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Ulrich U, Hörmann G, Unger M, et al. Lentic small water bodies: Variability of pesticide transport and transformation patterns. Sci Total Environ. 2017;618:26-38doi: 10.1016/j.scitotenv.2017.11.032.
Ulrich, U., Hörmann, G., Unger, M., Pfannerstill, M., Steinmann, F., & Fohrer, N. (2018). Lentic small water bodies: Variability of pesticide transport and transformation patterns. The Science of the total environment, 61826-38. https://doi.org/10.1016/j.scitotenv.2017.11.032
Ulrich, Uta, et al. "Lentic small water bodies: Variability of pesticide transport and transformation patterns." The Science of the total environment vol. 618 (2018): 26-38. doi: https://doi.org/10.1016/j.scitotenv.2017.11.032
Ulrich U, Hörmann G, Unger M, Pfannerstill M, Steinmann F, Fohrer N. Lentic small water bodies: Variability of pesticide transport and transformation patterns. Sci Total Environ. 2018 Mar 15;618:26-38. doi: 10.1016/j.scitotenv.2017.11.032. Epub 2017 Nov 09. PMID: 29128775.
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Sci Total Environ. 2018 Mar 15;618:26-38. doi: 10.1016/j.scitotenv.2017.11.032. Epub 2017 Nov 09.

Lentic small water bodies: Variability of pesticide transport and transformation patterns.

The Science of the total environment

Uta Ulrich, Georg Hörmann, Malte Unger, Matthias Pfannerstill, Frank Steinmann, Nicola Fohrer

Affiliations

  1. Institute of Natural Resource Conservation, Christian-Albrechts University Kiel, Olshausenstr. 75, 24118 Kiel, Germany. Electronic address: [email protected].
  2. Institute of Natural Resource Conservation, Christian-Albrechts University Kiel, Olshausenstr. 75, 24118 Kiel, Germany. Electronic address: [email protected].
  3. Gesellschaft für Freilandökologie und Naturschutzplanung, Stuthagen 25, 24113 Molfsee, Germany. Electronic address: [email protected].
  4. State Agency for Agriculture, the Environment and Rural Areas Schleswig-Holstein, Hamburger Chaussee 25, 24220 Flintbek, Germany. Electronic address: [email protected].
  5. State Agency for Agriculture, the Environment and Rural Areas Schleswig-Holstein, Hamburger Chaussee 25, 24220 Flintbek, Germany. Electronic address: [email protected].
  6. Institute of Natural Resource Conservation, Christian-Albrechts University Kiel, Olshausenstr. 75, 24118 Kiel, Germany. Electronic address: [email protected].

PMID: 29128775 DOI: 10.1016/j.scitotenv.2017.11.032

Abstract

Lentic small water bodies have a high ecological potential as they fulfill several ecosystem services such as the retention of water and pollutants. They serve as a hot spot of biodiversity. Due to their location in or adjacent to agricultural fields, they can be influenced by inputs of pesticides and their transformation products. Since small water bodies have rarely been part of monitorings/campaigns up to now, their current exposure and processes guiding the pesticide input are not understood, yet. This study presents results of a sampling campaign of 10 lentic small water bodies from 2015 to 2016. They were sampled once after the spring application for a pesticide target screening, before autumn application and three times after rainfall events following the application. The autumn sampling focused on the herbicides metazachlor, flufenacet and their transformation products - oxalic acid and - sulfonic acid as representatives for common pesticides in the study region. The concentrations were associated with rainfall before and after application, characteristics of the site and the water bodies, physicochemical parameters and the applied amount of pesticides. The key results of the pesticide screening in spring indicate positive detections of pesticides which have not been applied for years to the single fields. The autumn sampling showed frequent occurrences of the transformation products, which are formed in soil, from 39% to 94% of all samples (n=71). Discharge patterns were observed for metazachlor with highest concentrations in the first sample after application and then decreasing, but not for flufenacet. The concentrations of the transformation products increased over time and revealed highest values mainly in the last sample. Besides rainfall patterns right after application, the spatial and temporal dissemination of the pesticides to the water bodies seems to play a major role to understand the exposure of lentic small water bodies.

Copyright © 2017 Elsevier B.V. All rights reserved.

Keywords: Flufenacet; Input pathways; Lentic small water bodies; Metazachlor; Pesticides; Pond; Transformation products

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