Dr. Roman Zweifel
Funktion
Wissenschaftlicher Mitarbeiter
Kontakt
Eidg. Forschungsanstalt WSL
Zürcherstrasse 111
8903 Birmensdorf
Standort
Birmensdorf Bi HL D 27
Aktuell
18. Juli 2020: Medienberichte über Legacy-Effekte in Föhren: Forstpraxis, Bote, Swissinfo, Blick, Wald Schweiz, BZ, DBG, und einige mehr
15. Juli 2020: Medienmitteilung WSL: Waldföhren haben ein ökologisches Gedächtnis
20. Mai 2020: Publikation in New Phytologist: Determinants of legacy effects in pine trees
5. Mai 2020: Publikation in Wald und Holz: TreeNet - Wann wachsen unsere Bäume?
10. März 2020: Publikation in Wald und Holz: TreeNet - Am Puls der Bäume
21. November 2019: Die Forschungsfläche Seehornwald Davos erhält das CLASS 1 Label von ICOS.
21. November 2019: TV-Reportage: Ökoakustik: Die Tonspur des Klimas
1. November 2019: Relaunch TreeNet.info
31. Oktober 2019: Radio-Reportage im Bayrischen Rundfunk mit Marcus Maeder: Horizonte - Von Käfern, Kiefern und dem Klimawandel
5. September 2019: Radio-Reportage auf MDR:Vom Flüstern, Ächzen und Knacken der Bäume
22. August 2019: TreeNet.info Artikel:First preliminary results about the effects of the drought summer 2018 on forest trees
12. August 2019: TV-Reportage auf RTS 1: La canicule tue nos forêt
11. Juli 2019: Zeitungsartikel in NZZ:Rückblick auf den Trockensommer 2018
24. Mai 2019: Forum für Wissen Artikel:Wie viel Trockenheit ertragen unsere Wälder? Lehren aus extremen Trockenjahren
23. April 2019: Zeitungsartikel in La Forêt: TreeNet fait 'parler' les arbres
6. Dezember 2018: TV-Reportage auf SRF1 - Einstein:Wie die Trockenheit unseren Wald umbaut
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
28. Januar 2018: Radio-Reportage SRF 1: Kontext - Soundkunst: Ein Tag im Leben einer Walliser Waldföhre
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
-> Link to Researchgate
-> Link to: www.natkon.ch
WEITERFÜHRENDE INFORMATIONEN
WSL-Publikationen
Researcher ID Web of Science: C-2852-2009
Wissenschaftliche Artikel Peer-reviewt
Walthert, L.; Ganthaler, A.; Mayr, S.; Saurer, M.; Waldner, P.; Walser, M.; Zweifel, R.; Von Arx, G., 2021: From the comfort zone to crown dieback: sequence of physiological stress thresholds in mature European beech trees across progressive drought. Science of the Total Environment, 753: 141792 (14 pp.). doi: 10.1016/j.scitotenv.2020.141792
Zweifel, R.; Ginzler, C.; Psomas, A.; Braun, S.; Walthert, L.; Etzold, S., 2020: Baumwasserdefizite erreichten im Sommer 2018. Höchstwerte – war das aus dem All erkennbar?. Schweizerische Zeitschrift für Forstwesen, 172, 5: 302-305.
Gharun, M.; Hörtnagl, L.; Paul-Limoges, E.; Ghiasi, S.; Feigenwinter, I.; Burri, S.; Marquardt, K.; Etzold, S.; Zweifel, R.; Eugster, W.; Buchmann, N., 2020: Physiological response of Swiss ecosystems to 2018 drought across plant types and elevation. Philosophical Transactions of the Royal Society B: Biological Sciences, 375, 1810: 20190521 (10 pp.). doi: 10.1098/rstb.2019.0521
Zweifel, R.; Etzold, S.; Sterck, F.; Gessler, A.; Anfodillo, T.; Mencuccini, M.; Von Arx, G.; Lazzarin, M.; Haeni, M.; Feichtinger, L.; Meusburger, K.; Knuesel, S.; Walthert, L.; Salmon, Y.; Bose, A.K.; Schoenbeck, L.; Hug, C.; De Girardi, N.; Giuggiola, A.; ... Rigling, A., 2020: Determinants of legacy effects in pine trees - implications from an irrigation-stop experiment. New Phytologist, 227, 4: 1081-1096. doi: 10.1111/nph.16582
Barraclough, A.D.; Cusens, J.; Zweifel, R.; Leuzinger, S., 2020: Environmental drivers of stem radius change and heterogeneity of stem radial water storage in the mangrove Avicennia marina (Forssk.) Vierh.. Agricultural and Forest Meteorology, 280: 107764 (12 pp.). doi: 10.1016/j.agrformet.2019.107764
Burri, S.; Haeler, E.; Eugster, W.; Haeni, M.; Etzold, S.; Walthert, L.; Braun, S.; Zweifel, R., 2019: How did Swiss forest trees respond to the hot summer 2015?. Erde, 150, 4: 214-229. doi: 10.12854/erde-2019-420
Rigling, A.; Etzold, S.; Bebi, P.; Brang, P.; Ferretti, M.; Forrester, D.; Gärtner, H.; Gessler, A.; Ginzler, C.; Moser, B.; Schaub, M.; Stroheker, S.; Trotsiuk, V.; Walthert, L.; Zweifel, R.; Wohlgemuth, T., 2019: Wie viel Trockenheit ertragen unsere Wälder? Lehren aus extremen Trockenjahren. In: Bründl, M.; Schweizer, J. (eds), 2019: Lernen aus Extremereignissen. Forum für Wissen 2019: Lernen aus Extremereignissen, Davos, Switzerland. 39-51.
Donnellan Barraclough, A.; Zweifel, R.; Cusens, J.; Leuzinger, S., 2019: Disentangling the net: concomitant xylem and over-bark size measurements reveal the phloem-generated turgor signal behind daytime stem swelling in the mangrove Avicennia marina. Functional Plant Biology, 46, 5: 393-406. doi: 10.1071/FP18155
Knüsel, S.; Conedera, M.; Zweifel, R.; Bugmann, H.; Etzold, S.; Wunder, J., 2018: High growth potential of Ailanthus altissima in warm and dry weather conditions in novel forests of southern Switzerland. Trees: Structure and Function, 33, 2: 395-409. doi: 10.1007/s00468-018-1785-x
Grossiord, C.; Sevanto, S.; Limousin, J.; Meir, P.; Mencuccini, M.; Pangle, R.E.; Pockman, W.T.; Salmon, Y.; Zweifel, R.; McDowell, N.G., 2018: Manipulative experiments demonstrate how long-term soil moisture changes alter controls of plant water use. Environmental and Experimental Botany, 152: 19-27. doi: 10.1016/j.envexpbot.2017.12.010
Lazzarin, M.; Zweifel, R.; Anten, N.; Sterck, F.J., 2018: Does phloem osmolality affect diurnal diameter changes of twigs but not of stems in Scots pine?. Tree Physiology, 39, 2: 275-283. doi: 10.1093/treephys/tpy121
Donnellan Barraclough, A.; Zweifel, R.; Cusens, J.; Leuzinger, S., 2018: Daytime stem swelling and seasonal reversal in the peristaltic depletion of stored water along the stem of Avicennia marina (Forssk.) Vierh. Tree Physiology, 38, 7: 965-978. doi: 10.1093/treephys/tpy021
Dietrich, L.; Zweifel, R.; Kahmen, A., 2018: Daily stem diameter variations can predict the canopy water status of mature temperate trees. Tree Physiology, 38, 7: 941-952. doi: 10.1093/treephys/tpy023
Giuggiola, A.; Zweifel, R.; Feichtinger, L.M.; Vollenweider, P.; Bugmann, H.; Haeni, M.; Rigling, A., 2018: Competition for water in a xeric forest ecosystem – Effects of understory removal on soil micro-climate, growth and physiology of dominant Scots pine trees. Forest Ecology and Management, 409: 241-249. doi: 10.1016/j.foreco.2017.11.002
Mencuccini, M.; Salmon, Y.; Mitchell, P.; Hölttä, T.; Choat, B.; Meir, P.; O'Grady, A.; Tissue, D.; Zweifel, R.; Sevanto, S.; Pfautsch, S., 2017: An empirical method that separates irreversible stem radial growth from bark water content changes in trees: theory and case studies. Plant, Cell and Environment, 40, 2: 290-303. doi: 10.1111/pce.12863
Von Arx, G.; Arzac, A.; Fonti, P.; Frank, D.; Zweifel, R.; Rigling, A.; Galiano, L.; Gessler, A.; Olano, J.M., 2017: Responses of sapwood ray parenchyma and non-structural carbohydrates of Pinus sylvestris to drought and long-term irrigation. Functional Ecology, 31, 7: 1371-1382. doi: 10.1111/1365-2435.12860
Haeni, M.; Zweifel, R.; Eugster, W.; Gessler, A.; Zielis, S.; Bernhofer, C.; Carrara, A.; Grünwald, T.; Havránková, K.; Heinesch, B.; Herbst, M.; Ibrom, A.; Knohl, A.; Lagergren, F.; Law, B.E.; Marek, M.; Matteucci, G.; McCaughey, J.H.; Minerbi, S.; ... Buchmann, N., 2017: Winter respiratory C losses provide explanatory power for net ecosystem productivity. Journal of Geophysical Research G: Biogeosciences, 122, 1: 243-260. doi: 10.1002/2016JG003455
Brinkmann, N.; Eugster, W.; Zweifel, R.; Buchmann, N.; Kahmen, A., 2016: Temperate tree species show identical response in tree water deficit but different sensitivities in sap flow to summer soil drying. Tree Physiology, 36, 12: 1508-1519. doi: 10.1093/treephys/tpw062
Zeiter, M.; Schärrer, S.; Zweifel, R.; Newbery, D.M.; Stampfli, A., 2016: Timing of extreme drought modifies reproductive output in semi-natural grassland. Journal of Vegetation Science, 27, 2: 238-248. doi: 10.1111/jvs.12362
Zweifel, R.; Haeni, M.; Buchmann, N.; Eugster, W., 2016: Are trees able to grow in periods of stem shrinkage?. New Phytologist, 211, 3: 839-849. doi: 10.1111/nph.13995
Zielis, S.; Etzold, S.; Zweifel, R.; Eugster, W.; Haeni, M.; Buchmann, N., 2014: NEP of a Swiss subalpine forest is significantly driven not only by current but also by previous year's weather. Biogeosciences, 11, 6: 1627-1635. doi: 10.5194/bg-11-1627-2014
Zweifel, R.; Drew, D.M.; Schweingruber, F.; Downes, G.M., 2014: Xylem as the main origin of stem radius changes in Eucalyptus. Functional Plant Biology, 41, 5: 520-534. doi: 10.1071/FP13240
Dawes, M.A.; Zweifel, R.; Dawes, N.; Rixen, C.; Hagedorn, F., 2014: CO2 enrichment alters diurnal stem radius fluctuations of 36-yr-old Larix decidua growing at the alpine tree line. New Phytologist, 202, 4: 1237-1248. doi: 10.1111/nph.12742
Etzold, S.; Zweifel, R.; Ruehr, N.K.; Eugster, W.; Buchmann, N., 2013: Long-term stem CO2 concentration measurements in Norway spruce in relation to biotic and abiotic factors. New Phytologist, 197, 4: 1173-1184. doi: 10.1111/nph.12115
Rigling, A.; Bigler, C.; Eilmann, B.; Feldmeyer-Christe, E.; Gimmi, U.; Ginzler, C.; Graf, U.; Mayer, P.; Vacchiano, G.; Weber, P.; Wohlgemuth, T.; Zweifel, R.; Dobbertin, M., 2013: Driving factors of a vegetation shift from Scots pine to pubescent oak in dry Alpine forests. Global Change Biology, 19, 1: 229-240. doi: 10.1111/gcb.12038
Zweifel, R.; Bangerter, S.; Rigling, A.; Sterck, F.J., 2012: Pine and mistletoes: how to live with a leak in the water flow and storage system?. Journal of Experimental Botany, 63, 7: 2565-2578. doi: 10.1093/jxb/err432
Slot, M.; Janse-ten Klooster, S.H.; Sterck, F.J.; Sass-Klaassen, U.; Zweifel, R., 2012: A lifetime perspective of biomass allocation in Quercus pubescens trees in a dry, alpine valley. Trees: Structure and Function, 26, 5: 1661-1668. doi: 10.1007/s00468-012-0717-4
Sterck, F.J.; Martínez-Vilalta, J.; Mencuccini, M.; Cochard, H.; Gerrits, P.; Zweifel, R.; Herrero, A.; Korhonen, J.F.J.; Llorens, P.; Nikinmaa, E.; Nolè, A.; Poyatos, R.; Ripullone, F.; Sass-Klaassen, U., 2012: Understanding trait interactions and their impacts on growth in Scots pine branches across Europe. Functional Ecology, 26, 2: 541-549. doi: 10.1111/j.1365-2435.2012.01963.x
Etzold, S.; Ruehr, N.K.; Zweifel, R.; Dobbertin, M.; Zingg, A.; Pluess, P.; Häsler, R.; Eugster, W.; Buchmann, N., 2011: The carbon balance of two contrasting mountain forest ecosystems in Switzerland: similar annual trends, but seasonal differences. Ecosystems, 14, 8: 1289-1309. doi: 10.1007/s10021-011-9481-3
Eilmann, B.; Zweifel, R.; Buchmann, N.; Graf Pannatier, E.; Rigling, A., 2011: Drought alters timing, quantity, and quality of wood formation in Scots pine. Journal of Experimental Botany, 62, 8: 2763-2771. doi: 10.1093/jxb/erq443
Zweifel, R.; Eugster, W.; Etzold, S.; Dobbertin, M.; Buchmann, N.; Häsler, R., 2010: Link between continuous stem radius changes and net ecosystem productivity of a subalpine Norway spruce forest in the Swiss Alps. New Phytologist, 187, 3: 819-830. doi: 10.1111/j.1469-8137.2010.03301.x
Zweifel, R.; Rigling, A.; Dobbertin, M., 2009: Species-specific stomatal response of trees to drought - a link to vegetaion dynamics?. Journal of Vegetation Science, 20, 3: 442-454. doi: 10.1111/j.1654-1103.2009.05701.x
Steppe, K.; Zeugin, F.; Zweifel, R., 2009: Low-decibel ultrasonic acoustic emissions are temperature-induced and probably have no biotic origin. New Phytologist, 183, 4: 928-931. doi: 10.1111/j.1469-8137.2009.02976.x
Martinéz-Vilalta, J.; Cochard, H.; Mencuccini, M.; Sterck, F.; Herrero, A.; Korhonen, J.F.J.; Llorens, P.; Nikinmaa, E.; Nolè, A.; Poyatos, R.; Ripullone, F.; Sass-Klaassen, U.; Zweifel, R., 2009: Hydraulic adjustment of Scots pine across Europe. New Phytologist, 184, 2: 353-364. doi: 10.1111/j.1469-8137.2009.02954.x
Eilmann, B.; Zweifel, R.; Buchmann, N.; Fonti, P.; Rigling, A., 2009: Drought-induced adaptation of the xylem in Scots pine and pubescent oak. Tree Physiology, 29, 8: 1011-1020. doi: 10.1093/treephys/tpp035
Zweifel, R.; Zeugin, F., 2008: Ultrasonic acoustic emissions in drought-stressed trees - more than signals from cavitation. New Phytologist, 179, 4: 1070-1079. doi: 10.1111/j.1469-8137.2008.02521.x
Sterck, F.J.; Zweifel, R.; Sass-Klaassen, U.; Chowdhury, Q., 2008: Persisting soil drought reduces leaf specific conductivity in Scots pine (Pinus sylvestris) and pubescent oak (Quercus pubescens). Tree Physiology, 28: 529-536. doi: 10.1093/treephys/28.4.529
Zweifel, R.; Steppe, K.; Sterck, F.J., 2007: Stomatal regulation by microclimate and tree water relations: interpreting ecophysiological field data with a hydraulic plant model. Journal of Experimental Botany, 58, 8: 2113-2131. doi: 10.1093/jxb/erm050
Zweifel, R.; Zimmermann, L.; Zeugin, F.; Newbery, D.M., 2006: Intra-annual radial growth and water relations of trees: implications towards a growth mechanism. Journal of Experimental Botany, 57, 6: 1445-1459. doi: 10.1093/jxb/erj125
Zweifel, R.; Zimmermann, L.; Newbery, D.M., 2005: Modeling tree water deficit from microclimate: an approach to quantifying drought stress. Tree Physiology, 25: 147-156. doi: 10.1093/treephys/25.2.147
Tinner, W.; Hofstetter, S.; Zeugin, F.; Conedera, M.; Wohlgemuth, T.; Zimmermann, L.; Zweifel, R., 2005: Long-distance transport of macroscopic charcoal by an intensive crown fire in the Swiss Alps - implications for fire history reconstruction. Holocene, 16, 2: 287-292. doi: 10.1191/0959683606hl925rr
Zweifel, R.; Böhm, J.P.; Häsler, R., 2002: Midday stomatal closure in Norway spruce - reactions in the upper and lower crown. Tree Physiology, 22, 15-16: 1125-1136. doi: 10.1093/treephys/22.15-16.1125
Zweifel, R.; Item, H.; Häsler, R., 2001: Link between diurnal stem radius changes and tree water relations. Tree Physiology, 21, 12-13: 869-877. doi: 10.1093/treephys/21.12-13.869
Zweifel, R.; Häsler, R., 2001: Dynamics of water storage in mature subalpine Picea abies: temporal and spatial patterns of change in stem radius. Tree Physiology, 21, 9: 561-569. doi: 10.1093/treephys/21.9.561
Zweifel, R.; Häsler, R., 2000: Frost-induced reversible shrinkage of bark of mature subalpine conifers. Agricultural and Forest Meteorology, 102: 213-222. doi: 10.1016/S0168-1923(00)00135-0
Zweifel, R.; Item, H.; Häsler, R., 2000: Stem radius changes and their relation to stored water in stems of young Norway spruce trees. Trees: Structure and Function, 15, 1: 50-57. doi: 10.1007/s004680000072
Herzog, K.M.; Thum, R.; Zweifel, R.; Häsler, R., 1997: Heat balance measurements - to quantify sap flow in thin stems only?. Agricultural and Forest Meteorology, 83, 1-2: 75-94. doi: 10.1016/S0168-1923(96)02355-6
Weitere wissenschaftliche Publikationen
Walthert, L.; Ganthaler, A.; Mayr, S.; Saurer, M.; Waldner, P.; Walser, M.; Zweifel, R.; Von Arx, G., 2021: From the comfort zone to crown dieback: sequence of physiological stress thresholds in mature European beech trees across progressive drought. Science of the Total Environment, 753: 141792 (14 pp.). doi: 10.1016/j.scitotenv.2020.141792
Zweifel, R.; Ginzler, C.; Psomas, A.; Braun, S.; Walthert, L.; Etzold, S., 2020: Baumwasserdefizite erreichten im Sommer 2018. Höchstwerte – war das aus dem All erkennbar?. Schweizerische Zeitschrift für Forstwesen, 172, 5: 302-305.
Gharun, M.; Hörtnagl, L.; Paul-Limoges, E.; Ghiasi, S.; Feigenwinter, I.; Burri, S.; Marquardt, K.; Etzold, S.; Zweifel, R.; Eugster, W.; Buchmann, N., 2020: Physiological response of Swiss ecosystems to 2018 drought across plant types and elevation. Philosophical Transactions of the Royal Society B: Biological Sciences, 375, 1810: 20190521 (10 pp.). doi: 10.1098/rstb.2019.0521
Zweifel, R.; Etzold, S.; Sterck, F.; Gessler, A.; Anfodillo, T.; Mencuccini, M.; Von Arx, G.; Lazzarin, M.; Haeni, M.; Feichtinger, L.; Meusburger, K.; Knuesel, S.; Walthert, L.; Salmon, Y.; Bose, A.K.; Schoenbeck, L.; Hug, C.; De Girardi, N.; Giuggiola, A.; ... Rigling, A., 2020: Determinants of legacy effects in pine trees - implications from an irrigation-stop experiment. New Phytologist, 227, 4: 1081-1096. doi: 10.1111/nph.16582
Barraclough, A.D.; Cusens, J.; Zweifel, R.; Leuzinger, S., 2020: Environmental drivers of stem radius change and heterogeneity of stem radial water storage in the mangrove Avicennia marina (Forssk.) Vierh.. Agricultural and Forest Meteorology, 280: 107764 (12 pp.). doi: 10.1016/j.agrformet.2019.107764
Burri, S.; Haeler, E.; Eugster, W.; Haeni, M.; Etzold, S.; Walthert, L.; Braun, S.; Zweifel, R., 2019: How did Swiss forest trees respond to the hot summer 2015?. Erde, 150, 4: 214-229. doi: 10.12854/erde-2019-420
Rigling, A.; Etzold, S.; Bebi, P.; Brang, P.; Ferretti, M.; Forrester, D.; Gärtner, H.; Gessler, A.; Ginzler, C.; Moser, B.; Schaub, M.; Stroheker, S.; Trotsiuk, V.; Walthert, L.; Zweifel, R.; Wohlgemuth, T., 2019: Wie viel Trockenheit ertragen unsere Wälder? Lehren aus extremen Trockenjahren. In: Bründl, M.; Schweizer, J. (eds), 2019: Lernen aus Extremereignissen. Forum für Wissen 2019: Lernen aus Extremereignissen, Davos, Switzerland. 39-51.
Donnellan Barraclough, A.; Zweifel, R.; Cusens, J.; Leuzinger, S., 2019: Disentangling the net: concomitant xylem and over-bark size measurements reveal the phloem-generated turgor signal behind daytime stem swelling in the mangrove Avicennia marina. Functional Plant Biology, 46, 5: 393-406. doi: 10.1071/FP18155
Knüsel, S.; Conedera, M.; Zweifel, R.; Bugmann, H.; Etzold, S.; Wunder, J., 2018: High growth potential of Ailanthus altissima in warm and dry weather conditions in novel forests of southern Switzerland. Trees: Structure and Function, 33, 2: 395-409. doi: 10.1007/s00468-018-1785-x
Grossiord, C.; Sevanto, S.; Limousin, J.; Meir, P.; Mencuccini, M.; Pangle, R.E.; Pockman, W.T.; Salmon, Y.; Zweifel, R.; McDowell, N.G., 2018: Manipulative experiments demonstrate how long-term soil moisture changes alter controls of plant water use. Environmental and Experimental Botany, 152: 19-27. doi: 10.1016/j.envexpbot.2017.12.010
Lazzarin, M.; Zweifel, R.; Anten, N.; Sterck, F.J., 2018: Does phloem osmolality affect diurnal diameter changes of twigs but not of stems in Scots pine?. Tree Physiology, 39, 2: 275-283. doi: 10.1093/treephys/tpy121
Donnellan Barraclough, A.; Zweifel, R.; Cusens, J.; Leuzinger, S., 2018: Daytime stem swelling and seasonal reversal in the peristaltic depletion of stored water along the stem of Avicennia marina (Forssk.) Vierh. Tree Physiology, 38, 7: 965-978. doi: 10.1093/treephys/tpy021
Dietrich, L.; Zweifel, R.; Kahmen, A., 2018: Daily stem diameter variations can predict the canopy water status of mature temperate trees. Tree Physiology, 38, 7: 941-952. doi: 10.1093/treephys/tpy023
Giuggiola, A.; Zweifel, R.; Feichtinger, L.M.; Vollenweider, P.; Bugmann, H.; Haeni, M.; Rigling, A., 2018: Competition for water in a xeric forest ecosystem – Effects of understory removal on soil micro-climate, growth and physiology of dominant Scots pine trees. Forest Ecology and Management, 409: 241-249. doi: 10.1016/j.foreco.2017.11.002
Mencuccini, M.; Salmon, Y.; Mitchell, P.; Hölttä, T.; Choat, B.; Meir, P.; O'Grady, A.; Tissue, D.; Zweifel, R.; Sevanto, S.; Pfautsch, S., 2017: An empirical method that separates irreversible stem radial growth from bark water content changes in trees: theory and case studies. Plant, Cell and Environment, 40, 2: 290-303. doi: 10.1111/pce.12863
Von Arx, G.; Arzac, A.; Fonti, P.; Frank, D.; Zweifel, R.; Rigling, A.; Galiano, L.; Gessler, A.; Olano, J.M., 2017: Responses of sapwood ray parenchyma and non-structural carbohydrates of Pinus sylvestris to drought and long-term irrigation. Functional Ecology, 31, 7: 1371-1382. doi: 10.1111/1365-2435.12860
Haeni, M.; Zweifel, R.; Eugster, W.; Gessler, A.; Zielis, S.; Bernhofer, C.; Carrara, A.; Grünwald, T.; Havránková, K.; Heinesch, B.; Herbst, M.; Ibrom, A.; Knohl, A.; Lagergren, F.; Law, B.E.; Marek, M.; Matteucci, G.; McCaughey, J.H.; Minerbi, S.; ... Buchmann, N., 2017: Winter respiratory C losses provide explanatory power for net ecosystem productivity. Journal of Geophysical Research G: Biogeosciences, 122, 1: 243-260. doi: 10.1002/2016JG003455
Brinkmann, N.; Eugster, W.; Zweifel, R.; Buchmann, N.; Kahmen, A., 2016: Temperate tree species show identical response in tree water deficit but different sensitivities in sap flow to summer soil drying. Tree Physiology, 36, 12: 1508-1519. doi: 10.1093/treephys/tpw062
Zeiter, M.; Schärrer, S.; Zweifel, R.; Newbery, D.M.; Stampfli, A., 2016: Timing of extreme drought modifies reproductive output in semi-natural grassland. Journal of Vegetation Science, 27, 2: 238-248. doi: 10.1111/jvs.12362
