Table 1: Parameter spaces for oligotraphentic, mesotraphentic, and eutraphentic functional types. Parameters are marked as bold if they are different for the functional types. The spaces were selected based on reference species from the groups. Reference species were Chara aspera for oligotraphentic species, Myriophyllum spicatum and Potamogeton perfoliatusfor mesotraphentic species, Potamogeton pectinatus, Elodea nuttallii , and Najas intermedia for eutraphentic species.