 |
Male Rose-breasted Grosbeak. The grosbeak is a common bird
of forests and second growth. It's found throughout
Michigan, USA, during the summer.
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National Rankings in Environment/Ecology; 1999-December 31,
2009
Country Feature
|
This month from ScienceWatch.com, we have listed our
ranking in Environment/Ecology by total citations. The data
were extracted from the
Essential Science IndicatorsSM database
from Thomson
Reuters. This database, currently covering the period
January 1999 through December 31, 2009, surveys only journal
articles (original research reports and review articles)
indexed by Thomson Reuters. Read more below.
© Photo by: David Foster,
PhD, MPH
Chief Scientist. Center for Healthcare Improvement,
Healthcare & Science, Thomson Reuters.
|
|
Rank
|
Country
|
Papers
|
Citations
|
Citations per paper
|
|
1
|
USA
|
85,594
|
1,191,696
|
13.92
|
|
2
|
ENGLAND
|
17,766
|
277,739
|
15.63
|
|
3
|
CANADA
|
18,777
|
235,738
|
12.55
|
|
4
|
GERMANY
|
15,519
|
201,298
|
12.97
|
|
5
|
AUSTRALIA
|
12,641
|
162,213
|
12.83
|
|
6
|
FRANCE
|
12,027
|
148,936
|
12.38
|
|
7
|
SWEDEN
|
7,601
|
122,456
|
16.11
|
|
8
|
NETHERLANDS
|
7,376
|
110,234
|
14.94
|
|
9
|
SPAIN
|
10,386
|
109,455
|
10.54
|
|
10
|
PEOPLES R CHINA
|
14,615
|
91,033
|
6.23
|
|
11
|
SWITZERLAND
|
5,158
|
85,738
|
16.62
|
|
12
|
JAPAN
|
9,813
|
84,716
|
8.63
|
|
13
|
ITALY
|
7,906
|
76,924
|
9.73
|
|
14
|
SCOTLAND
|
4,354
|
67,557
|
15.52
|
|
15
|
DENMARK
|
4,194
|
64,583
|
15.4
|
|
16
|
FINLAND
|
4,490
|
61,706
|
13.74
|
|
17
|
BELGIUM
|
4,058
|
52,287
|
12.88
|
|
18
|
NEW ZEALAND
|
3,917
|
51,310
|
13.1
|
|
19
|
NORWAY
|
3,767
|
50,944
|
13.52
|
|
20
|
BRAZIL
|
5,639
|
46,419
|
8.23
|
|
SOURCE:
Essential Science
Indicators
SM database from
Thomson
Reuters.
|
Articles are assigned to a category based on the journals in which they
were published and Thomson Reuters’s journal-to-category field
definition scheme. Both articles tabulated and citation counts to those
articles are for the period indicated. 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% for a field over a given period,
based on total citations. In Environment/Ecology, 101 nations are
listed, meaning 202 were surveyed. The average citation rate for field
of Environment/Ecology is 10.70.
Country Profiles : 2010 : National Rankings in Environment/Ecology; 1999-December 31, 2009
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