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Dr Helena Posthumus
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- NRI Department:
Livelihoods and Institutions Department
Phone: +44 (0)1634 88 3199
Visiting Fellow in Environment & Development
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Dr John E Orchard
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- NRI Department:
Livelihoods and Institutions Department
- Qualifications:
BSc (Hons), PhD
- Biography:
2015 – present: Director of Postgraduate Research Studies 2010 – 2015: Director of Research and Enterprise 2001 – 2010: Group Leader of Enterprise, Trade and Food Management Group, Natural Resources Institute (NRI), University of Greenwich, United Kingdom. 1996 – 2001: Deputy Head of Food Systems Department and Head of Horticulture Group, NRI. 1996: Acting Head of Crop Utilisation Department, NRI. 1994 to April 1996: Head of Post-harvest Horticulture Group, NRI. 1991 to 1993: Head of Food and Processing Section, NRI. 1988-91: Overseas Development Administration, UK Government. Technical Co-operation Officer (Biochemist/Plant Physiologist), Kenya Tea Research Foundation. Investigating more efficient methods of tea manufacture in Estate and Smallholder factories, and yield and physiology of the tea bush under different environment. 1986-88: Senior Research Officer, Liverpool University. Contract research on physiological plant pathological problems of cacao for chocolate industry. 1980-85: Overseas Development Administration, UK Government. Technical Co-operation Officer (Plant Physiologist) at the Agricultural Research Institute of Ecuador undertaking research in the yield reductions of cocoa due to drought and influence of irrigation. 1978-80: National Cacao Research Centre, Brazil, Experimental Officer, studying fruit growth and development.
- Research / Scholarly Interests:
I have an interest in the post-harvest management of beverage, cereal and horticulture crops, with a focus on research, advisory and training projects covering the supply chain with support to farmers, traders and support services. Considerable experience in research project formulation, administration, management and appraisal. NRI Currently supervising PhD students in the following research areas:
- Structuring Client Voice in Microfinance Institutions in Kenya.
- Evaluating the Impact of Climate Change on Post-Harvest Quality of Perishables.
- Optimising the production of biofuels from algae.
- Reasons for multiple loans in microfinance and their effect on the repayment performance.
- Consumers' perception of food safety in the supply chain.
- Awards:
- Member of Tropical Association of Agriculture
- Selected Publications:
- John Orchard, Tim Chancellor, Roy Denton, Amadou Abdoulaye Fall, and Peter Jaeger (2013). Growing Africa - Unlocking the potential of agribusiness. Annex 1: The Rice Value Chain (World Bank report). http://www-wds.worldbank.org/external/default/WDSContentServer/WDSP/IB/2013/03/13/000350881_20130313160910/Rendered/PDF/756630v20Box374353B00PUBLIC0.pdf
- Kleih, Ulrich, Linton, John, Marr, Ana, Mactaggart, Murdoch, Naziri, Diego and Orchard, John E. (2013) Financial services for small and medium-scale aquaculture and fisheries producers. Marine Policy, 37. pp. 106-114. ISSN 0308-597X (doi:10.1016/j.marpol.2012.04.006)
- Tortoe, Charles, John Orchard and Anthony Beezer. (2011) Multilinear Regression Approach in Predicting Osmo-Dehydration Processes of Apple, Banana and Potato. J Food Processing Technology 2:122. doi:10.4172/2157-7110.1000122
- Tortoe, C., Orchard, J., Beezer, A. and Tetteh, J. (2011) Application of radial basis function network with a Gaussian function of artificial neural networks in osmo-dehydration of plant materials. Journal of Artificial Intelligence, 4 (4). pp. 233-244. ISSN 1994-5450 (Print), 2077-2173 (Online) (doi:10.3923/jai.2011.233.244)
- Antonidaki-Giatromanolaki, Anna, Orchard, John, Papadimitriou, Michel, Dragassaki, Magdalena and Vlahos, Ioannis (2010) Propagation of Ptilostemon chamaepeuce (L.) less through tissue culture. Journal of Biological Research-Thessaloniki, 13. pp. 105-111. ISSN 1790-045 X (print)
- Tortoe, C., Orchard, J. and Beezer, A. (2009) Effect of agitation and antagonism between sucrose and sodium chloride on mass transfer during osmo-dehydration in plant materials. International Food Research Journal, 16. pp. 521-530. ISSN 1985-4668 (Print), 2231-7546 (Online)
- Tortoe, Charles, Orchard, John and Beezer, Anthony (2008) Artificial cell studies in simulated apple and potato starch cell complex during osmotic dehydration. Journal of Food Quality, 31 (5). pp. 559-570. ISSN 1745-4557 (online) (doi:10.1111/j.1745-***************.x)
Phone: +44 (0)1634 88 3199
Visiting Fellow
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Dr Joshua Wesana
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- NRI Department:
Livelihoods and Institutions Department
- Qualifications:
BSc, MSc, MPH, PhD
- Biography:
Dr Joshua Wesana has a background in Nutrition and holds a PhD in Food Science and Nutrition from Ghent University, Belgium. His PhD focused on nutrition sensitive approaches and specifically took on a stakeholder-based view of utilizing agri-food value chains for nutrition benefits, with a focus on assessment and reduction of food and nutritional losses. This research used the cross-cutting operations management theory of Lean and applied it in the agri-food (dairy) sector to improve efficiency and eliminate waste and loss. Before his PhD, Joshua pursued two Master degrees in – Human Nutrition at Ghent University (Belgium) and Public Health Epidemiology at Karolinska Institute (Sweden). During this time, his research mainly focused on adoption and consumption of biofortified foods. This work contributed greatly to on-going collation of scientific evidence by the WHO to develop guidelines to use biofortification as a public health strategy.
