Dr. Roman Zweifel

Funktion

Wissenschaftlicher Mitarbeiter

Walddynamik

Ökophysiologie (EPHY)

Kontakt

roman.zweifel(at)wslto make life hard for spam bots.ch

+41 44 739 25 38+41 44 739 25 38

Eidg. Forschungsanstalt WSL
Zürcherstrasse 111
8903 Birmensdorf

Standort

Birmensdorf Bi HL D 27

Aktuell

10. Dezember 2018: Publikation in WSL Berichte: TreeNet - erster Analysebericht

28. November 2018: Publikation in Frontiers: Memory Effekte im Stammwachstum

9. November 2018: Zeitungsartikel nach Interview mit Zürichsee Zeitung: Sie fühlen dem Sihlwald den Puls

1. November 2018: Publikation in Trees: Das Wachstumspotential des Götterbaums

15. August 2018: TV-Reportage in 3Sat – nano: Bäume leiden unter akutem Wassermangel

13. August 2018: TV-Reportage mit SRF – Schweiz aktuell: Bäume leiden unter akutem Wassermangel

7. August 2018: Zeitungsartikel nach Interview mit dpa in Schaffhauser Nachrichten: Bäume leiden unter Stress wegen der Trockenheit

7. August 2018: Zeitungsartikel nach Interview mit dpa in Schweizer Bauer: Bäume leiden unter Trockenheit

3. August 2018: Zeitungsartikel nach Interview 20min: So belastet die Hitze die Gesundheit und die Natur

2. August 2018: Zeitungsartikel nach Interview NZZ: Wie der Wald unter der Trockenheit leidet

1. August 2018: Publikation in Environmental and Experimental Botany: Langzeit-Änderungen des Bodenwassers beeinflussen die Kontrollmechanismen des Baum-Wasserhaushalts.

17. April 2018: Publikation in Tree Physiology: Der Wasserhaushalt einer Mangroven-Art

4. April 2018: Vortrag 'Das Flüstern der Bäume'. Flying Science. Basel

15. März 2018: Publikation in Tree Physiology: Stammradiusänderungsmessungen erlauben das Schätzen des Kronenwasserpotentials

29. Jan 2018: Radio Interview SRF2 - Kultur: What about nature's worth? Musik, Soundkunst und der Klimawandel

26. Jan 2018: Vortrag Naturwissenschaftliche Gesellschaft Winterthur: Das Flüstern der Bäume

22. Dez 2017: Publikation in Forest, Ecology and Management: Wasserkonkurrenz in einem trockenen Föhrenwald

21. Dez 2017: Radio Interview Hessischer Rundfunk

9. May 2017: STARTS Prize 2017: TreeLab earns 'Honorary Mention'

17. Oct 2016: Publication in Tree Physiology: Trees maintain a similar conductance per leaf area

25. Sep 2016: Publication in Tree Physiology: Temperate tree species show identical response in tree water deficit

19 May 2016: Publication in New Phytologist: Are trees able to grow in periods of stem shrinkage?

24 Jan 2016: TreeNet in der Sonntagszeitung

2 Dec 2015: 'trees' at COP21 in Paris

25 Oct 2015: Publication in PCE: Radial stem variations

2 Jul 2015: Radio reportage about 'trees', Ö1 (Austrian radio)

23 Apr 2015: US-ambassador LeVine visits 'trees', Salgesch

16 Apr 2015: State president of France, Francois Hollande, visits 'trees', ZHdK

18 Nov 2014: TV report: Gesang der Bäume, Nano, 3SAT

4 Sep 2014: Exhibition trees: Pinus sylvestris, WSL

6 Jun 2014: Das Flüstern der Föhren, Die Zeit

4 Jun 2014: Die leise Symphonie der Bäume, SRF Kultur

10 Dec 2012: NEW Webpage Treenet.info

24 Jul 2012: Exhibition in San Francisco

Swissnex: trees: Downy Oak

-> Link to Researchgate

-> Link to: www.natkon.ch

WEITERFÜHRENDE INFORMATIONEN

Projekte

Drought 2018 - TreeNet meets Sentinel2

TreeNet permanently measures growth and tree water deficit (TWD) of about 250 tree individuals in forests all over Switzerland with so-called point dendrometers. TWD has shown to be a reasonable biological indicator for drought stress and quantifies the amount of missing water a tree needs to reach full saturation. In combination with spectral anomalies of satellite-based indices (e.g., NDWI from Sentinel2ab) between 2018 and a reference period we test whether we can find a close link between the two drought stress indicators.

