The significance of various nitrogen sources for phytoplankton growth in shallow lake and hypertrophie reservoirs

M. Présing, Lajos Vörös, Sándor Herodek, György Abrusán

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The contribution of nitrogen forms to the nitrogen demand of phytoplankton has been estimated in two basins of the oligo-mesotrophic Lake Balaton and its two hypertrophie pollution control reservoirs. The uptake rates were determined using 15N methodology, and by measuring concentration changes with time. N2-fixation were measured by the acetylene-reduction technique. The light dependence of uptake and N2-fixation was described with an exponential saturation equation. The dark uptake velocity of ammonium, nitrate and urea were 60-80%, 4-66% and 16-74% of light-saturated uptake, respectively. Ammonium, urea and nitrate uptakes were 51-85%, 12-42% and 2-8% of the total daily nitrogen uptake. In contrast, N2-fixation was insignificant (0-4%). The interaction of ammonium and nitrate uptake was determined in separate experiments, which demonstrated suppression of nitrate uptake at ammonium addition.

Original languageEnglish
Pages (from-to)361-368
Number of pages8
JournalInternational Review of Hydrobiology
Volume83
Issue numberSPEC. ISS.
Publication statusPublished - 1998

Fingerprint

fixation
ammonium
phytoplankton
nitrates
nitrate
lakes
urea
nitrogen
lake
acetylene reduction
pollution control
acetylene
ammonium nitrate
saturation
basins
methodology
basin
experiment
demand
rate

Keywords

  • Ammonium preference
  • Cyanobacteria
  • Light-dependence
  • Nitrogen uptake

ASJC Scopus subject areas

  • Aquatic Science

Cite this

The significance of various nitrogen sources for phytoplankton growth in shallow lake and hypertrophie reservoirs. / Présing, M.; Vörös, Lajos; Herodek, Sándor; Abrusán, György.

In: International Review of Hydrobiology, Vol. 83, No. SPEC. ISS., 1998, p. 361-368.

Research output: Contribution to journalArticle

Présing, M. ; Vörös, Lajos ; Herodek, Sándor ; Abrusán, György. / The significance of various nitrogen sources for phytoplankton growth in shallow lake and hypertrophie reservoirs. In: International Review of Hydrobiology. 1998 ; Vol. 83, No. SPEC. ISS. pp. 361-368.
@article{c78c217b1dc14f7091861c87265cdca1,
title = "The significance of various nitrogen sources for phytoplankton growth in shallow lake and hypertrophie reservoirs",
abstract = "The contribution of nitrogen forms to the nitrogen demand of phytoplankton has been estimated in two basins of the oligo-mesotrophic Lake Balaton and its two hypertrophie pollution control reservoirs. The uptake rates were determined using 15N methodology, and by measuring concentration changes with time. N2-fixation were measured by the acetylene-reduction technique. The light dependence of uptake and N2-fixation was described with an exponential saturation equation. The dark uptake velocity of ammonium, nitrate and urea were 60-80{\%}, 4-66{\%} and 16-74{\%} of light-saturated uptake, respectively. Ammonium, urea and nitrate uptakes were 51-85{\%}, 12-42{\%} and 2-8{\%} of the total daily nitrogen uptake. In contrast, N2-fixation was insignificant (0-4{\%}). The interaction of ammonium and nitrate uptake was determined in separate experiments, which demonstrated suppression of nitrate uptake at ammonium addition.",
keywords = "Ammonium preference, Cyanobacteria, Light-dependence, Nitrogen uptake",
author = "M. Pr{\'e}sing and Lajos V{\"o}r{\"o}s and S{\'a}ndor Herodek and Gy{\"o}rgy Abrus{\'a}n",
year = "1998",
language = "English",
volume = "83",
pages = "361--368",
journal = "International Review of Hydrobiology",
issn = "1434-2944",
publisher = "Wiley-VCH Verlag",
number = "SPEC. ISS.",

}

TY - JOUR

T1 - The significance of various nitrogen sources for phytoplankton growth in shallow lake and hypertrophie reservoirs

AU - Présing, M.

AU - Vörös, Lajos

AU - Herodek, Sándor

AU - Abrusán, György

PY - 1998

Y1 - 1998

N2 - The contribution of nitrogen forms to the nitrogen demand of phytoplankton has been estimated in two basins of the oligo-mesotrophic Lake Balaton and its two hypertrophie pollution control reservoirs. The uptake rates were determined using 15N methodology, and by measuring concentration changes with time. N2-fixation were measured by the acetylene-reduction technique. The light dependence of uptake and N2-fixation was described with an exponential saturation equation. The dark uptake velocity of ammonium, nitrate and urea were 60-80%, 4-66% and 16-74% of light-saturated uptake, respectively. Ammonium, urea and nitrate uptakes were 51-85%, 12-42% and 2-8% of the total daily nitrogen uptake. In contrast, N2-fixation was insignificant (0-4%). The interaction of ammonium and nitrate uptake was determined in separate experiments, which demonstrated suppression of nitrate uptake at ammonium addition.

AB - The contribution of nitrogen forms to the nitrogen demand of phytoplankton has been estimated in two basins of the oligo-mesotrophic Lake Balaton and its two hypertrophie pollution control reservoirs. The uptake rates were determined using 15N methodology, and by measuring concentration changes with time. N2-fixation were measured by the acetylene-reduction technique. The light dependence of uptake and N2-fixation was described with an exponential saturation equation. The dark uptake velocity of ammonium, nitrate and urea were 60-80%, 4-66% and 16-74% of light-saturated uptake, respectively. Ammonium, urea and nitrate uptakes were 51-85%, 12-42% and 2-8% of the total daily nitrogen uptake. In contrast, N2-fixation was insignificant (0-4%). The interaction of ammonium and nitrate uptake was determined in separate experiments, which demonstrated suppression of nitrate uptake at ammonium addition.

KW - Ammonium preference

KW - Cyanobacteria

KW - Light-dependence

KW - Nitrogen uptake

UR - http://www.scopus.com/inward/record.url?scp=0006329819&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0006329819&partnerID=8YFLogxK

M3 - Article

VL - 83

SP - 361

EP - 368

JO - International Review of Hydrobiology

JF - International Review of Hydrobiology

SN - 1434-2944

IS - SPEC. ISS.

ER -