Scimago Journal & Country Rank


Country Germany  - SIR icon SIR Ranking of Germany
H Index
Subject Area and CategoryAgricultural and Biological Sciences
Plant Science

Biochemistry, Genetics and Molecular Biology
Cell Biology

Medicine (miscellaneous)
PublisherSpringer Verlag
Publication typeJournals
ISSN16156102, 0033183X
Coverage1926-1943, 1949-ongoing
Scope Protoplasma, An International Journal of Cell Biology, is specializing in the area between structural and molecular analysis of biological systems from gene expression to the subcellular and supracellular levels. The journal is pleased to consider original manuscripts dealing with structural and macromolecular cell biology of protists, fungi, plants, and animals, as well as prokaryotes. Authors should point out the novelity of their research and its particular significance for the field. The work should challenge future studies and be of interest to cell biology in all its scientific and applied aspects.


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The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Cell Biology1999Q2
Cell Biology2000Q3
Cell Biology2001Q3
Cell Biology2002Q3
Cell Biology2003Q2
Cell Biology2004Q2
Cell Biology2005Q3
Cell Biology2006Q3
Cell Biology2007Q3
Cell Biology2008Q3
Cell Biology2009Q3
Cell Biology2010Q3
Cell Biology2011Q3
Cell Biology2012Q3
Cell Biology2013Q2
Cell Biology2014Q3
Cell Biology2015Q3
Cell Biology2016Q3
Cell Biology2017Q3
Cell Biology2018Q3
Medicine (miscellaneous)1999Q1
Medicine (miscellaneous)2000Q1
Medicine (miscellaneous)2001Q1
Medicine (miscellaneous)2002Q1
Medicine (miscellaneous)2003Q1
Medicine (miscellaneous)2004Q1
Medicine (miscellaneous)2005Q1
Medicine (miscellaneous)2006Q1
Medicine (miscellaneous)2007Q1
Medicine (miscellaneous)2008Q1
Medicine (miscellaneous)2009Q1
Medicine (miscellaneous)2010Q2
Medicine (miscellaneous)2011Q2
Medicine (miscellaneous)2012Q1
Medicine (miscellaneous)2013Q1
Medicine (miscellaneous)2014Q1
Medicine (miscellaneous)2015Q1
Medicine (miscellaneous)2016Q2
Medicine (miscellaneous)2017Q2
Medicine (miscellaneous)2018Q1
Plant Science1999Q1
Plant Science2000Q1
Plant Science2001Q2
Plant Science2002Q1
Plant Science2003Q1
Plant Science2004Q1
Plant Science2005Q1
Plant Science2006Q2
Plant Science2007Q2
Plant Science2008Q1
Plant Science2009Q2
Plant Science2010Q2
Plant Science2011Q2
Plant Science2012Q1
Plant Science2013Q1
Plant Science2014Q1
Plant Science2015Q1
Plant Science2016Q1
Plant Science2017Q1
Plant Science2018Q1

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)19991.605
Cites / Doc. (4 years)20001.705
Cites / Doc. (4 years)20011.388
Cites / Doc. (4 years)20021.333
Cites / Doc. (4 years)20031.654
Cites / Doc. (4 years)20041.646
Cites / Doc. (4 years)20051.976
Cites / Doc. (4 years)20061.757
Cites / Doc. (4 years)20071.886
Cites / Doc. (4 years)20081.780
Cites / Doc. (4 years)20091.673
Cites / Doc. (4 years)20101.747
Cites / Doc. (4 years)20111.810
Cites / Doc. (4 years)20122.815
Cites / Doc. (4 years)20133.500
Cites / Doc. (4 years)20143.265
Cites / Doc. (4 years)20152.689
Cites / Doc. (4 years)20162.766
Cites / Doc. (4 years)20172.739
Cites / Doc. (4 years)20182.883
Cites / Doc. (3 years)19991.605
Cites / Doc. (3 years)20001.603
Cites / Doc. (3 years)20011.236
Cites / Doc. (3 years)20021.363
Cites / Doc. (3 years)20031.895
Cites / Doc. (3 years)20041.929
Cites / Doc. (3 years)20051.942
Cites / Doc. (3 years)20061.618
Cites / Doc. (3 years)20071.850
Cites / Doc. (3 years)20081.747
Cites / Doc. (3 years)20091.528
Cites / Doc. (3 years)20101.843
Cites / Doc. (3 years)20111.839
Cites / Doc. (3 years)20123.051
Cites / Doc. (3 years)20133.650
Cites / Doc. (3 years)20143.252
Cites / Doc. (3 years)20152.615
Cites / Doc. (3 years)20162.631
Cites / Doc. (3 years)20172.766
Cites / Doc. (3 years)20182.896
Cites / Doc. (2 years)19991.547
Cites / Doc. (2 years)20001.367
Cites / Doc. (2 years)20011.123
Cites / Doc. (2 years)20021.532
Cites / Doc. (2 years)20032.164
Cites / Doc. (2 years)20041.733
Cites / Doc. (2 years)20051.712
Cites / Doc. (2 years)20061.569
Cites / Doc. (2 years)20071.695
Cites / Doc. (2 years)20081.412
Cites / Doc. (2 years)20091.362
Cites / Doc. (2 years)20101.512
Cites / Doc. (2 years)20111.888
Cites / Doc. (2 years)20123.155
Cites / Doc. (2 years)20133.619
Cites / Doc. (2 years)20143.086
Cites / Doc. (2 years)20152.427
Cites / Doc. (2 years)20162.756
Cites / Doc. (2 years)20172.714
Cites / Doc. (2 years)20182.797
Total Cites 

