Gerhard Karrer
Ao.Univ.Prof.i.R. Mag.rer.nat. Dr.rer.nat. Gerhard Karrer
Institut Institute of Botany (BOT)
Standort Gregor-Mendel-Straße 33, 1180 Wien
Email gerhard.karrer@boku.ac.at
Tel: +43 1 47654-83119
Laufbahn
- 2005 - 2006 Visiting professor, University of Salzburg
- 2003 - 2004 Visiting Professor, University of Salzburg
- 2001 - 2002 Visiting professor, University of Salzburg
- 1997 - 1998 Visiting professor, University Salzburg
- 1996 - 2002 guest lecturer, "ecomorphology of plants", University of Vienna
- 1994 - 1995 Visiting professor, University Salzburg
- 1993 Habilitation, University of Agricultural Sciences, Vienna
- 1985 Doctoral degree, University of Vienna
Projekte
Es wurden 0 Projekte gefunden.
Publikationen
Wissentransfer in die Gesellschaft
Medienbeiträge
Vorträge
(2023) Viola-Spezialexkursion
Autoren: Nadler, K; Karrer, G; Fischer, M;
Ökofloristische Exkursionen des Vereins zur Erforschung der Flora Österreichs im Sommersemester 2023
(2022) Population genetics of the invasive Ambrosia psilostachya DC. In Europe
Autoren: Karrer, G; Hall, RM; Le Corre, V; Kropf, M
Tackling Ragweed: a multidisciplinary and international approach 2022 - RAGWEED: A SUCCESSFUL STORY
(2022) Ambrosia psilostachya DC. (Asteraceae): the almost unknown ragweed gaining ground
Autoren: Montagnani, C; Gentili, R; Karrer, G; Hall, RM; Le Corre, V; Kropf, M; Citterio, S
Tackling Ragweed: a multidisciplinary and international approach 2022 - RAGWEED: A SUCCESSFUL STORY
(2022) The arrival of Ambrosia psilostachya DC. in Europe – population genetic structuring and diversity
Autoren: Kropf, M; Hall, RM; Le Corre, V; Karrer, G
20. Österreichisches Botaniker:innentreffen 2022
(2020) Common ragweed (Ambrosia artemisiifolia L.) causes severe yield losses in different soybean varieties by reducing the infection potential of Bradyrhizobium japonicum
Autoren: Hall, R M; Wagentristl, H; Karrer, G; Winter, A; Czerny, R; Kaul, H-P
29. Deutsche Arbeitsbesprechung über Fragen der Unkrautbiologie und -bekämpfung
(2019) Regional adjustment of management options of common ragweed (Ambrosia artemisiifolia) along roadside verges in Bavaria
Autoren: Hall, R M; Karrer, G; Zant L, Aliabadi M
15th International Conference on Ecology and Management of Alien Plant Invasions, EMAPI 2019 Integrating research management and policy
(2019) Genetic variation of the invasive Ambrosia psilostachya in Europe is biased by clonal propagation
Autoren: Karrer, G; Hall, R M; Le Corre, V; Kropf, M
15th International Conference on Ecology and Management of Alien Plant Invasions, EMAPI 2019 Integrating research management and policy
(2019) Bye Bye Rhizobien: Wie Ragweed, Knöllchenbakterien verscheucht und infolge den Ertrag von Soja- und Käferbohne vermindert
Autoren: Hall RM, Wagentristl H, Karrer G, Winter A, Kaul H.-P
60. Österreichische Pflanzenschutztage 2019
(2019) Know your enemy: are biochemical substances the secret weapon of common ragweed (Ambrosia artemisiifolia) in the fierce competition with crops and native plant species?
Autoren: Hall, R M; Bein, H; Bein‐Lobmaier, B; Karrer, G; Kaul, H-P; Novak, J
15th International Conference on Ecology and Management of Alien Plant Invasions, EMAPI 2019 Integrating research management and policy
(2019) Clonal plants shape the vegetation structure of meadows under different degrees of abandonment
Autoren: Karrer, G
62nd Annual Symposium of the International Association for Vegetation Science: Vegetation Science and Biodiversity Research
(2019) JOINT AMBROSIA ACTION: Interreg‐Project V‐A Austria‐Hungary to fight common ragweed (Ambrosia artemisiifolia)
Autoren: Karrer, G; Zinggl, P; Szeiber, A; Vér, A
15th International Conference on Ecology and Management of Alien Plant Invasions, EMAPI 2019 Integrating research management and policy
(2018) Pollen and seed production potential of common ragweed (Ambrosia artemisiifolia L.) in different habitats - A mathematical approach to predict future contamination potential
Autoren: Hall, R.M.; Renner-Martin, K.; Rehrl, E.; Karrer, G.