During and after his PhD, he also worked as a manager/deputy-coordinator of various agri-food based research and capacity building programs and projects in Uganda and Kenya. Notably, since 2015, he was program manager for a long-term institutional collaboration between Mountains of the Moon University (Uganda) and Ghent University (Belgium), overseeing two projects targeting improved food security by promoting interventions in the fish and dairy value chains. He has also developed and managed individual action research projects in Uganda and Kenya on; food losses among farmers, agronomic iodine biofortification, insects-based complementary foods, fish farmer business development and aquaculture education development.
Joshua’s interdisciplinary research interest continues to be on food systems and the impact on food and nutrition security, particularly in developing countries. He therefore joined Natural Resources Institute in June 2020 as a Senior Fellow in Fish and Food Systems (Nutritional Outcomes), initially working, in collaboration with WorldFish and other partners on the CGIAR Research Program on Fish, to amplify the role fish plays in sub-Saharan African food systems and mitigate food and nutrition insecurity among the most vulnerable populations.
- Research / Scholarly Interests:
- Keen to advance nutritional knowledge that can lead to policy change to benefit people mostly in locations with the greatest nutrient deficiencies.
- Interested in nutrition-sensitive approaches that mainly lead to improved nutritional outcomes.
- Research taking on a sustainable food systems perspective, particularly along fish value chains, while considering other dimensions like food environments, consumer behaviour and external drivers. Assessment of Post-Harvest losses along fish value chains, including nutritional losses and how these can be mitigated for better nutritional outcomes. Also building evidence on product development, access and consumption of nutrient-rich foods such as fish products among vulnerable, poor and rural sub-populations including women and children.
- Awards:
- STFC Food Network, UK – Champion for Africa from 2020
- European Association of Agricultural Economics – Member, 2016-2019
- Selected Publications:
- Olum, Solomon, Wesana, Joshua, Odongo, Walter, Mogendi, Joseph, Okello, Collins, Webale, Dominic, Makokha, Anselimo, Ongeng, Duncan, Gellynck, Xavier and De Steur, Hans (2020) Agronomic biofortification from a stakeholder's viewpoint: evidence from studies on iodine‐enriched foods in Uganda. In: Benkeblia, Noureddine, (ed.) Vitamins and Minerals Biofortification of Edible Plants. Wiley, pp. 163-190. ISBN 978-1119511144 (doi:https://doi.org/10.1002/9781119511144.ch8)
- Wesana, Joshua, Schouteten, Joachim, Van Acker, Evi, Gellynck, Xavier and De Steur, Hans (2019) On consumers’ use, brand preference and equity of sports nutrition products. British Food Journal, 122 (2). pp. 635-654. ISSN 0007-070X (doi:https://doi.org/10.1108/bfj-08-2019-0589)
- Wesana, Joshua, Gellynck, Xavier, Dora, Manoj, Pearce, Darian and De Steur, Hans (2019) Measuring food and nutritional losses through value stream mapping along the dairy value chain in Uganda. Resources, Conservation and Recycling, 150:104416. ISSN 0921-3449 (doi:https://doi.org/10.1016/j.resconrec.2019.104416)
- Kamrath, Carolin, Wesana, Joshua, Bröring, Stefanie and De Steur, Hans (2019) What do we know about chain actors’ evaluation of new food technologies? A systematic review of consumer and farmer studies. Comprehensive Reviews in Food Science and Food Safety, 18 (3). pp. 798-816. ISSN 1541-4337 (Online) (doi:https://doi.org/10.1111/1541-4337.12442)
- Dora, Manoj, Wesana, Joshua, Gellynck, Xavier, Seth, Nitin, Dey, Bidit and De Steur, Hans (2019) Importance of sustainable operations in food loss: evidence from the Belgian food processing industry. Annals of Operations Research, 290. pp. 47-72. ISSN 0254-5330 (Print), 1572-9338 (Online) (doi:https://doi.org/10.1007/s10479-019-03134-0)
- Pearce, Darian, Dora, Manoj, Wesana, Joshua and Gellynck, Xavier (2018) Determining factors driving sustainable performance through the application of lean management practices in horticultural primary production. Journal of Cleaner Production, 203. pp. 400-417. ISSN 0959-6526 (doi:https://doi.org/10.1016/j.jclepro.2018.08.170)
- Wesana, Joshua, De Steur, Hans, Dora, Manoj, Mutenyo, Emma, Muyama, Lucia and Gellynck, Xavier (2018) Towards nutrition sensitive agriculture. Actor readiness to reduce food and nutrient losses or wastes along the dairy value chain in Uganda. Journal of Cleaner Production, 182. pp. 46-56. ISSN 0959-6526 (doi:https://doi.org/10.1016/j.jclepro.2018.02.021)
- De Steur, Hans, Wesana, Joshua, Blancquaert, Dieter, Van Der Straeten, Dominique and Gellynck, Xavier (2016) Methods matter: a meta-regression on the determinants of willingness-to-pay studies on biofortified foods. Annals of the New York Academy of Sciences, 1290 (1). pp. 34-46. ISSN 0077-8923 (Print), 1749-6632 (Online) (doi:https://doi.org/10.1111/nyas.13277)
