Summary
The aquatic-terrestrial transition areas, riparian zones, recognized as biodiversity hotspots, are increasingly subjected to various stressors, including chemical contaminants such as pesticides. These compounds can be transported into the riparian zone, from surrounding agricultural fields, e.g., via surface runoff, but also from the aquatic environments, e.g. during flooding events. However, little is known about how flood frequency and duration affect this aquatic-terrestrial transfer. To investigate the flood-mediated pesticide transport, we conducted an experiment in 16 flow-through unit mesocosms, each unit containing a stream supplied with water from an agriculturally influenced river, and an adjacent riparian area. We simulated flooding events with varying duration of three, seven
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