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Who we are

With research staff from more than 60 countries, and offices across the globe, IFPRI provides research-based policy solutions to sustainably reduce poverty and end hunger and malnutrition in developing countries.

researcher spotlight

Agnes Quisumbing

Agnes Quisumbing is a Senior Research Fellow in the Poverty, Gender, and Inclusion Unit. She co-leads a research program that examines how closing the gap between men’s and women’s ownership and control of assets may lead to better development outcomes.

Where we work

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Where we work

IFPRI currently has more than 600 employees working in over 80 countries with a wide range of local, national, and international partners.

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Columbia University is a world-renowned university at the forefront of research and seeks to analyze and solve the prominent global issues. Columbia funds several research and coordination teams to conduct integrated assessments of climate, crop, and economic impacts of variable and changing climate. Columbia engages the best thinkers in agriculture from all over the globe to contribute to their critical research.

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Publications

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Journal Article

Climate variability and simultaneous breadbasket yield shocks as observed in long-term yield records

2023Anderson, Weston; Baethgen, Walter; Capitanio, Fabian; Ciais, Philippe; Cook, Benjamin I.; You, Liangzhi
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Climate variability and simultaneous breadbasket yield shocks as observed in long-term yield records

That climate variability and change can potentially force multiple simultaneous breadbasket crop yield shocks has been established. But research quantifying the mechanisms behind such simultaneous shocks has been constrained by short records of crop yields. Here we compile a dataset of subnational crop yields in 25 countries dating back to 1900 to study the frequency and trends in multiple breadbasket yield shocks and how large-scale climate anomalies on interannual timescales have affected multiple breadbasket yield shocks over the last century. We find that major simultaneous breadbasket yield shocks have occurred in at least three, four, or five of nine breadbaskets 10.3%, 2.3% and 1.1% of the time for maize and 18.4%, 4.6% and 2.3% of the time for wheat. Furthermore, we find that multiple breadbasket yield shocks decreased in frequency even as those breadbaskets experience increasingly frequent climate-related shocks. For both maize and wheat breadbaskets, there were fewer simultaneous yield shocks during the 1975–2017 time period as compared to 1931–1975. Finally, we find that interannual modes of climate variability – such as the El Niño Southern Oscillation (ENSO), the Indian Ocean Dipole (IOD), and the North Atlantic Oscillation (NAO) – have all affected the relative probability of simultaneous yield shocks in pairs of breadbaskets by up to 20–40% in both maize and wheat breadbaskets. While past literature has focused on the effects of ENSO, we find that at the global scale the NAO affects the overall number of wheat yield shocks most strongly despite only affecting northern hemisphere breadbaskets.

Year published

2023

Authors

Anderson, Weston; Baethgen, Walter; Capitanio, Fabian; Ciais, Philippe; Cook, Benjamin I.; You, Liangzhi

Citation

Anderson, Weston; Baethgen, Walter; Capitanio, Fabian; Ciais, Philippe; Cook, Benjamin I.; You, Liangzhi; et al. 2023. Climate variability and simultaneous breadbasket yield shocks as observed in long-term yield records. Agricultural and Forest Meteorology 331(15 March 2023): 109321. https://doi.org/10.1016/j.agrformet.2023.109321

Keywords

Climate Variability; Climate Change; Bread; Yields; Shock; Maize; Wheat; El Niño; Oscillatory Flow; North Atlantic; Indian Ocean

Language

English

Access/Licence

Open AccessCC-BY-NC-ND-4.0

Links

https://doi.org/10.1016/j.agrformet.2023.109321 Source record

Record type

Journal Article

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Journal Article

Synchronous crop failures and climate-forced production variability

2019Anderson, W. B.; Seager, R.; Baethgen, W.; Cane, M.; You, Liangzhi
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Synchronous crop failures and climate-forced production variability

Large-scale modes of climate variability can force widespread crop yield anomalies and are therefore often presented as a risk to food security. We quantify how modes of climate variability contribute to crop production variance. We find that the El Niño Southern Oscillation (ENSO), the Indian Ocean Dipole (IOD), tropical Atlantic variability (TAV), and the North Atlantic Oscillation (NAO) together account for 18, 7, and 6% of globally aggregated maize, soybean, and wheat production variability, respectively. The lower fractions of global-scale soybean and wheat production variability result from substantial but offsetting climate-forced production anomalies. All climate modes are important in at least one region studied. In 1983, ENSO, the only mode capable of forcing globally synchronous crop failures, was responsible for the largest synchronous crop failure in the modern historical record. Our results provide the basis for monitoring, and potentially predicting, simultaneous crop failures.

