Pieter Zuidema
@pieterzuidema.bsky.social
Tropical forest ecologist | Professor | Wageningen University 🇳🇱 | Climate change impacts on trees & forests | Tropical 🌳 rings | Dendrochronology | Timber tracing | Model-data integration
🎉Congratulations 🎓 Dr Sophie Zwartsenberg who defended her PhD thesis @w-u-r.bsky.social about climate & CO2 effects on trees in #tropicalforest
Sophie found that 100y of CO2 rise stimulated tree #photosynthesis, that #treerings are narower during hot & dry years, and more so in drier regions. 🌎🍁
Sophie found that 100y of CO2 rise stimulated tree #photosynthesis, that #treerings are narower during hot & dry years, and more so in drier regions. 🌎🍁
October 23, 2025 at 3:51 PM
🎉Congratulations 🎓 Dr Sophie Zwartsenberg who defended her PhD thesis @w-u-r.bsky.social about climate & CO2 effects on trees in #tropicalforest
Sophie found that 100y of CO2 rise stimulated tree #photosynthesis, that #treerings are narower during hot & dry years, and more so in drier regions. 🌎🍁
Sophie found that 100y of CO2 rise stimulated tree #photosynthesis, that #treerings are narower during hot & dry years, and more so in drier regions. 🌎🍁
Yesterday, Bo Zhou successfully defended his PhD thesis at @w-u-r.bsky.social on carbon & water dynamics in a montane forest in subtropical China. Bo studied tree growth rythms & transpiration fluxes.
🎉Congrats 🎓 Dr Bo!
▶️ Defense: wur.yuja.com/V/Watch?v=93...
📙Thesis: research.wur.nl/en/publicati...
🎉Congrats 🎓 Dr Bo!
▶️ Defense: wur.yuja.com/V/Watch?v=93...
📙Thesis: research.wur.nl/en/publicati...
September 18, 2025 at 7:43 AM
Yesterday, Bo Zhou successfully defended his PhD thesis at @w-u-r.bsky.social on carbon & water dynamics in a montane forest in subtropical China. Bo studied tree growth rythms & transpiration fluxes.
🎉Congrats 🎓 Dr Bo!
▶️ Defense: wur.yuja.com/V/Watch?v=93...
📙Thesis: research.wur.nl/en/publicati...
🎉Congrats 🎓 Dr Bo!
▶️ Defense: wur.yuja.com/V/Watch?v=93...
📙Thesis: research.wur.nl/en/publicati...
What does this mean for the future?
The past drought #resilience will very likely diminish. Stronger drought impacts in hotter & drier regions (see Fig) give a glimpse of aggravated drought responses in future. Also, droughts increase tree death, causing lasting carbon losses from forests.
The past drought #resilience will very likely diminish. Stronger drought impacts in hotter & drier regions (see Fig) give a glimpse of aggravated drought responses in future. Also, droughts increase tree death, causing lasting carbon losses from forests.
July 31, 2025 at 6:37 PM
What does this mean for the future?
The past drought #resilience will very likely diminish. Stronger drought impacts in hotter & drier regions (see Fig) give a glimpse of aggravated drought responses in future. Also, droughts increase tree death, causing lasting carbon losses from forests.
The past drought #resilience will very likely diminish. Stronger drought impacts in hotter & drier regions (see Fig) give a glimpse of aggravated drought responses in future. Also, droughts increase tree death, causing lasting carbon losses from forests.
What happened after the droughts? And during wet years?
Growth bounced back quickly after droughts. During the 1st post-drought year, pantropical average tree growth was similar to that of pre-drought year. Growth increase during wet years partially compensated for drought impacts.
(2/4)
Growth bounced back quickly after droughts. During the 1st post-drought year, pantropical average tree growth was similar to that of pre-drought year. Growth increase during wet years partially compensated for drought impacts.
(2/4)
July 31, 2025 at 6:37 PM
What happened after the droughts? And during wet years?
