Find recent publications by LTRR faculty and students.


Software and Data

Download free tree-ring analysis software.

Research Interests by Subdiscipline

LTRR researchers are involved in a variety of subdisciplines of dendrochronology, each applying the science of tree-ring dating for a specific purpose, applying various methods to address relevant research questions.


the dating and study of behavior of past human cultures

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this broad subdiscipline involves the reconstruction and multiscalar study of the patterns and variability of climate elements

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the study of past and present forest ecological form and function, including topics such as fire and/or insect dynamics and forest composition history

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the study of present landforms and past geomorphic processes, including volcanic eruptions, earthquakes, avalanches, glacial movement, and landslides

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the reconstruction and study of past and present hydrologic phenomena, including water supply, river flow, and flood frequencies (related to dendroclimatology)

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dendroisotope chemistry

the study of stable isotopes of carbon, oxygen, and/or hydrogen of tree rings and application of results in various climatological, ecological, or hydrological contexts

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dendroenvironmental studies

the analysis of inorganic elements in tree rings and interpretation of chemical changes in the environment through time

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basic dendrochronology techniques

Improving methods of dendrochronology, including use of high-technology methods such as X-ray densitometry and image analysis.

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quantitative analysis methods

Basic research on how best to quantitatively analyze tree-ring data.