ICA2018 - 11th International Congress on Aerobiology
(2018) Genetic variation of the invasive Ambrosia psilostachya in Europe
Autoren: Hall, RM; Karrer, G; Le Corre, V; Kropf, M
48th Annual Meeting of the Ecological Society of Germany, Austria and Switzerland GfÖ 2018 - Ecology – Meeting the Scientific Challenges of a complex World
(2018) Mapping ragweed presence in Europe using top-down and bottom-up approaches
Autoren: Skjøth, C.A.; Sun, Y.; Karrer, G.; Sikoparija, B; Smith, M; Schaffner, U; Müller-Schärer, H.
ICA2018 - 11th International Congress on Aerobiology
(2018) A fine-tuned mowing regime is evident in the eradication of common ragweed (Ambrosia artemisiifolia L.) along roadside verges
Autoren: Karrer, G.; Milakovic, I.; Leitsch-Vitalos, M.; Hall, R.M.; Fiedler, K.
ICA2018 - 11th International Congress on Aerobiology
(2018) High seed density is more effective than limiting similarity in controlling grassland resistance against invasive alien plants
Autoren: Kollmann J, Yanelli FH, Karrer G, Hall RM, Heger T
48th Annual Meeting of the Ecological Society of Germany, Austria and Switzerland GfÖ 2018 - Ecology – Meeting the Scientific Challenges of a complex World
(2017) Homogenization of species rich meadows by nature conservation management rules
Autoren: Karrer, G; Koessl, J.
60th IAVS Annual Symposium, Palermo 2017 - Vegetation patterns in natural and cultural landscapes
(2016) Estimation of seed longevity in artificial soil seed banks of common ragweed (Ambrosia artemisiifolia)
Autoren: Karrer, G., Hall, R.M., Lener, F., Waldhäuser, N., Kazinczi, G., Kerepesi, I., Máté, S., Sölter, U., Starfinger, U., Verschwele, A., Mathiassen, S.K., Kudsk, P., Leskovsek, R., Simoncic, A.
NEOBIOTA 2016 - 9th International Conference on Biological Invasions
(2016) Distribution of common ragweed (Ambrosia artemisiifolia) in ESENIAS area
Autoren: Uludag, A., Vladimirov, V., Aksoy, N., Anastasiu, P., Economou, G., Gavriil, E., Konstantinovic, B., Rat, M., Karrer, G.
NEOBIOTA 2016 - 9th International Conference on Biological Invasions
(2016) Population Dynamics Variation in ragweed demography and modelling management impact
Autoren: Lommen, S., Hallmann, C., Jongejans, E., Karrer, G., Leitsch-Vitalos, M., Müller-Schärer, H., SMARTER, T.F.
COST FA1203 – SMARTER Sustainable management of Ambrosia artemisiifolia in Europe. Final Conference
(2016) Die Bestimmung von Gräsern auf Basis von digitalen Datenbankabfragen mit einer Mobile-App
Autoren: Schauer J., Karrer G.
17. Treffen der Österreichischen Botanikerinnen und Botaniker 2016
(2016) Estimation of seed longevity in artificial soil seed banks of common ragweed
Autoren: Karrer, G., Hall, R., Lener, F., Waldhäuser, N., Kazinczi, G., Kerepesi ,I., Máté, S., Sölter, U., Starfinger, U., Verschwele, A., Mathiassen,S.K., Kudsk, P., Leskovsek, R., Simoncic ,A
COST FA1203 – SMARTER Sustainable management of Ambrosia artemisiifolia in Europe. Final Conference
(2016) The environment alters the immune response to ragweed pollen
Autoren: Liu, SH; Debiasi, M; Anea, CB; Karrer, G; Chaturvedi, P; Bellaire, A; Weckwerth, W; Epstein, MM
Meeting of the European Academy of Allergy and Clinical Immunology 2016
(2016) What is the most efficient efficacy measure of non-chemical control of com-mon ragweed
Autoren: Biological Invasions: Interactions with Environmental Change. Book of abstracts. NEOBIOTA 2016 - 9th International Conference on Biological Invasions
NEOBIOTA 2016 - 9th International Conference on Biological Invasions
(2016) What is the most efficient efficacy measure of non-chemical control of common ragweed
Autoren: Karrer, G., Milakovic, I.
