Pollen records from northern Grand Teton National Park, the Pinyon Peak Highlands, and southern Yellowstone National Park were examined to study the pattern of reforestation and climatic change following late-Pinedale Glaciation. The vegetational reconstruction was aided by analyses of associated plant macrofossila and the modern pollen rain of the region. Radiocarbon-age determinations and tephrochronology provided a chronologic framework to help correlate pollen records among sites. [Fire references on pages 189 and 195.]© by the Ecological Society of America. Abstract reproduced by permission.