32 seconds

Dr. Andrea Lloyd says:

An age structure is one way of describing a population in which you make age classes. So individuals that are 0-10 years old, 10-20 years old, 20-30 years old and so on. And you count the number of individuals in a population in each of those categories. And age structures are the basis for what we're doing, because they tell us something about how long a population has been around and you can tell that by the age of the oldest individual. They tell us something about when individuals area able to recruit, so when conditions are good for spruce to regenerate.

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