Nitrogen fixation, ammonium and nitrate uptake during a bloom of Cylindrospermopsis raciborskii in Lake Balaton

M. Présing, Sándor Herodek, Lajos Vörös, István Kóbor

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75 Citations (Scopus)

Abstract

N2-fixation and 15N-labelled ammonium and nitrate uptake were measured during a bloom of C. raciborskii in two basins of Lake Balaton. In the eastern basin when the chlorophyll-a content reached 70 μg/l the N2- fixation was low (59 mg N m-2 day-1) and the N uptake was dominated by ammonium (393 mg N m-2 day-1). The nitrate uptake was of minor importance in both basins (43 and 55 mg N m-1 day-1, respectively). In the western basin, the chlorophyll-a tentent was 160μg/l and recirculation of regenerated forms of nitrogen could not support the demand. Although the ammonium uptake was high (357 mg N m-2 day-1), the fixed nitrogen (407 mg Nm-2 day-1) exceeded it. The daily integrated carbon and nitrogen uptake ratios were 5.2 (weight/weight) in both basins.

Original languageEnglish
Pages (from-to)553-562
Number of pages10
JournalArchiv fur Hydrobiologie
Volume136
Issue number4
Publication statusPublished - 1996

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Cylindrospermopsis raciborskii
nitrogen fixation
algal bloom
ammonium
nitrates
nitrate
uptake mechanisms
lakes
basins
lake
basin
fixation
nitrogen
chlorophyll a
chlorophyll
carbon

ASJC Scopus subject areas

  • Aquatic Science

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Nitrogen fixation, ammonium and nitrate uptake during a bloom of Cylindrospermopsis raciborskii in Lake Balaton. / Présing, M.; Herodek, Sándor; Vörös, Lajos; Kóbor, István.

In: Archiv fur Hydrobiologie, Vol. 136, No. 4, 1996, p. 553-562.

Research output: Contribution to journalArticle

Présing, M. ; Herodek, Sándor ; Vörös, Lajos ; Kóbor, István. / Nitrogen fixation, ammonium and nitrate uptake during a bloom of Cylindrospermopsis raciborskii in Lake Balaton. In: Archiv fur Hydrobiologie. 1996 ; Vol. 136, No. 4. pp. 553-562.
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