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SUMMARY:Linking the ecology and evolution of the savanna biome - Dr Caroli
 ne Lehmann (University of Edinburgh)
DTSTART;VALUE=DATE-TIME:20160129T163000Z
DTEND;VALUE=DATE-TIME:20160129T183000Z
UID:https://talks.ox.ac.uk/talks/id/4cb014ea-f7fa-4158-94c7-b2f427c79614/
DESCRIPTION:OCTF seminar followed by drinks - all welcome\n\nEcologists ha
 ve long sought to elucidate the controls on savanna vegetation structure a
 nd the limits of the biome relative to fire and climate. In seeking biome 
 wide relationships explaining woody biomass across Australian\, African an
 d South American savannas\, we found that the directional relationships am
 ong rainfall\, fire and vegetation were universal. That is\, increasing ra
 infall drives increases in both fire and tree biomass\, while fire reduces
  tree biomass. However\, among regions\, the magnitude of these effects va
 ried so substantially that a single model cannot represent global patterns
  of savanna woody biomass or the limits of the biome. The legacy of evolut
 ionary and environmental differences\, underpinned by regional differences
  in plant lineages (of both trees and grasses) and their plant traits\, ha
 ve cascading impacts that drives regional variation in the contemporary ex
 tent and dynamic of tropical savannas. These same differences will determi
 ne the regional response of vegetation to future climates\, with substanti
 al implications for climate induced changes in biome extent and global car
 bon stocks. Importantly\, this work demonstrates how conservatism of plant
  traits within lineages scales to impact global ecology and also calls int
 o question how we define biomes.  \n\nCaroline Lehmann works on improving 
 our understanding of the ecology and evolution of tropical ecosystems\, sp
 ecifically savannas. She does this via linking remotely sensed data\, expe
 rimental data\, meta-analyses and field observations. Caroline currently w
 orks on projects aimed at improving our understanding of savanna vegetatio
 n dynamics and extent related to climate and fire\, the evolution and asse
 mbly of C4 grasslands\, improving the definition of tropical biomes\, and\
 , plant-fire coevolution.\n\n\nSpeakers:\nDr Caroline Lehmann (University 
 of Edinburgh)
LOCATION:Dyson Perrins Building (Herbertson Room)\, off South Parks Road O
 X1 3QY
TZID:Europe/London
URL:https://talks.ox.ac.uk/talks/id/4cb014ea-f7fa-4158-94c7-b2f427c79614/
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DESCRIPTION:Talk:Linking the ecology and evolution of the savanna biome - 
 Dr Caroline Lehmann (University of Edinburgh)
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