Gerhard Karrer

Lectures

• Year: 2023 -  Viola-Spezialexkursion

  Autoren: Nadler, K; Karrer, G; Fischer, M;

  Event: Ökofloristische Exkursionen des Vereins zur Erforschung der Flora Österreichs im Sommersemester 2023

• Year: 2022 -  Population genetics of the invasive Ambrosia psilostachya DC. In Europe

  Autoren: Karrer, G; Hall, RM; Le Corre, V; Kropf, M

  Event: Tackling Ragweed: a multidisciplinary and international approach 2022 - RAGWEED: A SUCCESSFUL STORY

• Year: 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

  Event: Tackling Ragweed: a multidisciplinary and international approach 2022 - RAGWEED: A SUCCESSFUL STORY

• Year: 2022 -  The arrival of Ambrosia psilostachya DC. in Europe – population genetic structuring and diversity

  Autoren: Kropf, M; Hall, RM; Le Corre, V; Karrer, G

  Event: 20. Österreichisches Botaniker:innentreffen 2022

• Year: 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

  Event: 29. Deutsche Arbeitsbesprechung über Fragen der Unkrautbiologie und -bekämpfung

• Year: 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

  Event: 15th International Conference on Ecology and Management of Alien Plant Invasions, EMAPI 2019 Integrating research management and policy

• Year: 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

  Event: 15th International Conference on Ecology and Management of Alien Plant Invasions, EMAPI 2019 Integrating research management and policy

• Year: 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

  Event: 60. Österreichische Pflanzenschutztage 2019

• Year: 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

  Event: 15th International Conference on Ecology and Management of Alien Plant Invasions, EMAPI 2019 Integrating research management and policy

• Year: 2019 -  Clonal plants shape the vegetation structure of meadows under different degrees of abandonment

  Autoren: Karrer, G

  Event: 62nd Annual Symposium of the International Association for Vegetation Science: Vegetation Science and Biodiversity Research

• Year: 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

  Event: 15th International Conference on Ecology and Management of Alien Plant Invasions, EMAPI 2019 Integrating research management and policy

• Year: 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.

  Event: ICA2018 - 11th International Congress on Aerobiology

• Year: 2018 -  Genetic variation of the invasive Ambrosia psilostachya in Europe

  Autoren: Hall, RM; Karrer, G; Le Corre, V; Kropf, M

  Event: 48th Annual Meeting of the Ecological Society of Germany, Austria and Switzerland GfÖ 2018 - Ecology – Meeting the Scientific Challenges of a complex World

• Year: 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.

  Event: ICA2018 - 11th International Congress on Aerobiology

• Year: 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.

  Event: ICA2018 - 11th International Congress on Aerobiology

• Year: 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

  Event: 48th Annual Meeting of the Ecological Society of Germany, Austria and Switzerland GfÖ 2018 - Ecology – Meeting the Scientific Challenges of a complex World

• Year: 2017 -  Homogenization of species rich meadows by nature conservation management rules

  Autoren: Karrer, G; Koessl, J.

  Event: 60th IAVS Annual Symposium, Palermo 2017 - Vegetation patterns in natural and cultural landscapes

• Year: 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.

  Event: NEOBIOTA 2016 - 9th International Conference on Biological Invasions

• Year: 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.

  Event: NEOBIOTA 2016 - 9th International Conference on Biological Invasions

• Year: 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.

  Event: COST FA1203 – SMARTER Sustainable management of Ambrosia artemisiifolia in Europe. Final Conference

• Year: 2016 -  Die Bestimmung von Gräsern auf Basis von digitalen Datenbankabfragen mit einer Mobile-App

  Autoren: Schauer J., Karrer G.

  Event: 17. Treffen der Österreichischen Botanikerinnen und Botaniker 2016

• Year: 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

  Event: COST FA1203 – SMARTER Sustainable management of Ambrosia artemisiifolia in Europe. Final Conference

• Year: 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

  Event: Meeting of the European Academy of Allergy and Clinical Immunology 2016

• Year: 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

  Event: NEOBIOTA 2016 - 9th International Conference on Biological Invasions

• Year: 2016 -  What is the most efficient efficacy measure of non-chemical control of common ragweed

  Autoren: Karrer, G., Milakovic, I.

