Macrophytes play an important role in aquatic ecosystems. Their temporal and spatial distribution is governed by various natural and anthropogenic pressures and disturbances. The aim of the thesis is to study the effect ...

Phytoplankton is the most important primary producer in the aquatic ecosystems and account for half of all photosynthetic activity on earth, thus creating the base for most aquatic food chains. It also plays key role in ...

About 90% of the organic matter in most aquatic systems is dissolved organic matter (DOM) and the rest forms the pool of particulate organic matter. DOM plays a significant role in the carbon and energy cycle of water ...

Phyto- and zooplankton, the targets of the study, are the most important links of a water body’s food web. The stability of water body’s ecosystem is largely influenced by the interactions of phyto- and zooplankton. These ...

Pikeperch, Sander lucioperca (L.), is a pelagic predator, which plays a key role in many inland water bodies of the temperate zone by structuring populations at lower trophic levels (Frankiewicz et al., 1997; Dörner et ...

An understanding of the factors that drive the water quality of large lakes is critical to the protection of such waterbodies. In the present study, the contributions made by riverine nutrient loading, sediment resuspension ...

The dissertation contributes to the improvement of large lake monitoring, demonstrating that besides following the class boundaries of ecological status established by law, reliable status estimates of such lakes require ...

Human activities and climate change have become the most consequential threats to freshwater ecosystems and their inhabitants, especially fish. The response of the fish population to their environment is not always ...

Fishes provide food and livelihood for hundreds of millions of people around the world and currently fish consumption is higher than ever before. As a consequence, the threats of over-exploitation, illegal fishing and fish ...