Aquatic biogeochemical models

We can conclude that the knowledge of these thermodynamic processes allows us to understand the quantitative parameters of interaction of various biogeochemical cycles in terrestrial and aquatic ecosystems. These parameters can be also used in different biogeochemical models. 

Describe the algorithm and conceptual scheme of the biogeochemical model for aquatic ecosystems. What are the areas of applications for such a model ... 

The chapter is structured as follows. The first section reviews descriptions of organic phosphorus components in biogeochemical models of aquatic systems. This is followed by a review of frequently used model formulations for important processes affecting organic phosphorus in lakes, rivers, sediments, marine systems and sewage treatment plants. The next section contains a brief review of how to embed organic phosphorus submodels into biogeochemical models of aquatic systems. Then we analyse which processes have been con-... 

Components of mechanistic biogeochemical models of aquatic systems are defined according to their function and not according to analytical procedures. To make model results comparable with measured data, it is important to link model components to analytically defined components. Due to the simplified representation of natural systems in mechanistic models and imperfect analytical procedures, this leads... 

Organic matter consists of many compounds and it is impossible to account for this diversity in biogeochemical models of aquatic systems. However, the average composition of organic matter can be described by a similar notation as that used to describe chemical compounds. In the following subsections, the most frequently used descriptions of the composition of organic material are briefly reviewed. 

Embedding Organic Phosphorus Models in Biogeochemical Models of Aquatic... 

Figure 3. General model of bio geo chemical cycles in the Earth s ecosystems. The left part is bio geochemical cycling in terrestrial ecosystems, the right part is aquatic ecosystems and the central part is connected with the atmosphere. The fine solid lines show the biogeochemical food webs (the Latin numbers I-XXI) and directed and reverse relationships between these...

Paces, T. (1994) Modeling the Hydrological and Biogeochemical Response of a Catchment Area to Anthropogenic Effects. In Chemistry of Aquatic Systems, Local and Global Perspectives, G. Bidoglio and W. Stumm, Eds., Kluwer, Dordrecht. 

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