  Event: COST FA1203 – SMARTER Sustainable management of Ambrosia artemisiifolia in Europe. Final Conference

• Year: 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.

  Event: European Vegetation Survey 25th Meeting

• Year: 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.

  Event: NEOBIOTA 2016 - 9th International Conference on Biological Invasions

• Year: 2016 -  Germination and seed viability of common ragweed (Ambrosia artemisiifolia L.) influenced by seed dimensions, origin and age

  Autoren: Hall, R.M., Karrer, G.

  Event: EOBIOTA 2016 - 9th International Conference on Biological Invasions

• Year: 2016 -  Plant associated bacteria to reduce the growth of Ambrosia artemisiifolia

  Autoren: Trognitz, F., Widhalm, S., Karrer G., Sessitsch, A.

  Event: COST FA1203 – SMARTER Sustainable management of Ambrosia artemisiifolia in Europe. Final Conference

• Year: 2016 -  Successful control of an invasive plant by optimized mowing regime

  Autoren: Karrer, G.

  Event: 29th Conference of the plant population biology section of the ecological Society of Germany, Austria and Switzerland (GfÖ)

• Year: 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

  Event: COST FA1203 – SMARTER Sustainable management of Ambrosia artemisiifolia in Europe. Final Conference

• Year: 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

  Event: International Congress of Immunology (ICI)

• Year: 2015 -  Population genetics and invasion dynamics of Ragweed in Austria (& circumjacent Europe)

  Autoren: Kropf, M., C. Blöch, M. Leitsch-Vitalos, A. Huppenberger, G. Karrer

  Event: Meeting of the "Task Force Genetics" of the SMARTER Cost Action FA1203

• Year: 2015 -  The role of clonality under different degrees of meadow abandonment in a long-time experiment

  Autoren: Karrer, G.

  Event: CLONE 2015, 11TH CLOnAL PLAnT WORKSHOP 4-7 August 2015

• Year: 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.

  Event: 4th International Symposium on Environmental Weeds and lnvasive Plants. Abstracts. May 19 to 23, 2014. Montpellier SupAgro, Montpellier, France. p 167.

• Year: 2014 -  Testing allergenicity of Ambrosia artemisiifolia pollen in mice

  Autoren: Epstein, M., Debiasi, M., Anea, C., Karrer, G.

  Event: Third International Radweed Conference: Ambrosia day, 2014 - Ragweeed allergy: 15 years of prevention

• Year: 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

  Event: 4th International Symposium on Environmental Weeds and lnvasive Plants

• Year: 2014 -  Ophraella communa – ein natürlicher Gegenspieler der Ambrosia

  Autoren: Follak, S., Essl, F. Karrer, G.

  Event: Österreichische Pflanzenschutztage 2014

• Year: 2014 -  Einfluss von Mist- und Gülledüngung auf wichtige Bodenparameter im Dauergrünland

  Autoren: Angeringer, W; Starz, W; Pfister, R; Rohrer, H; Karrer, G.

  Event: Fachtagung für biologische Landwirtschaft 2014

• Year: 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.

  Event: 4th International Symposium on Environmental Weeds and lnvasive Plants

• Year: 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.

  Event: First Africa-International Allelopathy Congress

• Year: 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.

  Event: 8th Internat. Conference on Biological Invasion, from understanding to action

• Year: 2013 -  Mechanical control of marsh ragwort (Senecio aquaticus Hill) by cutting

  Autoren: Bassler, G., Karrer, G., Kriechbaum, M.

  Event: 17th Symposium of the European Grassland Federation 2013 - The Role of Grasslands in a Green Future Threats and Perspectives in Less Favoured Areas

• Year: 2013 -  Österreichische Forstwirtschaft im Klimawandel: Suche nach trockenheitsangepasstem forstlichen Vermehrungsgut

  Autoren: Bassler, G., Karrer, G., Willner, W.

  Event: 14. Klimatag 2013 - Klimawandel, Auswirkungen und Anpassung sowie Vermeidung

• Year: 2013 -  Mechanical control of marsh ragwort (Senecio aquaticus Hill) by cutting

  Autoren: Bassler, G., Karrer, G., Kriechbaum, M.

