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Aquatic chemical ecology meets ecotoxicology

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Abstract

Chemical ecology and ecotoxicology are research directions that emerged between the 1950s and 1970s following a rise in awareness for info- or allelochemicals influencing biotic interactions or ecological and ecosystem consequences of anthropogenic pollutants. The aim of this paper, focussing mainly on freshwater systems, is to present already existing links between both disciplines and to outline the potential of a strengthened alliance for a better evaluation of environmental risks. A wide range of anthropogenic or natural contaminants may cause a so-called infodisruption, the disturbance of infochemical-mediated biotic interactions. Metals, pesticides and personal care products are among the most cited pollutants that might interfere with the chemical ecology of organisms. Given the widespread environmental pollution in the current era of the Anthropocene, it seems important to consider disturbances such as “infodisruption” in environmental risk assessment. Chemical ecology can provide new response factors that might help identifying sublethal effects of pollutants. Further, exploring natural, non-toxic alternatives to currently used biocides can help in risk management. The link between both disciplines should be fostered as both are already multi- and interdisciplinary fields, and developing common themes between chemical ecology and ecotoxicology might enhance a deeper understanding of ecological processes. It can also help to achieve the aim of the 2020 European chemicals strategy for sustainability towards a toxic-free environment.

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Acknowledgements

I would like to dedicate this article to Winfried Lampert, who sadly passed away on March 6, 2021. His vision on aquatic chemical ecology starting with his directorate at the Max-Planck Institute of Limnology (Plön, Germany) in the 1980s brought together a large group of enthusiastic students and researchers, including me. People were working on diverse projects, mainly on chemical communication in the pelagic zone such as interactions of Daphnia with fish, invertebrate predators or algae, but also on allelopathy and benthic chemical ecology. Many of us who worked during that time in Plön are still working in the field of aquatic chemical ecology, showing the tremendous influence this period had on the field. This article is also a contribution to the celebrations of the 50th anniversary of ecotoxicology, as the foundation of the discipline has been at Metz, France, in a predecessor institute of the current Interdisciplinary Laboratory of Continental Environments (Laboratoire Interdisciplinaire des Environnements Continentaux; LIEC) where the author is working. Many thanks to Joey Allen and Luc Härter for providing some artworks used in Fig. 1, and to Vinita Vijayaraj for editing the English. The very constructive and thoughtful editor and reviewer comments are highly appreciated.

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The author has no relevant financial or non-financial interests to disclose.

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Gross EM contributed to conceptualization, methodology, writing—original draft preparation, and writing—review and editing.

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Correspondence to Elisabeth M. Gross.

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The manuscript is a review, and thus no experiments were performed involving human participants and/or animals.

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Handling Editor: Olivier P. Thomas.

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Gross, E.M. Aquatic chemical ecology meets ecotoxicology. Aquat Ecol 56, 493–511 (2022). https://doi.org/10.1007/s10452-021-09938-2

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  • DOI: https://doi.org/10.1007/s10452-021-09938-2

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