Greg Quetin
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grquetin.bsky.social
Greg Quetin
@grquetin.bsky.social
3.3K followers 1.2K following 97 posts
Scientist | Engineer | Cargo Bike Enthusiast. Romantic about the indelible nature of cities full of people living in every way imaginable. Day job - climate change, and the trees of it.
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grquetin.bsky.social
Both strategies predicted broad decreases in leaf area in our model, while most climate models increased leaf area index (a per area leaf area metric) in the Coupled Model Intercomparison Project Phase 6 (CMIP6). Something to reconcile with plenty of differences between all models.
Three plots of maps showing mostly brown negative leaf area change values for Max Carbon Gain and Stress avoidance, and mostly green positive leaf area index change for the mean of CMIP6 models. Final subplot shows a distribution of percent leaf area or percent leaf area index change for the two strategies, individual CMIP6 models and the CMIP6 model mean.
October 21, 2024 at 7:23 PM
grquetin.bsky.social
Using a trait based plant physiological model that includes plant hydraulics (a mouthful for sure) we found that increased productivity (net primary productivity) and hydraulic stress (percent loss of conductance) were linked and max carbon usually went with increased stress.
A five panel figure including two panels showing the change in net primary productivity as a percentage vs. the change in percent loss of conductance for a max carbon leaf area strategy and a stress avoidance strategy. Point cloud of spatial points, with many points occurring in the quadrant of increased net primary productivity and increased percent loss of conductance. Other three panels are maps of the continental US. The first is colored by quadrant for max carbon gain. Light orange across the majority of the US for places that both productivity and stress incrase, a tiny sliver of dark orange where stress increases but productivity decreases in the norther midwest and north east. Northeast shows mostly light purple where both productivity and stress go down following a max carbon gain with dark purple showing areas in Nothern Montana and the midwest where productivity increases and stress goes down. Second map shows the stress avoidance strategy as quadrants (all purples, showing that stress can be avoided). Finally the third map shows the difference in productivity between the strategies, where a significant amount of the productivity is missed out on following a stress avoidance strategy along the west and southern edge of the US.
October 21, 2024 at 7:15 PM