- De Steur, Hans, Wesana, Joshua, Blancquaert, Dieter, Van Der Straeten, Dominique and Gellynck, Xavier (2016) The socioeconomics of genetically modified biofortified crops: a systematic review and meta-analysis. Annals of the New York Academy of Sciences, 1390 (1). pp. 14-33. ISSN 0077-8923 (Print), 1749-6632 (Online) (doi:https://doi.org/10.1111/nyas.13199)
- De Steur, Hans, Wesana, Joshua, Dora, Manoj K., Pearce, Darian and Gellynck, Xavier (2016) Applying value stream mapping to reduce food losses and wastes in supply chains: a systematic review. Waste Management, 58. pp. 359-368. ISSN 0956-053X (Print), 1879-2456 (Online) (doi:https://doi.org/10.1016/j.wasman.2016.08.025)
- De Steur, Hans, Birundu Mogendi, Joseph, Wesana, Joshua, Anselimo, Makokha and Xavier, Gellynck (2015) Stakeholder reactions toward iodine biofortified foods. An application of protection motivation theory. Appetite, 92. pp. 295-302. ISSN 0195-6663 (doi:https://doi.org/10.1016/j.appet.2015.05.038)
Phone: +44 (0)1634 88 3199
Visiting Fellow
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Dr Moritz Bömer
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- NRI Department:
Livelihoods and Institutions Department
- Qualifications:
MSc, PhD
- Biography:
Dr Moritz Bömer completed his Diplomingenieur (equivalent to MSc) in Biotechnology at the University of Münster, Germany in 2007, gaining extensive knowledge and experience in molecular biology techniques. Moving to UK in 2007, Dr Bömer has initiated his career in scientific research in January 2008 at the Royal Holloway University of London (RHUL), working as a Research Technician on a BBSRC funded project with the aim to establish the link between jasmonate signalling and the cell cycle. In September 2009, he was awarded the PhD SouthWest London Academic Network Studentship at RHUL. The project based within the department of Plant Molecular Sciences under the supervision of Dr Alessandra Devoto. The title of the PhD project was "Investigation on the Mechanism of Action of Jasmonates on Growth and Metabolite Production in Arabidopsis and their Potential Application to Cancer Therapy". During 3 years, Dr Bömer employed transcriptomic, metabolomic and proteomic approaches to gain new insights into how jasmonates (JAs) can stunt plant growth under stress conditions, and more specifically how JA-signalling regulates the plant cell cycle (Noir and Bömer et al., 2013). Additionally, Dr Bömer developed a novel bioassay for the identification of JA-regulated secondary metabolites with potential anticancer activity. During his PhD, Dr Bömer established effective relationships and highly productive collaborations with Prof Nick Smirnoff at the University of Exeter and Dr Amanda Harvey at Brunel University. Moreover, in 2010 Dr Bömer presented his work at the 21st International Conference on Arabidopsis Research (ICAR) in Yokohama (Japan, June 2010) and also took part at the BBSRC/Tokyo Embassy International Workshop "Inference and Modelling of Regulatory Networks in Multicellular systems" at the RIKEN institute (Japan, June 2010). Following his PhD, Dr Bömer worked as Postdoctoral Research Assistant in Molecular Plant Pathology with Dr Laurence Bindschedler at RHUL on the EPSRC funded project 'Silencing Targeted Effector in Planta (STEP)' with the aim to silence effector proteins from the obligate fungal pathogen barley powdery mildew based on the host induced gene silencing (HIGS) approach. In October 2013, Dr Bömer joined the Natural Resources Institute, University of Greenwich, as a Research Fellow on a project that aims to identify activatable endogenous pararetrovirus (EPRV) sequences in yam breeding lines.
Keywords: Plant Molecular Biology, Plant Virology, Endogenous Pararetrovirus, Yam Viruses
- Research / Scholarly Interests:
Moritz Bömer is currently committed on the identification of activatable endogenous pararetrovirus (EPRV) sequences in yam breeding lines. Yams are an important food crop in many tropical and sub-tropical countries, particularly in West Africa. Yams are propagated vegetatively through their tubers, which lead to an accumulation of tuber-borne diseases in farmers planting material and subsequent serious crop yield losses. The economically-important tuber-borne diseases are caused by viruses, and the only effective method of controlling these virus diseases is to use virus-free planting material (clean 'seed' yams). In addition to the normal virus infection process, some badnavirus species appear to be integrated into the host genome of some yam species. Integrated badnavirus sequences are termed 'endogenous pararetroviruses' (EPRVs). Of particular concern is that many EPRVs have been shown to be 'activatable', i.e. able to replicate and initiate virus infections de novo. Activation is considered to be triggered by the epigenetic modifications that occur during hybridization of parental genomes as well as environmental stresses. Therefore it is essential to improve existing diagnostic tools for broad-specific detection of viruses and EPRVs. The yam lines containing 'activatable' EPRVs will need to be removed from the multiplication process as they cannot be 'cleaned' of badnaviruses and will pose a serious long term threat to the genuinely virus-free yam lines.