  Event: 17th Symposium of the European Grassland Federation 2013 - The Role of Grasslands in a Green Future Threats and Perspectives in Less Favoured Areas

• Year: 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.

  Event: Fachtagung für biologische Landwirtschaft 2013

• Year: 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.

  Event: 26th Annual Conference of the Plant Population Biology Section of the Eciological Society of Germany, Austria and Switzerland (GfÖ)

• Year: 2012 -  Besiedlungsstrategie der Deutschen Tamariske (Myricaria germanica) an den neu geschaffenen Schotterbänken der Oberen drau

  Autoren: Lener, F., Karrer, G.

  Event: 15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012

• Year: 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.

  Event: 15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012

• Year: 2012 -  Ragweed in Austria: Problems and Regulations

  Autoren: Karrer, G.

  Event: Colloque Européen des actuers et décideurs de la lute contre l’ambroisie Ambrosia 2012

• Year: 2012 -  The influence of quantity, quality and distances of seeds dispersed by different vectors on the dynamics of Ragweed invasion

  Autoren: Karrer, G.

  Event: 15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012

• Year: 2012 -  The contribution of post-harvest ripened ragweed seeds after cut for controll

  Autoren: Karrer, G., Pixner, T., Milakovic, I.

  Event: 15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012

• Year: 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.

  Event: 15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012

• Year: 2012 -  Bestandesregulierung von Senecio aquaticus in naturschutzfachlich interessanten Wiesen

  Autoren: Bassler, G., Karrer, G., Kriechbaum, M.

  Event: 15. Treffen der Österreichischen Botanikerinnen und Botaniker 2012

• Year: 2011 -  Dynamics of biomass production in extensively managed meadows at the eastern edge of the Alps

  Autoren: Karrer, G.

  Event: 16th Sysposium of the European Grassland Federation 2011 - Grassland Farming and Land Management Systems in Mountainous Regions

• Year: 2011 -  Optimization of cutting regimes for control of ragweed along roadsides.

  Autoren: Milakovic, I., Karrer, G.

  Event: 3rd International Symposium on Weeds and Invasive Plants

• Year: 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.

  Event: 16th Sysposium of the European Grassland Federation 2011 - Grassland Farming and Land Management Systems in Mountainous Regions

• Year: 2011 -  Competitive suppression of common ragweed in early successional stages of revegetation.

  Autoren: Milakovic, I., Karrer, G.

  Event: 3rd International Symposium on Weeds and Invasive Plants

• Year: 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.

  Event: Ragweed, eine invasive Pflanze mit allergenem Potential2011 - Wege und Ursachen der Ausbreitung von Ragweed sowie Möglichkeiten der Bekämpfung

• Year: 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.

  Event: 16th Sysposium of the European Grassland Federation 2011 - Grassland Farming and Land Management Systems in Mountainous Regions

• Year: 2011 -  Ragweed-Fighting in Europe

  Autoren: Karrer, G.

  Event: Kick off meeting ATOPICA 2011 - atopic diseases in changing climate, land use and air quality

• Year: 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.

  Event: 12. Österreichischer Klimatag 2011 - Forschung zu Klima, Klimawandel und Auswirkungen in Österreich

• Year: 2011 -  Ragweed im Bereich der Transportwege (insbesondere Strassen)

  Autoren: Ivana Milakovic, Gerhard Karrer

  Event: Ragweed, eine invasive Pflanze mit allergenem Potential2011 - Wege und Ursachen der Ausbreitung von Ragweed sowie Möglichkeiten der Bekämpfung

• Year: 2011 -  Aussehen, Verwechslungsmöglichkeiten, Lebenszyklus, Biologie

  Autoren: Karrer, G.

  Event: Ragweed, eine invasive Pflanze mit allergenem Potential2011 - Wege und Ursachen der Ausbreitung von Ragweed sowie Möglichkeiten der Bekämpfung

• Year: 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.

  Event: 11th International Conference on the Ecology and Management of Alien Plant Invasions EMAPI 2011 - Bridging the gap between scientific knowledge and management practice

• Year: 2011 -  Population biology of the toxic grassland weed Colchicum autumnale

  Autoren: Winter, S., Karrer, G., Kriechbaum, M.

  Event: Plant Population Biology 2011

• Year: 2011 -  Zusammenfassung der Vorträge und Ausblick auf Bekämpfungsstrategien

  Autoren: Karrer, G.

