Biology Colloquium | Anirban Guha
October 8, 2020 @ 1:30 pm - 2:30 pm
- This event has passed.
Title: Can terrestrial photosynthesis keep place with global warming? Let’s take a pan-vegetation look!
Speaker: Dr. Anirban Guha,
University of Florida
Abstract: With growing awareness towards ongoing and future global temperature rise, perhaps, the two emerging catchphrases are ‘carbon sequestration’ and ‘photosynthetic acclimation’. All major forest ecosystems are already sensing and responding to climate change effects. There are now enough empirical evidence to show how global warming is altering the life-cycle processes of terrestrial vegetation. Forest biomes are large store-houses of carbon and play critical roles in balancing the carbon cycle. However, we are evidencing an unprecedented rise in atmospheric CO2 concentration (~410 ppm) which is driving the global temperature shifts. While there are contradictory opinions on how much of the build-up atmospheric CO2 could be sequestered by land vegetation, there is an overarching interest to understand if photosynthetic processes could adjust and perform optimally in a warmer world. Different apparatus, players, and processes, involved in photosynthetic physiology are highly temperature-sensitive and are prone to lose their integrity and functions when the optimal temperature has been surpassed. Therefore, acclimation is the key to sustain and function. In this talk, I will share some of my research works on photosynthetic thermal resilience and acclimation capacity of vegetation across tropical, temperate, and boreal biomes. This pan-vegetation discourse aims to drive curiosity among students and other researchers towards some of the esoteric facets of global change biology of macroflora.