Top 10 countries in Environment/Ecology research based on total citations

Data from Thomson Scientific’s Essential Science Indicators, 1 January 1997–31 October 2007

February 21, 2008

 Country Papers CitationsImpact
1Switzerland4,376 57,750 13.20
2Scotland 4,021 51,651 12.85
3Sweden7,035 88,057 12.52
4England16,6 207,729 12.49
5Denmark3,903 48,753 12.49
6Netherlands6,756 82,938 12.28
7United States80,018 916,623 11.46
8Wales1,0 14,0 11.04
9Norway3,396 37,246 10.97
10Finland4,134 45,015 10.89
The data above were extracted from Thomson Scientific’s Essential Science Indicators database. This database, currently covering the period January 1997 to October 2007, surveys only journal articles (original research reports and review articles) indexed by Thomson Scientific. Articles are assigned to a category based on the journals in which they were published and Thomson Scientific’s journal-to-category field-definition scheme. Both articles tabulated and citation counts to those articles are for the period indicated. Here our ranking is by citations per paper to reveal weighted impact. For articles with multiple authors from different nations, each nation receives full, not fractional, citation credit. Essential Science Indicators lists nations ranked in the top 50 per cent for a field over a given period, based on total citations. What seems interesting in this summary is the prominent performance of Scotland, England, and Wales, as well as Switzerland, the Netherlands and several Nordic nations despite producing far fewer articles than the US. Clearly, this area is a strong suit for these European nations. For more information on Thomson Scientific’s Essential Science Indicators, see http://scientific.thomson.com/products/esi.

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