ESS researchers team up on ecosystem stability studies

Research conducted in AirUCI's Randerson, Czimczik, and Guenther groups points to increased instability in forest ecosystems.  In the Randerson group, AirUCI grad student Jinhyuk Kim led a study that found ecosystems at high latitudes are becoming increasingly unstable as a result of increased wildfires.  “We’re seeing higher levels of photosynthesis that persist for decades after fire,” said Jinhyuk. “Instead of the evergreen conifer forest coming back right away, in some regions, we see a long-term replacement of these forests with faster-growing species.”  In a study led by Allison Welch, AirUCI grad student in the Czimczik group, her team explored plant expansion across the Arctic ecosystem.  “With increasing temperatures and wildfire activity, we’re seeing increased growth of bigger, deciduous shrubs,” said Allison.

Hui Wang, AirUCI grad student in the Guenther group, conducted a third study which was focused on an unexpected rise in emissions of isoprene – an important molecule that influences local climate through its effects on ozone, aerosols, and methane levels.  “This change will indirectly change the climate,” said Hui,. noting that rising temperatures have prompted plants to release more isoprene.  Read the article