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By sampling several tallgrass prairies that have incorporated cattle grazing, Bachle & Nippert report that climate plays a stronger role than grazing in shaping the physiological and anatomical traits of Andropogon gerardii (Big Bluestem). Trade-offs between succulent and non-succulent epiphytes underlie variation in drought tolerance and avoidanceĬover illustration Understanding how climate and grazing impact dominant grass species is essential for management and conservation of grasslands ecosystems. Gotsch and colleagues have found that these plant communities, which perform critical roles in water and nutrient cycling, express suites of traits relating to either drought resistance or drought tolerance and that some suites of traits are more vulnerable to climate change in this region. Cover illustration In Tropical Montane Forests, low-lying clouds frequently enshroud vegetation and support hundreds of vascular epiphyte species.