Fading out of the trophic cascade at the base of the microbial food web caused by changes in the grazing community in mesocosm experiments

• Autorzy: Jasser I. , Kostrzewska-Szlakowska I.
• Języki publikacji: EN

Abstrakty

EN

Biomanipulation of consumer populations can have strong top-down impacts on the composition and biomass of lower trophic levels. In this paper, we assess how changes in crustaceans' biomass influence classical grazing and the microbial food web in an oligo-mesohumic, low-pH lake (Mazurian Lake District, Poland). Removal of mesozooplankton from the experimental mesocosms created a gradient of crustacean biomass resulting in the biomass increase of rotifers, phytoplankton and protozooplankton, while autotrophic eukaryotic picoplankton (eu-APP) and bacteria were not affected. The strongest modifications concerned the rotifer biomass and phytoplankton community structure. Our results imply that the trophic cascade generated in the experiment did not extend to bacteria and eu-APP.

Słowa kluczowe

EN

trophic cascade; mesocosms; microbial food web; low-pH lake

• Wydawca: Institute of Oceanography University of Gdańsk
• Czasopismo: Oceanological and Hydrobiological Studies
• Rocznik: 2012
• Tom: Vol. 41, No. 1
• Strony: 1--11
• Opis fizyczny: Bibliogr. 34 poz., tab., wykr.

Twórcy

autor

Jasser I.

autor

Kostrzewska-Szlakowska I.

• Microbial Ecology Department, Institute of Botany, University of Warsaw, Warsaw, Poland,

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