| 1 (27) | Russian Academy of Sciences * | RUS |  |
| 2 (191) | Polish Academy of Sciences * | POL | |
| 3 (401) | Academy of Sciences of the Czech Republic * | CZE | |
| 4 (516) | Hungarian Academy of Sciences * | HUN | |
| 5 (728) | Romanian Academy * | ROU | |
| 6 (998) | National Academy of Sciences of Ukraine * | UKR | |
| 7 (1386) | Lithuanian Academy of Sciences * | LTU | |
| 8 (1428) | Global Change Research Institute of the ASCR | CZE | |
| 9 (1431) | Lithuanian Energy Institute | LTU | |
| 10 (1468) | Scientific Research Center Slovenian Academy of Science and Arts | SVN | |
| 11 (1501) | Research Centre for Astronomy and Earth Sciences Hungarian Academy of Sciences | HUN | |
| 12 (1531) | Slovenian Academy of Sciences and Arts * | SVN | |
| 13 (1748) | Slovak Academy of Sciences * | SVK | |
| 14 (1780) | Bulgarian Academy of Sciences * | BGR | |
| 15 (1818) | Institute of Nature Conservation Polish Academy of Sciences | POL | |
| 16 (1897) | Institute of Geography Russian Academy of Sciences | RUS | |
| 17 (1958) | Serbian Academy of Sciences and Arts * | SRB | |
| 18 (2040) | Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences | RUS | |
| 19 (2087) | Sukachev Institute of Forest Russian Academy of Sciences | RUS | |
| 20 (2090) | Ruder Boskovic Institute * | HRV | |
| 21 (2102) | National Institute for Economic Research Costin C Kiritescu | ROU | |
| 22 (2193) | National Academy of Sciences of Armenia * | ARM | |
| 23 (2244) | A.N. Severtsov Institute of Ecology and Evolution Russian Academy of Sciences | RUS | |
| 24 (2299) | P P Shirshov Institute of Oceanology Russian Academy of Sciences | RUS | |
| 25 (2332) | Limnological Institute Russian Academy of Sciences | RUS | |
| 26 (2377) | Karelian Research Center Russian Academy of Sciences | RUS | |
| 27 (2386) | Water Problems Institute Russian Academy of Sciences | RUS | |
| 28 (2473) | Lithuanian Research Centre for Agriculture and Forestry | LTU | |
| 29 (2511) | Azerbaijan National Academy of Sciences * | AZE | |
| 30 (2514) | Kola Science Centre Russian Academy of Sciences | RUS | |
| 31 (2548) | Papanin Institute for Biology of Inland Waters Russian Academy of Sciences | RUS | |
| 32 (2629) | Dagestan Scientific Center Russian Academy of Sciences | RUS | |
| 33 (2635) | Trofimuk United Institute of Geology, Geophysics and Mineralogy Russian Academy of Sciences | RUS | |
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