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They live in all sorts of conditions too: in temperate and tropical areas and in arid locations, from mountain landscapes to the rainforests of the equator and the temperate uplands of Scandinavia, they are everywhere.They are used for decoration in parks and gardens all over the world.They come in all shapes and sizes from the smallest saplings up to the colossal redwoods of North America - it could be said that we take them for granted, yet they are vital to teaching us about many aspects of our past. Before then, tree ancestors may have looked slightly tree-like but they were not trees in any proper sense.
There is one major drawback to dendrochronology and that is that we can only date the rings in the tree.
Due to the sweeping and diverse applications of this data, specialists can come from many academic disciplines.
There are no degrees in dendrochronology because though it is useful across the board, the method itself is fairly limited.
American Astronomre A E Douglass, who had a strong interest in studying the climate, developed the method around 1900 (4).
He theorised that tree rings could be used as proxy data to extend climate study back further than had previously been permissible.