Institute for Sustainable Food Systems (ISFS)

Isaac Ankamah-Yeboah

PhD Student, Institute of Food and Resource Economics, University of Copenhagen, Denmark

Isaac Ankamah-Yeboah's current work focuses on price formation, market segmentation and consumer demand of seafood markets. He is a visiting scholar working with Frank Asche while at the University of Florida.

He completed a joint MSC degree in Agricultural, Food and Environmental Policy Analysis, combining an MSC in Food and Resource Economics from the University of Bonn, Germany and an MSC in Business and Economics from the Swedish University of Agricultural Science, Uppsala, Sweden. He is interested in value chain research, eco-labeling, price analysis and consumer demand.

Ole Bergesen

is a Research Fellow Department of Industrial Economics, Risk Management and Planning, University of Stavanger, Norway. He arrived in August 2017 for a year as an ISFS visiting scholar working on innovation research on aquaculture and econometrics.

Yang Han

Associate Researcher and Deputy Director, Chinese Academy of Fishery Sciences
Fishery Development Strategy and Research Centre, Beijing, China

Elnazsadat Hooseiniaghdam

worked with Gerrit Hoogenboom to incorporate alfalfa into the DSSAT model.


Brecht Devleesschauwer

Brecht Devleesschauwer conducts research on burden of disease and risk assessment methodologies. He applies these methods to study the health and economic impact of public and animal health threats. His work has led to new insights in the epidemiology and burden of foodborne and zoonotic diseases.Prior to his time at UF, Brecht Devleesschauwer held a post-doc position at Ghent University, Belgium. He is member of the WHO Foodborne Disease Burden Epidemiology Reference Group, chair of the Epidemiology working group of CYSTINET (COST Action TD1302), and co-chair of the Risk Forecasting working group of EURO-FBP (COST Action FA1408).He received his Ph.D. degrees from Ghent University and Université catholique de Louvain, M.Sc. degrees from Ghent University and KULeuven, and B.Sc. degree from Ghent University.

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Mohammad Hassan Fallah

is a PhD Candidate from Ferdowski University of Mashhad, Iran who arrived in April 2017 for a 6 month collaboration with Dr. Hoogenboom in crop yield - climate interaction, especially yield gap analysis and climate change impacts.

Erlendur Johnsson

is a Ph.D. student from the University of Stavanger, Norway.  He spent a year at ISFS working with Frank Asche on economics of commodities from August 2016-July 2017.

Prakash Kumar

PhD Student, Science and Management of Climate Change, University of Venice CA’Foscari and CMCC Bologna

Prakash Kumar Jha is a PhD student in the PhD program in Science and Management of Climate Change jointly conducted by the University of Venice CA’Foscari and CMCC Bologna. He is doing research in the area of using seasonal forecasts from dynamic climate models to predict rice yield for Nepal’s Terai using DSSAT. He is working with Professor Gerrit Hoogenboom in the University of Florida to link dynamic climate models with DSSAT.

Before joining this PhD program, he completed an MSc in climate change adaptation and conducted a study identifying the impact of climate change on urban water supply. Also, he managed a research project in the area of Reducing emissions from deforestation and forest degradation (REDD) and community forestry. He has 10 years of experience in facilitating community forestry management, livelihoods improvement and participatory development. He has published scientific papers in refereed journals, book chapters and proceedings.

Dr. Kwang Soo Kim

is a visiting scientist from Seoul National University who arrived on a sabbatical July 25, 2016; he is working with Gerrit Hoogenboom.

Ursula Landazuri-Tveteras

is a Research Fellow in the Department of Industrial Economics, Risk Management and Planning, University of Stavanger, Norway.  She studies salmon market price transmission in the salmon supply chain and arrived in August 2017 for a one year visit to ISFS.

Xiaolin Li

is a PhD candidate at China Agricultural University. She arrived in September 2017 for a year visit to work with Gerrit Hoogenboom on modeling crop production and water productivity impact studies.

Baohua Liu

is a PhD student at China Agricultural University. She arrived in September 2017 for a year visit to work with Gerrit Hoogenboom. She will be using DSSAT to compare tradeoffs among maize yield potential, yield gap, and limiting factors between China and the US, as well as the impact of climate change on maize productivity and pathways for adapatation.

Xinqiang Liang

was a visiting scientist from Zhejiang University in Hangzhou China, who worked with Karen Garrett.

Olegario Muniz

Joined was as a visiting scholar from April 2017-2018. He collaborated with Dr. Sanchez during his time here to translate Dr. Sanchez' tropical soils book into Spanish.  Dr. Muniz is a Senior Researcher at the Soil Institute of Havana, Ministry of Agriculture, in Cuba.  He is a Senior Member of the Cuban Academy of Science and has published 110 papers and 4 books on soil fertility, heavy metals pollution, micronutrients, and soil management.

