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  • Beitragsserie: Vom Labor ins Freiland (siehe UWSF 1/97, S. 1–5)
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Veränderung von Biokonzentration und Wirkung vom PSM in Anwesenheit von Huminstoffen

Change of bioconcentration and effect of pesticides in the presence of humic substances

Umweltwissenschaften und Schadstoff-Forschung volume 9, pages 64–68 (1997)Cite this article

Zusammenfassung

Huminstoffe, im Freiwasser im wesentlichen Fulvosäuren, können auf Organismen einen fördernden oder auch einen hemmenden Einflß ausüben. Dies wurde an bakterienhaltigen Algenkulturen, ebenso wie an Nematoden-Kulturen nachgewiesen. Die für derartige Effekte verantwortlichen Strukturelemente der Huminstoffe sind noch nicht bekannt.

Fulvosäuren können ferner als Mediatoren für eine verstärkte Biokonzentration und—für aquatische Ökosysteme noch bedeutsamer —für die Zunahme von toxischen Wirkungen auftreten. Dies gilt nicht nur für den ökologisch unbedeutenden Fall von akut-toxischen Wirkungen, sondern insbesondere auch für subletale Langzeitwirkungen.

Abstract

Humic substances, in aqueous bodies primarily fulvic acids, may demonstrate an inhibitory as well as an activating influence on organisms. We present evidence with bacteria-containing algal cultures and with cultures of the nematodeCaenorhabditis elegans. Structural elements of the fulvic acids which may be responsible for such effects are not yet known.

Furthermore, the presence of fulvic acids may lead to increases in bioconcentration of xenobiotics. Increase in the toxicity of xenobiotics in the presence of humic substances have also been described. We present studies applying lethal as well as sublethal toxicity endpoints.

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Authors and Affiliations

  1. Institut für Gewässerökologie und Binnenfischerei, Müggelseedamm 310, D-12587, Berlin

    Christian Steinberg, Markus Haitzer, Sebastian Höss & Rainer Brüggemann

  2. Institut für Zoologie, Ludwig-Maximilian-Universität München, Karlstr. 23–25, D-80333, München

    Markus Haitzer & Sebastian Höss

  3. GSF, Institut für Toxikologie, Postfach 1159, D-85758, Oberschleißheim

    Renate Lorenz

  4. Canada Center of Inland Waters, Burlington, Ontario, Kanada

    B. Kent Burnison

Authors
  1. Christian Steinberg
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  2. Markus Haitzer
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  3. Sebastian Höss
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  4. Renate Lorenz
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  5. Rainer Brüggemann
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  6. B. Kent Burnison
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Correspondence to Christian Steinberg.

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PSM=Pflanzenschutzmittel

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Steinberg, C., Haitzer, M., Höss, S. et al. Veränderung von Biokonzentration und Wirkung vom PSM in Anwesenheit von Huminstoffen. UWSF - Z Umweltchem Ökotox 9, 64–68 (1997). https://doi.org/10.1007/BF02937840

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