COST FA1203 – SMARTER Sustainable management of Ambrosia artemisiifolia in Europe. Final Conference
(2016) Ecological Indicator Values of Europe (EIVE) 1.0: a powerful open-access tool for vegetation scientists
Autoren: Dengler, J., Hüllbusch, E., Bita-Nicolae, C., Chytrý, M., Didukh, J. P., Diekmann, M., Dierschke, H., Englisch, T., Ermakov, N., Feldhaar, H., Fosaa, A. M., Frank, D., Gillet, F., Guarino, R., Hennekens, S. M., Hill, M. O., Jelaska, S. D., Jíménez-Alfaro, B., Julve, P., Kącki, Z., Karrer, G., Nobis, M. P., Ozinga, W. A., Pignatti, S., Raus, T., Řezníčková, M., Ruprecht, E., Šilc, U., Steinbauer, M. J., Theurillat, J.-P., Tichý, L., Jansen, F.
European Vegetation Survey 25th Meeting
(2016) Cross-fertilizing weed science and invasion science: Ambrosia artemisiifolia as an ideal bridge species
Autoren: Müller-Schärer, H., Chauvel, B., Karrer, G., Kazinczi, G., Kudsk, P., Oude Lansink, A., Schaffner, U., Skjoth, C., Smith, M., Vurro, M., de Weger, L., Sun, Y., Lommen, S.
NEOBIOTA 2016 - 9th International Conference on Biological Invasions
(2016) Germination and seed viability of common ragweed (Ambrosia artemisiifolia L.) influenced by seed dimensions, origin and age
Autoren: Hall, R.M., Karrer, G.
EOBIOTA 2016 - 9th International Conference on Biological Invasions
(2016) Plant associated bacteria to reduce the growth of Ambrosia artemisiifolia
Autoren: Trognitz, F., Widhalm, S., Karrer G., Sessitsch, A.
COST FA1203 – SMARTER Sustainable management of Ambrosia artemisiifolia in Europe. Final Conference
(2016) Successful control of an invasive plant by optimized mowing regime
Autoren: Karrer, G.
29th Conference of the plant population biology section of the ecological Society of Germany, Austria and Switzerland (GfÖ)
(2016) Biotic resistance to invasive alien plant: Using a multi-trait approach to design resistant communities
Autoren: Yannelli F.A., Hall R., Karrer G., Heger T
COST FA1203 – SMARTER Sustainable management of Ambrosia artemisiifolia in Europe. Final Conference
(2016) The environment alters the immune response to ragweed pollen
Autoren: Liu, SH; Debiasi, M; Anea, CB; Karrer, G; Chaturvedi, P; Bellaire, A; Weckwerth, W; Epstein, MM
International Congress of Immunology (ICI)
(2015) Population genetics and invasion dynamics of Ragweed in Austria (& circumjacent Europe)
Autoren: Kropf, M., C. Blöch, M. Leitsch-Vitalos, A. Huppenberger, G. Karrer
Meeting of the "Task Force Genetics" of the SMARTER Cost Action FA1203
(2015) The role of clonality under different degrees of meadow abandonment in a long-time experiment
Autoren: Karrer, G.
CLONE 2015, 11TH CLOnAL PLAnT WORKSHOP 4-7 August 2015
(2014) Seed survival and germinability of Ambrosia artemisiifolia L. seed samples from Europe
Autoren: Karrer, G., Kazinczi, G., Waldhaeuser, N., Starfinger, U., Söltner, S., Mathiassen, U.
4th International Symposium on Environmental Weeds and lnvasive Plants. Abstracts. May 19 to 23, 2014. Montpellier SupAgro, Montpellier, France. p 167.
(2014) Testing allergenicity of Ambrosia artemisiifolia pollen in mice
Autoren: Epstein, M., Debiasi, M., Anea, C., Karrer, G.
Third International Radweed Conference: Ambrosia day, 2014 - Ragweeed allergy: 15 years of prevention
(2014) Population genetics on Ambrosia genus: past, present and future
Autoren: Causse, R; Chauvel, B; Délye, C; Karrer, G; Kolseth, A-K; Kropf, M; Le Corre, V; Meimberg, H; Scalone, R; Taller, J
4th International Symposium on Environmental Weeds and lnvasive Plants
(2014) Ophraella communa – ein natürlicher Gegenspieler der Ambrosia
Autoren: Follak, S., Essl, F. Karrer, G.
