The Paleoenvironmental Laboratory at Kansas State University is led by Dr. Kendra McLauchlan in the Department of Geography. Our research reconstructs the functioning and characteristics of ecosystems in the past. Our research can be organized into three modules: 1) reconstructing material flows through terrestrial ecosystems, particularly nutrients, 2) reconstructing vegetation and fire history in grassland ecosystems, and 3) determining the magnitude and reversibility of human impacts on ecosystems. Most of our research involves field work supported by laboratory techniques. We study lacustrine sediment stratigraphy and chronology, and several proxy records including pollen, charcoal, elemental concentrations, and stable carbon and nitrogen isotopes. We also have expertise in dendrochronology and modern terrestrial ecosystem ecology. We use landscape models, remote sensing data, and GIS techniques, as well.