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Trait variation along elevation gradients in a dominant woody shrub is population-specific and driven by plasticity

Alix A. Pfennigwerth,J. Bailey,J. Schweitzer

Published 2017 in AoB Plants

ABSTRACT

Within a species, plant traits may vary substantially along environmental gradients. However, is such variation (1) consistent across locations and (2) genetic or non-genetic (i.e., plastic) in nature? In this study, we combine field observations and a common garden experiment to assess Rhododendron maximum trait variation within and among three elevation gradients. Our findings reveal that trait variation along environmental gradients in this species is (1) highly population-specific and (2) driven primarily by non-genetic factors (i.e., plasticity). Overall, our findings highlight the importance of examining multiple locations and suggest that trait responses to environmental change vary by location.

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