Global change effects in river ecosystems (Glance)
For the projection of changes in the species communities’ knowledge of preferred discharge and flow conditions is required
GLANCE is a four-year (2014-2018) research project conducted at the
Global change is expected to impact freshwater ecosystems severely, e.g. by prolonged periods of drought, an increasing number of floods, or reduced supply of good quality freshwater. It is thought that streams and rivers are particularly vulnerable to global change and that species inhabiting stream ecosystems are among the most vulnerable species because of the highly complex interactions between the hydrosphere and biosphere. But until now, a rather qualitative understanding of processes prevails and we do not understand how these changes will overall affect the function of rivers. GLANCE will target these research gaps from various sides.
Three different ecoregions in Germany act as model catchments for analysis of recent and modelling of future flow conditions and ecosystem stability
In a first step, the ecological requirements of macro invertebrates will be statistically evaluated based on available data which are extended by field sampling in three German catchments (). Three linked hydrological and hydraulic model systems will be developed in the three catchments. The results of the simulations are hydrologic and hydraulic parameters of recent and future conditions. These findings, resulting from modelling, sampling and data analyses will be integrated in forecast tools to model the impacts of discharge changes on macro invertebrates. The project eventually aims for gathering data and carrying out comparative data analyses on a European or global level.
Research results can improve water management
It is expected that the findings will, in the long run, contribute to a more effective allocation of funds for river management, e.g. through the design of suitable monitoring schemes, or through improved predictions of success of river rehabilitation measures. Through the agreed cooperation with theand the , the project seeks a transfer of results to operational water management.
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