Applying multi-objective decision making methods to water quality management tasks optimal compromise solutions between ecological and man-made management operations will be obtained. The DSS REHSPROX was used to compute Pareto-optimal solutions of the DO balance of the Upper Spree River as a part of the River Elbe basin. ...

Missing data in environmental time series lead to some general problems in many fields of environmental research and simulation. They cause not only difficulties in process identification and parameter estimation but also misinterpretations of spatial and temporal variations of environmental indicators. Mostly, time ...

Analysis, control and management of ecosystems are complex tasks which have to cover broad ranges of operating environmental states and decision making. Current approaches to ecosystems modelling and simulation are mostly based on information theory, thermodynamics, topology, or balances of biological and chemical ...

Modelling theeutrophicationprocess of shallow riverine lakes the nutrient uptake by plants plays an important role. Especially, phosphorus remobilidsation from sediment leads to strong algal blooms in autumn. Therefore, this process must be considered by mathematical models explicitly. For the river system of the Untere ...

Managing freshwater ecosystems is quite challenging because of the complexity of these systems. Their management requires a good understanding of the components and their interrelationships. Physical, chemical and biological variables are recorded across time and serve as indicators, giving information concerning the ...

Ecosystems are described as open systems for energy, matter and information. They are characterised by nonequilibrium processes and multiple stationary states. A general system description used in state space theory, dynamical system theory and automata theory is given by non-linear and instationary multiple operators F ...

The management of reservoirs is very complex, and it is usually involved with multi-users. Conflicts usually arise between multi-users due to their competing for water use. Game theoretic models and notions can be applied to model such problems and find solutions. In this paper, water quality management of Danjiangkou ...

In this paper results of a water quality modelling framework for riverine shallow lakes are presented. Based on investigations of interrelations between variables of freshwater quality by advanced time series analysis methods a process model for phosphorus remobilisation from lake sediments was developed. For predicting ...

The control of water quality of freshwater ecosystems is inherently multiobjective. Mostly, scenario analyses based on simulation runs of one or more models are carried out. Some applications are known where a two stage simulation-optimisation combination help to solve water quality management problems. To control the ...

The article attends the development of a web based environmental information system (EIS) useful for public environmental communication in practice. The motive of this project is to transpose the laws and guidelines for establishing a public access on environmental issues by building an internet portal for environment ...