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SUMMARY:Contributed Talk: Dynamics of algae-bacteria interactions in artif
 icial plankton communities - Marco Mauri (Friedrich-Schiller-Universität 
 Jena)
DTSTART:20221013T091000Z
DTEND:20221013T093000Z
UID:TALK179378@talks.cam.ac.uk
DESCRIPTION:Dynamics of algae-bacteria interactions in artificial plankton
  communities\nMarine phytoplankton is composed of unicellular algae and th
 eir associated bacteria. These algal communities are highly variable in sp
 ecies composition\, but their patterns tend to recur seasonally. This dive
 rsity suggests the existence of ecological niches for the associated bacte
 ria.\nTo clarify the role of the bacterial community on the phytoplankton\
 , we co-cultured several bacterial species with microalgae. We found that 
 the inhibitory or stimulatory function of a particular bacterium depends o
 n both the co-cultured partner and on the different growth phases of the a
 lgal culture. Using a generalized Lotka-Volterra model\, we were able to p
 redict the behaviour of an artificial community composed of C. radiatus di
 atoms and four bacterial species\, and demonstrate the importance of pairw
 ise bacteria-algae interactions.&nbsp\;\nOur study supports the idea that 
 interactions between bacteria and algae are highly species-specific and de
 pend on algal fitness\, bacterial metabolism\, and community composition. 
 This species specificity may underlie the high complexity of the multi-spe
 cies plankton communities observed in nature.\nYun Deng1\, Marco Mauri1\,3
 \, Marine Vallet2\, Mona Staudinger1\, Rosalind J. Allen1\,3\, Georg Pohne
 rt1\,2 - 1 Friedrich Schiller University Jena\; 2 Max Planck Institute for
  Chemical Ecology Jena\; 3 University of Edinburgh
LOCATION:Seminar Room 1\, Newton Institute
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