Ref ID : 676
Agnes Ruttner-Kolisko; The abundance and distribution of Filinia terminalis in various types of lakes as related to temperature, oxygen, and food. Hydrobiologia 73:169-175, 1980
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Although morphologically variable, Filinia terminalis constitutes a well defined ecological unit living below 12-15 degrees C, and forming large maxima up to several thousand ind./l at oxygen content <2 mg/l. Field investigations and laboratory experiments indicate facultative anaerobiosis and food sources of chemosynthesizing or plankton decomposing bacteria. On the grounds of these physiological requirements a hypothetical schema is presented attempting to predict the occurrence of the two species, F. terminalis and F. longiseta in oligotrophic, eutrophic, meromicitic, and polymictic, shallow lakes.