Asmeret Asefaw Berhe, University of California, Merced, will present.
Deep soil layers (below 30cm or A-horizon) account for up to 70% of the carbon (C) stored in soils. Decomposition of deep soil organic matter (SOM) contributes to surface carbon dioxide efflux, and is controlled by climate, soil physico-chemical properties, and geomorphology of the landscapes and associated hydrology. This presentation will include synthesis of our past and ongoing projects on deep SOM dynamics, including SOM in weathered bedrock and how climate regulates SOM storage, chemical composition, persistence and stabilization mechanisms using results from the NSF funded Southern Sierra Critical Zone Observatory, and agricultural systems in California. Our work contributes to improve our: understanding of mechanisms that control deep SOM persistence and ability to predict the vulnerability of soil carbon to climate change.
Read more about Asefaw Berhe's research on her research group website.
Hosts: Bronwen Konecky & Jeff Catalano
By joining department-hosted virtual colloquia, you agree to uphold our code of conduct for Zoom sessions.
If you are a member of the WashU community, login with your WUSTL Key to interact with events, personalize your calendar, and get recommendations.Login with WUSTL Key
If you are not a member of the WashU community, please login via one of the options below to interact with our calendar.