Sentences with phrase «living growth rings»

This was based on research by Baillie and McAneney (2015) which compared the spacing between frost ring events (physical scarring of living growth rings by prolonged sub-zero temperatures) in the bristlecone pine tree ring chronology, and spacing between prominent acids in a suite of ice cores from both Greenland and Antarctica.

Not exact matches

Life does not merely «snowball»; it behaves more like a tree, which acquires successive rings according to the particular fashion of its growth, in a predetermined or directed manner.

A team of scientists in Hawaii has developed a way to chart the chronology of a turtle's life using the growth lines in its shell, much like the life span of a giant sequoia might be measured in tree rings.

Despite this trauma, analysis of the annual growth rings inside the dinosaur's bones by the Royal Ontario Museum's Dr. David Evans suggest it lived to maturity.

Researchers are using her tough, hairlike baleen to develop a new method of reconstructing a whale's life story — much as scientists use growth rings to reveal a tree's past.

This quahog can live for more than 500 years — and, as it does, it lays down growth rings in its shell.

Others worried that it relied too heavily on growth rings from a small number of ancient trees, such as California bristlecone pines that can live thousands of years clinging to mountainsides.

What was not seen quite so strongly is the way that the negative exponential growth curve severely underestimates the ring widths of the long lived group.

Doesn't that mean that these measurements of tree - ring growth versus age don't all start from year zero in the life of each tree?

Of course this is all moot if the relativel short - lived trees don't actually begin life with a (statistically) significantly higher growth rate, or if (say) ring growth and root growth don't go together... which I don't know about.

I can't find the reference, but Steve recently quoted someone who writes forest management software for a living, who said that it's very difficult to predict tree ring growth even when the precise siting weather and soil nutrient details for the growth year are known.

Doesn't that mean that the outer rings of living trees would be expected to be thicker than those of even directly corresponding (in age and growth factors) dead trees?

It is common for time series of ring widths to contain a low frequency component resulting entirely from the tree growth itself, with wider rings generally produced during the early life of the tree.