Derrick R. Newkirk
Indiana/Purdue Univ, Indianapolis, Indianapolis, IN
Activity
Date Unknown
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THE IMPACT OF CLIMATE AND PRE-COLUMBIAN AGRICULTURE ON SOIL AND NUTRIENTS IN SOUTHWESTERN COSTA RICA
T60 Quaternary Paleolakes: Their Utility in Paleohydrologic, Paleoclimatic, Tectonic, and Biogeographic Studies (Posters)
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AN ARIDIFICATION EVENT BEGINNING ABOUT 1600 AD IN CENTRAL AMERICA: EVIDENCE FROM A LAKE SEDIMENT CORE IN LAGUNA ZONCHO, COSTA RICA AND EFFECTS ON AGRICULTURE AND POPULATION
T90 Lakes and Holocene Environmental Change: The Use of Multiproxy Lake Records for Paleoclimate Reconstructions (Posters)