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DTSTAMP:20260921T221601Z
LAST-MODIFIED:20170718T161842Z
DTSTART:20170719T200000Z
DTEND:20170719T210000Z
UID:event1777@bu.edu
URL:http://physics.bu.edu/internal/events/show/1777
SUMMARY:The complex interplay of habitat filtering\, neutral assembly and e
	cological interactions in the determination of bacterial community-level fu
	nction. 
DESCRIPTION:Featuring Alberto Pascual-García \, Department of Life Science
	s\, Silwood Park\, Imperial College London \n\nPart of the Biophysics Semin
	ars.\n\nUnderstanding the determinants shaping bacterial community-level fu
	nction is one of the most important challenges in microbial research. There
	 is still no consensus on the relative importance of functional redundancy 
	and complementarity at the species level\, how important rare species are t
	o predict community function\, or which are the most important ecological p
	rocesses shaping microbial assembly\, among other questions. Here\, I prese
	nt a large-scale analysis of communities sampled from tree-holes from diffe
	rent locations in the UK\, aiming to shed light on some of these questions.
	 We found one of the strongest signals of a distance-decay pattern for the 
	similarity of the microbial communities reported up to date. Interestingly\
	, it is possible to split the communities into four groups according with t
	heir similarity and\, despite of the strong signal of habitat filtering: i)
	 three of these groups are compatible with a neutral assemblage hypothesis 
	and ii) building networks through the analysis of the taxa abundances corre
	lations\,  we consistently find the same cohesive clusters of taxa tightly 
	packed through positive correlations in all four groups of samples. Moreove
	r\, the relative abundance of these cohesive clusters seem to determine the
	 ability of other taxa to be present in the community. I will finally prese
	nt ongoing results showing how we integrate the information obtained to pre
	dict community function through structural equation modelling\, and I will 
	discuss meeting points with bottom-up modelling\, such as flux balance anal
	ysis.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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