Urban catchments - Management of water resources in urban areas
High population densities force cities and natural spaces closer together. As a comsnequence they need to be operated in a way that suits both purposes. The urban development must only impact the natural spaces to an acceptable level. Otherwise the local population would not anymore profit from the spaces as well as possible. In the model region around Chao-Hu Lake the interdependence between nature and cities is particularly fragile. This region is one of the fastest growing regions in terms of population in China. The City of Chao-Hu takes its drinking water from the lake.
collaboration with Tongji University, Institute of Chinese Academy of Sciences (CAS) and Environmental Academy Umweltakademie (CRAES)
funded by
duration 2015-2018
Selective Withdrawal - Große Dhünn Talsperre
Changing management strategy of reservoirs results in changes of the the ecosystems in the lake and the underlying water course. This project aims at two goals: (A) consequences of changed management options for the physical straucture and the ecological functionality of the reservoir and (B) the integration of a selective withdrawal facility into the operational plan of the reservoir.
collaboration with Wupperverband
funded by state of Nordrhein-Westfalen
duration 2014-2017
Quantifying the carbon dioxide content in the deep water of Guadiana pit (Herrerias mine, Spain)
From sampling, it is known that Guadiana pit lake contains a huge amount of dissolved gases in the deep water. The gas mainly consists of carbon dioxide. This project will quantify the amount of gas. It will draw conclusions about the safety / danger deriving from this situation and propose (if possible) demonstrate, if / that a removal of gases is possible with self-driven gas fountains through pipes similar to installation in Lakes Nyos and Monoun.
collaboration with Institute for Geology and Mining (Spain) IGME - Dr. Javier Sanchez Espana and University of the Basque Country - Prof. Iñaki Yusta
duration 2013-2015
Inverstigation the consequences of the forced recirculation on the ecological situation of Schliersee and risk analysis for abandoning the system
Der Bau einer Ringkanalisation in den 1960er Jahren führte zur Reduktion der Stoffeinträge in den Schliersee. Entgegen den Erwartungen verbesserten sich der trophische Zustand und die Sauerstoffverhältnisse des Sees jedoch nicht. Dafür wurden auch die unregelmäßige Durchmischung des Sees (Tendenz zur Meromixis auf Grund windgeschützter Lage) und die unzureichende Versorgung des Tiefenwassers mit Sauerstoff verantwortlich gemacht. Im Jahr 1982 wurde daher eine Zwangszirkulation in Betrieb ge¬nommen, um die Durchmi¬schung des Sees zu unterstützen. Trotz dieser beiden Ma߬nahmen entwickeln sich im See nach wie vor vergleichsweise hohe Biomassen, insbesondere planktische Cyanobakterien der Art Limnothrix redekei. Aus den Ergebnissen sollen Handlungs¬empfehlungen für die zukünftige Betriebsweise der Zwangszirkula¬tion abgeleitet werden.
collaboration with Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB) in Berlin - Dr. Michael Hupfer
funded by Wasserwirtschaftsamt Rosenheim
duration 2012-2014
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