Dendroecological Dating of Geomorphic Disturbance in Trees

Dendroecological reconstructions of forest disturbance history using time-series analysis with intervention detection

The detection of release events in the annual growth increments of trees has become a central and widely applied method for reconstructing the disturbance history of forests. While numerous approaches have been developed for identifying release events, the preponderance of these methods relies on running means that compare the percent change in growth rates. These methods do not explicitly acco...

Dendroecological Reconstruction of Forest Disturbance History, Comparison and Parametrization of Methods for Carpathian Mountains

The reconstruction of forest disturbance history has become a major research issue for natural and mountainous forests because of their influence on the stand characteristics and structure. Different methods were developped to identify past disturbance events from the variations in tree ring width. The most used one, referred to as growth release detection method, is based on the comparison of ...

A comparison of times series approaches for dendroecological reconstructions of past canopy disturbance events

Time series analysis can identify outliers in tree-ring widths that may not only indicate past disturbances, but may also estimate the subsequent effe cts of these disturbances on tree growth. Findin g a way to isolate these disturbance signals from tree-ring time series could have broad applications in forest ecology and management. Time series outliers may be expressed as pulse, step, or tren...

Rock varnish microlamination dating of late Quaternary geomorphic features in the drylands of western USA

Varnish microlamination (VML) dating is a correlative age determination technique that can be used to date and correlate various geomorphic features in deserts. In this study, we establish a generalized late Quaternary (i.e., 0–300 ka) varnish layering sequence for the drylands of western USA and tentatively correlate it with the SPECMAP oxygen isotope record. We then use this climatically corr...

Millennial-scale varnish microlamination dating of late Pleistocene geomorphic features in the drylands of western USA