COMPLEX

Community Dynamics and Phenotypic Changes of Limnic Bacteria During Experimental Manipulation of Bottom-up and Top-down Factors

Coordinatore	UNIVERSITAET ZUERICH    more  Organization address address: Raemistrasse 71 city: ZURICH postcode: 8006 contact info Titolo: Prof. Nome: Jakob Cognome: Pernthaler Email: send email Telefono: -7161213 Fax: -7161228
Nazionalità Coordinatore	Switzerland [CH]
Totale costo	143˙006 €
EC contributo	143˙006 €
Programma	FP7-PEOPLE Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	FP7-PEOPLE-IEF-2008
Funding Scheme	MC-IEF
Anno di inizio	2009
Periodo (anno-mese-giorno)	2009-07-01   -   2010-10-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	UNIVERSITAET ZUERICH  Organization address address: Raemistrasse 71 city: ZURICH postcode: 8006 contact info Titolo: Prof. Nome: Jakob Cognome: Pernthaler Email: send email Telefono: -7161213 Fax: -7161228	CH (ZURICH)	coordinator	143˙006.45

Mappa

 Word cloud

Esplora la "nuvola delle parole (Word Cloud) per avere un'idea di massima del progetto.

 Obiettivo del progetto (Objective)

'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 maximizing their competitive abilities for bottom-up limitations or at resisting protistan top-down control. Both specializations conceivably also represent trade-offs, either of metabolic versatility or of growth efficiency. We propose studying the effects of different types of growth limitations (carbon and phosphorus) on experimental assemblages of freshwater bacteria in the presence and absence of predation. Particular focus will be put on the relationship between the diversity and the metabolic function of the bacterial communities. Representatives of key populations will be isolated and tested for physiological versatility, growth efficiency and sensitivity to chemical cues (kairomons) by the predator. The growth of isolates and their response to predation will also be determined at close to natural conditions. The proposed work will provide novel insight into the specific metabolic differences of freshwater bacteria that are most successful at either top-down or bottom-up selection. It will also produce new physiologically well characterized model strains to study chemical interactions between bacteria and predators. The project will combine the research proficiency of the applicant with the ample facilities and the expertise available at the host institution. The candidate will benefit from a research environment that offers possibilities for fruitful collaborations. Moreover, it will be advantageous for his envisaged career to gain teaching experience in a university environment.'