Österreichische Pflanzenschutztage 2014
(2014) Einfluss von Mist- und Gülledüngung auf wichtige Bodenparameter im Dauergrünland
Autoren: Angeringer, W; Starz, W; Pfister, R; Rohrer, H; Karrer, G.
Fachtagung für biologische Landwirtschaft 2014
(2014) Recommendations to fight ragweed derived from the EU-project HALT AMBROSIA.
Autoren: Karrer, G., Starfinger, U., Kazinczi, G., Kudsk P., Simoncic, A., Milakovic, I., Söltner, U., Verschwele, A., Mathiassen S., Basky, Z, Kömives, T., Leskovsek, R.
4th International Symposium on Environmental Weeds and lnvasive Plants
(2014) The role of common ragweed (Ambrosia artemisiifolia L.) as test plant in allelopathic research
Autoren: Kazinczi, G., Basky, Z, Kömives, T., Starfinger, U., Verschwele, A., Soeltner, U., Karrer, G., Kudsk, P., Simoncic, A.
First Africa-International Allelopathy Congress
(2014) Can the Invasion of Common Ragweed be Halted? New Insights from an International Project
Autoren: Starfinger, U.; Karrer, G.; Söltner, U.; Verschwele, A.; Milakovic, I.; Kazinczi, G.; Basky, Z; Kömives, T.; Kudsk, P.; Mathiassen, S.; Simoncic, A.; Leskovsek, R.
8th Internat. Conference on Biological Invasion, from understanding to action
(2013) Mechanical control of marsh ragwort (Senecio aquaticus Hill) by cutting
Autoren: Bassler, G., Karrer, G., Kriechbaum, M.
17th Symposium of the European Grassland Federation 2013 - The Role of Grasslands in a Green Future Threats and Perspectives in Less Favoured Areas
(2013) Österreichische Forstwirtschaft im Klimawandel: Suche nach trockenheitsangepasstem forstlichen Vermehrungsgut
Autoren: Bassler, G., Karrer, G., Willner, W.
14. Klimatag 2013 - Klimawandel, Auswirkungen und Anpassung sowie Vermeidung
(2013) Mechanical control of marsh ragwort (Senecio aquaticus Hill) by cutting
Autoren: Bassler, G., Karrer, G., Kriechbaum, M.
17th Symposium of the European Grassland Federation 2013 - The Role of Grasslands in a Green Future Threats and Perspectives in Less Favoured Areas
(2013) Nutzungsgrenzen montaner Heuwiesen - Ergebnisse eines 3-jährigen on-farm-Feldversuches im obersteirischen Pölstal
Autoren: Angeringer W., Starz W., Pfister R., Rohrer H., Karrer G.
Fachtagung für biologische Landwirtschaft 2013
(2013) Plant population dynamics in mountainous meadows against the backround of climate change and altered management
Autoren: Karrer, G., Bassler, G., Angeringer, W., Schaumberger. A., Formeyer, H.
26th Annual Conference of the Plant Population Biology Section of the Eciological Society of Germany, Austria and Switzerland (GfÖ)
(2012) Besiedlungsstrategie der Deutschen Tamariske (Myricaria germanica) an den neu geschaffenen Schotterbänken der Oberen drau
Autoren: Lener, F., Karrer, G.
15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012
(2012) Invasion dynamics of Ambrosia artemisiifolia in Austria: DNA microsatellite analyses indicate spreading of different genetic lineages
Autoren: Kropf, M., Blöch, C., Leitsch-Vitalos, M., Huppenberger, A., Karrer, G.
15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012
(2012) Ragweed in Austria: Problems and Regulations
Autoren: Karrer, G.
Colloque Européen des actuers et décideurs de la lute contre l’ambroisie Ambrosia 2012
(2012) The influence of quantity, quality and distances of seeds dispersed by different vectors on the dynamics of Ragweed invasion
Autoren: Karrer, G.
15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012
(2012) The contribution of post-harvest ripened ragweed seeds after cut for controll
Autoren: Karrer, G., Pixner, T., Milakovic, I.
15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012
(2012) Does the species composition in mountainous meadows react more to altered management or to climate change?
Autoren: Karrer, G., Bassler, G., Angeringer, W., Schaumberger, A. Formayer, H.
15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012
(2012) Bestandesregulierung von Senecio aquaticus in naturschutzfachlich interessanten Wiesen
Autoren: Bassler, G., Karrer, G., Kriechbaum, M.
15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012
(2011) Dynamics of biomass production in extensively managed meadows at the eastern edge of the Alps
Autoren: Karrer, G.
