My name is Kathryn (KC) Clark. I was a postdoctoral researcher at the University of Pennsylvania from 2014 to 2016, and a visiting scholar in 2017. I was supervised by Alain Plante. I am apart of the Luquillo critical zone observatory (LCZO). I research river biogeochemistry, focusing on suspended sediment, particulate organic carbon, and particulate nitrogen. My focus is on the Mameyes and Icacos watersheds in the El Yunque National Forest in Puerto Rico.