- Selected Publications:
- Bömer, Moritz, O’Brien, José A., Pérez-Salamó, Imma, Krasauskas, Jovaras, Finch, Paul, Briones, Andrea, Daudi, Arsalan, Souda, Puneet, Tsui, Tjir-Li, Whitelegge, Julian P., Bolwell, G. Paul and Devoto, Alessandra (2018) COI1-dependent jasmonate signalling affects growth, metabolites production and cell wall protein composition in Arabidopsis. Annals of Botany. pp. 1-13. ISSN 0305-7364 (Print), 1095-8290 (Online) (In Press) (doi:10.1093/aob/mcy109)
- Bömer, Moritz, Rathnayake, Ajith I., Visendi, Paul, Sewe, Steven O., Sicat, Juan Paolo A., Silva, Gonçalo , Kumar, P. Lava and Seal, Susan E. (2018) Tissue culture and next-generation sequencing: A combined approach for detecting yam (Dioscorea spp.) viruses. Physiological and Molecular Plant Pathology. ISSN 0885-5765 (Print), 1096-1178 (Online) (In Press) (doi:10.1016/j.pmpp.2018.06.003)
- Bömer, Moritz, Turaki, Aliyu, Rathnayake, Ajith, Silva, Goncalo , Lava Kumar, P. and Seal, Susan (2018) Rolling circle amplification to screen yam germplasm for badnavirus infections and to amplify and characterise novel badnavirus genomes. Bio-protocol, 8 (1). ISSN 2331-8325 (Online) (doi:10.21769/BioProtoc.2672)
- Bömer, Moritz, Rathnayake, Ajith I., Visendi, Paul, Silva, Gonçalo and Seal, Susan E. (2017) Complete genome sequence of a new member of the genus Badnavirus, Dioscorea bacilliform RT virus 3, reveals the first evidence of recombination in yam badnaviruses. Archives of Virology. ISSN 0304-8608 (Print), 1432-8798 (Online) (doi:10.1007/s00705-017-3605-9)
- Turaki, Aliyu A., Bömer, Moritz , Silva, Gonçalo , Kumar, P. Lava and Seal, Susan E. (2017) PCR-DGGE analysis: Unravelling complex mixtures of badnavirus sequences present in yam germplasm. Viruses, 9 (7). p. 181. ISSN 1999-4915 (Print), 1999-4915 (Online) (doi:10.3390/v9070181)
- Bömer, Moritz, Turaki, Aliyu A., Silva, Gonçalo , Kumar, P. Lava and Seal, Susan E. (2016) A sequence-independent strategy for amplification and characterisation of episomal badnavirus sequences reveals three previously uncharacterised yam badnaviruses. Viruses, 8:188. pp. 1-22. ISSN 1999-4915 (Print), 1999-4915 (Online) (doi:10.3390/v8070188)
- Noir, Sandra, Bömer, Moritz, Takahashi, Naoki, Ishida, Takashi, Tsui, Tjir-Li, Balbi, Virginia, Shanahan, Hugh, Sugimoto, Keiko and Devoto, Alessandra (2013) Jasmonate controls leaf growth by repressing cell proliferation and the onset of endoreduplication while maintaining a potential stand-by mode. Plant Physiology, 161 (4). pp. 1930-1951. ISSN 0032-0889 (Print), 1532-2548 (Online) (doi:10.1104/pp.113.214908)
Phone: +44 (0)1634 88 3237
Visiting Fellow
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Dr Nanam Dziedzoave
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- NRI Department:
Livelihoods and Institutions Department
Phone: +44 (0)1634 88 3199
Visiting Fellow at NRI
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Dr Sarah Arnold
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- NRI Department:
Livelihoods and Institutions Department
- Qualifications:
MA (Cantab), PhD (Lond)
- Biography:
Dr Sarah Arnold joined the University of Greenwich in 2010, after completing her PhD in sensory ecology in the Chittka Lab at Queen Mary, University of London. Her background at Queen Mary and prior to that at the University of Cambridge, was in pollinator behaviour (Dyer et al. 2006, Nature) and the evolution of flower colours (Arnold et al. 2010, PLoS ONE). Dr Arnold investigated trends in the colour composition of flowering plant communities, and the responses of bees to flower colours under variable light conditions, finding that bees show preferences for familiar illuminant types when foraging (Arnold et al. 2012, J Exp Biol).
Since joining the Natural Resources Institute (NRI), Dr Arnold has continued to develop her interest in pollinators, studying the effects of the composition of pollen and nectar (Arnold et al. 2014, J Chem Ecol) on pollinators, their use of odour cues (Arnold et al. in prep) and how environment influences pollinator populations (Arnold et al. 2018, Agr Ecosys Environ). Additionally, she works on the ecology and behaviour of stored product pests, investigating the factors determining how they orient towards food material (Arnold et al. 2012, PLoS ONE; 2015, Bull Ent Res; 2016, Peer J) and the potential of pesticidal plants and other control methods in pre- and post-harvest pest management. Dr Arnold is particularly interested in how the behaviour of storage pests can be affected by their own life history (e.g. age, morph) and interactions between different cue types (colour, odour).
Dr Arnold is a member of NRI's Agriculture, Health & Environment Department, working primarily with the pest behaviour, chemical ecology and ecosystems services research groups. She been lead or co-author on publications about flower colour evolution, insect ecology, and pollinator and storage pest behaviour in international peer-reviewed journals, and is one of the developers and managers of the Floral Reflectance Database.
- Research / Scholarly Interests:
Dr Arnold is interested in insect behaviour and ecology, in particular the interactions between economically important insects (pests, pollinators, etc.) and their environment and food. Key research questions that interest her include:
- How do habitats and ecosystems influence abundance and species richness of insects of agricultural importance?
- How do pests of stored products orient towards host material?
- How do they respond behaviourally to attractive and repellent cues, including pesticidal plants and other possible control strategies?
- How do botanical insecticides and pesticidal plants interact with pre- and post-harvest pests and non-target invertebrates such as bees?
