A training network for enhancing the understanding of complex physical, chemical and biological process interactions in hyporheic zones


3rd HypoTRAIN podcast out now!!!


The podcast gives insights into the second HypoTRAIN joint experiments in the summer of 2017. The ESRs conducted flume experiments to better understand the processes driving attenuation and degradation of micropollutants in river systems. Of course the focus was on the role of the hyporheic zone. Have fun watching!






Final programme out now!


We, the HypoTRAIN consortium, invite everyone interested in hyporheic zones to the 2nd European Hyporheic Forum (EHF)! 

When: 25 - 27 April 2018

Where: University of Roehampton, London, UK

What: With the EHF we aim at facilitating scientific exchange, fostering fast knowledge transfer between disciplines and providing a platform for mutual feedback between science, regulation, and practice related to hyporheic processes. 


Three sessions will comprise a broad variety of topics: 

1. Hydrology of Hyporheic Zones

2. Biogeochemistry of Hyporheic Zones

3. Ecology of Hyporheic Zones 


Keynote talks: 

We are happy to announce that Julia Knapp from the Center for Applied Geoscience at University of Tübingen will give a keynote talk at the EHF. Julia works on reactive transport modeling and experiments to gain a better understanding of contaminant degradation and nutrient turnover in streams.


Furthermore, John Iwan Jones from the River Communities Group at Queen Mary University London, will share his experience with the impact of fine sediment on river ecosystems in another keynote talk.


A third keynote talk will be held by Fulvio Boano from the Group of Environmental Fluid Mechanics, Politecnico di Torino. Fulvio is an expert on surface-subsurface water interactions including nutrient removal. 



Click here for the programme overview! 


To have a look into the abstracts for talks please click here!


Registration fee: 80 € (regular), 60 € (for participants presenting a talk or poster) 


Interested? Then send an email to meinikmann@igb-berlin.de


The HypoTRAIN team is looking forward to welcome you in Roehampton!



New hypotrain publication out now!


New hypotrain publication out now! 

Ignacio (Nacho) and his co-authors just published a review paper on the "Interplay of hydrology, community ecology and pollutant attenuation in the hyporheic zone"! Here is the abstract:


  1. We describe the hierarchical interplay of hydrology, hyporheic ecology and transformation of nutrients and pollutants in the hyporheic zone (HZ). The exchange of water between the surface-subsurface generates the hyporheic exchange flow: the engine that drives the ecological functioning of the HZ. The magnitude and direction of hydrological fluxes in the HZ follow complex spatial patterns, strongly influenced by the temporal dynamics of surface flow in rivers.
  2. The direction and magnitude of hydrological fluxes also shapes the structure of hyporheic communities (hyporheos). During surface disturbances such as flooding or drought, benthic organisms may also use the HZ as a refuge, although the importance of this role is debated.
  3. Streambed organisms differ in their ability to colonize the HZ depending on the biological traits they possess. The reduction in oxygen concentration and pore size with increasing sediment depth imposes a limit on the distribution of macroinvertebrates, which are replaced by a suite of smaller organisms (meiofauna and protists) at deeper sediment layers. Therefore, a concomitant reduction in net biomass and productivity might be expected through depth. However, only a few studies have assessed the contribution of the hyporheos to whole system production, and they have focused only on the fraction of relatively large organisms.
  4. The bioreactor ability of the HZ to transform nutrients and pollutants is an important ecosystem service sustained by the life activities of hyporheos. Biofilms have the key role in this process due to their capacity to metabolize a wide range of dissolved compounds, including emerging pollutants. However, the residence time of water in pore sediments (resulting from hyporheic exchange flow) and the rest of the community (constantly reworking the sediments and grazing biofilms) are indirectly involved.


The full paper can be downloaded here: http://www.sciencedirect.com/science/article/pii/S004896971732034X



Interactive map about Joint Field Experiments in Germany available

Joint Field Experiments (JFEs). Study site was the River Erpe, a lowland river receiving 42.500 m3 day-1 of treated waste water from a nearby treatment plant (dry weather conditions). During the daily peaks waste water represents 80% of the overall discharge of the river. The ESRs collaborated in a number of experiments and investigations which were conducted simultaneously in and at the river and its hyporheic zone. This interactive map introduces some of the ESRs and their work at the River Erpe:




Summer School HypoBASICS in Berlin

In June all early stage researchers (ESRs) of hypoTRAIN met for the very first time within the summer school "HypoBASISC - a summer school on hyporheic zone processes". Together with their supervisors and a lot of other PhD students working on the same topic they experienced a week full of interesting lectures, discussions, and personal encounters. The summer school took place at the Leibniz-Institute of Freshwater Ecology and Inland Fisheries in Berlin, Germany. We thank all participants for the wonderful time we spent together!

Group picture summer school

Kick-off-meeting on January 19, 2015

Kick-off-meeting on January 19, 2015

The HypoTRAIN kick-off meeting took place on January 19 on the premises of IGB in Berlin. All project leaders discussed common strategies to harmonize experimental approaches and details on the organization of the network activities.

Participants Kick-off meeting


This project is a Marie Skłodowska-Curie Innovative Training Network (ITN) and has received funding from the European Union's EU Framework Programme for Research and Innovation Horizon 2020.