Is the Hyporheic Zone Relevant beyond the Scientific Community?
2019
Lewandowski, Jörg | Arnon, Shai | Banks, Eddie | Batelaan, Okke | Betterle, Andrea | Broecker, Tabea | Coll, Claudia | Drummond, Jennifer D. | Gaona Garcia, Jaime | Galloway, Jason | Gomez-Velez, Jesus | Grabowski, Robert C. | Herzog, Skuyler P. | Hinkelmann, Reinhard | Höhne, Anja | Hollender, Juliane | Horn, Marcus A. | Jaeger, Anna | Krause, Stephan | Löchner Prats, Adrian | Magliozzi, Chiara | Meinikmann, Karin | Mojarrad, Brian Babak | Mueller, Birgit Maria | Peralta-Maraver, Ignacio | Popp, Andrea L. | Posselt, Malte | Putschew, Anke | Radke, Michael | Raza, Muhammad | Riml, Joakim | Robertson, Anne | Rutere, Cyrus | Schaper, Jonas L. | Schirmer, Mario | Schulz, Hanna | Shanafield, Margaret | Singh, Tanu | Ward, Adam S. | Wolke, Philipp | Wörman, Anders | Wu, Liwen
Rivers are important ecosystems under continuous anthropogenic stresses. The hyporheic zone is a ubiquitous, reactive interface between the main channel and its surrounding sediments along the river network. We elaborate on the main physical, biological, and biogeochemical drivers and processes within the hyporheic zone that have been studied by multiple scientific disciplines for almost half a century. These previous efforts have shown that the hyporheic zone is a modulator for most metabolic stream processes and serves as a refuge and habitat for a diverse range of aquatic organisms. It also exerts a major control on river water quality by increasing the contact time with reactive environments, which in turn results in retention and transformation of nutrients, trace organic compounds, fine suspended particles, and microplastics, among others. The paper showcases the critical importance of hyporheic zones, both from a scientific and an applied perspective, and their role in ecosystem services to answer the question of the manuscript title. It identifies major research gaps in our understanding of hyporheic processes. In conclusion, we highlight the potential of hyporheic restoration to efficiently manage and reactivate ecosystem functions and services in river corridors.
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