Origins of Life and Evolution of Biospheres

The subject of the origin and early evolution of life is an inseparable part of the general discipline of Astrobiology. The journal Origins of Life and Evolution of Biospheres places special importance on the interconnection as well as the interdisciplinary nature of these fields, as is reflected in its subject coverage. While any scientific study which contributes to our understanding of the origins, evolution and distribution of life in the Universe is suitable for inclusion in the journal, some examples of important areas of interest are: prebiotic chemistry and the nature of Earth's early environment, self-replicating and self-organizing systems, the theory of the RNA world and of other possible precursor systems, and the problem of the origin of the genetic code. Early evolution of life - as revealed by such techniques as the elucidation of biochemical pathways, molecular phylogeny, the study of Precambrian sediments and fossils and of major innovations in microbial evolution - forms a second focus. As a larger and more general context for these areas, Astrobiology refers to the origin and evolution of life in a cosmic setting, and includes interstellar chemistry, planetary atmospheres and habitable zones, the organic chemistry of comets, meteorites, asteroids and other small bodies, biological adaptation to extreme environments, life detection and related areas. Experimental papers, theoretical articles and authorative literature reviews are all appropriate forms for submission to the journal. In the coming years, Astrobiology will play an even greater role in defining the journal's coverage and keeping Origins of Life and Evolution of Biospheres well-placed in this growing interdisciplinary field.

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Quartiles

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.

Category	Year	Quartile
Ecology, Evolution, Behavior and Systematics	1999	Q1
Ecology, Evolution, Behavior and Systematics	2000	Q2
Ecology, Evolution, Behavior and Systematics	2001	Q1
Ecology, Evolution, Behavior and Systematics	2002	Q1
Ecology, Evolution, Behavior and Systematics	2003	Q3
Ecology, Evolution, Behavior and Systematics	2004	Q1
Ecology, Evolution, Behavior and Systematics	2005	Q2
Ecology, Evolution, Behavior and Systematics	2006	Q2
Ecology, Evolution, Behavior and Systematics	2007	Q2
Ecology, Evolution, Behavior and Systematics	2008	Q3
Ecology, Evolution, Behavior and Systematics	2009	Q2
Ecology, Evolution, Behavior and Systematics	2010	Q2
Ecology, Evolution, Behavior and Systematics	2011	Q2
Ecology, Evolution, Behavior and Systematics	2012	Q2
Ecology, Evolution, Behavior and Systematics	2013	Q3
Ecology, Evolution, Behavior and Systematics	2014	Q3
Ecology, Evolution, Behavior and Systematics	2015	Q3
Ecology, Evolution, Behavior and Systematics	2016	Q3
Ecology, Evolution, Behavior and Systematics	2017	Q2
Ecology, Evolution, Behavior and Systematics	2018	Q2
Ecology, Evolution, Behavior and Systematics	2019	Q2
Ecology, Evolution, Behavior and Systematics	2020	Q2
Ecology, Evolution, Behavior and Systematics	2021	Q4
Ecology, Evolution, Behavior and Systematics	2022	Q3
Ecology, Evolution, Behavior and Systematics	2023	Q3
Medicine (miscellaneous)	1999	Q1
Medicine (miscellaneous)	2000	Q1
Medicine (miscellaneous)	2001	Q1
Medicine (miscellaneous)	2002	Q1
Medicine (miscellaneous)	2003	Q1
Medicine (miscellaneous)	2004	Q1
Medicine (miscellaneous)	2005	Q1
Medicine (miscellaneous)	2006	Q1
Medicine (miscellaneous)	2007	Q1
Medicine (miscellaneous)	2008	Q2
Medicine (miscellaneous)	2009	Q1
Medicine (miscellaneous)	2010	Q2
Medicine (miscellaneous)	2011	Q2
Medicine (miscellaneous)	2012	Q2
Medicine (miscellaneous)	2013	Q2
Medicine (miscellaneous)	2014	Q3
Medicine (miscellaneous)	2015	Q2
Medicine (miscellaneous)	2016	Q2
Medicine (miscellaneous)	2017	Q2
Medicine (miscellaneous)	2018	Q2
Medicine (miscellaneous)	2019	Q2
Medicine (miscellaneous)	2020	Q3
Medicine (miscellaneous)	2021	Q4
Medicine (miscellaneous)	2022	Q3
Medicine (miscellaneous)	2023	Q3
Space and Planetary Science	1999	Q2
Space and Planetary Science	2000	Q2
Space and Planetary Science	2001	Q2
Space and Planetary Science	2002	Q2
Space and Planetary Science	2003	Q2
Space and Planetary Science	2004	Q2
Space and Planetary Science	2005	Q2
Space and Planetary Science	2006	Q2
Space and Planetary Science	2007	Q2
Space and Planetary Science	2008	Q3
Space and Planetary Science	2009	Q2
Space and Planetary Science	2010	Q3
Space and Planetary Science	2011	Q2
Space and Planetary Science	2012	Q3
Space and Planetary Science	2013	Q3
Space and Planetary Science	2014	Q3
Space and Planetary Science	2015	Q3
Space and Planetary Science	2016	Q3
Space and Planetary Science	2017	Q3
Space and Planetary Science	2018	Q3
Space and Planetary Science	2019	Q3
Space and Planetary Science	2020	Q3
Space and Planetary Science	2021	Q4
Space and Planetary Science	2022	Q3
Space and Planetary Science	2023	Q3

SJR

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.

