title: [An experimental study and a mathematical model of interactions in mixed culture of invertebrates and algae in the "producer-consumer" aquatic biotic cycle].
abstract: An experimental investigation was carried out, and a mathematical model of interaction between invertebrates (infusoria Paramecium caudatum and rotifera Brachionus plicatilis) and algae (Chlorella vulgaris and Scenedesmus quadricauda) in the "producer-consumer" aquatic biotic cycle with spatially divided links was constructed. The model describes the dynamics of a mixed culture of infusoria and rotifera in the "consumer" link, when they consume a mixed culture of algae coming from the "producer" link. A negative influence of products of algae Scenedesmus metabolism upon the reproduction of infusoria P. caudatum was revealed. Taking this into account, a qualitative coincidence of the results of mathematical modeling with experimental data was obtained. It was shown that the co-existence of mixed algae culture in the "producer" link with invertebrates in the "consumer" link in the "producer-consumer" aquatic biotic cycle is impossible because of the displacement of infusoria P. caudatum by rotifera Brachionus plicatilis.
authors.forename: T I
authors.initials: TI
authors.lastname: Pis'man
authors.forename: O N
authors.initials: ON
authors.lastname: Bogdanova
mesh_terms: D000818:Animals; D019149:Bioreactors; D048408:Chlorella vulgaris / Q000502:physiology*; D018920:Coculture Techniques; D018504:Ecological Systems, Closed; D020387:Food Chain; D008954:Models, Biological; D009584:Nitrogen / Q000378:metabolism; D048488:Paramecium caudatum / Q000502:physiology*; D012403:Rotifera / Q000502:physiology*; D044444:Scenedesmus / Q000378:metabolism / Q000502:physiology*
chemical_list: D009584:Nitrogen