Geological events in the latter Cenozoic have influenced the distribution, abundance and genetic structure of tree populations in temperate and tropical North America.
The biogeographical history of temperate vegetation that spans large ranges of latitude is complex, involving multiple latitudinal shifts that might have occurred via different migration routes.
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We determined the regional structuring of genetic variation of sugar maple () using nuclear and chloroplast data.
The studied populations span a geographic range from Maine, USA (46°N), to El Progreso, Guatemala (15°N).
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