Fire Drives Transcontinental Variation in Tree Birch Defense against Browsing by Snowshoe Hares (original) (raw)

2009, The American Naturalist

potheses were rejected. Our results link transcontinental variation in species interactions to an abiotic environmental driver, fire. Intakes of defense toxins by Alaskan hares exceed those by Wisconsin hares, suggesting that the proposed selection mosaic may coincide with a geographic mosaic of coevolution.

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