CHIZU — the atlas of coffee research
Coffee research in Congo - Kinshasa
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 64 papers are 64 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.
Congo - Kinshasa 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
1971–2026
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
- Coffee waste as an alternative fertilizer with soil improving properties for sandy soils in humid tropical environments2010cited 109
- Development and evaluation of a genome‐wide Coffee 8.5K SNP array and its application for high‐density genetic mapping and for investigating the origin of Coffea arabica L.2018cited 70open access
- Developing core collections to optimize the management and the exploitation of diversity of the coffee Coffea canephora2014cited 55
- Phylogenomic analysis clarifies the evolutionary origin of Coffea arabica2020cited 40open access
- Ecological and genomic vulnerability to climate change across native populations of Robusta coffee (Coffea canephora)2022cited 37
- Genetic diversity of wild and cultivated Coffea canephora in northeastern DR Congo and the implications for conservation2021cited 28open access
- Drivers of species richness and abundance of butterflies in coffee–banana agroforests in Uganda2012cited 27open access
- Influence of functional traits on foraging behaviour and pollination efficiency of wild social and solitary bees visiting coffee (Coffea canephora) flowers in Uganda2014cited 24
- Micro, local, landscape and regional drivers of bee biodiversity and pollination services delivery to coffee (Coffea canephora) in Uganda2012cited 22open access
- The Yeast Flora of Fermenting Robusta Coffee1971cited 22
Which stage of coffee
Only 30.2% of the whole index carries a stage label. Of this country's 64 papers, 12 carry one. The breakdown below is about those 12 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 64 papers, 62 carry one. The breakdown below is about those 62 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. Congo - Kinshasa has 64 — a factor of 348.
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