Late Holocene pollen stratigraphy in four northeastern United States lakes

Abstract

Four pollen diagrams from Maine, New York, and Pennsylvania provide fine resolution (40 or 80 years) records of vegetation change in NE US during the past 2000 years. A long term increase of pollen accumulation rates (PAR) of Picea occurred at the three sites in Maine and New York. Non-arboreal PAR were negligible prior to the European settlement of the area, after which there was an abrupt increase in non-arboreal pollen types. -from Authors