What is Dendrochronology?

Ignazia11, no need to kill the tree we took a core sample smaller than a pencil

Trees were pushing water straight up through the roots and up the trunk for millions of years and humans only worked it out relatively recently. How ingenious! I love nature!

Useful in archaeology when they find wooden remains in a dig, for dating purposes, also to date old buildings.

Ignazia11, without killing the tree you can determine its age...measure round the trunk in cms, approximately 1metre up from the ground, then divide thst by 2.5. this gives you a rough age in years. trees on average grow an inch a year in trunk thickness.

Player #091217, But by taking a core sample ( without felling the tree) scientists can tell what conditions were experienced by the tree in any given year. In warm wet years the tree rings are wide, signifying increased growth. In cold dry years, the rings are narrow, signifying decreased growth. I imagine that if the variables were swapped, the tree would be dead or nearly so.