  Event: Ragweed, eine invasive Pflanze mit allergenem Potential2011 - Wege und Ursachen der Ausbreitung von Ragweed sowie Möglichkeiten der Bekämpfung

• Year: 2011 -  Populationsgenetik und Ausbreitungsdynamik in Österreich und Europa

  Autoren: Kropf, M., Blöch, C., Leitsch-Vitalos, M., Huppenberger, A., Karrer, G.

  Event: Ragweed, eine invasive Pflanze mit allergenem Potential2011 - Wege und Ursachen der Ausbreitung von Ragweed sowie Möglichkeiten der Bekämpfung

• Year: 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.

  Event: 15th European Weed Research Society EWRS Symposium 2010

• Year: 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.

  Event: Allergiekraut Ragweed - Information und Maßnahmenentwicklung

• Year: 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.

  Event: 23rd Plant Population Biology 2010 - Crossing Broders

• Year: 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.

  Event: 6th NEOBIOTA Conference 2010 - Biological invasions in a changing world from science to management

• Year: 2010 -  Agents for the spread of Ambrosia artemisiifolia L. in Europe

  Autoren: Karrer, G., Milakovic, I., Leitsch-Vitalos, M.

  Event: 15th European Weed Research Society EWRS Symposium 2010

• Year: 2010 -  Population density effects on growth traits and reproduction of Ambrosia artemisiifolia L.

  Autoren: MILAKOVIC, I., KARRER, G.

  Event: 23rd Plant Population Biology 2010 - Crossing Broders

• Year: 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.

  Event: 6th NEOBIOTA Conference 2010 - Biological invasions in a changing world from science to management

• Year: 2010 -  The fate of Senecio aquaticus seeds

  Autoren: Bassler, G., Karrer, G., Kriechbaum, M.

  Event: 23rd Plant Population Biology 2010 - Crossing Broders

• Year: 2009 -  Sowing of competing vegetation as a control measure for Ambrosia artemisiifolia L.

  Autoren: Milakovic, I., Karrer, G.

  Event: International Congress on Biological Invasions 2009

• Year: 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.

  Event: 22th Annual Conference of the Plant Population Section of the Ecological Society of Germany, Switzerland and Austria GfÖ 2009

• Year: 2009 -  Invasion history, distribution and dispersal processes of A. artemisiifolia in Europe

  Autoren: Karrer, G.

  Event: Towards sustainable management of Ambrosia artemisiifolia in Europe 2009

• Year: 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.

  Event: 22th Annual Conference of the Plant Population Section of the Ecological Society of Germany, Switzerland and Austria GfÖ 2009

• Year: 2009 -  Weed management by soil seed management - on the model of Ambrosia artemisiifolia L.

  Autoren: Leitsch Vitalos, M., Milakovic, I., Karrer, G.

  Event: 13th International Conference on Weed Biology 2009

• Year: 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.

  Event: 21th Annual Conference of the Plant Population Section of the Ecological Society of Germany, Switzerland and Austria GfÖ 2008

• Year: 2008 -  Studies on spread, population biology and management of Ambrosia artemisiifolia L. in Austria

  Autoren: Vitalos, M., Karrer. G.

  Event: 1st international Ragweed Conference 2008

• Year: 2008 -  The contribution of bird seed, traffic and mowing machines to the spread of Ambrosia artemisiifolia

  Autoren: Vitalos, M., Karrer, G.

  Event: 5th European Conference on biological Invasions 2008 - Neobiota: Towards a synthesis

• Year: 2008 -  Plant functional traits and their role in meadow abandonment

  Autoren: Karrer, G., Suessenbacher, Milakovic, I.

  Event: 51st Symposium of the International Association for Vegetation Science 2008 - Frontiers of Vegetation Science, An Evolutionary Angle

• Year: 2008 -  Preserving Species Richness in Hay Meadows of Vienna's Nature Conservation Area Lainzer Tiergarten

  Autoren: Angeringer, Wolfgang Karrer, Gerhard

  Event: International Symposium 2008 - Preservation of Biocultural Diversity - a Global Issue

• Year: 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.

