Stream Biogeochemistry Lab


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

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PROJECTS

Current Projects
    EXCARB - Influence of climate extremes on carbon dynamics
    HYDRO-DIVERSITY - Soil-stream connectivity effects on diversity
    INTERFACES - Ecohydrological interfaces as critical hotspots



HYDRO-DIVERSITY - The Role of Hydrological Connectivity of Catchment Soils and Streams for the Biodiversity and Functioning of Pre-Alpine Stream Ecosystems

 

The HYDRO-DIVERSITY project is headed by Jakob Schelker. Collaborators within the project are Dr. Katharina Besemer from the Wassercluster Lunz and em. Prof. Peter Peduzzi from the University of Vienna. The project is funded by the Austrian Acadamy of Sciences from 2017-2020.

Abstract: Small headwater streams interlink catchment soils with the river network and contribute substantially to CO2 emissions of inland waters. At the same time, recent studies have identified small streams as ‘critical reservoirs’ of microbial diversity, but the origin of this diversity is not well understood. The core objective of the HYDRO-DIVERSITY project it therefore to investigate the dynamic transfer of dissolved organic matter (DOM) and microbial life from catchment soils to streams and to evaluate the impact of these influxes on stream biofilm community composition and biodiversity. The HYDRO-DIVERSITY project will address this task by a unique set of experimental work that will be performed across several soil-stream interfaces located along an elevation gradient within the pre-alpine Oberer Seebach (OSB) catchment in Austria. Overall the HYDRO-DIVERSITY project is set out as an interdisciplinary approach involving the disciplines of hydrology, geography, soil science, chemistry and microbial ecology to understand the origin of biofilms in small streams. This understanding will contribute to gain deeper insights into ecosystem functioning of small streams and their contribution to CO2 evasion.