Universität zu Köln

Warner, Wiebke ORCID: 0000-0002-2250-7764, Zeman-Kuhnert, Sebastian, Heim, Christine ORCID: 0000-0003-4716-9316, Nachtigall, Solveig and Licha, Tobias (2021). Seasonal and spatial dynamics of selected pesticides and nutrients in a small lake catchment - Implications for agile monitoring strategies. Chemosphere, 281. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 1879-1298

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Abstract

Intensive anthmpogenic pressure such as high inputs of nutrients and pesticides severely threaten most European water bodies. Small catchments <= 10 km(2) are not monitored under the Water Framework Directive but play an important role in freshwater ecosystems. The high complexity in seasonal and spatial dynamics require more than a one-size-fits-all approach in water quality monitoring. Often located in rural areas with a high agricultural activity, small catchments often carry high amounts of nutrients, pesticides and their transformation products affecting drinking water resources. With a low-cost approach of a monthly sampling campaign over the course of one year combined with meaningful indicators for potential pollution sources within the catchment this study could elucidate catchment dynamics and two hotspots for pesticides and nutrients. Two different groups of pesticides were observed (I) pesticides on long-term use which were applied in high amounts over the last decades (e.g., chloridazon and its transformation products) and (II) pesticides on short-term use, newly introduced into the market. Especially transformation products of pesticides from group (I) together with nitrate showed a steady release from two fields into the receiving water bodies over the year, probably being stored in the soil layers over the years of application slowly leaching out. Pesticides from group (II) showed a strong seasonality, released from another hotspot area probably due to run-off shortly after application. Streamlining this knowledge into targeted measures and an agile monitoring strategy for the respective catchments may allow a sustainable improvement of water quality and a better ecosystem protection.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Warner, Wiebke UNSPECIFIED orcid.org/0000-0002-2250-7764 UNSPECIFIED Zeman-Kuhnert, Sebastian UNSPECIFIED UNSPECIFIED UNSPECIFIED Heim, Christine UNSPECIFIED orcid.org/0000-0003-4716-9316 UNSPECIFIED Nachtigall, Solveig UNSPECIFIED UNSPECIFIED UNSPECIFIED Licha, Tobias UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-586577
DOI:	10.1016/j.chemosphere.2021.130736
Journal or Publication Title:	Chemosphere
Volume:	281
Date:	2021
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	1879-1298
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language POLAR ORGANIC CONTAMINANTS; WASTE-WATER; SURFACE WATERS; ARTIFICIAL SWEETENER; DEGRADATION-PRODUCTS; MICRO-POLLUTANTS; DRINKING-WATER; KARST SYSTEM; LAND-USE; PHOSPHORUS Multiple languages Environmental Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58657