eastern white pine

- The pollen record from Graham Lake indicates Tsuga canadensis first increased in abundance at [approximately]7500 yr BP to become one of the forest dominants, forming mixed forest along with P. strobus, Betula, and Quercus.

canadensis populations re-expanded there was a gradual decrease in pollen influx values of P. strobus, P.

saccharum, Ulmus, Quercus, Betula, P. strobus, and Thuja/Juniperus.

P. strobus pollen influx values increased exponentially after the initial decline of T.

saccharum were more abundant, whereas P. strobus, P.