Stream Biogeochemistry Lab

Dept. of Limnology and Bio-Oceanography | University of Vienna

TEAM MEMBERS

Dr. Astrid Harjung

Research Interest

I am interested in the sources and fate of carbon in streams and rivers under different climates and hydrological extremes (droughts and floods). As hydrological extremes are occurring more frequent with climate change, there is a need to understand the impacts of these extremes on the ecological functions of streams and rivers. Especially, headwater streams are very sensitive to climatic and land-use changes and furthermore, they represent the first link between the terrestrial and the aquatic environment. Therefore, I find these small streams particularly exciting to study.

In my research, I am doing field studies and flume experiments, where I use a combination of high frequency sensors and lab analysis. With regards to lab analysis, I have focussed on spectroscopic techniques to investigate the quality of dissolved organic matter. Furthermore, I have used different techniques to estimate ecosystem metabolism in streams and experimental flumes.

Position

Post-DOC within the HYDRO-DIVERSITY project

Contact Information:

WasserCluster Lunz - Biologische Station
Dr. Carl Kupelwieser Promenade 5
A-3293 Lunz am See
Austria

E-mail: astrid.harjung@univie.ac.at

Or: Astrid.Harjung@wcl.ac.at

Peer-reviewed publications

Astrid Harjung, Nuria Perujo, Anna Romani, Andrea Butturini, Francesc Sabater, "Responses of functional microbial activity in the hyporheic zone to physical and chemical changes induced by a summer drought", In Freshwater Biology, 2019.

Astrid Harjung, Elisabet Ejarque, Tom Battin, Andrea Butturini, Francesc Sabater, Masumi Stadler, Jakob Schelker, "Experimental evidence reveals impact of drought periods on dissolved organic matter quality and ecosystem metabolism in subalpine streams", In Limnology and Oceanography, 2018.

Astrid Harjung, Francesc Sabater, Andrea Butturini, "Hydrological connectivity drives dissolved organic matter processing in an intermittent stream", In Limnologica - Ecology and Management of Inland Waters, 2017.

Benjamin W. Abbott, Viktor Baranov, Clara Mendoza-Lera, Myrto Nikolakopoulou, Astrid Harjung, Tamara Kolbe, Mukundh N. Balasubramanian, Timothy N. Vaessen, Francesco Ciocca, Audrey Campeau, Marcus B. Wallin, Paul Romeijn, Marta Antonelli, José Gonçalves, Thibault Datry, Anniet M. Laverman, Jean-Raynald de Dreuzy, David M. Hannah, Stefan Krause, Carolyn Oldham, Gilles Pinay, "Using multi-tracer inference to move beyond single-catchment ecohydrology", In Earth-Science Reviews, 2016.