Phytoplankton and zooplankton modeling in the chahnimeh man-made reservoir by means of issadm

Abstract

The increase of phytoplankton and zooplankton in the lakes and reservoirs that supply water to downstream regions is an important environmental issue. In this paper, concentrations of phytoplankton and zooplankton in Chahnimeh reservoir are predicted using an Integrated Seasonal Separate Advection- Diffusion Model (ISSADM). Chahnimeh reservoir is a seminatural deep hole that is stagnant in some part of the reservoir for most of the year. ISSADM is a three-dimensional numerical model based on a finitevolume solution that was developed to predict water quality in lakes and reservoirs affected by seasonal rivers. The model is capable of simulating water-quality parameters, as well as phytoplankton and zooplankton concentrations. To verify the model, field measurements and experiments conducted during a one-year period were compared with model results, demonstrating good agreement. The model is appropriate for predicting phytoplankton and zooplankton concentrations as well as eutrophication processes in similar, seasonal, aquatic environments. © 2013, ALÖKI Kft., Budapest, Hungary.