Why do the leaves produce more anthocyanins in the fall?

In the fall, as daylight decreases and temperatures drop, chlorophyll production in leaves slows down and eventually ceases, revealing other pigments. Anthocyanins are produced in response to stress factors such as increased light exposure, UV radiation, and variations in temperature. This pigment provides protection against these stresses and helps prevent water loss by reducing the amount of light that penetrates the leaf. Additionally, anthocyanins can deter herbivores and attract pollinators, aiding in the plant's reproductive processes.