Varianten
The authors hypothesized their common origin from an Atlantic refugium after the last glaciation.
We suggest that the shallow epicratonic platform area of the Canadian Shield may have served as a refugium for relatively archaic taxa.
Moreover, resting stages also afford species a temporal refugium from adverse conditions.
For the latter taxa, an alternative hypothesis would imply the iterative invasion of shelf habitats by morphologically conservative populations from shallow refugia .
During the Quaternary glaciations, cork oak may have survived in scattered refugia which possessed favourable microclimate conditions, and from which post-glacial colonization occurred over recent millennia.
Other
M-translate