Year	SJR
1999	1.290
2000	0.783
2001	1.371
2002	1.062
2003	0.556
2004	1.241
2005	0.846
2006	0.710
2007	0.760
2008	0.547
2009	1.035
2010	0.581
2011	0.657
2012	0.579
2013	0.495
2014	0.388
2015	0.463
2016	0.492
2017	0.613
2018	0.502
2019	0.600
2020	0.495
2021	0.240
2022	0.362
2023	0.368

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Year	Documents
1999	51
2000	27
2001	32
2002	35
2003	32
2004	43
2005	37
2006	44
2007	63
2008	36
2009	21
2010	78
2011	51
2012	54
2013	33
2014	31
2015	46
2016	43
2017	38
2018	29
2019	15
2020	9
2021	16
2022	16
2023	10

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 document	Year	Value
Cites / Doc. (4 years)	1999	1.449
Cites / Doc. (4 years)	2000	1.184
Cites / Doc. (4 years)	2001	1.669
Cites / Doc. (4 years)	2002	1.781
Cites / Doc. (4 years)	2003	1.379
Cites / Doc. (4 years)	2004	2.317
Cites / Doc. (4 years)	2005	2.754
Cites / Doc. (4 years)	2006	2.163
Cites / Doc. (4 years)	2007	1.968
Cites / Doc. (4 years)	2008	1.647
Cites / Doc. (4 years)	2009	1.878
Cites / Doc. (4 years)	2010	1.756
Cites / Doc. (4 years)	2011	1.838
Cites / Doc. (4 years)	2012	1.968
Cites / Doc. (4 years)	2013	1.309
Cites / Doc. (4 years)	2014	1.009
Cites / Doc. (4 years)	2015	1.432
Cites / Doc. (4 years)	2016	1.354
Cites / Doc. (4 years)	2017	1.667
Cites / Doc. (4 years)	2018	1.601
Cites / Doc. (4 years)	2019	1.763
Cites / Doc. (4 years)	2020	1.672
Cites / Doc. (4 years)	2021	1.758
Cites / Doc. (4 years)	2022	1.725
Cites / Doc. (4 years)	2023	1.679
Cites / Doc. (3 years)	1999	1.449
Cites / Doc. (3 years)	2000	1.180
Cites / Doc. (3 years)	2001	1.789
Cites / Doc. (3 years)	2002	1.582
Cites / Doc. (3 years)	2003	1.436
Cites / Doc. (3 years)	2004	2.596
Cites / Doc. (3 years)	2005	2.355
Cites / Doc. (3 years)	2006	1.946
Cites / Doc. (3 years)	2007	1.815
Cites / Doc. (3 years)	2008	1.528
Cites / Doc. (3 years)	2009	1.846
Cites / Doc. (3 years)	2010	1.842
Cites / Doc. (3 years)	2011	1.896
Cites / Doc. (3 years)	2012	1.540
Cites / Doc. (3 years)	2013	1.268
Cites / Doc. (3 years)	2014	1.283
Cites / Doc. (3 years)	2015	1.492
Cites / Doc. (3 years)	2016	1.336
Cites / Doc. (3 years)	2017	1.533
Cites / Doc. (3 years)	2018	1.535
Cites / Doc. (3 years)	2019	1.855
Cites / Doc. (3 years)	2020	1.793
Cites / Doc. (3 years)	2021	1.585
Cites / Doc. (3 years)	2022	1.625
Cites / Doc. (3 years)	2023	1.902
Cites / Doc. (2 years)	1999	1.500
Cites / Doc. (2 years)	2000	1.073
Cites / Doc. (2 years)	2001	1.436
Cites / Doc. (2 years)	2002	1.949
Cites / Doc. (2 years)	2003	1.657
Cites / Doc. (2 years)	2004	2.328
Cites / Doc. (2 years)	2005	2.053
Cites / Doc. (2 years)	2006	1.700
Cites / Doc. (2 years)	2007	1.383
Cites / Doc. (2 years)	2008	1.402
Cites / Doc. (2 years)	2009	1.960
Cites / Doc. (2 years)	2010	2.263
Cites / Doc. (2 years)	2011	1.222
Cites / Doc. (2 years)	2012	1.178
Cites / Doc. (2 years)	2013	1.648
Cites / Doc. (2 years)	2014	1.126
Cites / Doc. (2 years)	2015	1.422
Cites / Doc. (2 years)	2016	1.104
Cites / Doc. (2 years)	2017	1.438
Cites / Doc. (2 years)	2018	1.741
Cites / Doc. (2 years)	2019	1.701
Cites / Doc. (2 years)	2020	1.886
Cites / Doc. (2 years)	2021	1.208
Cites / Doc. (2 years)	2022	1.680
Cites / Doc. (2 years)	2023	1.938

Total Cites

Self-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.