Growth bounced back quickly after droughts. During the 1st post-drought year, pantropical average tree growth was similar to that of pre-drought year. Growth increase during wet years partially compensated for drought impacts.
(2/4)
Growth bounced back quickly after droughts. During the 1st post-drought year, pantropical average tree growth was similar to that of pre-drought year. Growth increase during wet years partially compensated for drought impacts.
(2/4)
Happy to virtually present a keynote on #treerings in the tropics tomorrow at the WorldDendro conference.
Main message: now that potential & applications of tropical #dendrochronology have been amply shown, it s time to synthesize & scale up to pantropical studies
sites.google.com/view/african...
Main message: now that potential & applications of tropical #dendrochronology have been amply shown, it s time to synthesize & scale up to pantropical studies
sites.google.com/view/african...
July 28, 2025 at 5:17 PM
Happy to virtually present a keynote on #treerings in the tropics tomorrow at the WorldDendro conference.
Main message: now that potential & applications of tropical #dendrochronology have been amply shown, it s time to synthesize & scale up to pantropical studies
sites.google.com/view/african...
Main message: now that potential & applications of tropical #dendrochronology have been amply shown, it s time to synthesize & scale up to pantropical studies
sites.google.com/view/african...
New paper on tropical #timber #tracing! We tested the use of wood oxygen stable isotopes (δ18O ) for tracing. We produced #isoscapes for 5 major tropical timbers. These isoscapes alone had limited utility. Combinations with other techniques may help. #timtrace
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
June 11, 2025 at 4:16 PM
New paper on tropical #timber #tracing! We tested the use of wood oxygen stable isotopes (δ18O ) for tracing. We produced #isoscapes for 5 major tropical timbers. These isoscapes alone had limited utility. Combinations with other techniques may help. #timtrace
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Just returned from the #caatinga dry #forest in Ceara, Brazil where we study how trees deal with #drought.
PhD candidates Natali Caro & Gabriela Ushida equipped 🌳 with sensors & took wood samples for #dendrochronology. Impressive research infrastructure to understand & predict drought impacts.
PhD candidates Natali Caro & Gabriela Ushida equipped 🌳 with sensors & took wood samples for #dendrochronology. Impressive research infrastructure to understand & predict drought impacts.
February 21, 2025 at 7:07 PM
Just returned from the #caatinga dry #forest in Ceara, Brazil where we study how trees deal with #drought.
PhD candidates Natali Caro & Gabriela Ushida equipped 🌳 with sensors & took wood samples for #dendrochronology. Impressive research infrastructure to understand & predict drought impacts.
PhD candidates Natali Caro & Gabriela Ushida equipped 🌳 with sensors & took wood samples for #dendrochronology. Impressive research infrastructure to understand & predict drought impacts.
Also fascinated by how trees🌳 respond to climatic changes 🌦️? And by climate info stored in tree rings? Please submit abstract to our #Tree-Ring Session #EGU25
🗓️ Deadline Jan 15
📍 EGU Vienna Apr 27 May 2
More info 👉 meetingorganizer.copernicus.org/EGU25/sessio...
#dendrochronology #forest
🗓️ Deadline Jan 15
📍 EGU Vienna Apr 27 May 2
More info 👉 meetingorganizer.copernicus.org/EGU25/sessio...
#dendrochronology #forest
December 20, 2024 at 4:56 PM
Also fascinated by how trees🌳 respond to climatic changes 🌦️? And by climate info stored in tree rings? Please submit abstract to our #Tree-Ring Session #EGU25
🗓️ Deadline Jan 15
📍 EGU Vienna Apr 27 May 2
More info 👉 meetingorganizer.copernicus.org/EGU25/sessio...
#dendrochronology #forest
🗓️ Deadline Jan 15
📍 EGU Vienna Apr 27 May 2
More info 👉 meetingorganizer.copernicus.org/EGU25/sessio...
#dendrochronology #forest