What is light compensation point?

The light compensation point is the specific light intensity at which the rates of photosynthesis and respiration in a plant are equal. At this point, the net carbon dioxide exchange is zero; the plant neither gains nor loses biomass. Below this light level, respiration exceeds photosynthesis, leading to a net loss of energy, while above it, photosynthesis surpasses respiration, allowing the plant to thrive and grow. This concept is crucial for understanding plant productivity and energy dynamics in ecosystems.