Dispersal versus climate: Expansion of Fagus and Tsuga into the Upper Great Lakes Region.
Davis MB, Woods KD, Webb SL, Futyma RP. 1986. Dispersal versus climate: Expansion of Fagus and Tsuga into the Upper Great Lakes Region.. Vegetatio. 67(2):93-103
Pollen records for American beech (Fagus grandifolia) and eastern hemlock (Tsuga canadensis) compiled from 50 sites in Michigan and Wisconsin show that both species entered the Upper Great Lakes region about 7000 years B.P., reaching their western and southwestern boundaries between 2000 and 1000 years B. P. Fagus advanced northward into lower Michigan as a continuous front, except where Lake Michigan served as a geographic barrier. This study shows that it is difficult to devise rigorous tests to distinguish between dispersal limitations and climate as factors determining range limits in the past.
- Type
- Journal Article
- Authors
- Davis, M; Woods, K; Webb, S; Futyma, R
- Units
- VOYA
- Keywords
- American beech (Fagus grandifolia), Climate Change, Eastern Hemlock (Tsuga canadensis), History, Holocene, Palynology, Plant Studies, Range, Seed Dispersal