Tree-Ring Talk

Dendroecology of alpine treelines on the Tibetan Plateau: an integrative understanding from xylogenesis to ecosystem

Abstract: The Tibetan Plateau hosts the world’s highest natural treelines, being potentially sensitive to climate change. In the last 10 years, Dr. Liang has been focusing on dendroecology of alpine treeline on the Tibetan Plateau. His research aims to answer these questions: what is the physiological mechanism for alpine treeline formation based on nature treelines on the Tibetan Plateau? Whether are there significant changes in structures and patterns of alpine treeline?

Timber and forest management in the Southern French Alps: dendrochronology and interdisciplinarity

Timber study makes it possible to date the traditional buildings (farms, barns, wine presses, mills, bridge ...) and specify the time variations of relationships between human societies, timber uses and forest management. The studied area is the Durance valley, and, more generally, the southern French Alps. The time window of this study is the medieval times, modern and contemporary periods, when a large amount of material (wood) is available.

The Many Meanings of Climate: Insights from My Multidisciplinary Journey

A typical list of definitions for the phenomenon known as “climate” tends to range from simple phrases (“average weather”), to quotable sayings (“climate is what you expect, weather is what you get”), to generalized descriptions of a wide range of features associated with the term (“the statistical description in terms of the mean and variability of relevant quantities over a period ranging from months to thousands or millions of years”).

Montane subtropical forests of South America: advances in (hydro)climatic studies

During the last few years, significant progress has been made in the development of ring-width chronologies in the subtropical forests of South America. Seasonally dry forests are characterized by a marked regionality in precipitation and the presence of numerous woody species that are poorly studied from the point of view of dendrochronology. However, dendrochronological records have made it possible to identify the responses of vegetation to climate in different places, and to develop climatic and hydrological reconstructions.

Interpreting tree ring records using a plant ecophysiological approach

Trees rings record a wealth of information on climate, disturbance, and forest dynamics, and can record these processes from the plot to regional to global scales. However, extracting plant physiological processes from the tree ring record has proved to be more difficult, as integration of leaf to whole tree processes can often lead to confounding results. My research aims to bring a plant ecophysiological perspective to interpreting the tree ring record and to ask, what processes are the rings actually recording?

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