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1000 Titel
  • Complete exhaustion of dissolved nutrients in a large lowland river
1000 Autor/in
  1. Kamjunke, Norbert |
  2. Sanders, Tina |
1000 Verlag Springer International Publishing
1000 Erscheinungsjahr 2024
1000 Publikationstyp
  1. Artikel |
1000 Online veröffentlicht
  • 2024-06-25
1000 Erschienen in
1000 Quellenangabe
  • 196(7):660
1000 Copyrightjahr
  • 2024
1000 Lizenz
1000 Verlagsversion
  • https://doi.org/10.1007/s10661-024-12834-5 |
  • https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11199228/ |
1000 Publikationsstatus
1000 Begutachtungsstatus
1000 Sprache der Publikation
1000 Abstract/Summary
  • <jats:title>Abstract</jats:title><jats:p>Riverine phytoplankton takes up phosphate, dissolved silicate, and nitrate. We investigated which nutrients are depleted during a Lagrangian sampling in the free-flowing part of the River Elbe in 2023. As part of this study, we tested the hypotheses that nutrient depletion might be caused by (1) above-average phytoplankton biomass or by (2) decreased nutrient load of the river during previous years. Phytoplankton biomass increased up to 350 km in rivers and stopped increasing exactly when soluble reactive phosphorus had been completely consumed, and molar carbon to phosphorus ratios of seston indicated the beginning phosphorus limitation. The concentrations of dissolved silicate and nitrate dropped below the detection limit as well. In contrast to the results from eight previous longitudinal samplings taken in 2018–2022, nitrate exhaustion was detected for the first time in 2023 within the transect. This was caused neither by an above-average phytoplankton biomass nor by a declined overall nutrient load of the river in 2018–2023. Instead, denitrification appears to be the most plausible explanation for the downstream decrease of nitrate and the loss of total nitrogen which was supported by enrichment of nitrate stable isotopes and a decreasing ratio of nitrate <jats:sup>15</jats:sup>N/<jats:sup>18</jats:sup>O.</jats:p>
1000 Sacherschließung
lokal Phosphates/analysis [MeSH]
lokal Water Pollutants, Chemical/analysis [MeSH]
lokal Phosphorus
lokal Phytoplankton
lokal Biomass [MeSH]
lokal Rivers/chemistry [MeSH]
lokal Denitrification
lokal Nutrients/analysis [MeSH]
lokal Environmental Monitoring [MeSH]
lokal Phytoplankton [MeSH]
lokal Phosphorus/analysis [MeSH]
lokal Silicates/analysis [MeSH]
lokal Research
lokal Silicate
lokal Nitrate
lokal Nitrate stable isotopes
lokal Nitrates/analysis [MeSH]
lokal Nitrogen/analysis [MeSH]
1000 Fächerklassifikation (DDC)
1000 Liste der Beteiligten
  1. https://frl.publisso.de/adhoc/uri/S2FtanVua2UsIE5vcmJlcnQ=|https://frl.publisso.de/adhoc/uri/U2FuZGVycywgVGluYQ==
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1000 Label
1000 Förderer
  1. Helmholtz-Zentrum für Umweltforschung GmbH - UFZ |
1000 Fördernummer
  1. -
1000 Förderprogramm
  1. -
1000 Dateien
  1. Complete exhaustion of dissolved nutrients in a large lowland river
1000 Förderung
  1. 1000 joinedFunding-child
    1000 Förderer Helmholtz-Zentrum für Umweltforschung GmbH - UFZ |
    1000 Förderprogramm -
    1000 Fördernummer -
1000 Objektart article
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1000 @id frl:6509055.rdf
1000 Erstellt am 2025-02-06T19:11:40.344+0100
1000 Erstellt von 322
1000 beschreibt frl:6509055
1000 Zuletzt bearbeitet 2025-09-14T17:12:03.093+0200
1000 Objekt bearb. Sun Sep 14 17:12:03 CEST 2025
1000 Vgl. frl:6509055
1000 Oai Id
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