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Questions tagged [phenology]

Questions pertaining to periodic life cycle events, and how these are affected by the external environment, climatic variation and weather fluctiations.

8
votes
1answer
274 views

What mechanisms tell temperate trees when to drop leaves?

I've been looking around and cannot find a definite answer on what it is that tells trees to change their metabolism and drop leaves. I see that such activity is called Deciduous. What interests me ...
5
votes
2answers
992 views

What determines the autumn leaf color?

It is autumn out there. Green, brown, red, yellow, and mixed-colored leaves drop from the trees to the ground. What determines the colors of the leaves? Wikipedia tells me Leaf senescence is the ...