Roman Zweifel, Autor bei TreeNet

Roman Zweifel

46 posts

Current drought effects on forest trees in Switzerland (3)

5 years ago

Drought in Switzerland is further intensifying. Particularly forest trees in the lowlands (Mittelland) show steadily increasing tree water deficit-induced stem shrinkage (TWD, Baumwasserdefizit). The values are far above the TWDs…

Current drought effects on forest trees in Switzerland (2)

News

5 years ago

Rain over the weekend brought some stress relief to forest trees in Switzerland, particularly in the Northern Alps and in the Valais (see situation on July 16). In these two…

Current drought effects on forest trees in Switzerland (1)

News

5 years ago

Trees in the Northern Alps and in the Valais show distinctly higher tree water deficit-induced stem shrinkage (TWD) than in the years before. We conclude that the investigated tree species…

Quickviews of current raw data available

News

6 years ago

TreeNet raw data of the past five days are freely browsable. Try the following links to see the latest data of individual dendrometers of the entire network all available sensors…

Are there growth trends of the Swiss tree species over the past 5 years?

News

6 years ago

We are currently analyzing the drivers of wood growth of Swiss forest trees over the past five years (preliminary results). Figure 1 Growth trends of the main tree species in…

We are moving …

News

7 years ago

TreeNet.info is moving its data base and the related processing platform to a new server. Please apologize for inconvenience. All services including online data display and dendrometer processing tool will…

Are trees able to grow in periods of stem shrinkage?

News

7 years ago

Publication in New Phytologist about separating stem radius measurements into growth and tree water deficit Link to article Summary Separating continuously measured stem radius (SR) fluctuations into growth-induced irreversible stem expansion (GRO)…

Dendrometer processing tool online now

News

7 years ago

TreeNet.info offers a public tool to process your own raw dendrometer data now. Your dendrometer data will be aligned, cleaned for jumps and outliers, gap-filled for short periods <3 hours,…

TreeNet in Swiss Newspaper

News

7 years ago

Wie man die Bäume wachsen hört – Das faszinierende Universum Wald bietet viele Geheimnisse: Seiner komplexen Natur sind Wissenschaftler nun auch mit Hörgeräten auf der Spur. Artikel in der Sonntagszeitung,…

When do trees grow (3)?

News

7 years ago

Radial stem growth of trees (GRO) occurs mainly during the night. Daylight hours show systematically lower growth. The columns in the figure below indicate how much of the annual growth…