Willingthon Pavan

Joined our group as a visiting scholar in January 2017 to collaborate with Dr. Hoogenboom for one year.  Dr. Pavan is a Professor in Applied Computing at the University of Passo Fundo, Brasil. Dr. Pavan is working to couple crop and disease models using a variety of computational approaches.  He is developing monolithic and fully coupled crop models, integrating both the DSSAT platform and a generic disease model. He earned his PhD in agronomy (phytopathology) at the University of Passo Fundo, and completed post-doctoral training at UF (2008-2009), where he developed solutions to help growers and stakeholders make decisions.

Ravin Poudel

graduated with his PhD in August 2018. He worked in Karen Garrett's lab> He produced high-quality innovative research on high-quality innovative research on microbiome networks, rhizobiome of tomato, the oak phyllosphere, soil fungal community networks, and virome networks.

Sigbjorn Tveteras

is a Professor in the Department of Industrial Economics, Risk Management and Planning, University of Stavanger, Norway. He is visiting ISFS for a year and arrived August 2017. He studies international seafood trade and food security, with additional work on sustainability, pricing, and consumer behavior. Website >

Omer Vanli

is a graduate student visiting from Turkey. He arrived in August 2017 to work with Gerrit Hoogenboom. He is working with the CRAFT toolbox and DSSAT on wheat. He plans to study genetic coefficient determination and the effects of climate change on crops upon his return to Turkey. He hopes to train others on the CRAFT toolbox.

Jinghua Xie

is an associate professor at the University of Tromso in Norway. She arrived in July 2017 to work with Frank Asche.  Dr. Xie has focused her research on seafood production and markets. More infomation from her home institution is available here.

Thomas Frank Ndjomatchoua

Ph.D. Student, Department of Physics, University of Yaoundé I and icipe Nairobi

Thomas Frank Ndjomatchoua is a Ph.D. student in the ARPPIS Ph.D. program at icipe-African Insect Science for Food and Health, Nairobi, Kenya. His research is jointly conducted with the University of Yaoundé, Yaoundé, Cameroon. As part of his study he developing a pest module for the CSM-CERES-Maize model of DSSAT for forecasting yield losses due to Lepidopteran stem borers in maize, with a practical implementation for agriculture in Kenya. He is working with Professor Gerrit Hoogenboom in the Institute for Sustainable Food System to incorporating pest infestation models in DSSAT.

Before joining this Ph.D. program, he completed an MSc in Mechanics and conducted a study identifying the impact of nonlinear hydrogen bonds in the energy transports in proteins. Also, he is interested in any topic covering nonlinear dynamics, chaos, solitons, pests and diseases modelling. He has published scientific papers in peer-reviewed journals.

Irfan Rasool Nasir

visited with Dr. Hoogenboom from the University of Agriculture in Faisalabad, Pakistan.  His PhD project work is: "Assessing the production sustainability of rice genotypes to thermo-temporal changes employing modeling techniques."

Nasrin Salehnia

visited with Prof. Gerrit Hoogenboom from Ferdowsi University in Mashhad, Iran. She is currently working on Monitoring and prediction of drought and climate change impacts, developing software, and downscaling GCM models using statistical and dynamical methods.

Asmat Ullah

was a Visiting Scientist and PhD Scholar from Agro Climatology Lab., University of Agriculture, Faisalabad-Pakistan. He worked with Gerrit Hoogenboom on the use and application of crop simulation models and decision support systems including DSSAT (CSM-CERES-Millet), emphasizing local applications for crop production and resource management in Pakistan, especially as it relates to climate change.

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John Hernandez Nopsa

Institute for Sustainable Food Systems, University of Florida

Plant Pathology and Impact Network Analysis, University of Florida

John Hernandez Nopsa conducts research in plant disease epidemiology and models plant diseases in a range of pathosystems. He also has considerable experience as a field plant pathologist. Recent work includes the use of multilayer network models to understand the complexity of potato seed systems, and the potential spread of pest, diseases, and mycotoxins of stored grains in transportation networks.

Prior to joining the UF Garrett Lab, John Hernandez Nopsa was a postdoctoral researcher in the Garrett Lab at Kansas State University. He was also a USDA-ARS postdoctoral researcher in Corvallis, Oregon. John received his Ph.D. in Plant Pathology from the University of Nebraska, Lincoln, and his M.S. in Plant Pathology and B.S. in Biology from the National University of Colombia.  He now works for Corpoica.