CHIZU — the atlas of coffee research
Coffee research in Sierra Leone
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 14 papers are 14 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.
Sierra Leone 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
1980–2026
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
- Arabica-like flavour in a heat-tolerant wild coffee species2021cited 59
- Effect of Tree Shade on Coffee Crop Production2015cited 53open access
- Lost and Found: Coffea stenophylla and C. affinis, the Forgotten Coffee Crop Species of West Africa2020cited 34open access
- Ethnobotanical survey of medicinal plants utilized by forest edge communities in southern Sierra Leone2022cited 12open access
- Prevalence, Awareness and Risk Factors of Hypertension among Health Workers at the Connaught Teaching Hospital, Sierra Leone.2020cited 11open accessno DOI
- Unveiling the Genetic Diversity and Demographic History of Coffea stenophylla in Sierra Leone Using Genotyping-By-Sequencing2024cited 9open access
- ESTIMATION OF REFERENCE EVAPOTRANSPIRATION FOR COFFEE IRRIGATION MANAGEMENT: THE CASE OF BRAZILIAN CERRADO2018cited 5open access
- Phenotypic diversity of wild Sierra Leonean coffee (Coffea stenophylla) collected from Kenema and Moyamba districts2023cited 3open access
- Genetic diversity of coffee germplasm in Sierra Leone: implications for conservation and breeding programs2023cited 3open access
- Genetic basis of phenotypic diversity in C. stenophylla: a stepping stone for climate-adapted coffee cultivar development2025cited 2open access
Which stage of coffee
Only 30.2% of the whole index carries a stage label. Of this country's 14 papers, 4 carry one. The breakdown below is about those 4 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 14 papers, 13 carry one. The breakdown below is about those 13 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. Sierra Leone has 14 — a factor of 1,589.
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