Publications

Graefe, S., Meyer-Sand, L.F., Chauvette, K., Abdulai, I., Jassogne, L., Vaast, P., Asare, R. (2017) Evaluating farmers' knowledge of shade trees in different cocoa agro-ecological zones in Ghana. Human Ecology 45(3), 321-332.

Butz, P., Raffelsbauer, V., Graefe, S., Peters, T., Cueva, E., Hölscher, D., Bräuning, A. (2017) Tree growth and water use as climatic indicators in a tropical dry forest ecosystem. Ecological Indicators. http://dx.doi.org/10.1016/j.ecolind.2016.11.021

Gaitan, L., Läderach, P., Graefe, S., Rao, I., Van Der Hoek, R. (2016) Climate-smart livestock systems: An assessment of carbon stocks and GHG emissions in Nicaragua. PLoS ONE 11(12):e0167949. doi:10.1371/journal.pone.0167949.

Gaitan, L., Armbrecht, I., Graefe, S. (2016) Throughfall and soil hydrological properties in shaded and unshaded coffee plantations and a secondary forest: a case study from Southern Colombia. J. Agr. Rural Develop. Trop. Subtrop. 117(2), 309-321.

Graefe, S., Tapasco, J., Gonzalez, A. (2013) Resource use and GHG emissions of eight tropical fruit species cultivated in Colombia. Fruits 68(4), 303-314.

Leuschner, C., Zach, A., Moser, G., Homeier, J., Graefe, S., Hertel, D., Wittich, B., Soethe, N., Iost, S., Röderstein, M., Horna, V., Wolf, K. (2013) The carbon balance of tropical mountain forests along an altitudinal transect. In: Bendix, J., Beck, E., Bräuning, A., Makeschin, F., Mosandl, R., Scheu, S., Wilcke, W. (eds) Ecosystem Services, Biodiversity and Environmental Change in a Tropical Mountain Ecosystem of South Ecuador. pp. 117-139. Ecological Studies 221, Springer, Heidelberg.

Graefe, S., Dufour, D., van Zonneveld, M., Rodriguez, F., Gonzalez, A. (2013) Peach palm (Bactris gasipaes) in tropical Latin America: implications for biodiversity conservation, natural resource management and human nutrition. Biodiversity and Conservation 22, 269-300.

Peters, M., Rao, I., Fisher, M., Subbarao, G., Martens, S., Herrero, M., van der Hoek, R., Schultze-Kraft, R., Miles, J., Castro, A., Graefe, S., Tiemann, T., Ayarza, M., Hyman, G. (2013) Tropical forage-based systems to mitigate greenhouse gas emissions. In: Hershey, C.H., Neate, P. (eds) Eco-efficiency: From vision to reality. pp. 171-190. International Center for Tropical Agriculture, Cali, Colombia.

Graefe, S., Dufour, D., Giraldo, A., Muñoz, L.A., Mora, P., Solís, H., Garcés, H., Gonzalez, A. (2011) Energy and carbon footprints of ethanol production using banana and cooking banana discard: a case study from Costa Rica and Ecuador. Biomass and Bioenergy 35, 2640-2649.

Moser, G., Leuschner, C., Hertel, D., Graefe, S., Soethe, N., Iost, S. (2011) Elevation effects on the carbon budget of tropical mountain forests (S Ecuador): The role of the belowground compartment. Global Change Biology 17(6), 2211-2226.

Graefe, S., Coners, H., Hertel, D., Leuschner, C. (2011) Root functioning in tropical high elevation forests: Environmental vs. biological control of root water absorption. Environmental and Experimental Botany 71, 329-336.

Graefe, S., Hertel, D., Leuschner, C. (2010) N, P and K limitation of fine root growth along an elevation transect in tropical mountain forests. Acta Oecologica 36(6), 537-542.

Moser, G., Leuschner, C., Röderstein, M., Graefe, S., Soethe, N., Hertel, D. (2010) Biomass and productivity of fine and coarse roots in five tropical mountain forests stands along an altitudinal transect in southern Ecuador. Plant Ecology & Diversity 3(2), 151-164.

Graefe, S., Hertel, D., Leuschner, C. (2008) Fine root dynamics along a 2000-m elevation transect in South Ecuadorian mountain rainforests. Plant and Soil 313, 155-166.

Graefe, S., Hertel, D., Leuschner, C. (2008) Estimating fine root turnover in tropical forests along an elevational transect using minirhizotrons. Biotropica 40, 536-542.

Graefe, S., Schlecht, E., Buerkert, A. (2008) Opportunities and challenges of urban and periurban agriculture in Niamey, Niger. Outlook on Agriculture 37, 47-56.

Drechsel, P., Graefe, S., Fink, M. (2007) Rural-urban food, nutrient and virtual water flows in selected West African cities. IWMI Research Report 115. International Water Management Institute, Colombo, Sri Lanka.

Drechsel, P., Graefe, S., Sonou, M., Cofie, O. (2006) Informal irrigation in urban West Africa: an overview. IWMI Research Report 102. International Water Management Institute, Colombo, Sri Lanka.

Graefe, S., Siebert, S., Bruelheide, H., Buerkert, A. (2004) Changes in the agricultural structure of the Qira oasis. In: Runge M., Zhang X. (eds) Ecophysiology and habitat requirements of perennial plant species in the Taklimakan Desert. Contributions to a Workshop on sustainable management of the shelterbelt vegetation of river oases in the Taklimakan desert, Urumqi 2003, pp 35-41. Shaker Verlag, Aachen.

Graefe, S., Hermann, M., Manrique, I., Golombek, S., Buerkert, A. (2004) Effects of post-harvest treatments on the carbohydrate composition of yacon roots in the Peruvian Andes. Field Crops Research 86, 157-165.

Graefe, S. (2003) Crop and soil variability in traditional and modern Mayan maize cultivation of Yucatan, Mexico. Supplement No. 75 to the Journal of Agriculture and Rural Development in the Tropics and Subtropics. Kassel University Press.


Theses:

Graefe, S. (2008) Fine root dynamics and resource uptake in a South Ecuadorian mountain rainforest as dependent on elevation. PhD thesis, Georg-August-Universität Göttingen.

Graefe, S. (2003) Post-harvest compositional changes of yacon roots as affected by storage condition and cultivar. MSc thesis, Universität Kassel.

Graefe, S. (2001) Crop and soil variability in traditional and modern Mayan maize cultivation of Yucatan, Mexico. BSc thesis, Universität Kassel.