2021 tables: Institutions - Nature & Science

The 2021 tables are based on Nature Index data from 1 January 2020 to 31 December 2020.

Table criteria

# Institution Share 2019 Share 2020 Count 2020 Change in Adjusted Share 2019-2020*
1 University of the Witwatersrand, Johannesburg (Wits University), South Africa 0.32 1.40 8 304.0%
2 University of Cape Town (UCT), South Africa 0.12 0.95 17 635.7%
3 University of Johannesburg (UJ), South Africa 0.09 0.31 2 192.4%
4 African Institute for Mathematical Sciences (AIMS), South Africa 0.01 0.15 1 1,996.9%
5 North-West University (NWU), South Africa 0.11 0.08 2 -32.4%
6 SKA South Africa, South Africa 0.85 0.07 1 -92.3%
7 University of KwaZulu-Natal (UKZN), South Africa 0.24 0.06 3 -77.8%
8 University of the Free State (UFS), South Africa 0.01 0.05 2 389.5%
9 Nelson Mandela University (NMU), South Africa 0.10 0.05 1 -57.7%
10 South African National Parks, South Africa 0.00 0.04 1 2,197.1%
11 Rhodes University (RU), South Africa 0.21 0.04 2 -82.5%
12 South Africa Department of Arts and Culture (DAC), South Africa 0.04 1 N/A
13 Walter Sisulu University (WSU), South Africa 0.04 1 N/A
14 Council for Scientific and Industrial Research (CSIR), South Africa 0.03 1 N/A
15 University of Pretoria (UP), South Africa 0.48 0.03 2 -94.1%
16 Department of Science and Technology (DST), South Africa 0.01 0.03 2 94.1%
17 Department of Environment, Forestry and Fisheries (DEFF), South Africa 0.05 0.02 1 -58.6%
18 South African National Biodiversity Institute (SANBI), South Africa 0.02 2 N/A
19 National Health Laboratory Service (NHLS), South Africa 0.00 0.02 2 1,051.6%
20 University of the Western Cape (UWC), South Africa 0.01 0.02 2 119.8%
21 South African Medical Research Council (SAMRC), South Africa 0.01 0.01 2 -22.2%
22 Centre for Proteomic and Genomic Research (CPGR), South Africa 0.04 0.01 1 -80.2%
23 South African Association for Marine Biological Research (SAAMBR), South Africa 0.01 1 N/A
24 Stellenbosch University (SU), South Africa 0.03 0.01 3 -78.9%
25 South African Institute for Aquatic Biodiversity (SAIAB), South Africa 0.01 0.00 1 -73.1%
26 NRF iThemba Laboratory for Accelerator-Based Sciences (IThemba Labs), South Africa 0.00 1 N/A
27 Cape Peninsula University of Technology (CPUT), South Africa 0.01 0.00 1 -82.7%

Footnote

Each year, the Nature Index publishes tables based on counts of high-quality research outputs in the previous calendar year. Users please note:

  1. The data behind the tables are based on a relatively small proportion of total research papers, they cover the natural sciences only and outputs are non-normalized (that is, they don’t reflect the size of the country or institution, or its overall research output).
  2. The Nature Index is one indicator of institutional research performance. The metrics of Count and Share used to order Nature Index listings are based on an institution’s or country’s publication output in 82 natural-science journals, selected on reputation by an independent panel of leading scientists in their fields.
  3. Nature Index recognizes that many other factors must be taken into account when considering research quality and institutional performance; Nature Index metrics alone should not be used to assess institutions or individuals.
  4. Nature Index data and methods are transparent and available under a creative commons licence at natureindex.com.

The Nature Index database undergoes regular updating, corrections, adjustment of institutional hierarchies, and removal of retracted papers and thus the live website can differ from the frozen annual tables.

*The change in adjusted Share accounts for the small annual variation in the total number of articles in Nature Index journals. Share values have been adjusted to 2020 levels to calculate the percentage change. For more information on the adjustment, please see the Adjusted metric explainer.