Year published

2019

Authors

Anderson, W. B.; Seager, R.; Baethgen, W.; Cane, M.; You, Liangzhi

Citation

Anderson, W. B.; Seager, R.; Baethgen, W.; Cane, M.; and You, Liangzhi. 2019. Synchronous crop failures and climate-forced production variability. Science Advances 5(7): eaaw1976. https://advances.sciencemag.org/content/5/7/eaaw1976

Keywords

Spatial Data; Agricultural Production; Climate; Crop Production; Crop Losses; Climate Change

Language

English

Access/Licence

Open AccessCC-BY-NC-4.0

Source

Source record

Record type

Journal Article

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Journal Article

Comparison of a new multiplex immunoassay for measurement of ferritin, soluble transferrin receptor, retinol-binding protein, c-reactive protein and α1-acid-glycoprotein concentrations against a widely-used s-ELISA method

2018Karakochuk, Crystal; Henderson, Amanda; Samson, Kaitlyn; Aljaadi, Abeer; Devlin, Angela; Becquey, Elodie; Wirth, James; Rohner, Fabian
Details

Comparison of a new multiplex immunoassay for measurement of ferritin, soluble transferrin receptor, retinol-binding protein, c-reactive protein and α1-acid-glycoprotein concentrations against a widely-used s-ELISA method

Recently, a multiplex ELISA (Quansys Biosciences) was developed that measures ferritin, soluble transferrin receptor (sTfR), retinol-binding protein (RBP), C-reactive protein (CRP), α1-acid glycoprotein (AGP), thyroglobulin, and histidine-rich protein 2. Our primary aim was to conduct a method-comparison study to compare five biomarkers (ferritin, sTfR, RBP, CRP, and AGP) measured with the Quansys assay and a widely-used s-ELISA (VitMin Lab, Willstaett, Germany) with use of serum samples from 180 women and children from Burkina Faso, Cambodia, and Malaysia. Bias and concordance were used to describe the agreement in values measured by the two methods. We observed poor overall agreement between the methods, both with regard to biomarker concentrations and deficiency prevalence estimates. Several measurements were outside of the limit of detection with use of the Quansys ELISA (total n = 42 for ferritin, n = 2 for sTfR, n = 0 for AGP, n = 5 for CRP, n = 22 for RBP), limiting our ability to interpret assay findings. Although the Quansys ELISA has great potential to simplify laboratory analysis of key nutritional and inflammation biomarkers, there are some weaknesses in the procedures. Overall, we found poor comparability of results between methods. Besides addressing procedural issues, additional validation of the Quansys against a gold standard method is warranted for future research

Year published

2018

Authors

Karakochuk, Crystal; Henderson, Amanda; Samson, Kaitlyn; Aljaadi, Abeer; Devlin, Angela; Becquey, Elodie; Wirth, James; Rohner, Fabian

Citation

Karakochuk, Crystal; Henderson, Amanda; Samson, Kaitlyn; Aljaadi, Abeer; Devlin, Angela; Becquey, Elodie; Wirth, James; and Rohner, Fabian. 2018. Comparison of a new multiplex immunoassay for measurement of ferritin, soluble transferrin receptor, retinol-binding protein, c-reactive protein and α1-acid-glycoprotein concentrations against a widely-used s-ELISA method. Diagnostics 8(1), 13. https://doi.org/10.3390/diagnostics8010013

Keywords

Immunoassay; Trace Elements; Inflammation; Nutrition; Nutritional Status; Evaluation; α1-acid Glycoprotein; Ferritin; Retinol

Language

English

Access/Licence

Open AccessCC-BY-4.0

Links

https://doi.org/10.3390/diagnostics8010013 Source record

Project

Agriculture for Nutrition and Health

Record type

Journal Article

Events

Science Forum 2018
IFPRI at External Event

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October 10 to 12, 2018

Science Forum 2018

IFPRI researchers and their case studies contribute to discussions on substantial interactions between the Sustainable Development Goals, the role of agricultural research in augmenting synergies, and managing trade-offs.