In recent years, mortality of common carp increased in some Czech and Moravian ponds during spring months.

As the most of human-produces contaminants end in the surface waters, these ecosystems represent one of the most endangered part of the environment.

Antibiotics are an important group of pharmaceuticals, which are used in the treatment and prevention of bacterial infections.

Freshwater biodiversity is globally threatened by various factors while severe weather events like long-term droughts may be substantially devastating.