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SUMMARY:Amazon forest responses to drought: scaling from individuals to ec
 osystems - Dr Scott Saleska (University of Arizona)
DTSTART;VALUE=DATE-TIME:20191108T161500Z
DTEND;VALUE=DATE-TIME:20191108T183000Z
UID:https://talks.ox.ac.uk/talks/id/e4c86a72-e71a-438c-9c8a-6059affdb191/
DESCRIPTION:OCTF seminar followed by drinks - all welcome\n\nScaling from 
 individuals or species to ecosystems is a fundamental challenge of modern 
 ecology and understanding tropical forest response to drought is a key cha
 llenge of predicting responses to global climate change. Scott will synthe
 size his developing understanding of these twin challenges by examining in
 dividual and ecosystem responses to the 2015 El Nino drought at two sites 
 in the central Amazon of Brazil\, near Manaus and Santarem\, which span a 
 precipitation gradient from moderate (Manaus) to long (Santarem) dry seaso
 ns. He will focus on how ecosystem water and carbon cycling\, measured by 
 eddy flux towers\, emerges from individual trait-based responses\, includi
 ng photosynthetic responses of individual leaves\, and water cycle respons
 es in terms of stomal conductance and hydraulic xylem embolism resistance.
  Contrasting results were found to drought along the precipitation gradien
 t: the highly seasonal forest responded strongly in terms of ecosystem wat
 er and carbon fluxes\, with contrasting precipitation regimes (at seasonal
  and interannual timescales) apparently selecting for assemblies of traits
  and taxa manifest at the community level. These results suggest that we m
 ay be able to use community trait compositions\, as selected by past clima
 te conditions\, to help predict ecosystem responses to future climate chan
 ge. \n\nDr Scott Saleska investigates questions related to how the structu
 re and function of terrestrial vegetation and microbial communities regula
 tes large-scale biogeochemical processes. As a global change ecologist\, h
 e focuses in particular upon how ecological communities regulate land surf
 ace interactions with the atmosphere and with climate\, from local to glob
 al scales. These topics collectively address one of the largest uncertaint
 ies in predicting the future of climate on earth\, the response of living 
 communities to climate change. Scott is a Professor of Ecology and Evoluti
 onary Biology at the University of Arizona\, where he is Agnese Nelms Haur
 y Faculty Fellow in Environment and Social Justice\, and an elected fellow
  of the Ecological Society of America.\n\nSpeakers:\nDr Scott Saleska (Uni
 versity of Arizona)
LOCATION:Dyson Perrins Building (Herbertson Room\, ground floor)\, off Sou
 th Parks Road OX1 3QY
TZID:Europe/London
URL:https://talks.ox.ac.uk/talks/id/e4c86a72-e71a-438c-9c8a-6059affdb191/
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DESCRIPTION:Talk:Amazon forest responses to drought: scaling from individu
 als to ecosystems - Dr Scott Saleska (University of Arizona)
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