Water plants are well adapted to the aquatic environment due to the high plasticity of the
photosynthetic apparatus of floating and submerged leaves. A strong decrease or complete
disappearance of Nymphaea alba L. populations and their simultaneous replacement by
Nuphar lutea L. Smith populations were observed for the last decades in freshwater
ecosystems previously described as typical habitats of both species. However, there is no
information on which environmental factors and/or interspecies differences between Nu …