Pesticides and their transformation products in lentic small water bodies - effect of hydrology, substance properties and field management
Final Report Abstract
The research project investigated the contamination of two small standing water bodies (SSWB) in the North German lowlands by plant protection products (PPP) and their transformation products (TP). These water bodies are of great importance to the agricultural landscape, as they are eco-hydrologically valuable and provide habitats for numerous species. At the same time, due to their location amidst agricultural fields, they are particularly vulnerable to PPP inputs, which can have significant environmental impacts. The aim of the project was to analyze the entry pathways, distribution, and long-term effects of PPP and TP, taking into account hydrological conditions and agricultural land use. The research findings indicate that hydrology, particularly interactions with shallow groundwater and the influence of drainage systems, plays a central role in the contamination of SSWB. In addition to seasonal fluctuations in water inflows and outflows, highly variable inputs of PPP and TP were observed. In one of the SSWB, the drainage led to considerable substance inputs, while in the other SSWB without a drainage, mainly the shallow groundwater caused the inputs. The physicochemical properties of PPP and TP, along with their application practices, affect the contamination of the SSWB. The project revealed high variability in the mobility and persistence of the substances studied, which can be applied during the vegetation period to an agricultural field. Highly mobile PPP and TP were detected in higher concentrations in shallow groundwater and the SSWB than less mobile substances. These PPP/TP showed a stronger bonding to soil and sediment, which reduced their movement. These differences in PPP/TP properties have a major influence on the concentration dynamics in the water bodies. Another key finding is that the contamination of SSWB is not solely attributed to current PPP applications. Rather, the findings suggest that PPP can be stored in soil or sediment for long periods and can be released under certain conditions, such as high soil moisture or seasonal hydrological changes. These processes lead to ongoing contamination of the water bodies, even after the end of PPP application. The detailed analysis of hydrological entry pathways and the determination of PPP/TP concentrations in various environmental compartments provide important insights for water protection. The long-term presence of TP and multiple substance contamination in particular pose a significant risk to water quality. Overall, the project significantly contributes to the understanding of the complex interactions between agricultural practices, hydrology, and water contamination. It provides a framework for developing sustainable protection measures to preserve and promote the ecological functions of SSWB in agriculturally dominated landscapes.
Publications
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Pflanzenschutzmittel und ihre Transformationsprodukte in stehenden Kleingewässern des Kielstau-Einzugsgebiets, Vortrag beim 16. Hydrologie-Workshop der Abteilung Hydrologie und Wasserwirtschaft, Kiel, Deutschland
L.P. Loose, U. Ulrich & N. Fohrer
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Pflanzenschutzmittel und ihre Transformationsprodukte in stehenden Kleingewässern, Vortrag bei dem 17. Hydrologie-Workshop der Abteilung Hydrologie und Wasserwirtschaft, Kiel, Deutschland
L.P. Loose, U. Ulrich & N. Fohrer
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Pflanzenschutzmittel und ihre Transformationsprodukte in stehenden Kleingewässern, Vortrag bei der DGL Jahrestagung 2021, Leipzig, Deutschland
L.P. Loose, U. Ulrich & N. Fohrer
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Pesticides in small water bodies - kettle holes in northern Germany, Vortrag bei den 6th Poznań Days, Kiel, Deutschland
L.P. Loose, U. Ulrich & N. Fohrer
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Pflanzenschutzmittelbelastung zweier Sölle im Kielstau Einzugsgebiet, Vortrag bei dem 18. Hydrologie-Workshop der Abteilung Hydrologie und Wasserwirtschaft, Kiel, Deutschland
L.P. Loose, U. Ulrich & N. Fohrer