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Self Cites199934
Self Cites200077
Self Cites200152
Self Cites200227
Self Cites200343
Self Cites200426
Self Cites200520
Self Cites200613
Self Cites200734
Self Cites200814
Self Cites200917
Self Cites201025
Self Cites201130
Self Cites201262
Self Cites201350
Self Cites201454
Self Cites201559
Self Cites201648
Self Cites201781
Self Cites201895
Total Cites1999560
Total Cites2000569
Total Cites2001440
Total Cites2002424
Total Cites2003453
Total Cites2004380
Total Cites2005299
Total Cites2006288
Total Cites2007309
Total Cites2008304
Total Cites2009249
Total Cites2010258
Total Cites2011353
Total Cites2012659
Total Cites20131084
Total Cites20141034
Total Cites20151038
Total Cites2016997
Total Cites20171040
Total Cites20181196
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

External Cites per document19991.507
External Cites per document20001.386
External Cites per document20011.090
External Cites per document20021.277
External Cites per document20031.715
External Cites per document20041.797
External Cites per document20051.812
External Cites per document20061.545
External Cites per document20071.647
External Cites per document20081.667
External Cites per document20091.423
External Cites per document20101.664
External Cites per document20111.682
External Cites per document20122.764
External Cites per document20133.481
External Cites per document20143.082
External Cites per document20152.466
External Cites per document20162.504
External Cites per document20172.551
External Cites per document20182.666
Cites per document19991.605
Cites per document20001.603
Cites per document20011.236
Cites per document20021.363
Cites per document20031.895
Cites per document20041.929
Cites per document20051.942
Cites per document20061.618
Cites per document20071.850
Cites per document20081.747
Cites per document20091.528
Cites per document20101.843
Cites per document20111.839
Cites per document20123.051
Cites per document20133.650
Cites per document20143.252
Cites per document20152.615
Cites per document20162.631
Cites per document20172.766
Cites per document20182.896
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Non-citable documents19994
Non-citable documents20005
Non-citable documents20016
Non-citable documents20025
Non-citable documents20034
Non-citable documents20041
Non-citable documents20051
Non-citable documents20062
Non-citable documents20073
Non-citable documents20086
Non-citable documents200913
Non-citable documents201017
Non-citable documents201124
Non-citable documents201221
Non-citable documents201324
Non-citable documents201421
Non-citable documents201526
Non-citable documents201625
Non-citable documents201727
Non-citable documents201825
Citable documents1999349
Citable documents2000355
Citable documents2001356
Citable documents2002311
Citable documents2003239
Citable documents2004197
Citable documents2005154
Citable documents2006178
Citable documents2007167
Citable documents2008174
Citable documents2009163
Citable documents2010140
Citable documents2011192
Citable documents2012216
Citable documents2013297
Citable documents2014318
Citable documents2015397
Citable documents2016379
Citable documents2017376
Citable documents2018413
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Uncited documents1999139
Uncited documents2000148
Uncited documents2001145
Uncited documents2002126
Uncited documents200374
Uncited documents200461
Uncited documents200538
Uncited documents200658
Uncited documents200744
Uncited documents200865
Uncited documents200974
Uncited documents201054
Uncited documents201180
Uncited documents201265
Uncited documents201375
Uncited documents201479
Uncited documents2015119
Uncited documents2016103
Uncited documents201795
Uncited documents201898
Cited documents1999214
Cited documents2000212
Cited documents2001217
Cited documents2002190
Cited documents2003169
Cited documents2004137
Cited documents2005117
Cited documents2006122
Cited documents2007126
Cited documents2008115
Cited documents2009102
Cited documents2010103
Cited documents2011136
Cited documents2012172
Cited documents2013246
Cited documents2014260
Cited documents2015304
Cited documents2016301
Cited documents2017308
Cited documents2018340
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