- How do pollinating insects identify food using visual information and other cues, such as the effects of plant appearance or variable illumination on foraging technique?
- What happens when they find that food: how does the composition of different plants' nectar and pollen affect pollinator preferences and fitness?
- Ecology of pollinators in the UK and abroad. In particular, how can pollinator populations be supported and safeguarded in different environments?
- Awards:
- Member of the Royal Entomological Society and South-East Regional Secretary
- Member of the British Ecological Society
- Early Career Researcher Excellence Award 2014/15
- Selected Publications:
- Ojija F., Arnold S.E.J. & Treydte A.C. (2021) Plant competition as a biocontrol method? Possible management tools for suppressing Parthenium hysterophorus. Rangelands. doi: 10.1016/j.rala.2020.12.004
- Elisante F., Ndakidemi P.A., Arnold S.E.J., Belmain S.R., Gurr G.M., Darbyshire I., Xie G., Tumbo J. & Stevenson P.C. (2020) Insect pollination is important but not limiting in a smallholder bean-farming system. PeerJ. 8:e10102. doi: 10.7717/peerj.10102
- Ings T.C. & Arnold S.E.J. (2020) Editorial overview: Pollinator ecology in the Anthropocene. Current Opinion in Insect Science. 38:iii-iv
- Mkenda P.A., Ndakidemi P.A., Stevenson P.C., Arnold S.E.J., Darbyshire I., Belmain S.R., Priebe J., Johnson A.C., Tumbo J & Gurr G.M. (2020) Knowledge gaps among smallholder farmers hinder adoption of conservation biological control. Biocontrol Science and Technology. 30(3):256-277. doi: 10.1080/09583157.2019.1707169
- Stathers T.E., Arnold S.E.J., Rumney C.J. & Hopson C. (2020) Measuring the nutritional cost of insect infestation of stored maize and cowpea. Food Security. 12:285–308. doi: 10.1007/s12571-019-00997-w
- Arnold S.E.J., Forbes S.J., Hall D.R., Farman D.I., Bridgemohan P., Spinelli G.R., Bray D.P., Perry G.B., Grey L., Belmain S.R. & Stevenson P.C. (2019) Floral odors and the interaction between pollinating ceratopogonid midges and cacao Journal of Chemical Ecology. 45(10):869-878. doi: 10.1007/s10886-019-01118-9
- Arnold S.E.J. & Chittka L. (2019) Commentary: Flower colour diversity seen through the eyes of pollinators. Annals of Botany. 124(2):viii-ix. doi: 10.1093/aob/mcz107
- Elisante F., Ndakidemi P.A., Arnold S.E.J., Belmain S.R., Gurr G.M., Darbyshire I., Xi, G., Tumbo J. & Stevenson P.C. (2019) Enhancing knowledge among smallholders on pollinators and supporting field margins for sustainable food security. Journal of Rural Studies. 70:75-86. doi: 10.1016/j.jrurstud.2019.07.004
- Mahot H.C., Mahob R.J., Hall D.R., Arnold S.E.J., Fotso K.A., Membang G., Ewane N., Kemga A., Fiaboe K.K.M., Bilong B.C.F. & Hanna R. (2019) Trap colour affects catches of brown cocoa mirid, Sahlbergella singularis Haglund, in sex pheromone traps in Cameroon cocoa plantations. Crop Protection. 104959. doi: 10.1016/j.cropro.2019.104959
- Mkenda P.A., Ndakidemi P.A., Stevenson P.C., Arnold S.E.J., Belmain S. R., Chidege M., Gurr G.M. & Woolley V.C. (2019) Characterization of hymenopteran parasitoids of Aphis fabae in an African smallholder bean farming system through sequencing of COI ‘mini-barcodes’. Insects. 10(10):331. doi: 10.3390/insects10100331
- Mkenda, P.A., Ndakidemi, P.A., Stevenson, P.C., Arnold, S.E.J., Belmain, S.R., Chidege, M. & Gurr, G.M. (2019) Field margin vegetation in tropical African bean systems harbours diverse natural enemies for biological pest control in adjacent crops. Sustainability. 11(22):6399. doi: 10.3390/su11226399
- Mkenda P.A., Ndakidemi P.A., Mbega E., Stevenson P.C., Arnold S.E.J., Gurr G.M., & Belmain S.R. (2019) Multiple ecosystem services from field margin vegetation for ecological sustainability in agriculture: scientific evidence and knowledge gaps. PeerJ. 7:e8091. doi: 10.7717/peerj.8091
- Ojija F., Arnold S.E.J. & Treydte A.C. (2019) Impacts of alien invasive Parthenium hysterophorus on flower visitation by insects to co-flowering plants. Arthropod-Plant Interactions. 13(5):719-734. doi: 10.1007/s11829-019-09701-3
- Ojija F., Arnold S.E.J. & Treydte A.C. (2019) Bio-herbicide potential of Desmodium uncinatum crude leaf extract against the invasive plant species Parthenium hysterophorus. Biological Invasions. 21(12):3641-3653. doi: 10.1007/s10530-019-02075-w
- Scott-Brown A.S., Arnold S.E.J., Kite G., Farrell I.W., Farman D.I., Collins D.W. & Stevenson P.C. (2019) Mechanisms in mutualisms: A chemically mediated thrips pollination strategy in common elder. Planta. 250(1): 367-379. doi: 10.1007/s00425-019-03176-5
- Bergamo P.J., Telles F.J., Arnold S.E.J. & Brito V.L.G. (2018) Flower colour within communities shifts from overdispersed to clustered along an alpine altitudinal gradient. Oecologia. 188(1):223-235. doi: 10.1007/s00442-018-4204-5
- Arnold S.E.J., Bridgemohan P., Perry G.B., Spinelli G.R., Pierre B., Haughton C., Dockery O., Murray F., Grey L., Murphy S.T., Belmain S.R. & Stevenson P.C. (2018) The significance of climate in the pollinator dynamics of a tropical agroforestry system Agriculture, Ecosystems and Environment. 254:1-9. doi: 10.1016/j.agee.2017.11.013
- Arnold S.E.J., Stevenson P.C. & Belmain S.R. (2016) Shades of yellow: interactive effects of visual and odour cues in a pest beetle. PeerJ. 4:e2219. doi: 10.7717/peerj.2219
