From jyeakel at ucmerced.edu Mon Dec 5 09:13:33 2022 From: jyeakel at ucmerced.edu (Justin Yeakel) Date: Mon, 5 Dec 2022 09:13:33 -0800 Subject: [Enviro-lunch] Enviro-Lunch TODAY 12-1:15PM PST for Dr. Abney's Seminar: "Dissolved Pyrogenic Carbon: Constraints and Drivers in the Soil System" Message-ID: Dr. Rebecca Abney *Dissolved Pyrogenic Carbon: Constraints and Drivers in the Soil System* *December 5th, **2022 * * 12:00-1:15PM PST* *via * *https://ucmerced.zoom.us/j/85854124987* *and* *SSB 170 (UC Merced)* *Abstract:* Wildfire severity has been increasing in the past several decades, particularly in the Western US, and in the Southeastern US, there has been an exponential increase in the use of prescribed fire. One of the main by-products of fire is the formation of pyrogenic carbon (PyC), which is a significant component of the global soil carbon pool. It has received considerable research attention due to its longer persistence in soil than other soil organic matter components. However, it is susceptible to rapid loss via processes such as decomposition and leaching, and it has been found in rivers, lakes, and oceans worldwide. I will present results from both a meta-analysis and field studies that demonstrate the variability in quality and stocks of PyC across watersheds and time. These data suggest some dominant controls on the fate of aqueous fluxes of PyC, including burn severity, decomposition, and precipitation. However, improved quantitative understanding of environmental controls on soil organic matter and PyC fluxes is needed to scale these results up to larger-scale global carbon models. [image: Picture1.jpg] *Bio:* Dr. Rebecca Abney is currently an Assistant Professor in Forest and Disturbed Soils in the Warnell School of Forestry at the University of Georgia. She completed her undergraduate degree from the University of St Andrews, in Scotland in 2012, where she studied environmental biology and physical geography. She followed that with a PhD from the University of California, Merced on the interactive roles of fire and erosion on the fate of carbon in soil. She did a post-doctoral fellowship at Indiana University on the role of soil chemistry in mediating reactive nitrogen fluxes. Her current work is focused on mechanisms that drive stability and loss of soil organic matter from soil, particularly in soils impacted by fire (wild and prescribed fire), urbanization, and land use change. -- Justin D. Yeakel Associate Professor | UC Merced http://jdyeakel.github.io -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: Picture1.jpg Type: image/jpeg Size: 168521 bytes Desc: not available URL: From jyeakel at ucmerced.edu Mon Dec 5 09:29:34 2022 From: jyeakel at ucmerced.edu (Justin Yeakel) Date: Mon, 5 Dec 2022 09:29:34 -0800 Subject: [Enviro-lunch] Enviro-Lunch TODAY 12-1:15PM PST for Dr. Abney's Seminar: "Dissolved Pyrogenic Carbon: Constraints and Drivers in the Soil System" Message-ID: Dr. Rebecca Abney *Dissolved Pyrogenic Carbon: Constraints and Drivers in the Soil System* *December 5th, **2022 * * 12:00-1:15PM PST* *via * *https://ucmerced.zoom.us/j/85854124987* *and* *SSB 170 (UC Merced)* *Abstract:* Wildfire severity has been increasing in the past several decades, particularly in the Western US, and in the Southeastern US, there has been an exponential increase in the use of prescribed fire. One of the main by-products of fire is the formation of pyrogenic carbon (PyC), which is a significant component of the global soil carbon pool. It has received considerable research attention due to its longer persistence in soil than other soil organic matter components. However, it is susceptible to rapid loss via processes such as decomposition and leaching, and it has been found in rivers, lakes, and oceans worldwide. I will present results from both a meta-analysis and field studies that demonstrate the variability in quality and stocks of PyC across watersheds and time. These data suggest some dominant controls on the fate of aqueous fluxes of PyC, including burn severity, decomposition, and precipitation. However, improved quantitative understanding of environmental controls on soil organic matter and PyC fluxes is needed to scale these results up to larger-scale global carbon models. [image: Screen Shot 2022-12-05 at 9.27.18 AM.png] *Bio:* Dr. Rebecca Abney is currently an Assistant Professor in Forest and Disturbed Soils in the Warnell School of Forestry at the University of Georgia. She completed her undergraduate degree from the University of St Andrews, in Scotland in 2012, where she studied environmental biology and physical geography. She followed that with a PhD from the University of California, Merced on the interactive roles of fire and erosion on the fate of carbon in soil. She did a post-doctoral fellowship at Indiana University on the role of soil chemistry in mediating reactive nitrogen fluxes. Her current work is focused on mechanisms that drive stability and loss of soil organic matter from soil, particularly in soils impacted by fire (wild and prescribed fire), urbanization, and land use change. -- Justin D. Yeakel Associate Professor | UC Merced http://jdyeakel.github.io -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: Screen Shot 2022-12-05 at 9.27.18 AM.png Type: image/png Size: 172477 bytes Desc: not available URL: