Presentations

jump to year:  2016 |2015 |2014 |2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | pre-2007

2016

Hammerle A., Kitz F., Spielmann F., Gerdel K. and Wohlfahrt G. (2016) Carbon monoxide exchange and partitioning of a managed mountain meadow. EGU2016-6002. EGU 2016 General Assembly, 17-22 April 2016, Vienna, Austria

Scholz K., Hammerle A. and Wohlfahrt G. (2016) Long-term EC measurements over a pre-alpine lake. EGU2016-12128. EGU 2016 General Assembly, 17-22 April 2016, Vienna, Austria

Spielmann F., Kitz F. Hammerle A., Gerdel K. and Wohlfahrt G.
(2016) Sources and sinks of carbonyl sulfide in a mountain grassland and relationships to the carbon dioxide exchange. EGU2016-5498. EGU 2016 General Assembly, 17-22 April 2016, Vienna, Austria

Zhao P., Hammerle A. and Wohlfahrt G. (2016) The role of advection for CO2 exchange flux over a mountainous grassland in the Alps. EGU2016-7471. EGU 2016 General Assembly, 17-22 April 2016, Vienna, Austria

2015

Wohlfahrt G., Hammerle A., and Enrico Tomelleri (2015) On the additional information content of hyperspectral remote sensing data for estimating ecosystem carbon dioxde and energy exchange. EGU2015-7193. EGU 2015 General Assembly, 12-17 April 2015, Vienna, Austria

2014

Hörtnagl L., Bahn M., Barthel M., Eugster W., Klumpp K., Ladreiter-Knauss T., Merbold L., Wohlfahrt G., Buchmann N. (2014) Greenhouse gas fluxes over Central European grasslands, B32B-06. AGU fall meeting, 15‑19 December 2014, San Francisco, CA/USA.

141112_IMGI_MeOH_v02Wohlfahrt G. (2014) A bottom-up perspective of the net land methanol flux: synthesis of global eddy covariance flux measurements. IMGI Graduiertenseminar, 12 November 2014, Innsbruck, Austria.

Hammerle A., Calanca P., Themeßl M., Gobiet A., Wohlfahrt G. (2014) Future scenarios of soil water availability at managed grassland ecosystems in the Austrian Alps. TERENO International Conference 2014, Bonn, Germany, 29th September-2nd October 2014.

Tereno_140929_v03aWohlfahrt G., Bamberger I., Hammerle A., Hansel A., Hörtnagl L. (2014) More than just CO2: Multiple trace gas exchange measurements at a temperate mountain grassland. TERENO International Conference 2014, Bonn, Germany, 29th September-2nd October 2014.

Jud W., Hansel A., Wohlfahrt G., Tissier A. (2014) Nicotiana tabacum as model for ozone-plant surface reactions. Gordon Research Conference on Biogenic Hydrocarbons and the Atmosphere, Girona, Spain, 29th June-4th July 2014.

Wohlfahrt G., Galvagno M., Cremonese E., Morra di Cella U. (2014) On the role of advection for the net ecosystem carbon dioxide exchange of a subalpine grassland. 31st Conference on Agricultural and AMS_advection_v03Forest Meteorology, Portland/OR, USA, 12-15 May 2014. icon_star1 invited. View recorded presentation (external link).

EGU_2014_MeOH_v03Wohlfahrt G., Amelynck C., Ammann C., Arneth A., Bamberger I., Goldstein A., Hansel A., Heinesch B., Holst T., Hörtnagl L., Karl T., Neftel A., McKinney K., Munger W., Schade G., Schoon N. (2014) A bottom-up perspective of the net land methanol flux: synthesis of global eddy covariance flux measurements. EGU2014-2959, European Geophysical Union 2014 General Assembly, 27 April – 2 May 2014, Vienna, Austria.

EGU_2014_EcoBot_v01Tasser E., Wohlfahrt G. (2014) A mobile system for quantifying the spatial variability of the surface energy balance: design and application. EGU2014-8956, European Geophysical Union 2014 General Assembly, 27 April – 2 May 2014, Vienna, Austria.

Jasoni R., Arnone J., Fenstermaker L., Wohlfahrt G. (2014) Stimulation of Mojave Desert net ecosystem CO2 uptake after winter precipitation with the opposite effect after summer rains based on 7 years of flux data. EGU2014-12851, European Geophysical Union 2014 General Assembly, 27 April – 2 May 2014, Vienna, Austria.

