PNAS cites Sandweiss research in article about climate change impacting El Ninos
In an article about how more frequent and intense El Nino events may be changing West Coast habitat, PNAS cited a 2001 study led by Dan Sandweiss, professor of anthropology at the University of Maine, that found mollusk declines in Peru coinciding with a period of frequent El Nino events about 2,900 years ago. Before this research, archaeologists hadn’t derived the precise number of events; now that researchers have confirmed that there is a tipping point, the next step is to refine it with more analyses of animal remains from more sites, Sandweiss wrote in an accompanying perspective.