16th Sysposium of the European Grassland Federation 2011 - Grassland Farming and Land Management Systems in Mountainous Regions
(2011) Optimization of cutting regimes for control of ragweed along roadsides.
Autoren: Milakovic, I., Karrer, G.
3rd International Symposium on Weeds and Invasive Plants
(2011) Vegetation change of mountainous hay meadows to intensified management regime in organic faming
Autoren: Angeringer, W., Starz, W., Pfister, R., Rohrer, H. Karrer, G.
16th Sysposium of the European Grassland Federation 2011 - Grassland Farming and Land Management Systems in Mountainous Regions
(2011) Competitive suppression of common ragweed in early successional stages of revegetation.
Autoren: Milakovic, I., Karrer, G.
3rd International Symposium on Weeds and Invasive Plants
(2011) Ausgangssituation und Projektstruktur: Ragweed - Ausbreitungsbiologie und Management einer extrem allergenen, einge- schleppten Pflanze – Wege und Ursachen der Ausbreitung von Ragweed (Ambrosia artemisiifolia) sowie Möglichkeiten seiner Bekämpfung
Autoren: Karrer, G.
Ragweed, eine invasive Pflanze mit allergenem Potential2011 - Wege und Ursachen der Ausbreitung von Ragweed sowie Möglichkeiten der Bekämpfung
(2011) Change of plant species composition in mountainous meadows against the background of climate change and altered management
Autoren: Bassler, G., Angeringer, W., Karrer, G.
16th Sysposium of the European Grassland Federation 2011 - Grassland Farming and Land Management Systems in Mountainous Regions
(2011) Ragweed-Fighting in Europe
Autoren: Karrer, G.
Kick off meeting ATOPICA 2011 - atopic diseases in changing climate, land use and air quality
(2011) Are changes of plant species composition in mountainous meadows correlated rather to altered management than to climate change?
Autoren: Karrer, G., Bassler, G., Angeringer, W., Schaumberger, A., Formayer, H.
12. Österreichischer Klimatag 2011 - Forschung zu Klima, Klimawandel und Auswirkungen in Österreich
(2011) Ragweed im Bereich der Transportwege (insbesondere Strassen)
Autoren: Ivana Milakovic, Gerhard Karrer
Ragweed, eine invasive Pflanze mit allergenem Potential2011 - Wege und Ursachen der Ausbreitung von Ragweed sowie Möglichkeiten der Bekämpfung
(2011) Aussehen, Verwechslungsmöglichkeiten, Lebenszyklus, Biologie
Autoren: Karrer, G.
Ragweed, eine invasive Pflanze mit allergenem Potential2011 - Wege und Ursachen der Ausbreitung von Ragweed sowie Möglichkeiten der Bekämpfung
(2011) Growth and reproductive traits as a basis for the development of management strategies of the invasive Ambrosia artemisiifolia L.
Autoren: MILAKOVIC, I., KARRER, G.
11th International Conference on the Ecology and Management of Alien Plant Invasions EMAPI 2011 - Bridging the gap between scientific knowledge and management practice
(2011) Population biology of the toxic grassland weed Colchicum autumnale
Autoren: Winter, S., Karrer, G., Kriechbaum, M.
Plant Population Biology 2011
(2011) Zusammenfassung der Vorträge und Ausblick auf Bekämpfungsstrategien
Autoren: Karrer, G.
Ragweed, eine invasive Pflanze mit allergenem Potential2011 - Wege und Ursachen der Ausbreitung von Ragweed sowie Möglichkeiten der Bekämpfung
(2011) Populationsgenetik und Ausbreitungsdynamik in Österreich und Europa
Autoren: Kropf, M., Blöch, C., Leitsch-Vitalos, M., Huppenberger, A., Karrer, G.
Ragweed, eine invasive Pflanze mit allergenem Potential2011 - Wege und Ursachen der Ausbreitung von Ragweed sowie Möglichkeiten der Bekämpfung
(2010) Influence of competing vegetation and the cutting regime on the population density and flowering characteristics of Ambrosia artemisiifolia L.
Autoren: Milakovic, I. Karrer, G.
15th European Weed Research Society EWRS Symposium 2010
(2010) Ansätze zur Bekämpfung von Ragweed und zur Verhinderung der weiteren Ausbreitung: Überblick und Beispiele aus dem aktuellen BBK-Projekt Ragweed
Autoren: Milakovic, I., Leitsch Vitalos, M., Karrer, G.
