Dr Wilma J. Blaser Hart
Casual Academic & Postdoctoral Research Fellow
School of Biological Sciences
Publications
Journal Articles
W.J, Thompson, W.J, Blaser-Hart, J, Joerin, P, Krütli, E, Dawoe, B, Kopainsky, E., Chavez, R.D, Garrett and J, Six (2022). Can sustainability certification enhance the climate resilience of smallholder farmers? The case of Ghanaian cocoa. Journal of Land Use Science, 17 (1), 407-428. doi: 10.1080/1747423x.2022.2097455
Blaser-Hart, W. J., Hart, S. P., Oppong, J., Kyereh, D., Yeboah, E. and Six, J. (2021). The effectiveness of cocoa agroforests depends on shade-tree canopy height. Agriculture, Ecosystems and Environment, 322 107676, 1-11. doi: 10.1016/j.agee.2021.107676
Dierks, Janina, Blaser-Hart, Wilma J., Gamper, Hannes A. and Six, Johan (2021). Mycorrhizal fungi-mediated uptake of tree-derived nitrogen by maize in smallholder farms. Nature Sustainability, 5 (1), 64-70. doi: 10.1038/s41893-021-00791-7
Niether, Wiebke, Jacobi, Johanna, Blaser, Wilma J., Andres, Christian and Armengot, Laura (2020). Cocoa agroforestry systems versus monocultures: A multi-dimensional meta-analysis. Environmental Research Letters, 15 (10) 104085, 104085. doi: 10.1088/1748-9326/abb053
Blaser, W. J., Oppong, J., Hart, S. P., Landolt, J., Yeboah, E. and Six, J. (2020). Author Correction: Climate-smart sustainable agriculture in low-to-intermediate shade agroforests. Nature Sustainability, 3 (9), 768-768. doi: 10.1038/s41893-020-0594-6
Wartenberg, Ariani C., Blaser, Wilma J., Roshetko, James M., Van Noordwijk, Meine and Six, Johan (2020). Soil fertility and Theobroma cacao growth and productivity under commonly intercropped shade-tree species in Sulawesi, Indonesia. Plant and Soil, 453 (1-2), 87-104. doi: 10.1007/s11104-018-03921-x
Andres, Christian, Hoerler, Raphael, Home, Robert, Joerin, Jonas, Dzahini-Obiatey, Henry K., Ameyaw, George A., Domfeh, Owusu, Blaser, Wilma J., Gattinger, Andreas, Offei, Samuel K. and Six, Johan (2018). Social network to inform and prevent the spread of cocoa swollen shoot virus disease in Ghana. Agronomy for Sustainable Development, 38 (5) 53. doi: 10.1007/s13593-018-0538-y
Blaser, W. J., Oppong, J., Hart, S. P., Landolt, J., Yeboah, E. and Six, J. (2018). Climate-smart sustainable agriculture in low-to-intermediate shade agroforests. Nature Sustainability, 1 (5), 234-239. doi: 10.1038/s41893-018-0062-8
Andres, Christian, Blaser, Wilma J., Dzahini-Obiatey, Henry K., Ameyaw, George A., Domfelh, Owusu K., Awiagah, Moses A., Gattinger, Andreas, Schneider, Monika, Offei, Samuel K. and Six, Johan (2018). Agroforestry systems can mitigate the severity of cocoa swollen shoot virus disease. Agriculture Ecosystems and Environment, 252, 83-92. doi: 10.1016/j.agee.2017.09.031
Wartenberg, Ariani C., Blaser, Wilma J., Janudianto, K. N., Roshetko, James M., van Noordwijk, Meine and Six, Johan (2018). Farmer perceptions of plant-soil interactions can affect adoption of sustainable management practices in cocoa agroforests: a case study from Southeast Sulawesi. Ecology and Society, 23 (1) 18. doi: 10.5751/ES-09921-230118
Wartenberg, Ariani C., Blaser, Wilma J., Gattinger, Andreas, Roshetko, James M., Van Noordwijk, Meine and Six, Johan (2017). Does shade tree diversity increase soil fertility in cocoa plantations?. Agriculture, Ecosystems and Environment, 248, 190-199. doi: 10.1016/j.agee.2017.07.033
Andres, Christian, Gattinger, Andreas, Dzahini-Obiatey, Henry K., Blaser, Wilma J., Offei, Samuel K. and Six, Johan (2017). Combatting cocoa swollen shoot virus disease: what do we know?. Crop Protection, 98, 76-84. doi: 10.1016/j.cropro.2017.03.010
Blaser, W. J., Oppong, J., Yeboah, E. and Six, J. (2017). Shade trees have limited benefits for soil fertility in cocoa agroforests. Agriculture Ecosystems and Environment, 243, 83-91. doi: 10.1016/j.agee.2017.04.007
Vandegrift, Roo, Blaser, Wilma, Campos-Cerda, Felipe, Heneghan, Allison F., Carroll, George C. and Roy, Bitty A. (2015). Mixed fitness effects of grass endophytes modulate impact of enemy release and rapid evolution in an invasive grass. Biological Invasions, 17 (4), 1239-1251. doi: 10.1007/s10530-014-0791-1
Blaser, Wilma J., Shanungu, Griffin K., Edwards, Peter J. and Venterink, Harry Olde (2014). Woody encroachment reduces nutrient limitation and promotes soil carbon sequestration. Ecology and Evolution, 4 (8), 1423-1438. doi: 10.1002/ece3.1024
Blaser, Wilma J., Sitters, Judith, Hart, Simon P., Edwards, Peter J. and Venterink, Harry Olde (2013). Facilitative or competitive effects of woody plants on understorey vegetation depend on N-fixation, canopy shape and rainfall. Journal of Ecology, 101 (6), 1598-1603. doi: 10.1111/1365-2745.12142
Roy, Bitty A., Coulson, Tim, Blaser, Wilma, Policha, Tobias, Stewart, Julie L., Blaisdell, G. Kai and Guesewell, Sabine (2011). Population regulation by enemies of the grass Brachypodium sylvaticum: demography in native and invaded ranges. Ecology, 92 (3), 665-675. doi: 10.1890/09-2006.1