Joan Pere Casas
My research interests focus on the lateral flux of carbon from land to ocean, with special interest in the sources and fate of dissolved organic matter (DOM) through river networks. I am currently a PhD student at the Catalan Institute for Water Research (ICRA; Spain), where I assess how in-stream processes shape DOM from headwaters to the sea using Mediterranean rivers as an archetype. I am also particularly interested in deriving a mechanistic understanding of organic matter degradation and the relative influence of intrinsic versus extrinsic factors.
As a PhD student at the Institute of Physicochemical and Biological Problems in Soil Science (Russian Academy of Sciences, Pushchino, Russia) I conduct spatial analysis of territories underlain by Yedoma permafrost in north-eastern Siberia and examine how thermokarst lake area is changing in Siberia due to climate influences. Accurate quantification of both of these terms is important for improving our estimates of carbon storage in the region and how it is responding to climate warming.
I'm interested in high altitude permafrost carbon release due to climate change and its impacts on biogeochemical cycling. As a PhD student at Peking University (China), I'm currently focused on thermokarst processes on the world’s highest plateau (Qinghai-Tibetan Plateau), which is particularly sensitive to the effects of climate change. With a variety of analytical tools, I investigate the transformations of permafrost carbon and assess the potential of ancient permafrost organic carbon as a carbon substrate for downstream receiving ecosystems.
As a PhD candidate at the Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences (Nanjing, China), I conduct research on the sources and bioavailability of dissolved organic matter in inland waters (China) using spectral absorption and fluorescence, as well as stable isotopes. I’m currently very interested in investigating the linkage between greenhouse gas emissions and the compositional dynamics of dissolved organic matter.
I am an analytical chemist with a focus on the development and implementation of methods for determining composition and structural changes as a result of photochemical processes in the fields of biogeochemistry, petroleomics and materials science. Currently my primary research focuses is on applying ultrahigh resolution characterization techniques on organic matter alongside optical analyses to examine dissolved organic carbon (DOC) produced from petrogenic sources.