Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2004

Ключевые слова: competition; metabolite interaction; principle of competitive exclusion, Competition, Metabolite interaction, Principle of competitive exclusion, alga, competition (ecology), invertebrate, numerical model, trophic structure, algae, Brachionus, Brachionus plicatilis, Chlorella vulgaris, Ciliophora, Invertebrata, Paramecium, Paramecium caudatum, Rotifera, Scenedesmus, Scenedesmus quadricauda

Аннотация: This paper presents a mathematical model of interactions between two herbivorous invertebrates (ciliate Paramecium caudatum and rotifer Brachionus plicatilis) and two planktonic algae (Chlorella vulgaris and Scenedesmus quadricauda) spatially segregated in two compartments of a chemostat - type experimental microcosm system. The model mimics a "producer-consumer" aquatic biotic cycle, describing the dynamics of the mixed culture of ciliates and rotifers, as "consumer" compartment, feeding on the mixed algal culture, as "producer" compartment, under N-limiting conditions. We experimentally found that metabolites of the alga Scenedesmus produce an adverse effect on the reproduction of ciliate Paramecium. Taking this effect into account improved the behavior of the model, the results of which came into qualitative agreement with the experimental results. Both our experimental and modeling approaches demonstrated that, even in conditions of a spatially - segregated "producer-consumer" biotic cycle, species coexistence is impossible either in the mixed algal culture or in the mixed invertebrate culture. Scenedesmus excluded Chlorella, whereas Brachionus excluded Paramecium.

Журнал: AQUATIC ECOLOGY

Выпуск журнала: Vol. 38, Is. 3

Номера страниц: 415-423

ISSN журнала: 13862588

Место издания: DORDRECHT

Издатель: KLUWER ACADEMIC PUBL

• Pisman T.I. (KRASNOYARSK STATE UNIV)
• Bogdanova O.N. (KRASNOYARSK STATE UNIV)

• Web of Science Core Collection
• Scopus