Vibeke Langer

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)

• MSc Horticulture, University of Copenhagen (previously The Royal Veterinary and Agricultural University) 1980
• PhD, Agricultural Entomology 1995