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Plant protection products and their transformation products in kettle holes - temporal dynamics and influence of different input pathways, Vortrag bei der Konferenz “Pesticide Behaviour in Soils, Water and Air 2022“, York, United Kingdom
L.P. Loose, U. Ulrich & N. Fohrer
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Plant protection products and their transformation products in kettle holes - temporal dynamics and influence of different input pathways, Vortrag im Kick off Workshop Water Resources under pressure: Challenges and future perspectives for Ethiopian water bodies, Kiel, Deutschland
L.P. Loose, U. Ulrich & N. Fohrer
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Untersuchungen zur hydrologischen Konnektivität und Pflanzenschutzmittelbelastung von stehenden Kleingewässern, Poster bei dem Tag der Hydrologie 2022, München, Deutschland
L.P. Loose, U. Ulrich & N. Fohrer
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Die hydrologische Vernetzung und Pflanzenschutzmittelbelastung eines stehenden Kleingewässers in Norddeutschland, Vortrag bei dem Tag der Hydrologie 2023, Bochum, Deutschland
L.P. Loose, J. Lange, A. Budde, B. Herbstritt, U. Ulrich & N. Fohrer
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Ein Multi-Methoden-Ansatz zur Identifizierung und Quantifizierung der Wasserhaushaltskomponenten zweier stehender Kleingewässer, Vortrag bei dem 19. Hydrologie-Workshop der Abteilung Hydrologie und Wasserwirtschaft, Kiel, Deutschland
L.P. Loose, J. Lange, A. Budde, B. Herbstritt, U. Ulrich & N. Fohrer
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Pflanzenschutzmittel und ihre Transformationsprodukte in stehenden Kleingewässern - Einfluss von Hydrologie, Stoffeigenschaften und Flächenmanagement, Vortrag in der Expertengruppe Gewässerschutz und WRRL, Deutsche Bahn, online
L.P. Loose, J. Lange, A. Budde, B. Herbstritt, U. Ulrich & N. Fohrer
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Pflanzenschutzmittel und ihre Transformationsprodukte in stehenden Kleingewässern Einfluss von Hydrologie, Stoffeigenschaften und Flächenmanagement, Vortrag bei der GDCh AK Umweltmonitoring, online
L.P. Loose, J. Lange, A. Budde, B. Herbstritt, U. Ulrich & N. Fohrer
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The pesticide contamination and hydrological connectivity of two lentic small water bodies in northern Germany, Vortrag bei der 28. IUGG-Generalversammlung (IUGG2023), Berlin, Deutschland
L.P. Loose, J. Lange, A. Budde, B. Herbstritt, U. Ulrich & N. Fohrer
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A multi‐method approach for the identification and quantification of water balance components of two lentic small water bodies. Hydrological Processes, 38(1).
Loose, Lukas P.; Lange, Jens; Budde, Aaron; Herbstritt, Barbara; Fohrer, Nicola & Ulrich, Uta
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Assessing Plant Protection Product and Transformation Product Contamination in the Soils Surrounding Lentic Small Water Bodies: A High-Resolution Study in Northern Germany, Poster bei der SETAC 2024 Europe 34th Annual Meeting, Sevilla, Spanien
L.P. Loose, U. Ulrich & N. Fohrer
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Ein Multi-Methoden-Ansatz zur Identifizierung und Quantifizierung der Wasserhaushaltskomponenten zweier stehender Kleingewässer, Poster bei dem Tag der Hydrologie 2024, Berlin, Deutschland
L.P. Loose, J. Lange, A. Budde, B. Herbstritt, U. Ulrich & N. Fohrer
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Investigating Pesticide and Transformation Product Pollution Dynamics in Soils surrounding Lentic Small Waterbodies in Northern Germany, Poster bei dem XVII Symposium in Pesticide Chemistry, Piacenza, Italien
L.P. Loose, U. Ulrich & N. Fohrer
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Pesticide transformation dynamics in the water phasesediment interaction of Lentic Small Water Bodies, Poster bei dem XVII Symposium in Pesticide Chemistry, Piacenza, Italien
U. Ulrich, L.P. Loose & N. Fohrer
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Pflanzenschutzmittel und ihre Transformationsprodukte in stehenden Kleingewässern, Vortrag und Poster im Science Slam der 74. Hochschultagung: Diversität im Agrar- und Ernährungssektor – CAU Kiel, Kiel, Deutschland
L.P. Loose, U. Ulrich & N. Fohrer