- McCarthy E.W., Arnold S.E.J., Chittka, L., Le Comber S.C., Verity R., Dodsworth, S., Knapp S., Kelly L.J., Chase M.W., Baldwin I.T., Kovařík A., Mhiri C., Taylor, L. & Leitch A.R. (2015) The effect of polyploidy and hybridisation on the evolution of floral colour in Nicotiana (Solanaceae). Annals of Botany. 115(7):1117-31. doi: 10.1093/aob/mcv048
- Arnold S.E.J., Stevenson P.C. & Belmain S.R. (2015) Responses to colour and host odour cues in three cereal pest species, in the context of ecology and control. Bulletin of Entomological Research. 105(4):417-25. doi: 10.1017/S0007485315000346
Phone: +44 (0)1634 88 3199
Visiting Fellow
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Dr Sharon Van Brunschot
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- NRI Department:
Livelihoods and Institutions Department
Phone: +44 (0)1634 88 3199
Visiting Fellow in Agricultural Entomology and Plant Pathology
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Dr Tim Chancellor
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- NRI Department:
Livelihoods and Institutions Department
- Qualifications:
PhD, MSc, BA (Hons)
- Biography:
Dr Tim Chancellor is a specialist in the capacity strengthening of individuals, organisations, and institutions. His early work was in sustainable pest and disease management in rice, banana, groundnut, and tomato and he had long-term assignments in Southeast Asia and sub-Saharan Africa. He was also involved in several research and consultancy activities in Latin America. He led NRI’s Plant, Animal & Human Health Group from 2001 to 2006 and from 2007 to 2021 coordinated the Institute’s work on capacity strengthening and partnership development. He helped to develop and manage the £11m continent-wide Strengthening Capacity for Agricultural Research and Development in Africa project funded by DFID (now FCDO). He has maintained his research interests in sustainable agricultural systems and from 2014-2017 he acted as Liaison Scientist for the McKnight Foundation’s Collaborative Crop Research Program in southern Africa. He has a long-standing involvement in Agrinatura, the European Alliance on Knowledge for Agricultural Development, and has worked extensively with the Regional Universities Forum for Capacity Building in Africa (RUFORUM). He is currently a member or RUFORUM’s International Advisory Panel.
- Research / Scholarly Interests:
Tim has contributed to the development of new approaches to capacity strengthening of organizations and institutions, including methodologies for institutional analysis and change management. A key challenge is how to address the capacity needs of the different types of organizations involved in agricultural innovation platforms so that they can work together effectively and achieve their particular objectives. New insights have been gained through initiatives such as the Platform for Africa-Europe Partnership in Agricultural Research for Development.
Tim is interested in the development and application of ecological approaches to insect pest and disease management. His work has involved integrating knowledge on the population dynamics of insect vectors of crop diseases with an understanding of temporal and spatial patterns of disease spread in order to bring about improved disease control. He has also carried out research on the economic, social and cultural factors which influence crop management decisions and on pest and disease control practices utilized by resource-poor farmers.
He is interested in exploring ways to make agricultural information more relevant and more accessible to smallholder farmers, especially those located in remote areas. A particular interest is how to harness the potential of new information and communication technologies for the benefit of smallholders.
- Awards:
- Selected Publications:
- Roshania, R.P., Yates, J., McIntyre, L., Chancellor, T.C.B, Fivian, E., Hill, M., Isoto, R., Marinda, P., Narayanan, S., Whatford, L., Zotor, F., Khandelwal, S. (2023) Assessing needs for interdisciplinarity in agriculture, nutrition, and health education. Global Food Security (37): 1-9, DOI: 10.1016/j.gfs.2023.100691
- Ofori-Kyereh, B.E., Morton, J.F. & Chancellor, T. C. B. (2022) Constraints on farmers’ adaptive capacity to climate variability and change, Climate and Development, 15:4, 312-324, DOI: 10.1080/17565529.2022.2083546
- Nicklin, C., Chancellor, T., Garcia, A., Gohole, L., Haussmann, B., Kaijage, P., Maland Cady, J., Miller, K., Moore, M., Nelson, R., Powers, M., & Somé, B. (2021). Funder-Initiated Communities of Practice as a Means for Sharing and Creating Knowledge in Order to Strengthen the Adaptive Capacity of Systems. The Foundation Review, 13(1), DOI: 10.9707/1944-5660.1554
- Chancellor, Tim C.B., Priebe, Jan S.H. Mkenda, & Prisila A. (2019) Crowdsourcing Field Observations from Smallholder Farmers in Tanzania Using Interactive Voice Response. Outlooks on Pest Management (30:3): 104-110, DOI: 10.1564/v30_jun_02
- Mukanga, M., Matumba, L., Makwenda, B., Alfred, S., Sakala, W., Kanenga, K., Chancellor, T., Mugabe, J. & Bennett, B. (2019) Participatory evaluation of groundnut planting methods for pre-harvest aflatoxin management in Eastern Province of Zambia. Cahiers Agricultures 28 (1), DOI: 10.1051/cagri/2019002
- Matumba, L. Singano, L.,Tran, B., Mukanga, M., Makwenda, B., Kumwenda, W., Mgwira, S., Phiri, S., Mataya, F., Mthunzi, T., Alfred, S., Madzivhandila, T., Mugabe, J., Bennett, B., & Chancellor, T. (2018) Managing aflatoxin in smallholder groundnut production in Southern Africa: Paired comparison of the windrow and Mandela cock techniques. Crop Protection 112: 18-23.
