Photo Library >> World Forest Ecosystems >> Autumn colors, northern Norway

Autumn colors, northern Norway

Autumn colors, northern Norway

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Uploaded 03 Jun 2011 by Peter Prokosch
Year: 2010
From collection: World Forest Ecosystems
Taken by: Peter Prokosch
The changing of the forest colors in the autumn is caused by the retreat of the same pigment as the one that makes the leaves green in the spring – chlorophyll. Chlorophyll absorbs solar rays, which in turn is used for the production of the plant nourishment, namely simple sugars produced by water and carbon dioxide. As daylight hours become shorter at the end of summer and the temperatures drop, the chlorophyll of the leaves begin to degrade and their hidden pigments such as beta-carotene c ...
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