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= word = the science of): The science that uses tree rings dated to their exact year of formation to analyze temporal and spatial patterns of processes in the physical and cultural sciences.The science that uses tree rings to date when timber was felled, transported, processed, or used for construction or wooden artifacts.This careful inspection helps us classify and record the narrow and extremely narrow rings, the very wide or average width tree rings, false rings, micro-rings, traumatic resin ducts, past injuries to the xylem from a vartiety of disturbance processes, changes in growth rates, even a location where a ring should be but is not.Basically, this concept reinforces a central concept taught to all fledgling dendrochronologists: " As used in dendrochronology, this principle states that rates of plant processes are constrained by the primary environmental variable(s) that is most limiting. Tree growth “is controlled not by the total amount of resources available, but by the scarcest resource.” For example, precipitation is often the most limiting factor to plant growth in arid and semiarid areas.

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This is because, as a scientific discipline evolves, so too must the principles to which it adheres. I kept adding new principles while simultaneously revising or even deleting long familiar principles.Example: dating the growth suppressions left in tree rings from western spruce budworm outbreaks in the past.A layer of wood cells produced by a tree or shrub in one year, usually consisting of thin-walled cells formed early in the growing season (called earlywood) and thicker-walled cells produced later in the growing season (called latewood).I'm sure, over time, we may find that one or more principles below are not really needed or that new principles need to be introduced. This principle was most applied to reconstructions of past climate, assuming that the climate response seen in trees during modern times was the same as the climate response in trees during previous times.Study after study has now shown this not to be the case.

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