Groundwater-surface water interfaces (e.g., hyporheic and benthic zones and riparian corridors) are integral components of the aquifer-river or aquifer-lake continuum. Interactions between groundwater and surface water lead to strong bi-directional influences between surface waters, aquifers and interconnecting hyporheic zones. A rapidly expanding number of research projects are now investigating the implications of hyporheic exchange on the transport and transformation of nutrients and contaminants within river networks, and on controls to heat, oxygen, and organic matter budgets available to microorganisms and macroinvertebrates in streambed sediments. However, there is still a need to better understand the links between physical, biogeochemical, and ecological process dynamics in groundwater-surface water interfaces and their implications for fluvial ecology or limnology, respectively. Furthermore, it is important to consider the response of hyporheic exchange fluxes to environmental and climatic controls at different spatial and temporal scales (e.g. river channel, alluvial aquifer, regional groundwater flow). We consider up- and downscaling and the development of a general conceptual framework and improved process understanding for groundwater-surface water interfaces as among the most urgent challenges of hyporheic zone research. Consequently, we particularly welcome contributions that aim to close these knowledge gaps and solicit both experimental and modelling studies with a focus on:

- The development and application of novel experimental methods to investigate physical, biogeochemical and ecological conditions at the groundwater-surface water interface in rivers, lakes, riparian corridors, and wetlands;

- Investigations of the role of hyporheic processes for the retention and natural attenuation of nutrients and pollutants, particularly with respect to impacts on surface water and groundwater quality;

- Hydrological, biogeochemical and ecological modelling approaches (e.g. transient storage models, coupled groundwater-surface water models etc.);

- Investigations of the implications of groundwater-surface water interactions for management and risk assessment frameworks with regard to the European Water Framework Directive.

Co-organized as BG6.5
Convener: Jen Drummond | Co-conveners: Fulvio Boano, Jan Fleckenstein, Stefan Krause, Jörg Lewandowski
| Mon, 08 Apr, 14:00–18:00
Room 2.15
| Attendance Mon, 08 Apr, 10:45–12:30
Hall A

Monday, 8 April 2019 | Room 2.15

Chairperson: Jen Drummond, Stefan Krause
14:00–14:15 |
Vince Kaandorp, Pieter Doornenbal, Henk Kooi, Hans Peter Broers, and Perry de Louw
14:15–14:30 |
Susa Stonedahl, Jen Drummond, Forrest Stonedahl, Andrea Bonetto, Sheiny Tjia-Fleck, Bradley Wheeler, and Ethan Zeller
14:30–14:45 |
Oscar Jimenez Fernandez, Marc Schwientek, Karsten Osenbrueck, Clarissa Glaser, Christian Schmidt, and Jan Fleckenstein
15:00–15:15 |
Shai Arnon, Yonathan Teitelbaum, Jonathan Dallmann, Colin Philips, Rina Schumer, Nicole Sund, and Aaron Packman
15:15–15:30 |
Gianluca Bergami, Peter Molnar, and Paolo Burlando
15:30–15:45 |
Camille Vautier, Ronan Abhervé, Tamara Kolbe, Luca Guillaumot, Jean Marçais, Ben Abbott, Christophe Petton, Thierry Labasque, Eliot Chatton, Aurélie Guillou, Anniet Laverman, Luc Aquilina, Gilles Pinay, and Jean-Raynald de Dreuzy
Coffee break
Chairperson: Fulvio Boano, Jörg Lewandowski
16:15–16:30 |
| solicited
Daniele Tonina, Alessandra Marzadri, Martha Dee, Alberto Bellin, and Jennifer Tank
16:30–16:45 |
Benjamin Gilfedder, Stefan Durejka, Hugo Le Lay, Zahra Thomas, and Sven Frei
16:45–17:00 |
Liwen Wu, Jesus Gomez-Velez, Tanu Singh, Jörg Lewandowski, Anders Wörman, Gunnar Nützmann, and Stefan Krause
17:00–17:15 |
Barbara Glaser, Daniel Partington, René Therrien, Marta Antonelli, Philip Brunner, Luisa Hopp, and Julian Klaus
17:30–17:45 |
Marco Ghisalberti, Joey Voermans, and Gregory Ivey
17:45–18:00 |
Jesus Gomez-Velez, Judson Harvey, Durelle Scott, and Noah Schmadel