Vibeke Langer

Vibeke Langer

Associate Professor, Professor emeritus.

Member of:

    Research interests

    • Land use, production intensity and farming practices and their impact on farmland nature, especially on organic farms

    • Production systems and ecological functions of flora and insect fauna (natural enemies, pollinators) in agricultural landscapes.

    • Operationalising the concept of "eco-functional intensification": more knowledge/ha

    • Insect pest management on organic farms.

    • Integrated Pest Management and its practical implementation in Denmark

    Supervision of PhD students:

    • Casper Ingerslev Henriksen: The role of organic farms for ecosystem services and biodiversity protection in intensively farmed landscapes. 2009-2012
    • Masayasu Asai: Integrated assessment of organic livestock-crop production systems: local food network approach. 2010-2013
    • Marie Trydeman Knudsen: Environmental assessment of imported organic agricultural products - focusing on Brazilian orange juice, Egyptian potatoes and Chinese soybeans (completed 2011)
    • Yuexian Liu: Energy analysis on different pear production chains in China (completed 2010)

    Supervised MSc thesis:

    • Martin Kukk: Using evidence-based collaboration strategies to develop the Estonian organic sector (2015)
    • Maria Eriksson: Adoption of integrated pest management practices (IPM) by Danish farmers after IPM advising (2015)
    • Darran Andrew Thomsen: Insekt pathogenic fungi on cereal aphids in organic and conventional wheat fields (2013)
    • Ida Stærk Nicolajsen: Cereal aphids and parasitoids in organic and conventional winter wheat (2012)
    • Iris Feuerhahn: Crop Protection: Values and Technological change after transition from organic to conventioal agriculture (2011)
    • Nanna Karkov Ytting: Weevil Pests in organic White Clover Seed Production (Trifolium repens). The effect of late defoliation on Apion fulvipes and Hypera meles, 2009
    • Henrik Bak Topbjerg: Weevil Pests in organic White Clover Seed Production (Trifolium repens). The effect of late defoliation on Apion fulvipes and Hypera meles, 2009
    • Nina Jørgensen: Effect of the Presence of a Floral Resource on Higher Trophic Level Omnivores and Herbivore Prey, 2007
    • Marie-Louise Risgaard: Drivkræfter bag til- og fravalg af økologisk drift i Danmark - resultater fra casestudier (Driving forces of conversion to and reversion from organic farming in Denmark - results from case studies), 2005

    Supervised BSc thesis:

    • Kicki Pauline Møs: Climate strategy for organic agriculture (2017) 
    • Rikke-Marie Nielsen: Flower fallows - potentials for wild bees (2017)
    • Mariane Lynge: An investigation of nectar quantoty and quality in oilseed rape used in hybrid seed production, in relation to pollination and honey yield (2015)
    • Frederik Rubeck Lund-Sørensen: An investigation of the use of video for assessment of food resources for wild bees (2015)
    • Eva Lykke Jacobsen: Føderesourcer for bier (2015)
    • Christina Gartmann Johansen: Biodiversitet af vilde bier Effekten af økologisk landbrug i intensive landskaber, 2012. (Diversity of wild bees - the effect of organic farming in intensive farm landscapes)
    • Cecilie Skovlund Christensen: Føderessourcer for humlebier i økologiske og konventionelle vinterhvede marker, 2011 (Food resources for bumble bees in orgnic and conventional winter wheat)
    • Charlotte Bruun Petersen: Har økologisk drift en gavnlig effekt på fødetilgængeligheden for vilde bier i vejrabatter? 2011 (Does organic management increase food availability for wild bees in road verges?)
    • Richard Freltoft Løvlund: Naturvidenskaben og bevidsthedens fænomener, 2010
    • Mille Krambeck Hansen: Soft Systems Methodology. Case: opstart af økologisk isproduktion i Nepal, 2009
    • Lasse Bech Jacobsen : Økologiske solbær: sygdomme, sorter og sortsafprøvning, 2009 (Organic black currant: diseases, varieties and variety testing)
    • Nina Tofte Hansen: Evaluation of the Long Term Impact of Bt Cotton, 2008
    • Rasmus Nimgaard: Naturindikatorer på bedriftsniveau, 2005 (Nature indicators on farm level)
    • Johanne Braskov Koch: Sammenligning af økologiske og konventionelle gulerødder, løg og blomkål, 2005
    • Mikaela Vasström og Helle Mathiasen: Increased plant diversity for pest and disease management in organic apples, 2004
    • Susanne Thomsen: "Naturplan for Barritskov - et projektstudium om udvikling af naturplaner for økologiske jordbrug i Danmark", 2002 (Nature Plan for Barritskov - development of nature plans for organic farms in Denmark)
    • Annette Bødtcher Jensen: "Hvad er økologisk jordbrugs aktuelle og potentielle rolle i forhold til at løse landbrugets strukturbaserede problemer ?", 2002
    • Marie-Louise Risgaard: Forekomst af nytteinsekter på bedriftsniveau i praktisk økologisk jordbrug - en evaluering af, på hvilke måder økologiske landmænd kan påvirke forekomst af nytteinsekter på dyrkningsfladen, belyst ved hjælp af løbebiller (Coleoptera: Carabidae)og svirrefluer (Diptera: Syrphidae)

    Selected publications

    1. E-pub ahead of print

      Parasitoids of the cabbage seed weevil deliver high and consistent parasitism in variable landscapes: A showcase of conservation biocontrol

      Langer, Vibeke & Jensen, Signe Marie, 2023, (E-pub ahead of print) In: Pest Management Science.

      Research output: Contribution to journalJournal articlepeer-review

    2. Published

      MSc Agriculture students working with ex-campus stakeholders: first experiences and challenges

      Langer, Vibeke, Lund, M. & Bendevis, Mira Arpe, 2014, Farming systems facing global challenges: Capacities and strategies: The 11th European IFSA Symposium, 1-4 April 2014, Berlin, Germany. Aenis, T., Knierim, A., Riecher, M-C., Ridder, R., Schobert, H. & Fischer, H. (eds.). IFSA, p. 514-519 6 p.

      Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    3. Published

      Responding to environmental regulations through collaborative arrangements: social aspects of manure partnerships in Denmark

      Asai, M., Langer, Vibeke & Frederiksen, P., 2014, In: Livestock Science. 167, p. 370-380 11 p.

      Research output: Contribution to journalJournal articlepeer-review

    ID: 4224046