Compensation Point

compensation point

[‚käm·pən′sā·shən ‚pȯint]

(botany)

The light intensity at which the amount of carbon dioxide released in respiration equals the amount used in photosynthesis, and the amount of oxygen released in photosynthesis equals the amount used in respiration.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Compensation Point

in plants, a physiological indicator of the light intensity at which a leafs absorption of CO₂ during photosynthesis balances its production of CO₂ during respiration. The compensation point of sciophilous plants is significantly lower than that of photophilic plants. Sometimes the term “compensation point” refers to the combination of the general conditions of light and temperature as a result of which the plant’s formation and consumption of organic matter are balanced over a 24-hour period.

Mentioned in ?

References in periodicals archive ?

The CPET variables analyzed were oxygen uptake expressed in L/min ([VO.sub.2]), in percentage of predicted, or in metabolic equivalents (METs) at peak effort, anaerobic threshold (AT), and the respiratory compensation point (RCP) when achieved, Dioxide Carbon output in L/min ([VCO.sub.2]) and minute ventilation in L/min (VE).

The Role of Moderate Aerobic Exercise as Determined by Cardiopulmonary Exercise Testing in ALS

Light saturation point ([L.sub.sp]), light compensation point ([L.sub.cp]), dark respiration ([R.sub.d]), initial slope (IS), stomatal conductance ([g.sub.s]) and transpiration rate (E) at [A.sub.max] are in Table 1.

Factors that influence the distribution and growth of white heliotrope (Boraginaceae: Heliotropium tenellum (NUTT.) Torr.)

Is lactic acidosis a cause of exercise induced hyperventilation at the respiratory compensation point? Br J Sports Med 2004; 38: 622-625.

Energy system contribution in a maximal incremental test: correlations with pacing and overall performance in a 10-km running trial

The relationships among critical power determined from a 3-min all-out test, respiratory compensation point, gas exchange threshold, and ventilatory threshold.

Perceptual and physiological fatigue thresholds during cycle ergometry

Estimation of the exercise ventilatory compensation point by the analysis of the relationship between minute ventilation and heart rate.

The Intercept and Slope of breathlessness/chest pain-heart rate relationship in patients with Coronary artery disease using Exercise tolerance test

The Apparent Quantum Efficiency (AQE), Light Saturation Point (Psat), Light Compensation Point (Pcom), Respiration (Rd) and Maximum C[O.sub.2] Assimilation (Amax) (Table 1) were affected in different ways by water deficit comparing both cultivars.

Tolerance to water deficiency between two soybean cultivars: transgenic versus conventional/Tolerancia a deficiencia hidrica entre dois cultivares de soja: transgenico versus convencional

X-value is the corresponding first compensation point.

New method for magnetometer offset compensation

light saturation point (QA), and light compensation point ([Q.sub.O])

Leaf physiology of shade-grown Cycas micronesica leaves following removal of shade

For calculation of light compensation point ([I.sub.com]), we used computer software attached to the data logger, and the inverse quadratic equation for unit surface area, as described by Ben-Zion and Dubinsky (1988).

Factors Controlling the Expansion Behavior of Favia favus (Cnidaria: Scleractinia): Effects of Light, Flow, and Planktonic Prey

Three specific parameters (light compensation point, light saturation point, and maximum Pn) for each treatment are presented in Table 4.

Influence of Trinexapac-Ethyl on Diamond Zoysiagrass in a Shade Environment

Consequently, photosynthetic rates, light saturation point, light compensation point, respiration, conductance, and transpiration were expected to be low when compared to sun adapted plants.

Distribution of verbesina virginica (asteraceae, frost weed) in central texas and possible causes

There were no significant differences between sun and shade leaves for the light compensation point, transpiration rates, leaf water potential, leaf mass or leaf area.

Gas exchange rates of sun and shade leaves of Sophora secundiflora (Leguminosae, Texas Mountain Laurel)