The specialized book "Storage Effects of Wetland Plant Species" by Dörte Lehsten offers a comprehensive analysis of the hydrological regimes of small field pools in the Pleistocene landscape. These habitats are crucial for the biodiversity of wetland species in intensively managed agricultural areas. The study examines over a period of 50 years how climatic changes, particularly rising temperatures, affect the hydrological properties of these habitats. By developing a method to define plant functional groups (PFG), the likelihood of the occurrence of these groups in different hydrological regimes is analyzed. The results demonstrate how human interventions and climatic factors influence the habitat quality of wetlands and allow predictions about future changes in the composition of plant functional types due to climate change.