2013

Pierce A., Obrist D., Moore C., Wohlfahrt G., Moosmüller H. (2013) Atmospheric mercury concentration measurements and eddy covariance flux measurements using cavity ring-down spectroscopy. The 11th International Conference on Mercury as a Global Pollutant, 28 July-2 August, 2013, Edinburgh, UK.
Folie 1

Hammerle A., Wohlfahrt G. (2013) Effects of future climate scenarios on soil water availability and the carbon balance of managed grassland ecosystems in Tyrol. IMGI seminar series, Institute of Meteorology, University of Innsbruck, 29 May 2013. icon_star1 invited PDF

Folie 1 Hörtnagl L., Wohlfahrt G. (2013) Latent and sensible heat fluxes, and CO2 fluxes at study site Monteschino. HydroAlp 2nd year meeting, 17 May 2013. PDF

 

presentation_egu_2013_wohlfahrt-1Wohlfahrt G., Hörtnagl L., Hammerle A., Gianelle D., Marcola B., Galvagno M., Cremonese E., Morra di Cella U. (2013) Tradeoffs between global warming and day length on the vegetation carbon uptake period . EGU General Assembly, 7-12 April 2013. PDF

presentation_egu_2013_galvagno-1Galvagno M., Wohlfahrt G., Cremonese E., Morra di Cella U. (2013) On the role of advection for the net exchange of carbon dioxide at a subalpine grassland in complex terrain. EGU General Assembly, 7-12 April 2013. PDF

MuW13_forWebWohlfahrt G. (2011) Effects of global changes on mountain ecosystems. Mountains Under Watch 2013, 20 – 21 February 2013, Bard, Italy. icon_star1 keynote lecture

MUW_2013_HammerleHammerle A., Calanca P., Themessl M., Gobiet A.,Wohlfahrt G. (2013) As simple as possible, but not simpler than that: An efficient soil water content model for broad ecological applications. Mountains Under Watch 2013, 20 – 21 February 2013, Bard, Italy.

2012

Wohlfahrt G., Hörtnagl L., Bamberger I., Hammerle A., Hansel A. (2012) More than just CO2: The carbon balance of a temperate mountain grassland, B43J-04. AGU fall meeting, 3‑7 December 2012, San Francisco, CA/USA. icon_star1 invited

Wohlfahrt G. (2012) Ökologische Stoffkreisläufe. Lehrgang für Nachhaltigkeit, Haus der Begegnung, Innsbruck, 30 November 2012, Innsbruck, Austria. icon_star1 invited

Wohlfahrt G. (2012) Can an energy balance model provide additional constraints on how to close the energy imbalance? IMGI Graduiertenseminar, 24 October 2012, Innsbruck, Austria. icon_star1 invited

Wohlfahrt G. (2012) Carbon, water and energy cycling in mountain terrestrial ecosystems. International School on Mountain Ecology and Global Change, 24-28 September 2012, Innsbruck, Austria. icon_star1 invited

Wohlfahrt G., Gobiet, A. Hammerle A., Haslwanter A., Hörtnagl L., Irschick C., Themeßl M. (2012) Off-season carbon dioxide exchange of a temperate mountain grassland in a warmer future climate. 13. Österreichischer Klimatag, 14-15 June 2012, Vienna, Austria.

EGU_2012_WohlfahrtWohlfahrt G., Gobiet, A. Hammerle A., Haslwanter A., Hörtnagl L., Irschick C., Themeßl M.(2012) Off-season carbon dioxide exchange of a temperate mountain grassland. European Geophysical Union 2012 General Assembly, 22 – 27 April 2012, Vienna, Austria. icon_star1 invited

EGU_2012_BambergerBamberger I., Hörtnagl L., Ruuskanen T.M., Schnitzhofer R., Müller M., Graus M., Karl T., Wohlfahrt G., Hansel A. (2012) Deposition of terpenes to vegetation – a paradigm shift towards bidirectional VOC exchange? European Geophysical Union 2012 General Assembly, 22 – 27 April 2012, Vienna, Austria.

Merbold L.M., Wohlfahrt G. (2012) Greenhouse gas emissions from grasslands: current knowledge and challenges. EGU2012-7140, European Geophysical Union 2011 General Assembly, 22–27 April 2012, Vienna, Austria.

Wohlfahrt G. (2012) Off-season carbon dioxide exchange of a temperate mountain grassland in a warmer future climate. Pan European Phenology (PEP725) Symposium on New Developments in Phenology, 26 April 2012, Vienna, Austria.

