Despite implementing vast rehabilitation measures to improve the state of Lake Bled in the past, it still
faces many pressures from the surrounding area. In the master’s thesis, we analysed and modelled the
sources of nutrient loads from the contributing areas and direct loads to the lake. For this purpose, we
set up two models: the model of nutrient leaching from the catchment in the MapShed tool and the model
of the state of the lake in the AQUASIM program. We assumed that phosphorus is the only limiting
factor affecting lake quality. The influence of fish feeding on the state of the lake ecosystem was
modelled and assessed along with the rest of the load from the catchment. Based on calibrated and
validated models, we found that the Mišca tributary contributes the most to the phosphorous load and
that the internal load of the lake has a significant influence on the algae bloom. In the conclusions, we
proposed several measures for improving the state of Lake Bled
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