Allergiekraut Ragweed - Information und Maßnahmenentwicklung
(2010) Directional spread of Ambrosia artemisiifolia L. along waterways - Can source and sink populations be detected by AFLP analysis
Autoren: Dlugosch, A., Kropf, M., Karrer, G., Leitsch-Vitalos, M.
23rd Plant Population Biology 2010 - Crossing Broders
(2010) Influence of the timing and frequency of cutting and of the population density on the morphometric characteristics and reproductive success of Ambrosia artemisiifolia L.
Autoren: Milakovic, i., Karrer, G.
6th NEOBIOTA Conference 2010 - Biological invasions in a changing world from science to management
(2010) Agents for the spread of Ambrosia artemisiifolia L. in Europe
Autoren: Karrer, G., Milakovic, I., Leitsch-Vitalos, M.
15th European Weed Research Society EWRS Symposium 2010
(2010) Population density effects on growth traits and reproduction of Ambrosia artemisiifolia L.
Autoren: MILAKOVIC, I., KARRER, G.
23rd Plant Population Biology 2010 - Crossing Broders
(2010) Is it possible to define fine scale source and sink populations for directional spread of Ambrosia artemisiifolia L. along waterways by AFLP-analysis?
Autoren: Karrer, G., Dlugosch, A., Kropf, M., Leitsch-Vitalos, M.
6th NEOBIOTA Conference 2010 - Biological invasions in a changing world from science to management
(2010) The fate of Senecio aquaticus seeds
Autoren: Bassler, G., Karrer, G., Kriechbaum, M.
23rd Plant Population Biology 2010 - Crossing Broders
(2009) Sowing of competing vegetation as a control measure for Ambrosia artemisiifolia L.
Autoren: Milakovic, I., Karrer, G.
International Congress on Biological Invasions 2009
(2009) Seed production and effective germination rates of plants from Middle European dry and nutrient poor grasslands with different degrees of abandonment
Autoren: Karrer, G., Morawetz, V.
22th Annual Conference of the Plant Population Section of the Ecological Society of Germany, Switzerland and Austria GfÖ 2009
(2009) Invasion history, distribution and dispersal processes of A. artemisiifolia in Europe
Autoren: Karrer, G.
Towards sustainable management of Ambrosia artemisiifolia in Europe 2009
(2009) The effect of different management strategies on the fitness of the invasive alien species Ambrosia artemisiifolia L.
Autoren: Milakovic, I., Leitsch Vitalos, M., Karrer, G.
22th Annual Conference of the Plant Population Section of the Ecological Society of Germany, Switzerland and Austria GfÖ 2009
(2009) Weed management by soil seed management - on the model of Ambrosia artemisiifolia L.
Autoren: Leitsch Vitalos, M., Milakovic, I., Karrer, G.
13th International Conference on Weed Biology 2009
(2008) Seed production and effective germination rates of plants from Middle European dry and nutrient poor grassland with different degree of abandonment
Autoren: Morawetz, V., Karrer, G.
21th Annual Conference of the Plant Population Section of the Ecological Society of Germany, Switzerland and Austria GfÖ 2008
(2008) Studies on spread, population biology and management of Ambrosia artemisiifolia L. in Austria
Autoren: Vitalos, M., Karrer. G.
1st international Ragweed Conference 2008
(2008) The contribution of bird seed, traffic and mowing machines to the spread of Ambrosia artemisiifolia
Autoren: Vitalos, M., Karrer, G.
5th European Conference on biological Invasions 2008 - Neobiota: Towards a synthesis
(2008) Plant functional traits and their role in meadow abandonment
Autoren: Karrer, G., Suessenbacher, Milakovic, I.
51st Symposium of the International Association for Vegetation Science 2008 - Frontiers of Vegetation Science, An Evolutionary Angle
(2008) Preserving Species Richness in Hay Meadows of Vienna's Nature Conservation Area Lainzer Tiergarten
Autoren: Angeringer, Wolfgang Karrer, Gerhard
International Symposium 2008 - Preservation of Biocultural Diversity - a Global Issue
(2008) Preserving species richness in hay meadows of Vienna’s nature conservation area Lainzer Tiergarten – possibilities and consequences of low-cost management practice
Autoren: Angeringer, W., Karrer, G.
International Symposium 2008 - Preservation of Biocultural Diversity - a Global Issue
(2008) Population biology and life history of the poisonous grassland plant Senecio aquaticus
Autoren: Bassler, G., Karrer, G.