Phone: +44 (0)1634 88 3199
Visiting Fellow in Capacity Strengthening and Partnerships
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Dr Lionel Feugère
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- NRI Department:
Livelihoods and Institutions Department
- Qualifications:
BA Physics, MSc, PhD, PGCHE equivalent
- Biography:
Dr Lionel Feugère joined the University of Greenwich in March 2019. He studied Acoustics, Signal Processing and Computer Science at the University Paris Sud 11, IIT-Bombay and University Paris VI. He passed his Master thesis in 2009 in the industry, specializing in automatic detection and classification of syllables for Karaoke games, and his Ph. D. degree in 2013 about the gestural control of synthesized singing voice, under the supervision of Christophe d’Alessandro at LIMSI-CNRS.
He has worked with Boris Doval (Sorbonne University) on automatic categorization of various vocal productions from ethno-musicological audio recordings and with Christophe d’Alessandro and Olivier Perrotin (CNRS) on glottal flow models for singing voice synthesis. Then, he started to work on insect acoustic communication with Gabriella GIbson (NRI), investigating mosquito hearing with Olivier Roux (IRD) and the relationship between mosquito’s mating chase flight trajectory and acoustic behaviours with Rajat Mital (John Hopkins).
He has taught signal processing and computer science in several universities and institutions in France, participated in general public conferences and co-created the Chorus Digitalis, a musical ensemble to illustrate the capabilities of their research in singing synthesis and gestural control, which toured worldwide in scientific and musical venues between 2011 and 2016.
Previous positions:
- 2017-2019 Research fellow in bioacoustics, Institut de Recherche pour le Développement (IRD)
- 2015-2016 Research fellow in singing synthesis, LIMSI-CNRS
- 2014-2015 Research fellow in automatic audio indexing, UPMC
- 2013-2014 Lecturer in signal processing (postgraduate studies), Engineering department, UPMC
- 2009-2013 Ph.D. student and lecturer (undergraduate), LIMSI-CNRS ; Univ. Paris-Est Créteil
- 2009 Research student in automatic speech recognition, Voxler
- 2008 Research student in audio information retrieval, LIMSI-CNRS
- 2007 Research student in music information retrieval, University of Pompeu Fabra
- 2006 Research student in mechanical engineering, ENSTA-ParisTech
- Research / Scholarly Interests:
Lionel Feugère’s research interests are the uses of computational audio techniques and interactive audio-visual systems 1) to study sound communication in insects, 2) to automatically retrieve information from audio recordings, and 3) to design new models of digital musical instrument.
Recently, Lionel aims to gather behavioural entomology and acoustics data to understand the complex sound production and auditory communication found in some animals and to use this knowledge to reduce the impact of pest insects responsible for major public health issues, particularly in economically under-privileged countries.
Since 2017, in a complementary collaboration with Professor of Medical Entomology Gabriella Gibson, Lionel is focusing on mosquitoes which are known both to have one of the most sensitive auditory organs among the invertebrates and to be vectors of serious diseases in humans and animals. They have worked with Olivier Roux from the Institut de Recherche pour le Dévelopement on the “ANOFEEL: How ANOpheles Females sEEk maLes?” project which aims to study visual, chemical and acoustic cues involved in mosquito communication. In 2019, Gabriella and Lionel were awarded a grant from the Human Frontier Science Program with Prof. Rajat Mital (PI) and Dr Jung-Hee Seo from John Hopkins University to decode the biomechanics of flight-tone based acoustic communication in mosquitoes.
- Awards:
2019 Three-year funding from the Human Frontier Science Program for Decoding the Biomechanics of Flight-Tone Based Acoustic Communication in Mosquitoes.
