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SUMMARY:EESS Student talk on "Invasive palms do not benefit from warming c
 ompared to native trees"
DTSTART:20250401T124500
DTEND:20250401T131500
DTSTAMP:20260528T175222Z
UID:0b2686f54be9bef5bac674d8e271a2cefc12eb5d424dd3e7b24c2152
CATEGORIES:Conferences - Seminars
DESCRIPTION:Thibaut JUILLARD​​​​​​​\, PhD Student\, PERL\nA
 bstract:\nOne of the biggest threats to biodiversity globally is the sprea
 d of non-native species. In Europe\, plants are responsible for half of al
 l invasions\, which can lead to changes in species composition and alter e
 cosystem services such as nutrient cycling\, primary production\, and natu
 ral hazard prevention. Invasive plants are suspected to benefit from globa
 l warming as they could acclimate their photosynthesis and respiration mor
 e extensively than native plants with warming. Such acclimation may lead t
 o a higher carbon uptake and an overall competitive advantage. Yet\, the p
 hysiology of invasive plant species and their capacity to acclimate to tem
 perature is poorly understood\, and most existing studies are observationa
 l.\nTo better understand the physiology of invasive plants in comparison t
 o native plants\, we conducted an experimental study in five diFerent clim
 ates across Europe to expose an invasive palm and two native tree species 
 to a wide range of air temperatures\, and we measured how photosynthesis a
 nd respiration acclimated. In addition\, we modeled the yearly carbon upta
 ke of the three species to measure how acclimation of photosynthesis and r
 espiration contributes to the carbon budget. Contrary to our expectations\
 , we observed that the invasive palm was not capable of acclimating its ph
 otosynthesis and respiration more than the native species. Moreover\, whil
 e a mild increase in temperature was favorable for all species\, acclimati
 on was not suFicient to prevent carbon losses at high temperatures. Our fi
 ndings show that not all invasive species benefit from warming and suggest
  that there are alternative mechanisms promoting invasion.\n\nBiography:\n
 Thibaut Juillard is a Ph.D. student in the Plant Ecology Research Lab (PER
 L) with Charlotte Grossiord. After completing his studies in Environmental
  Sciences and Engineering at EPFL\, he joined PERL and began studying how 
 tree physiology responds to environmental changes. His current research fo
 cuses on how climate change can favor invasive plants\, using as a focal s
 pecies the windmill palm\, a highly invasive species in forests of the Sou
 thern Alps.
LOCATION:GC B1 10 https://plan.epfl.ch/?room==GC%20B1%2010 https://epfl.zo
 om.us/j/69011077410
STATUS:CONFIRMED
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