Phytoplankton and zooplankton (Cladocera, Copepoda) relationship in the eutrophicated River Danube (Danubialia Hungarica, CXI)

Anna Bothár, K. Kiss

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The seasonal variation in primary production, individual numbers, and biomass of phyto- and zooplankton was studied in the River Danube in 1981. The secondary production of two dominant zooplankton species (Bosmina longirostris and Acanthocyclops robustus) was also estimated. In the growing season (April-Sept.) individual numbers dry weights and chlorophyll a contents of phytoplankton ranged between 30-90 × 106 individuals, l-1, 3-12 mg l-1, and 50-170 μg l-1, respectively. Species of Thalassiosiraceae (Bacillariophyta) dominated in the phytoplankton with a subdominance of Chlorococcales in summer. Individual numbers and dry weights of crustacean zooplankton ranged between 1400-6500 individuals m-3, and 1.2-12 mg m-3, respectively. The daily mean gross primary production was 970 mg C m-3 d-1, and the net production was 660 mg C m-3 d-1. Acanthocyclops robustus populations produced 0.2 mg C m-3 d-1 as an average, and Bosmina longirostris populations 0.07 mg C m-3 d-1. The 'ecological efficiency' between phytoplankton and crustacean zooplankton was 0.03%.

Original languageEnglish
Pages (from-to)165-171
Number of pages7
JournalHydrobiologia
Volume191
Issue number1
DOIs
Publication statusPublished - Feb 1990

Fingerprint

Danube River
Phytoplankton
zooplankton
Copepoda
Rivers
phytoplankton
river
crustacean
Thalassiosiraceae
primary production
primary productivity
Crustacea
secondary productivity
secondary production
Chlorophyll
chlorophyll a
Biomass
growing season
seasonal variation
chlorophyll

Keywords

  • ecological efficiency
  • phytoplankton
  • primary productivity
  • River Danube
  • secondary productivity
  • zooplankton

ASJC Scopus subject areas

  • Water Science and Technology
  • Pollution
  • Environmental Science(all)
  • Oceanography
  • Aquatic Science

Cite this

Phytoplankton and zooplankton (Cladocera, Copepoda) relationship in the eutrophicated River Danube (Danubialia Hungarica, CXI). / Bothár, Anna; Kiss, K.

In: Hydrobiologia, Vol. 191, No. 1, 02.1990, p. 165-171.

Research output: Contribution to journalArticle

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