Zweifel, R.; Haeni, M.; Buchmann, N.; Eugster, W., 2016: Are trees able to grow in periods of stem shrinkage?. New Phytologist, 211, 3: 839-849. doi: 10.1111/nph.13995
Zielis, S.; Etzold, S.; Zweifel, R.; Eugster, W.; Haeni, M.; Buchmann, N., 2014: NEP of a Swiss subalpine forest is significantly driven not only by current but also by previous year's weather. Biogeosciences, 11, 6: 1627-1635. doi: 10.5194/bg-11-1627-2014
Zweifel, R.; Drew, D.M.; Schweingruber, F.; Downes, G.M., 2014: Xylem as the main origin of stem radius changes in Eucalyptus. Functional Plant Biology, 41, 5: 520-534. doi: 10.1071/FP13240
Dawes, M.A.; Zweifel, R.; Dawes, N.; Rixen, C.; Hagedorn, F., 2014: CO2 enrichment alters diurnal stem radius fluctuations of 36-yr-old Larix decidua growing at the alpine tree line. New Phytologist, 202, 4: 1237-1248. doi: 10.1111/nph.12742
Etzold, S.; Zweifel, R.; Ruehr, N.K.; Eugster, W.; Buchmann, N., 2013: Long-term stem CO2 concentration measurements in Norway spruce in relation to biotic and abiotic factors. New Phytologist, 197, 4: 1173-1184. doi: 10.1111/nph.12115
Rigling, A.; Bigler, C.; Eilmann, B.; Feldmeyer-Christe, E.; Gimmi, U.; Ginzler, C.; Graf, U.; Mayer, P.; Vacchiano, G.; Weber, P.; Wohlgemuth, T.; Zweifel, R.; Dobbertin, M., 2013: Driving factors of a vegetation shift from Scots pine to pubescent oak in dry Alpine forests. Global Change Biology, 19, 1: 229-240. doi: 10.1111/gcb.12038
Zweifel, R.; Bangerter, S.; Rigling, A.; Sterck, F.J., 2012: Pine and mistletoes: how to live with a leak in the water flow and storage system?. Journal of Experimental Botany, 63, 7: 2565-2578. doi: 10.1093/jxb/err432
Slot, M.; Janse-ten Klooster, S.H.; Sterck, F.J.; Sass-Klaassen, U.; Zweifel, R., 2012: A lifetime perspective of biomass allocation in Quercus pubescens trees in a dry, alpine valley. Trees: Structure and Function, 26, 5: 1661-1668. doi: 10.1007/s00468-012-0717-4
Sterck, F.J.; Martínez-Vilalta, J.; Mencuccini, M.; Cochard, H.; Gerrits, P.; Zweifel, R.; Herrero, A.; Korhonen, J.F.J.; Llorens, P.; Nikinmaa, E.; Nolè, A.; Poyatos, R.; Ripullone, F.; Sass-Klaassen, U., 2012: Understanding trait interactions and their impacts on growth in Scots pine branches across Europe. Functional Ecology, 26, 2: 541-549. doi: 10.1111/j.1365-2435.2012.01963.x
Etzold, S.; Ruehr, N.K.; Zweifel, R.; Dobbertin, M.; Zingg, A.; Pluess, P.; Häsler, R.; Eugster, W.; Buchmann, N., 2011: The carbon balance of two contrasting mountain forest ecosystems in Switzerland: similar annual trends, but seasonal differences. Ecosystems, 14, 8: 1289-1309. doi: 10.1007/s10021-011-9481-3
Eilmann, B.; Zweifel, R.; Buchmann, N.; Graf Pannatier, E.; Rigling, A., 2011: Drought alters timing, quantity, and quality of wood formation in Scots pine. Journal of Experimental Botany, 62, 8: 2763-2771. doi: 10.1093/jxb/erq443
Zweifel, R.; Eugster, W.; Etzold, S.; Dobbertin, M.; Buchmann, N.; Häsler, R., 2010: Link between continuous stem radius changes and net ecosystem productivity of a subalpine Norway spruce forest in the Swiss Alps. New Phytologist, 187, 3: 819-830. doi: 10.1111/j.1469-8137.2010.03301.x
Zweifel, R.; Rigling, A.; Dobbertin, M., 2009: Species-specific stomatal response of trees to drought - a link to vegetaion dynamics?. Journal of Vegetation Science, 20, 3: 442-454. doi: 10.1111/j.1654-1103.2009.05701.x
Steppe, K.; Zeugin, F.; Zweifel, R., 2009: Low-decibel ultrasonic acoustic emissions are temperature-induced and probably have no biotic origin. New Phytologist, 183, 4: 928-931. doi: 10.1111/j.1469-8137.2009.02976.x