21th Annual Conference of the Plant Population Section of the Ecological Society of Germany, Switzerland and Austria GfÖ 2008
(2008) Seed bank dynamics of Ambrosia artemisiifolia in Austria
Autoren: Vitalos, M., Karrer, G.
2nd International Symposium Intractable Weeds and Plant Invaders 2008
(2008) Morphometric characters serve as functional traits in the context of different degrees of abandonment in nutrient poor wet meadows (Molinietum)
Autoren: Milakovic. I., Karrer, G.
21th Annual Conference of the Plant Population Section of the Ecological Society of Germany, Switzerland and Austria GfÖ 2008
(2007) Ragweed – Gestalt und Ausbreitung der allergenen Pflanze Ambrosia artemisiifolia
Autoren: Karrer Gerhard
Ragweed - ein eingeschlepptes brisantes Gewächs
(2007) Plants as drivers for floristic changes in meadows under different degree of abandonnment
Autoren: Karrer, G.
49th Annual Conference of the International Association for Vegetation Science 2007
(2007) Das Projekt Ragweed – Konzept und erste Ergebnisse
Autoren: Karrer Gerhard
Ragweed - ein eingeschlepptes brisantes Gewächs
(2007) Plants as drivers for floristic changes in meadows under different degree of abandonnment
Autoren: Gerhard Karrer
49th Annual Conference of the International Association for Vegetation Science 2007
(2006) lnaccurate morphological analysis can cause misfit of morphologiical and molecular classification in the genus Gentiana L.
Autoren: Karrer, G., Davitashvili, N.
17th International Symposium Biodiversity and Evolutionary Biology of the German Botanical Society 2006
(2006) Gentiana cachemirica, a missing link between western Asian and central Asian gentians from sect. Pneumonanthe?
Autoren: Davitashvili, N., Karrer, G.
17th International Symposium Biodiversity and Evolutionary Biology of the German Botanical Society 2006
(2006) Seasonal development of aboveground organs in differently managed nutrient poor meadows dominated by clonal plants
Autoren: KARRER, G., STEINER, H., STALLEGGER, M.
8th clonal plant workshop 2006 - generality, specificity and diversity of clonal growth
(2005) SEM observations of seeds of gen. Gentiana L. and their systematic significance. Poster 1149
Autoren: Davitashvili, N., Karrer, G.
17th International Botanical Congress 2005
(2005) Plant architecture in Gentiana – a source for taxonomy and evolutionary biology
Autoren: Karrer, G., Davitashvili, N.
17th International Botanical Congress 2005
(2005) Plant architecture in Gentiana: a source for taxonomy and evolutionary biology
Autoren: Karrer, G., Davitashvili, N
17th International Botanical Congress 2005
(2005) SEM observations of seeds of gen. Gentiana L. and their systematic significance
Autoren: Davitashvili, N., Karrer, G.
17th International Botanical Congress 2005
(2004) Interdependenzen zwischen dem Naturschutzwert von Grünland-Ökosystemen und Bewirtschaftungsmaßnahmen sowie ausgewähltern sozioökonomischen Rahnmenbedingingen
Autoren: Lichtenecker, A., Bassler, G., Neuwirth, J., Grabner, S., Karrer, G., Wytrzens, H.K.
11. Österreichisches Botanikertreffen 2004
(2004) Influence of agri-environmental subsidies on management intensities and nature conservation values on grassland-fields – results of a case study in Austria
Autoren: Bassler, G., Lichtenecker, A., Neuwirth, J., Karrer, G.
2nd Interdisciplinary Mountain Research Young Scientists Conference 2004
(2004) Auswirkungen der Einstellung der Weidenutzung Ende des 19. Jahrhunderts im nordwestlichen Waldviertel
Autoren: Bassler, G., Karrer, G.
Landschaft im Wandel - Offenhalten der Landschaft
(2004) Untersuchungen zum Diasporenregen in mageren Wiesentypen des Lainzer Tiergartens
Autoren: Rosei, G., Karrer, G.
11. Österreichisches Botanikertreffen 2004
(2004) Zur Methodik der naturschutzfachlichen Bewertung von Grünland auf regionalem Niveau.
Autoren: Bassler, G., Lichtenecker, A., Karrer, G.
11. Österreichisches Botanikertreffen 2004
(2004) Ecological classification of the grassland vegetation of the class Molinio-Arrhenatheretea in Northwest Croatia
Autoren: Stancic, Z., Karrer, G.
1st Croatian Botanical Symposium with international participation 2004
(2004) Trends in plant species traits during succession of abandoned meadows nearby Vienna, Austria.