  Event: International Symposium 2008 - Preservation of Biocultural Diversity - a Global Issue

• Year: 2008 -  Population biology and life history of the poisonous grassland plant Senecio aquaticus

  Autoren: Bassler, G., Karrer, G.

  Event: 21th Annual Conference of the Plant Population Section of the Ecological Society of Germany, Switzerland and Austria GfÖ 2008

• Year: 2008 -  Seed bank dynamics of Ambrosia artemisiifolia in Austria

  Autoren: Vitalos, M., Karrer, G.

  Event: 2nd International Symposium Intractable Weeds and Plant Invaders 2008

• Year: 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.

  Event: 21th Annual Conference of the Plant Population Section of the Ecological Society of Germany, Switzerland and Austria GfÖ 2008

• Year: 2007 -  Ragweed – Gestalt und Ausbreitung der allergenen Pflanze Ambrosia artemisiifolia

  Autoren: Karrer Gerhard

  Event: Ragweed - ein eingeschlepptes brisantes Gewächs

• Year: 2007 -  Plants as drivers for floristic changes in meadows under different degree of abandonnment

  Autoren: Karrer, G.

  Event: 49th Annual Conference of the International Association for Vegetation Science 2007

• Year: 2007 -  Das Projekt Ragweed – Konzept und erste Ergebnisse

  Autoren: Karrer Gerhard

  Event: Ragweed - ein eingeschlepptes brisantes Gewächs

• Year: 2007 -  Plants as drivers for floristic changes in meadows under different degree of abandonnment

  Autoren: Gerhard Karrer

  Event: 49th Annual Conference of the International Association for Vegetation Science 2007

• Year: 2006 -  lnaccurate morphological analysis can cause misfit of morphologiical and molecular classification in the genus Gentiana L.

  Autoren: Karrer, G., Davitashvili, N.

  Event: 17th International Symposium Biodiversity and Evolutionary Biology of the German Botanical Society 2006

• Year: 2006 -  Gentiana cachemirica, a missing link between western Asian and central Asian gentians from sect. Pneumonanthe?

  Autoren: Davitashvili, N., Karrer, G.

  Event: 17th International Symposium Biodiversity and Evolutionary Biology of the German Botanical Society 2006

• Year: 2006 -  Seasonal development of aboveground organs in differently managed nutrient poor meadows dominated by clonal plants

  Autoren: KARRER, G., STEINER, H., STALLEGGER, M.

  Event: 8th clonal plant workshop 2006 - generality, specificity and diversity of clonal growth

• Year: 2005 -  SEM observations of seeds of gen. Gentiana L. and their systematic significance. Poster 1149

  Autoren: Davitashvili, N., Karrer, G.

  Event: 17th International Botanical Congress 2005

• Year: 2005 -  Plant architecture in Gentiana – a source for taxonomy and evolutionary biology

  Autoren: Karrer, G., Davitashvili, N.

  Event: 17th International Botanical Congress 2005

• Year: 2005 -  Plant architecture in Gentiana: a source for taxonomy and evolutionary biology

  Autoren: Karrer, G., Davitashvili, N

  Event: 17th International Botanical Congress 2005

• Year: 2005 -  SEM observations of seeds of gen. Gentiana L. and their systematic significance

  Autoren: Davitashvili, N., Karrer, G.

  Event: 17th International Botanical Congress 2005

• Year: 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.

  Event: 11. Österreichisches Botanikertreffen 2004

• Year: 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.

  Event: 2nd Interdisciplinary Mountain Research Young Scientists Conference 2004

• Year: 2004 -  Auswirkungen der Einstellung der Weidenutzung Ende des 19. Jahrhunderts im nordwestlichen Waldviertel

  Autoren: Bassler, G., Karrer, G.

  Event: Landschaft im Wandel - Offenhalten der Landschaft

• Year: 2004 -  Untersuchungen zum Diasporenregen in mageren Wiesentypen des Lainzer Tiergartens

  Autoren: Rosei, G., Karrer, G.

  Event: 11. Österreichisches Botanikertreffen 2004

• Year: 2004 -  Zur Methodik der naturschutzfachlichen Bewertung von Grünland auf regionalem Niveau.

  Autoren: Bassler, G., Lichtenecker, A., Karrer, G.

