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The Leading Edge Matters Too: Fitness and the Expression of Adaptive Differentiation Are Greatest at the High-Elevation Edge of a Species' Range.

Ecology letters - 1 Mar 2026

Shay Jackie E, Pennington Lillie K, Toews Daniel J, Green Elizabeth, Sexton Jason P

Abstract excerpt

Understanding adaptation at species' climate limits is key for predicting evolutionary and ecological responses to climate change. In montane environments, warming may drive species distribution shifts, yet the adaptive potential of populations at leading and rear edges remains unclear. Few studies have simultaneously tested both fitness and local adaptation across elevational range limits. We conducted common...

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Identifiers

PMID: 41818414
DOI: 10.1111/ele.70329
PMCID: PMC12981618

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