CHIZU — the atlas of coffee research
Coffee research in Ethiopia
Two limits come with this count. Only 100,474 of the 190,643 searchable papers (52.7%) carry an author affiliation country. The other 90,169 (47.3%) carry none. So these 1,962 papers are 1,962 out of the 100,474 whose affiliation is known. And a co-authored paper is counted once for every country its authors sit in. Per-country counts therefore do not add up to the whole.
Ethiopia is a coffee-producing country.
Check it yourself
This is not our word for it. You can run the same query against the same index.
When they were written
1957–2026
Years before 1600 are treated as unknown. The upstream data (OpenAlex) sometimes writes 1400 when the year is missing, and that is a placeholder, not a measurement.
Where they appeared
Top 8 sources (journals and repositories)
Most cited
10 papers, most cited first
- The Impact of Climate Change on Indigenous Arabica Coffee (Coffea arabica): Predicting Future Trends and Identifying Priorities2012cited 460open access
- Pest Management Strategies in Traditional Agriculture: An African Perspective2000cited 409
- The determinants and economic impacts of membership in coffee farmer cooperatives: recent evidence from rural Ethiopia2017cited 372
- Resilience potential of the Ethiopian coffee sector under climate change2017cited 272
- Measurement of caffeine in coffee beans with UV/vis spectrometer2007cited 267
- Post-harvest loss and quality deterioration of horticultural crops in Dire Dawa Region, Ethiopia2016cited 190open access
- Current status of coffee (Coffea arabica L.) genetic resources in Ethiopia: implications for conservation2008cited 185
- Prevalence, impacts and medical managements of premenstrual syndrome among female students: cross-sectional study in college of health sciences, Mekelle University, Mekelle, Northern Ethiopia2014cited 177open access
- Chemical, physical and biological methods to convert lignocellulosic waste into value-added products. A review2022cited 175
- Effect of altitude on biochemical composition and quality of green arabica coffee beans can be affected by shade and postharvest processing method2017cited 167
Which stage of coffee
Only 30.2% of the whole index carries a stage label. Of this country's 1,962 papers, 829 carry one. The breakdown below is about those 829 papers only — the rest were never candidates for it.
One paper can carry several labels, so the breakdown adds up to more than that number.
Which field
Only 75.9% of the whole index carries a field label. Of this country's 1,962 papers, 1,717 carry one. The breakdown below is about those 1,717 papers only — the rest were never candidates for it.
One paper can carry several labels, so the breakdown adds up to more than that number.
What language
"undetermined" means the upstream record carried no language. We did not guess one.
Knowledge is not evenly spread
Counting only papers whose author affiliation is known, the largest is Indonesia with 22,248. Ethiopia has 1,962 — a factor of 11.
That gap does not follow where coffee is grown. Research gathers where the means to do research are, not where the coffee is. Making that visible is why CHIZU exists.
Other countries
Indonesia 22,248United States 17,988Brazil 10,857United Kingdom 5,569China 4,887India 3,542Germany 3,185Italy 3,111France 3,072Japan 2,822Colombia 2,489Spain 2,363