Allyson Carroll

Young visitor looking at tree rings

How old are these redwoods, really?

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It’s the question that usually comes right after the one about height: “How old do you think this redwood is?”
And in many ways, the answer to this second question can be even more stunning than the first.

Allyson Carroll: Decoding History Hidden in Redwoods

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Dendrochronologist Allyson Carroll has decoded centuries of history hidden in giant sequoias and coast redwoods, thanks to the League’s research grants program and our members’ support.

Dendrochronology: The Glue that Binds RCCI

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The first phase of the Redwoods and Climate Change Initiative was based upon understanding how past climate has affected the ancient redwood and giant sequoia forests.  To do this, the research teams relied upon the science of dendrochronology: the analysis of …