Wohlfahrt G. (2012) Off-season carbon dioxide exchange of a temperate mountain grassland in a warmer future climate. IMGI Graduiertenseminar Exchange Processes in Complex Terrain, 28 March 2012, Innsbruck, Austria. icon_star1 invited

Wohlfahrt G. (2012) Trace gas exchange from/to mountain grasslands. PLECO Seminar, University of Antwerpen, 2 March 2012, Antwerpen, Belgium. icon_star1 invited

2011

Estonia_2011_hoertnaglHörtnagl L., Bamberger I., Graus M., Ruuskanen T.M., Schnitzhofer R., Hansel A., Wohlfahrt G. (2011) BVOC fluxes over a temperate mountain grassland. MUSCATEN – Abba workshop: Biogenic VOC: emissions, aerosol formation, modelling. 19-21 October 2011, near Tartu, Estonia. icon_star1 invited

phenoALP_2011_wohlfahrtWohlfahrt G. (2011) Carbon, water and energy exchange in Alpine ecosystems. PhenoALP meeting, 12-14 October 2011, Aosta Valley, Italy. icon_star1 invited

klimatag_2011_wohlfahrtWohlfahrt G., Hammerle A., Bamberger I., Hansel A., Haslwanter A., Hörtnagl L. (2011) Breathing of the Biosphere. 12. Klimatag, 21-22 September 2011, Vienna.

SparklingScience_2011_IrschickIrschick C., Carli E., Eliskases C., Frischmann S., Fritsch U., Gobiet A., Haas H., Kapelari S., Norz J., Themeßl M., Zebisch M., Wohlfahrt G. (2011) GrassClim – Interaktive Effekte von Klimawandel und Bewirtschaftung auf den Ertrag und die Kohlendioxidsenken/quellenstärke von Grünland. SparklingScience Tagung 2011.

EGU_2011_WohlfahrtWohlfahrt G., Hörtnagl L., Hammerle A., Haslwanter A., Hansel A., Loreto F., Brilli Federico (2011) Leaf and ecosystem response of mountain grassland gas exchange to drought. EGU2011-1317, European Geophysical Union 2011 General Assembly, 4-8 May 2011, Vienna, Austria.

2010

Ruuskanen T.M., Müller M., Schnitzhofer R, Karl T., Graus M., Bamberger I., Hörtnagl L., Brilli F., Wohlfahrt G., Hansel A. (2010) VOC Emission and Deposition Eddy Covariance Fluxes above Grassland using PTR-TOF. A53C-0219, AGU fall meeting, 13-17 December 2010, San Francisco, CA/USA.

Wohlfahrt G., Hammerle A., Hörtnagl L., Irschick C., Haslwanter A. (2010) Trace gas fluxes from/to grassland: A decade of micrometeorological research at a hay meadow in the Stubai Valley/Austria. Invited oral presentation, 11 October 2010, ETH Zürich, Switzerland.

Wohlfahrt G., Irschick C., Thalinger B., Hörtnagl L., Obojes N., Hammerle A. (2010) Multiple constraints on grassland evapotranspiration: implications for closing the energy balance. EGU2010-4210, European Geophysical Union 2010 General Assembly, 2–7 May 2010, Vienna, Austria.

Wohlfahrt G., Pilloni S., Hörtnagl L., Hammerle A. (2010) Estimating carbon dioxide fluxes from temperate mountain grasslands using broad-band vegetation indices. COST action ES0903, 28-30 April 2010, Viote del Monte Bondone, Italy. icon_star1 invited

Wohlfahrt G., Hörtnagl L., Haslwanter A., Hammerle A. (2010) Effects of management on the net ecosystem CO2 exchange of grasslands. SINKS project 7, Expert workshop, 4-5 March 2010, Kolding, Denmark. icon_star1 invited

2009

Hammerle A., Haslwanter A., Hörtnagl L., Wohlfahrt G. (2009) The net ecosystem CO2, H2O and energy exchange of mountain grasslands: methodology, controls and modelling. Invited oral presentation, 07 December 2009, ETH Zürich, Switzerland

Noe S., Kimmel V., Jogiste K., Niinemets Ü., Wohlfahrt G. (2009) Ecosystem scale biosphere-atmosphere interactions of a hemiboreal mixed forest stand at Järvselja, Estonia. International workshop on Environmental Stress and Forest Ecosystem, 17-18 November 2009, Tallin, Estonia.

Wohlfahrt G., Hörtnagl L., Hammerle A. (2009) Grünland – Senke oder Quelle für Kohlendioxid: empirische Befunde und Modellanalysen. 4. Klimaseminar, LFZ Raumberg-Gumpenstein. 10 September 2009, Raumberg-Gumpenstein, Austria. icon_star1 invited

Wohlfahrt G. (2009) Why the grass is green. University of Georgia, Institute of Soil and Crop Sciences, 18 August 2009, Griffin/GA, USA. icon_star1 invited

Wohlfahrt G., Irschick C., Haslwanter A., Hammerle A. (2009) Regional variability of CO2, H2O and energy fluxes: a grassland case study in Tyrol/Austria. Transregional Collaborative Research Centre 32 International workshop, 8-10 June 2009, Aachen, Germany.