Autoren: Karrer, G.
47th Annual Symposium International Association of Vegetation Science, Landscape Change and Ecosystem Disturbance 2004 - Islands and Continents
(2004) Rezente Änderungen der Grünlandnutzung und ihre Auswirkungen auf den Naturschutzwert am Beispiel des Niederösterreichischen Waldviertels
Autoren: Lichtenecker, A., Bassler, G., Karrer, G.
Landschaft im Wandel - Offenhalten der Landschaft
(2004) Ecological classification of the grassland vegetation of the class Molinio-Arrhenatheretea in Nortwest Croatia
Autoren: Stancic, Z., Karrer, G.
1st Croatian Botanical Symposium with international participation 2004
(2003) Analysis of vegetation structure in the Natural Forest Reserve GAISBERG (Austria)
Autoren: Steiner, H., Karrer, G.
International Conference in Mukachevo (Ukraine), Natural Forests in the Temperate Zone of Europe. Values and Utilisation
(2003) Utilisation of spatiotemporal gaps in meadows by different types of clonal growth
Autoren: Karrer, G., Steiner, H.
7th Clonal Plant Workshop 2003
(2003) Problems of syntaxonomical classification of nutrient rich grassland after intensified utilisation – Do we need a red book for old concepts?
Autoren: Karrer, G., Lichtenecker, A., Bassler, G.
46th Symposium of the International Association for Vegetation Science 2003
(2003) Nature conservation services provided by mountainous grassland aereas and their measurement
Autoren: Neuwirth, J., Hambrusch, J., Wytrzens, H.K., Bassler, G., Lichtenecker, A., Karrer, G.
EU-Enlargement - Chances and Risks for the Rural Area 2009
(2003) Differences in species composition of seed rain, soil seed bank and actual vegetation in grasslands nearby Vienna and consequences for ecosystem management
Autoren: Karrer, G., Tüchler, A., Rosei, G.
Programm and Book of Abstracts, POP2003, Allocation, Plasticity and Allometry, 16th Annual Meeting Plant Population Biology Section
(2003) Gentiana scabra Bunge and G. triflora Pall. (Gentianaceae) are monopodial gentians. – 16th Internat. Symposium Biodiversity and Evolutionary Biology (of the DBG),
Autoren: Davitashvili, N., Karrer, G.
16th International Symposium - Biodiversity and Evolutionary biology of the German Botanical Society (DBG), 17th International Senckenberg Conference 2003
(2002) On the importance of seed rain in extensively managed meadows nearby Vienna
Autoren: Karrer, G. Rosei, G., Beiser, A., Winkler, M., Kofler, K.
Metapopulation Dynamics and Landscape Fragmentation
(2001) Nitrogen and carbon cycling in montane grassland under different management regimes
Autoren: Watzka, G., Karrer, G., Wanek, W.
COST-Aktion
(2001) Seedling establishment in nutrient rich meadows in Lainzer Tiergarten
Autoren: Starzinger, U., Karrer, G.
14th Meeting of the Working Group 2001 - Evolution and Plasticity in Plant Populations
(2001) Is it possible to recover plant diversity in anthropogenous grassland by soil seed bank?
Autoren: Bing, S., Karrer, G.
14th Meeting of the Working Group 2001 - Evolution and Plasticity in Plant Populations
(2001) Assessment of life history traits for the management of rare and endangered Saxifraga species from Austria by detailed ecomorphological analysis
Autoren: Selinger, D., Karrer, G.
14th Meeting of the Working Group 2001 - Evolution and Plasticity in Plant Populations
(2001) Life history traits of Pimpinella saxifraga in a nutrient poor meadow nearby Vienna
Autoren: Tüchler, A., Karrer, G.
14th Meeting of the Working Group 2001 - Evolution and Plasticity in Plant Populations
(2001) The role of seed rain in nutrient poor meadows dominated by Nardus stricta
Autoren: Beiser, A., Karrer, G. Kofler, K.
14th Meeting of the Working Group 2001 - Evolution and Plasticity in Plant Populations
(2000) Acceleration of (clonal) growth and ageing in meadow plants by frequent cutting and optimal nutrient supply
Autoren: Karrer, G.
Clone 2000
(1989) Vegetationsökologische Untersuchungen im Gleingraben bei Knittelfeld (Steiermark). Ein Beitrag zur Waldschadensforschung in Österreich
Autoren: Karrer, G.
Atti del symposio della societa estalpino-dinarica di fitosociologia