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    Competition between links in "producers-consumer" trophic chains in an aquatic closed system with spatially separated components / T. I. Pisman, N. S. Pechurkin, L. A. Somova // Advances in Space Research. - 2001. - Vol. 27, Is. 9. - P1599-1603, DOI 10.1016/S0273-1177(01)00255-1 . - ISSN 0273-1177
Кл.слова (ненормированные):
Algae -- Aquifers -- Biodiversity -- Metabolism -- Nitrogen -- Protozoa -- Aquatic closed systems -- Spatially separated components -- Space research -- aquatic ecosystem -- competition -- grazing -- primary production -- fresh water -- nitrogen -- animal -- article -- Chlorella -- food chain -- green alga -- metabolism -- microclimate -- Paramecium -- Rotifera -- Algae, Green -- Animals -- Chlorella -- Ecological Systems, Closed -- Food Chain -- Fresh Water -- Nitrogen -- Paramecium -- Rotifera
Аннотация: The work analyzes functioning of a "producer-consumer" closed aquatic system with spatially separated links, where each component consisted of two species. Producers in the system were the microalgae of Chlorella vulgaris and Scenedesmus sp., consumers - Paramecium caudatum infusoria and Brachionus sp. rotifers. In the experiment the competing predators were consuming on a mixed culture of algae, and the competition of algae was studied under nitrogen limitation. Under these conditions competitiveness of Scenedemus was higher than that of Chlorella vulgaris. Metabolism products of Scenedesmus algae have been found to have negative effect on reproduction of Paramecium caudatum protozoa. Predator population dynamics in the "consumer" link demonstrated that the rotifers that consume two algal species are more competitive compared to protozoa feeding on chlorella only. В© 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pisman, T.I.; Pechurkin, N.S.; Somova, L.A.

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