FORClimateS

The project aims to aggregate and synthesize existing information on different spatial and temporal scales to provide decision-makers with relevant and robust information on short- and long-term risks for forests and forest functions and on adaptation strategies under different climate futures

Legacy effects on stem growth

Tree species largely differ in the amount of annual stem growth explained by current-year conditions. Historic conditions have been shown to additionally explain a significant fraction of the unexplained variance. We investigate conceptual and empirical approaches to investigate processes determining stem growth and the respective legacy effects.

TEA-Electrical potentials and accoustic emissions of trees

TEA combines established methods in ecophysiology (i.e., measuring sap flow, detecting continuous stem radius changes, and recording the microclimatic conditions) with advanced methods of measuring ultrasonic acoustic emissions (UAEs) and detecting electrophysiological signals, so-called electrical potentials (EPs).

Integrated Carbon Observation System (ICOS)

Integrated Carbon Observation System (ICOS) is a European research infrastructure to quantify and understand the greenhouse gas balance of the European continent and of adjacent regions.

Alle anzeigen

WSL-Publikationen

Researcher ID Web of Science: C-2852-2009

Wissenschaftliche Artikel Peer-reviewt

Weitere wissenschaftliche Publikationen

Zeitschriften und Broschüren

Maeder, M.; Zweifel, R., 2015: Trees: Pinus sylvestris - an artistic-scientific observation system. At the 2015 United Nations Climate Change Conference COP21, November 30 - December 11 2015, Paris. 12 p.

Häni, M.; Buchmann, N.; Zweifel, R., 2015: Tree growth and its relation to forest ecosystem net carbon uptake. PlantScienceNews: Newsletter of the Zurich-Basel Plant Science Center, 27: 9.

Zweifel, R.; Zeugin, F.; Lässig, R., 2008: Wenn es im Baumstamm klickt und rauscht. Informationsblatt Wald, 24: 5-6.

Zweifel, R.; Herzog, K., 2000: Bäume - Vorbilder für eine nachhaltige Industrie. Informationsblatt Wald, 3: 1-3.

Beruflicher Werdegang

Roman Zweifel (Dr. sc. nat. ETHZ)

Education
1986-1990		Matura, Kantonsschule St.Gallen.
1990-1996		Studies of Biology, University of Zurich.
1995		MSc in Ecophysiology, University of Zurich and WSL Birmensdorf.
1996-1999		PhD „The Rhythm of Trees“, ETH Zurich and WSL Birmensdorf.
Experience
2000		Postdoc, WSL Birmensdorf.
2000-2005		Swiss Federal Research Fellowship (Oberassistenz), Institute of Plant Sciences, University of Bern.
2002-2003		Consultant and analyst for sustainable development, Julius Bär Asset Management Ltd., Zurich.
2005-2010		Zweifel Consulting: System analyses and strategic consulting: the concepts of natural systems.
2006-today		Zweifel Consulting/Natkon: Measurement systems for the ecological research (www.natkon.ch).
2006-today		Senior Researcher at the WSL Birmensdorf. PI TreeNet Co-PI ICOS Switzerland PI TEA Co-PI trees PI research site Seehornwald, Davos PI Tree response to climate change and many more ...
2010-today		Review Editor of Frontiers in Plant Biophysics and Modeling Member Editorial Review Board Tree Physiology
2001-today		Lectureships and research contracts at the Universities of Bern (2001-2005, 2008) and Basel (2007-2015), at ETH Zurich (2010), and at CSIRO Hobart Tasmania Australia (2010), Auckland University of Technology AUT (2015)