FIGURE 5 - Maps of population locations and common gardens,
with label sizes scaled to (a, c) predicted genetic offsets from
GF-X or (b, d) climatic transfer distances for transplanting
populations from their home environment to either the (red dot) VT or
(red triangle) IH common garden. Only populations with cyan labels were
planted in the respective garden in each column. Dark shading is the
range of balsam poplar from
(Little, 1971).