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Why We Need Sustainable Networks Bridging Countries, Disciplines, Cultures and Generations for Aquatic Biomonitoring 2.0: A Perspective Derived From the DNAqua-Net COST Action

By Florian Leese, Agnes Bouchez, Kessy Abarenkov, Florian Altermatt, Angel Borja, Kat Bruce, Torbjorn Ekrem, Fedor Čiampor, Zuzana Čiampor, Filipe Costa, Sofia Duarte, Vasco Elbrecht, Diego Fontaneto, Alain Franc, Matthias Geiger, Daniel Hering, Maria Kahlert, Belma Kalamujić Stroil, Martyn Kelly, Emre Keskin, Igor Liska, Patricia Mergen, Kristian Meissner, Jan Pawlowski, Lyubomir Penev, Yorick Reyjol, Ana Rotter, Dirk Steinke, Bas van der Wal, Simon Vitecek, Jonas Zimmermann and Alexander Weigand

Abstract

International audienceconsequence of strong anthropogenic pressures affecting the health of lakes, rivers, oceans and groundwater. A typical assessment of the environmental quality status, such as it is required by European but also North American and other legislation, relies on matching the composition of assemblages of organisms identified using morphological criteria present in aquatic ecosystems to those expected in the absence of anthropogenic pressures. Through decade-long and difficult intercalibration exercises among networks of regulators and scientists in European countries, a pragmatic biomonitoring approach was developed and adopted, which now produces invaluable information. Nonetheless, this approach is based on several hundred different protocols, making it susceptible to issues with comparability, scale and resolution. Furthermore, data acquisition is often slow due to a lack of taxonomic experts for many taxa and regions and time-consuming morphological identification of organisms. High-throughput genetic screening methods such as (e)DNA metabarcoding have been proposed as a possible solution to these shortcomings. Such “next-generation biomonitoring”, also termed “biomonitoring 2.0”, has many advantages over the traditional approach in terms of speed, comparability and costs. It also creates the potential to include new bioindicators and thereby further improves the assessment of aquatic ecosystem health. However, several major conceptual and technological challenges still hinder its implementation into legal and regulatory frameworks. Academic scientists sometimes tend to overlook legal or socioeconomic constraints, which regulators have to consider on a regular basis. Moreover, quantification of species abundance or biomass remains a significant bottleneck to releasing the full potential of these approaches. Here, we highlight the main challenges for next-generation aquatic biomonitoring and outline principles and good practices to address these with an emphasis on bridging traditional disciplinary boundaries between academics, regulators, stakeholders and industry

Topics: Water Framework Directive, Water quality, Directive, Framework, Marine Strategy, Bioassessment Biotic index Environmental legislation, Freshwater, Marine, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
Publisher: 'Elsevier BV'
Year: 2018
OAI identifier: oai:HAL:hal-01984996v1
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