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FP7

Final Report - COMPLEX (Community dynamics and phenotypic changes of limnic bacteria during experimental manipulation of bottom-up and top-down factors)

Project ID: 237535
Funded under: FP7-PEOPLE

Abstract

Bacteria in freshwaters are key players in the degradation of organic carbon. Their important functional role is related to the specific growth features of different genotypes within mixed assemblages. Limitation by substrates and nutrients (bottom-up factors) and high predation by bacterivorous protists (top-down factors) together shape the composition of microbial assemblages. Bacterial species have developed strategies that are either aimed at maximising their competitive abilities for bottom-up limitations or at resisting protistan top-down control. Both specialisations conceivably also represent trade-offs, either of metabolic versatility or of growth efficiency.

The work provides novel insight into the specific metabolic differences of freshwater bacteria that are most successful at either top-down or bottom-up selection. The report features pie charts, diagrams, and images.

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