some samples the proportion of Chlorophyta was more than 20{\%}. In 2000 the proportion of Cyanobacteria was also high in many samples because samples were taken from the upper part of stones. In some samples the proportion of the Centrales was surprisingly high. On the basis of diatom indices calculated from the relative abundance of diatoms using the OMNIDIA software, the water quality of the German-Austrian-Slovak part of the Danube is generally good, whereas that of the Hungarian part is moderate. Some evidence of organic pollution or more was found at Melk (in August 2000), Gabč{\'i}kovo (in October 2001), Kom{\'a}rom (in August 2001) and G{\"o}d (in August and October 2001). The water quality of the rivers Isar, Enns, (in August 2000 and 2001), Iller, Lech, Danube-Main Channel, V{\'a}h (in August 2001) was good but of other investigated tributaries moderate. Some evidence of organic pollution was found in the Morava river in August 2000, Mosoni Danube in August 2001 and Hron in August and October 2001. The percentage of pollution tolerant taxa indicated a high level of organic pollution also in the IpeI' river in August and October 2001.",
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