2015 First Prize of the Margaret Guthman Musical Instrument Competition.
One of the most prestigious International contest on new musical instruments (https://guthman.gatech.edu/), awarded by Georgia Tech Center for Music Technology (Atlanta) for the digital musical instrument of gesture-control singing voice synthesizer “Cantor Digitalis” (with C. d’Alessandro, B. Doval and O. Perrotin, http://cantordigitalis.limsi.fr/)
2014 Finalists of the international competition on musical software (Lomus), awarded by the French society of computer music (AFIM) for the open-source digital musical instrument of gesture-control singing voice synthesizer “Cantor Digitalis”
(with C. d’Alessandro, B. Doval and O. Perrotin)
2012 Young researcher award “Science et Musique”, awarded by IRISA lab and the French society of computer music (AFIM)
- Selected Publications:
D'Alessandro, Christophe, Delalez, Samuel, Doval, Boris and Feugère, Lionel (2019) Les instruments chanteurs. Acoustique & Techniques (89). pp. 36-43
D'Alessandro, Christophe, Feugère, Lionel, Perrotin, Olivier, Delalez, Samuel and Doval, Boris (2018) Le contrôle des instruments chanteurs. In: 14ème Congrès Français d’Acoustique (CFA ’18). Société Française d'Acoustique, Le Havre, France, pp. 1249-1255
Amy de la Bretèque, Estelle, Doval, Boris, Feugère, Lionel and Moreau-Gaudry, Louis (2017) Liminal utterances and shapes of sadness: Local and acoustic perspectives on vocal production among the Yezidis of Armenia. Yearbook for Traditional Music, 49. pp. 129-148. ISSN 0740-1558 (doi:https://doi.org/10.5921/yeartradmusi.49.2017.0129)
Feugère, Lionel, d'Alessandro, Christophe, Doval, Boris and Perrotin, Olivier (2017) Cantor Digitalis: chironomic parametric synthesis of singing. EURASIP Journal on Audio, Speech, and Music Processing, 2017 (2). ISSN 1687-4714 (Print), 1687-4722 (Online) (doi:https://doi.org/10.1186/s13636-016-0098-5, PDF: https://asmp-eurasipjournals.springeropen.com/track/pdf/10.1186/s13636-016-0098-5)
Goudard, Vincent, Genevois, Hugues and Feugère, Lionel (2017) Stratégie de contrôle de la hauteur dans les instruments de musique numériques. Revue Francophone d'Informatique et Musique (5) (HTML: http://revues.mshparisnord.org/rfim/index.php?id=425)
Feugère, Lionel, d'Alessandro, Christophe, Delalez, Samuel, Ardaillon, Luc and Roebel, Axel (2016) Evaluation of singing synthesis: Methodology and case study with concatenative and performative systems. In: Proceedings Interspeech 2016. International Speech Communication Association, San Francisco, pp. 1245-1249. (doi:https://doi.org/10.21437/Interspeech.2016-1248, PDF: https://www.isca-speech.org/archive/Interspeech_2016/pdfs/1248.PDF)
Feugère, Lionel, Doval, Boris and Mifune, Marie-France (2015) Using pitch features for the characterization of intermediate vocal productions. In: 5th International Workshop on Folk Music Analysis (FMA). University Pierre and Marie Curie, Paris. ISBN 979-10-95209-00-3 (PDF: https://hal.archives-ouvertes.fr/hal-02113080)
Feugère, Lionel and d'Alessandro, Christophe (2015), Contrôle gestuel de la synthèse vocale: instruments Cantor Digitalis et Digitartic. Traitement du signal, 32 (4). pp. 417-442. (doi:https://doi.org/10.3166/ts.32.417-442, PDF: https://hal.archives-ouvertes.fr/hal-01679397/document)
D'Alessandro, Christophe, Feugère, Lionel, Le Beux, Sylvain, Perrotin, Olivier and Rilliard, Albert (2014) Drawing melodies: Evaluation of chironomic singing synthesis. The Journal of the Acoustical Society of America, 135 (6). pp. 3601-3612. ISSN 0001-4966 (doi:https://doi.org/10.1121/1.4875718)
Goudard, Vincent, Genevois, Hugues and Feugère, Lionel (2014) On the playing of monodic pitch in digital music instrument. In: 40th International Computer Music Conference (ICMC) joint with the 11th Sound & Music Computing conference (SMC). Michigan Publishing, Athens, pp. 1418-1425 (PDF: https://hal.archives-ouvertes.fr/hal-02113086/document)
Feugère, Lionel and d'Alessandro, Christophe (2014) Rule-based performative synthesis of sung syllables. In: Proceedings of the International Conference on New Interfaces for Musical Expression. Goldsmiths, University of London, London, United Kingdom, pp. 86-87 (PDF: http://www.nime.org/proceedings/2014/nime2014_522.pdf)
Feugère, Lionel, d’Alessandro, Christophe and Doval, Boris (2013) Performative Voice Synthesis for Edutainment in Acoustic Phonetics and Singing: A Case Study Using the “Cantor Digitalis”. In: Mancas M., d’ Alessandro N., Siebert X., Gosselin B., Valderrama C., Dutoit T. (eds) Intelligent Technologies for Interactive Entertainment. INTETAIN 2013. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 124. Springer, Cham (doi:https://doi.org/10.1007/978-3-319-03892-6_20, PDF: http://hal.archives-ouvertes.fr/hal-00932116/document)
Feugère, Lionel and d’Alessandro, Christophe (2013), Digitartic: bi-manual gestural control of articulation in performative singing synthesis, 13th International Conference on New Interfaces for Musical Expression, Daejeon, Korea Republic, May 27-30, 2013, 331-336. ISSN 2220-4806 (PDF: https://hal.archives-ouvertes.fr/hal-01000268/document)
Le Beux, Sylvain, Feugère, Lionel and d’Alessandro, Christophe (2011), Chorus digitalis : experiment in chironomic choir singing, 12th Annual Conference of the International Speech Communication Association (INTERSPEECH 2011), Firenze, Italy, August 27-31, 2011, 2005-2008. ISSN 1990−9772 (PDF: https://hal.archives-ouvertes.fr/hal-01712575/document)
Phone: +44 (0)1634 88 3199
Visiting Fellow
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Martin Fowler
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- NRI Department:
Livelihoods and Institutions Department
Phone: +44 (0)1634 88 3199
Visiting Fellow
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