Wohlfahrt G. (2009) The contribution of agricultural and forest areas to the emission of reactive gases influencing air chemistry. Workshop for the promotion of a trans-alpine alliance on environment and forest research and innovation. 29 May 2009, S. Michele all’Adige, Italy. icon_star1 invited

Arnone J.A., Jasoni R.L., Larsen J.D., Fenstermaker L.F., Wohlfahrt G. and the DRI ET Team. Evapotranspiration from lowland native shrubland ecosystems in Nevada’s (USA) eastern Great Basin and its relationship to remotely sensed measures of vegetation. EGU2009-10643, European Geophysical Union 2009 General Assembly, 19–24 April 2009, Vienna, Austria.

Stoy P.C., Richardson A.D., Baldocchi D.D., Katul G.G., Mahecha M.D.., Reichstein M., Law B.E., Montagnani L., Wohlfahrt G., Williams M. (2009) Biosphere-atmosphere exchange of carbon dioxide in relation to climate: a cross-biome analysis at multiple time-scales. EGU2009-5504, European Geophysical Union 2009 General Assembly, 19–24 April 2009, Vienna, Austria.

Arnone J., Wohlfahrt G., Fenstermaker L., Jasoni R., Larsen J. (2009) Is the Mojave desert a carbon sink ? Association of American Geographers Annual Meeting, 22-27 March 2009, Las Vegas, NV/USA.

Fenstermaker L., Arnone J., Wohlfahrt G., Smith S., Newingham B., Jasoni R. (2009) Carbon sequestration and climate change in the Mojave Desert. Climate change and the Californian desert Conference, 27 February 2009, Joshua Tree, CA/USA.

Wohlfahrt G., Hoertnagl L., Bamberger I., Schnitzhofer R., Dunkel J., Hammerle A., Graus M., Hansel A. (2009) Stress induced BVOC exchange from grassland. VOCBAS science meeting, 14-17 January 2009, Taagepera, Estonia. icon_star1 invited

2008

Hammerle A., Williams M., Wohlfahrt G. (2008) Carbon storage potential of a temperate mountain grassland as affected by management: a combined experimental and modelling analysis. Invited oral presentation, 26 September, Edinburgh, UK.

Hammerle A., Wohlfahrt G.(2008) On using broad­band vegetation indices to infer the net ecosystem CO2 exchange or Is the saturation problem a problem for CO2 fluxes ? SpecNet Europe Meeting, 30 June­2 July 2008, Trento, Italy.

Haslwanter A., Hammerle A., Wohlfahrt G. (2008) Open- vs. closed-path eddy covariance measurements of the net ecosystem carbon dioxide and water vapour exchange: a long-term perspective. EGU2008-A-01151, European Geophysical Union 2008 General Assembly, 13–18 April 2008, Vienna, Austria.

Wohlfahrt G., Fenstermaker L., Arnone J. (2008) Large Annual Net Ecosystem CO2 Uptake of a Mojave Desert Ecosystem. EGU2008-A-01414, European Geophysical Union 2008 General Assembly, 13–18 April 2008, Vienna, Austria.

Hammerle A., Bahn M., Tappeiner U., Cernusca A., Wohlfahrt G. (2008) Carbon storage potential of a temperate mountain grassland as affected by management: a combined experimental and modeling analysis. EGU2008-A-01149, European Geophysical Union 2008 General Assembly, 13–18 April 2008, Vienna, Austria.

Wohlfahrt G., Hammerle A., Haslwanter A., Bahn M., Tappeiner U., Cernusca A. (2008) Die Auswirkungen von Wetter und Bewirtschaftung auf die saisonale und inter-anuelle Variabilität des Nettoökosystemkohlendioxidaustschs einer Mähwiese. 10.Österreichischer Klimatag, 13-14 March 2008, Vienna, Austria.

2007

Wohlfahrt G., Arnone J. (2007) Large Annual Net Ecosystem CO2 Uptake of a Mojave Desert Ecosystem. EGU2007-A-01266, European Geophysical Union 2007 General Assembly, 15–20 April 2007, Vienna, Austria.

Wohlfahrt G., Hammerle A., Haslwanter A., Bahn M., Tappeiner U., Cernusca A. (2007) Carbon Balance Tradeoffs for Mountain Grasslands: Influence of Cutting Frequency and Growing Season Length on the Net Ecosystem CO2 Exchange. EGU2007-A-01268, European Geophysical Union 2007 General Assembly, 15–20 April 2007, Vienna, Austria.

