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1 January 2014 Dendroclimatic Potential of Plains Cottonwood (Populus deltoides Subsp. Monilifera) from the Northern Great Plains, USA
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Abstract

A new 368-year tree-ring chronology (A.D. 1643–2010) has been developed in western North Dakota using plains cottonwood (Populus deltoides subsp. monilifera) growing on the relatively undisturbed floodplain of the Little Missouri River in the North Unit of Theodore Roosevelt National Park. We document many slow-growing living trees between 150–370 years old that contradict the common understanding that cottonwoods grow fast and die young. In this northern location, cottonwood produces distinct annual rings with dramatic interannual variability that strongly crossdate. The detrended tree-ring chronology is significantly positively correlated with local growing season precipitation and soil moisture conditions (r  =  0.69). This time series shows periods of prolonged low radial tree growth during the known droughts of the instrumental record (e.g. 1931–1939 and 1980–1981) and also during prehistory (e.g. 1816–1823 and 1856–1865) when other paleoclimate studies have documented droughts in this region. Tree rings of cottonwood will be a useful tool to help reconstruct climate, streamflow, and the floodplain history of the Little Missouri River and other northern river systems.

The Tree-Ring Society
Jesse Edmondson, Jonathan Friedman, David Meko, Ramzi Touchan, Julian Scott, and Alan Edmondson "Dendroclimatic Potential of Plains Cottonwood (Populus deltoides Subsp. Monilifera) from the Northern Great Plains, USA," Tree-Ring Research 70(1), 21-30, (1 January 2014). https://doi.org/10.3959/1536-1098-70.1.21
Received: 29 January 2013; Accepted: 1 October 2013; Published: 1 January 2014
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