Melanie Hagen

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InstitutionInstitute for Biodiversity and Ecosystem Dynamics (IBED)
University of Amsterdam
The Netherlands
Postal addressScience Park 904
Office phone+31617823159
Job /  professional statusResearcher
Preferred COLOSS theme(s)   Diversity & Conservation,Environment
Research interestspollination ecology
 interaction networks
 bumblebee movement and behavior
PublicationsDupont, Y.L., Trøjelsgaard, K., Hagen, M., Henriksen, M.V., Olesen, J.M., Pedersen, N.M.E., Kissling, W.D. (accepted). Spatial structure of an individual-based plant-pollinator network. Oikos

2014 and early online:
Kissling, W.D., Pattemore, D.E., Hagen, M.: Challenges and prospects in the radio telemetry of insects. Biological Reviews (DOI: 10.1111/brv.12065).

Hagen, M., Dupont, Y.L. 2013. Inter-tegular span and head width as estimators of fresh and dry body mass in bumblebees (Bombus spp.). Insectes Sociaux 60: 251-257.
Dupont, Y.L., Henriksen, M.V., Hagen, M. 2013. Radiobier. Aktuelt Naturvidenskab 5: 32-35.

Hagen, M., et. al. 2012. Biodiversity, species interactions and ecological networks in a fragmented world. Advances in Ecological Research 46: 89-210.
Schleuning, M., …., Hagen, M., et al. 2012. Specialization of mutualistic interaction networks decreases towards tropical latitudes. Current Biology 22: 1925-1931.
Olesen, J. M., Dupont, Y. L., Hagen, M., Rasmussen, C., Trøjelsgaard, K. (2012). Structure and dynamics of pollination networks: The past, the present and the future. In Patiny S. (ed.) Evolution of plant-pollinator interactions. Cambridge University Press. Pp 374-391.
Oronje, M.L., Hagen, M., Gikungu, M., Kasina, M., Kraemer, M. 2012. Pollinator diversity, behaviour and limitation on yield of Momordica charantia L. (Curcubitaceae) in Western Kenya. African Journal of Agricultural Research 7: 1629-1638.
Mwangi D. K., M. Kasina, J. H. Nderitu, M. Hagen, M. Gikungu, M. Kraemer. 2012. Diversity and abundance of native bees foraging on hedgerow plants in the Kakamega farmlands, western Kenya. Journal of Apicultural Research & Bee World 51: 298-305.

Sørensen, P.B., Damgaard, C.F., Strandberg, B., Dupont, Y., Pedersen, M.B., Carvalheiro, L.G., Biesmeijer, J.C., Olesen, J.M., Hagen, M., Potts, S.G. 2011. A method for under-sampled ecological network data analysis: Plant-pollination as case study. Journal of Pollination Ecology 6: 129-139.
Schleuning, M., Farwig, N., Peters, M.K., Althof, A., Bergsdorf, T., Bleher, B., Brandl, R., Dalitz, H., Fischer, E., Fischer, G., Freund, W., Gikungu, M.W., Hagen, M., Hita Garcia, F., Kagezi, G.H., Kaib, M., Kraemer, M., Lung, T., Naumann, C.M., Schaab, G., Theisen, I., Templin, M., Uster, D., Wägele, W., Yeshitela, K., Böhning-Gaese, K.2011 Forest fragmentation and selective logging have inconsistent effects on multiple animal-mediated ecosystem processes in a tropical forest. 2011. PLoS ONE 6: e27785.
Barfod, A., Hagen, M., Borchsenius, F. 2011. Twenty five years’ progress in the understanding of pollination mechanisms in palms (Arecaceae). Annals of Botany 108: 1503-1516.
Hagen, M., Wikelski, M., Kissling, W.D. (2011). Bumblebee movements revealed by radio-tracking. PLoS ONE 6:e19997. doi:10.1371/

2010 and before
Hagen, M., Kraemer, M. 2010. Agricultural surroundings support flower-visitor networks in an afrotropical rain forest. Biological Conservation 143: 1654-1663.
Kasina, J., Hagen, M., Kraemer, M., Nderitu, J., Martius, C.,Wittmann, D. 2009. Bee pollination enhances crop yield and fruit quality in Kakamega, Western Kenya. East Africa Agriculture and Forest Journal 75: 1-11.
Gikungu, M.W., Hagen, M., Kraemer, M. 2009. An overview of pollinator studies in Kenya. In: Ssymank, A., Hamm, A., Vischer-Leopold, M. (eds.). Caring for Pollinators. Safeguarding agro-biodiversity and wild plant diversity. BfN-Skripten 250: 56-63.
Hagen, M., Kraemer, M. 2006. Einfluss der Landschafts-Strukturierung auf Pflanze-Bestäuber Interaktionen in einem ostafrikanischen Wald-Agrarland Mosaik. In: Korn, H. & Veit. U. (eds.). Treffpunkt Biologische Vielfalt VI: 63-68.