Wohlfahrt G., Arnone J. (2007) Large Annual Net Ecosystem CO2 Uptake of a Mojave Desert Ecosystem. EGU2007-A-01266, European Geophysical Union 2007 General Assembly, 15–20 April 2007, Vienna, Austria.

Hammerle A., Haslwanter A., Tappeiner U., Cernusca A., Wohlfahrt G. (2007) Energy Partitioning of a Mountain Meadow: Controls, seasonal and inter-annual Variability. EGU2007-A-01942, European Geophysical Union 2007 General Assembly, 15–20 April 2007, Vienna, Austria.

before 2007

Wohlfahrt G., Hammerle A., Haslwanter A., Bahn M., Tappeiner U., Cernusca A. (2006) Carbon balance tradeoffs for mountain grasslands: influence of cutting frequency and growing season length on the net ecosystem CO2 exchange. Symposium Mountain Ecology: Past, Present and Future, 20 October 2006, Innsbruck, Austria. icon_star1 invited

Wohlfahrt G. (2006) Measuring biosphere-atmosphere exchange processes using the eddy covariance method: Theory and application. Desert Research Institute, 14 August 2006, Reno NV, USA.  icon_star1 invited

Wohlfahrt G., Hammerle A., Haslwanter A., Bahn M., Tappeiner U., Cernusca A. (2006) Opposing influence of land use and altitude on the net ecosystem CO2 exchange of two mountain grasslands. 91st Ecological Society of America Annual Meeting, 6-11 August 2006, Memphis, USA.

Wohlfahrt G. and other CARBOMONT participants (2006) Biotic, abiotic and anthropogenic controls on the net ecosystem CO2 exchange of European mountain grasslands. EGU06-A-03025, European Geophysical Union 2006 General Assembly, 02–07 April 2006, Vienna, Austria.

Wohlfahrt G., Hammerle A., Haslwanter A., Bahn M., Cernusca A., Tappeiner U. (2006) Die Kohlendioxid-Senken/Quellenstärke Alpiner Graslandökosysteme und deren Beeinflussung durch Bewirtschaftungsmaßnahmen. 9.Österreichischer Klimatag, 16-17 March 2006, Vienna, Austria.

Wohlfahrt G., Bahn M., Haslwanter A., Drösler M., Cernusca A. (2005) Challenges to estimating nocturnal CO2 fluxes in terrestrial ecosystems using micrometeorological, ecophysiological and modelling techniques. 90th ESA Annual Meeting, Montreal, Canada, 6-12 August 2005. icon_star1 invited

Bahn M., Michaeler W., Mildner B., Bianchi K., Wohlfahrt G., Cernusca A. (2003) Plant photosynthetic light and nitrogen use in differently managed and abandoned European mountain grasslands. The 4th Conference on Biochemistry, Ecophysiology and Population Biology of Alpine and Polar Plants, 9 July 2003, Trins, Austria.

Wohlfahrt G., Bahn M., Newesely Ch., Sapinsky S., Tappeiner U., Cernusca A. (2001) Canopy structure versus physiology effects on net photosynthesis of mountain grasslands differing in land use. 3rd European Ecological Modelling Conference, 10-15 September 2001, Dubrovnik, Croatia.

Wohlfahrt G., Bahn M., Newesely Ch., Sapinsky S., Tappeiner U., Cernusca A. (2001) Canopy structure versus physiology effects on net photosynthesis of mountain grasslands differing in land use. 86th Annual meeting of the Ecological Society of America, 5-10 August 2001, Madison, USA.

Wohlfahrt G., Bahn M., Newesely Ch., Sapinsky S., Tappeiner U., Cernusca A. (2001) Canopy structure versus physiology effects on net photosynthesis of mountain grasslands differing in land use. 44th IAVS Symposium, 29 July-4 August 2001, Freising-Weinstephan, Germany.

Wohlfahrt G., Bahn M., Tappeiner U., Cernusca A. (1999) A model of whole plant gas exchange and its application to herbaceous plant species from differently managed mountain grassland ecosystems. Annual meeting of the North American Chapter of the ISEM, 7-12 August 1999, Spokane, USA.

Wohlfahrt G., Horak I., Bahn M., Tappeiner U., Cernusca A. (1997) Modelling carbon dioxide and water vapour gas exchange in context with land-use changes. Leaf model parameterisation. 1st European Ecological Modelling Conference, 16-19 September 1997, Pula, Croatia.