Eliška Rejmánková  is specialized in ecosystem and community ecology with particular attention to aquatic and wetland environments. Her research facilitates quantification and improved understanding of biogeochemical processes in sensitive lake and marsh ecosystems that are being exposed to increasing nutrient inputs through human activities. Increased nutrient inputs may lead to changes affecting ecosystem processes such as nitrogen (N) and phosphorus (P) uptake and recycling, N2-fixation, and mineralization.  Overall the research is conducted in a wider context of aquatic and wetland ecosystem management and conservation. Her study sites have included European, Central and South American aquatic ecosystems.