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A warm British winter or wet summer will generally have a positive effect on growth (dependent on site factors) and give rise to a wider ring in that year.

A harsh winter or dry/hot summer generally has a negative effect on a tree's growth causing a narrow tree-ring in that year.

The book is specifically concerned with the task of establishing a calendar date for a wood or charcoal specimen.

This concise but thorough explication of an important discipline will make dendrochonology more meaningful to students and professionals in archaeology, forestry, hydrology, and global change.

More about the photograph) Lesson plans and essays for teachers and students explore North Carolina's past before European contact.

Tree-ring analysis requires observation and pattern recognition.

Each year a tree’s growth ring has two parts; one is wide and light colored, and the other is narrow and dark. This grows during the wet spring and early summer when the tree has a lot of sap, and the cambium cells giving rise to the trunk growth are large and thin walled.

By winter, when the sap finally stops flowing, a smooth dark ring marks the end of the tree’s annual growth.

In most tree species in the British Isles a single tree-ring is produced each year and the tree-ring’s width varies in response to environmental factors, particularly rainfall and temperature.

Generally speaking the milder the weather the larger the tree-ring.

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