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OOS-52: Casting light on nocturnal stomatal and canopy conductance
Friday,
August 12, 8 AM - 11:30 AM, Meeting Rooms 510a and 510c, Level 5, Palais
des congrès de Montréal
Organizers:
Nathan
Phillips (nathan@bu.edu),
Margaret Barbour
Description:
Night
occupies half of plant lives, but is when we least understand how plants
function. Increasing evidence is challenging the long held assumption that, to
prevent water loss when there is no opportunity for photosynthesis, almost all
plants close their stomata at night. If nocturnal stomatal conductance is
widespread, this phenomenon has wide implications for carbon and water budgets
of plants and ecosystems, especially as climate is showing more pronounced
changes at night than during day. The occurrence and significance of nocturnal
stomatal conductance spans multiple spatial scales from individual stomata to
entire ecosystems, and disciplines from plant physiology to biogeochemistry.
Contributors to this organized oral session span this full range of scales, and
specifically address topics including: observations of nocturnal conductance
across species and biomes, significance of nocturnal conductance for nutrient
transport and stable isotope biogeochemistry, and ecosystem scale carbon and
water exchange models and measurement.
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