Tree-Ring Talk

Consider a Spherical Tree: Forward and inverse studies using a simple model of ring width as a recorder of climate

This public talk is one part of a dissertation defense.

Climatic and ecological implications of Linanthus pungens shrub-chronologies at rock glacier sites of the eastern Sierra Nevada Range, California, USA.

This talk is part of Rebecca Franklin's doctoral dissertation defence.

Tree-ring δ¹⁸O and δD records at the northernmost summer monsoon boundary in northwest China

Calibrating Time Lags in Archaeological Tree-Ring Dating: the Colorado Old Wood Project, Phase I: Douglas Creek Arch and the Uncompahgre Plateau

Archaeologists have long been aware of the potential for serious overestimation of site ages based on radiocarbon and tree-ring dates from certain archaeological contexts. The “old wood problem” arises from the human use of deadwood elements for various purposes and the fact that trees are long-lived plants whose rings date to the years in which they were grown rather than to the years in which the organisms died. Despite a fairly unfocused concern with this issue, little effort has been devoted to quantifying the magnitude of the problem.

Shifting from Local to Landscape Controls of Disturbance Size and Severity: A Tree-Ring Reconstruction of Fire, Spruce Beetle Outbreaks, and Species Dynamics of the Pinaleño Mountains

Forest disturbances exert a strong control over species composition and structure. In the Sky Islands of the American Southwest, steep elevation gradients give rise to moisture and temperature gradients that support a diverse array of forest types and disturbance regimes in a relatively small geographic area.

Dendrochemistry of larch tree rings from North Siberia

A new perspective on drought history in the Four Corners: cool- and monsoon-season precipitation reconstructions for the Hopi and Navajo tribal lands

For well over a decade, the Hopi Tribe and Navajo Nation located in northeastern Arizona have suffered the effects of persistent drought conditions. Severe dry spells have critically impacted natural ecosystems, water resources, and regional livelihoods including dryland farming and ranching. Drought planning and resource management efforts in the region are based largely on the instrumental record of climate, which contains a limited number of severe, sustained droughts.

Second century megadrought in the Rio Grande headwaters: how unusual was medieval drought?

A Fire History of the Western San Juan Mountains, Colorado, A comparison of tree-ring and alluvial sediment methods

Long, spatially-explicit temperature reconstructions for temperate western North America and all North America

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