Martinéz-Vilalta, J.; Cochard, H.; Mencuccini, M.; Sterck, F.; Herrero, A.; Korhonen, J.F.J.; Llorens, P.; Nikinmaa, E.; Nolè, A.; Poyatos, R.; Ripullone, F.; Sass-Klaassen, U.; Zweifel, R., 2009: Hydraulic adjustment of Scots pine across Europe. New Phytologist, 184, 2: 353-364. doi: 10.1111/j.1469-8137.2009.02954.x
Eilmann, B.; Zweifel, R.; Buchmann, N.; Fonti, P.; Rigling, A., 2009: Drought-induced adaptation of the xylem in Scots pine and pubescent oak. Tree Physiology, 29, 8: 1011-1020. doi: 10.1093/treephys/tpp035
Zweifel, R.; Zeugin, F., 2008: Ultrasonic acoustic emissions in drought-stressed trees - more than signals from cavitation. New Phytologist, 179, 4: 1070-1079. doi: 10.1111/j.1469-8137.2008.02521.x
Sterck, F.J.; Zweifel, R.; Sass-Klaassen, U.; Chowdhury, Q., 2008: Persisting soil drought reduces leaf specific conductivity in Scots pine (Pinus sylvestris) and pubescent oak (Quercus pubescens). Tree Physiology, 28: 529-536. doi: 10.1093/treephys/28.4.529
Zweifel, R.; Steppe, K.; Sterck, F.J., 2007: Stomatal regulation by microclimate and tree water relations: interpreting ecophysiological field data with a hydraulic plant model. Journal of Experimental Botany, 58, 8: 2113-2131. doi: 10.1093/jxb/erm050
Zweifel, R.; Zimmermann, L.; Zeugin, F.; Newbery, D.M., 2006: Intra-annual radial growth and water relations of trees: implications towards a growth mechanism. Journal of Experimental Botany, 57, 6: 1445-1459. doi: 10.1093/jxb/erj125
Zweifel, R.; Zimmermann, L.; Newbery, D.M., 2005: Modeling tree water deficit from microclimate: an approach to quantifying drought stress. Tree Physiology, 25: 147-156. doi: 10.1093/treephys/25.2.147
Tinner, W.; Hofstetter, S.; Zeugin, F.; Conedera, M.; Wohlgemuth, T.; Zimmermann, L.; Zweifel, R., 2005: Long-distance transport of macroscopic charcoal by an intensive crown fire in the Swiss Alps - implications for fire history reconstruction. Holocene, 16, 2: 287-292. doi: 10.1191/0959683606hl925rr
Zweifel, R.; Böhm, J.P.; Häsler, R., 2002: Midday stomatal closure in Norway spruce - reactions in the upper and lower crown. Tree Physiology, 22, 15-16: 1125-1136. doi: 10.1093/treephys/22.15-16.1125
Zweifel, R.; Item, H.; Häsler, R., 2001: Link between diurnal stem radius changes and tree water relations. Tree Physiology, 21, 12-13: 869-877. doi: 10.1093/treephys/21.12-13.869
Zweifel, R.; Häsler, R., 2001: Dynamics of water storage in mature subalpine Picea abies: temporal and spatial patterns of change in stem radius. Tree Physiology, 21, 9: 561-569. doi: 10.1093/treephys/21.9.561
Zweifel, R.; Häsler, R., 2000: Frost-induced reversible shrinkage of bark of mature subalpine conifers. Agricultural and Forest Meteorology, 102: 213-222. doi: 10.1016/S0168-1923(00)00135-0
Zweifel, R.; Item, H.; Häsler, R., 2000: Stem radius changes and their relation to stored water in stems of young Norway spruce trees. Trees: Structure and Function, 15, 1: 50-57. doi: 10.1007/s004680000072
Herzog, K.M.; Thum, R.; Zweifel, R.; Häsler, R., 1997: Heat balance measurements - to quantify sap flow in thin stems only?. Agricultural and Forest Meteorology, 83, 1-2: 75-94. doi: 10.1016/S0168-1923(96)02355-6
Zeitschriften und Broschüren
Zweifel, R.; Etzold, S.; Walthert, L.; Köchli, R.; Eugster, W., 2020: TreeNet – wann wachsen unsere Bäume?. Wald und Holz, 101, 5: 20-23.
Zweifel, R.; Etzold, S.; Braun, S.; Köchli, R.; Hoch, G.; Eugster, W.; Walthert, L., 2020: TreeNet - am Puls der Bäume. Wald und Holz, 101: 31-33.
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.; 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) |