  Event: 11. Österreichisches Botanikertreffen 2004

• Year: 2004 -  Ecological classification of the grassland vegetation of the class Molinio-Arrhenatheretea in Northwest Croatia

  Autoren: Stancic, Z., Karrer, G.

  Event: 1st Croatian Botanical Symposium with international participation 2004

• Year: 2004 -  Trends in plant species traits during succession of abandoned meadows nearby Vienna, Austria.

  Autoren: Karrer, G.

  Event: 47th Annual Symposium International Association of Vegetation Science, Landscape Change and Ecosystem Disturbance 2004 - Islands and Continents

• Year: 2004 -  Rezente Änderungen der Grünlandnutzung und ihre Auswirkungen auf den Naturschutzwert am Beispiel des Niederösterreichischen Waldviertels

  Autoren: Lichtenecker, A., Bassler, G., Karrer, G.

  Event: Landschaft im Wandel - Offenhalten der Landschaft

• Year: 2004 -  Ecological classification of the grassland vegetation of the class Molinio-Arrhenatheretea in Nortwest Croatia

  Autoren: Stancic, Z., Karrer, G.

  Event: 1st Croatian Botanical Symposium with international participation 2004

• Year: 2003 -  Analysis of vegetation structure in the Natural Forest Reserve GAISBERG (Austria)

  Autoren: Steiner, H., Karrer, G.

  Event: International Conference in Mukachevo (Ukraine), Natural Forests in the Temperate Zone of Europe. Values and Utilisation

• Year: 2003 -  Utilisation of spatiotemporal gaps in meadows by different types of clonal growth

  Autoren: Karrer, G., Steiner, H.

  Event: 7th Clonal Plant Workshop 2003

• Year: 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.

  Event: 46th Symposium of the International Association for Vegetation Science 2003

• Year: 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.

  Event: EU-Enlargement - Chances and Risks for the Rural Area 2009

• Year: 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.

  Event: Programm and Book of Abstracts, POP2003, Allocation, Plasticity and Allometry, 16th Annual Meeting Plant Population Biology Section

• Year: 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.

  Event: 16th International Symposium - Biodiversity and Evolutionary biology of the German Botanical Society (DBG), 17th International Senckenberg Conference 2003

• Year: 2002 -  On the importance of seed rain in extensively managed meadows nearby Vienna

  Autoren: Karrer, G. Rosei, G., Beiser, A., Winkler, M., Kofler, K.

  Event: Metapopulation Dynamics and Landscape Fragmentation

• Year: 2001 -  Nitrogen and carbon cycling in montane grassland under different management regimes

  Autoren: Watzka, G., Karrer, G., Wanek, W.

  Event: COST-Aktion

• Year: 2001 -  Seedling establishment in nutrient rich meadows in Lainzer Tiergarten

  Autoren: Starzinger, U., Karrer, G.

  Event: 14th Meeting of the Working Group 2001 - Evolution and Plasticity in Plant Populations

• Year: 2001 -  Is it possible to recover plant diversity in anthropogenous grassland by soil seed bank?

  Autoren: Bing, S., Karrer, G.

  Event: 14th Meeting of the Working Group 2001 - Evolution and Plasticity in Plant Populations

• Year: 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.

  Event: 14th Meeting of the Working Group 2001 - Evolution and Plasticity in Plant Populations

• Year: 2001 -  Life history traits of Pimpinella saxifraga in a nutrient poor meadow nearby Vienna

  Autoren: Tüchler, A., Karrer, G.

  Event: 14th Meeting of the Working Group 2001 - Evolution and Plasticity in Plant Populations

• Year: 2001 -  The role of seed rain in nutrient poor meadows dominated by Nardus stricta

  Autoren: Beiser, A., Karrer, G. Kofler, K.

  Event: 14th Meeting of the Working Group 2001 - Evolution and Plasticity in Plant Populations

• Year: 2000 -  Acceleration of (clonal) growth and ageing in meadow plants by frequent cutting and optimal nutrient supply

  Autoren: Karrer, G.

  Event: Clone 2000

• Year: 1989 -  Vegetationsökologische Untersuchungen im Gleingraben bei Knittelfeld (Steiermark). Ein Beitrag zur Waldschadensforschung in Österreich

  Autoren: Karrer, G.

  Event: Atti del symposio della societa estalpino-dinarica di fitosociologia