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Photosynthesis Ctrls

For 330 Photosynthetic controls, from Chapin 2011

TermDefinition
Acclimation Morphological or physiological adjustment by an individual plant to compensate for the change in performance caused by a change in one environmental factor (e.g., temperature).
Adaptation Genetic adjustment by a population to maximize performance in a particular environment.
CO2 compensation point CO2 concentration at which net photosynthesis equals zero.
Dark respiration Dark respiration, mitochondrial respiration, or simply respiration, is carbon dioxide release (carbohydrate oxidation) in plants whether light is present or absent, which is distinct from photorespiration that occurs only in light.
Light compensation point Irradiance at which net photosynthesis equals zero.
Light response curve Graphical representation of the empirical relationship between irradiance and photosynthesis.
Net photosynthesis Net rate of carbon gain measured at the level of individual cells or leaves; the balance between simultaneous CO2 fixation and respiration.
Photosynthetic capacity Photosynthetic rate per unit leaf mass measured under favorable conditions of light, moisture, and temperature.
Quantum yield Moles of CO2 fixed per mole of light quanta absorbed; the initial slope of the light-response curve; also know as photosynthetic efficiency.
Shade leaves Leaf that is acclimated to shade or is produced by a plant adapted to shade.
Sun leaves Leaf that is acclimated to high light or is produced by a plant adapted to high light.
Water use efficiency Ratio of GPP to water loss; also sometimes calculated as the ratio of NPP to cumulative transpiration.
Created by: mdcoleman