Cites	Year	Value
Self Cites	1999	27
Self Cites	2000	25
Self Cites	2001	35
Self Cites	2002	36
Self Cites	2003	11
Self Cites	2004	37
Self Cites	2005	20
Self Cites	2006	26
Self Cites	2007	33
Self Cites	2008	32
Self Cites	2009	21
Self Cites	2010	23
Self Cites	2011	14
Self Cites	2012	16
Self Cites	2013	19
Self Cites	2014	5
Self Cites	2015	18
Self Cites	2016	12
Self Cites	2017	14
Self Cites	2018	14
Self Cites	2019	4
Self Cites	2020	7
Self Cites	2021	6
Self Cites	2022	12
Self Cites	2023	4
Total Cites	1999	155
Total Cites	2000	164
Total Cites	2001	220
Total Cites	2002	174
Total Cites	2003	135
Total Cites	2004	257
Total Cites	2005	259
Total Cites	2006	218
Total Cites	2007	225
Total Cites	2008	220
Total Cites	2009	264
Total Cites	2010	221
Total Cites	2011	256
Total Cites	2012	231
Total Cites	2013	232
Total Cites	2014	177
Total Cites	2015	176
Total Cites	2016	147
Total Cites	2017	184
Total Cites	2018	195
Total Cites	2019	204
Total Cites	2020	147
Total Cites	2021	84
Total Cites	2022	65
Total Cites	2023	78

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.

Cites	Year	Value
External Cites per document	1999	1.196
External Cites per document	2000	1.000
External Cites per document	2001	1.504
External Cites per document	2002	1.255
External Cites per document	2003	1.319
External Cites per document	2004	2.222
External Cites per document	2005	2.173
External Cites per document	2006	1.714
External Cites per document	2007	1.548
External Cites per document	2008	1.306
External Cites per document	2009	1.699
External Cites per document	2010	1.650
External Cites per document	2011	1.793
External Cites per document	2012	1.433
External Cites per document	2013	1.164
External Cites per document	2014	1.246
External Cites per document	2015	1.339
External Cites per document	2016	1.227
External Cites per document	2017	1.417
External Cites per document	2018	1.425
External Cites per document	2019	1.818
External Cites per document	2020	1.707
External Cites per document	2021	1.472
External Cites per document	2022	1.325
External Cites per document	2023	1.805
Cites per document	1999	1.449
Cites per document	2000	1.180
Cites per document	2001	1.789
Cites per document	2002	1.582
Cites per document	2003	1.436
Cites per document	2004	2.596
Cites per document	2005	2.355
Cites per document	2006	1.946
Cites per document	2007	1.815
Cites per document	2008	1.528
Cites per document	2009	1.846
Cites per document	2010	1.842
Cites per document	2011	1.896
Cites per document	2012	1.540
Cites per document	2013	1.268
Cites per document	2014	1.283
Cites per document	2015	1.492
Cites per document	2016	1.336
Cites per document	2017	1.533
Cites per document	2018	1.535
Cites per document	2019	1.855
Cites per document	2020	1.793
Cites per document	2021	1.585
Cites per document	2022	1.625
Cites per document	2023	1.902

% 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.

Year	International Collaboration
1999	19.61
2000	18.52
2001	18.75
2002	25.71
2003	31.25
2004	30.23
2005	13.51
2006	15.91
2007	15.87
2008	33.33
2009	33.33
2010	14.10
2011	21.57
2012	27.78
2013	15.15
2014	3.23
2015	17.39
2016	55.81
2017	21.05
2018	17.24
2019	33.33
2020	11.11
2021	37.50
2022	37.50
2023	10.00

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.

Documents	Year	Value
Non-citable documents	1999	3
Non-citable documents	2000	3
Non-citable documents	2001	4
Non-citable documents	2002	5
Non-citable documents	2003	8
Non-citable documents	2004	8
Non-citable documents	2005	6
Non-citable documents	2006	2
Non-citable documents	2007	0
Non-citable documents	2008	1
Non-citable documents	2009	2
Non-citable documents	2010	3
Non-citable documents	2011	3
Non-citable documents	2012	6
Non-citable documents	2013	9
Non-citable documents	2014	8
Non-citable documents	2015	4
Non-citable documents	2016	0
Non-citable documents	2017	1
Non-citable documents	2018	5
Non-citable documents	2019	6
Non-citable documents	2020	5
Non-citable documents	2021	1
Non-citable documents	2022	0
Non-citable documents	2023	1
Citable documents	1999	104
Citable documents	2000	136
Citable documents	2001	119
Citable documents	2002	105
Citable documents	2003	86
Citable documents	2004	91
Citable documents	2005	104
Citable documents	2006	110
Citable documents	2007	124
Citable documents	2008	143
Citable documents	2009	141
Citable documents	2010	117
Citable documents	2011	132
Citable documents	2012	144
Citable documents	2013	174
Citable documents	2014	130
Citable documents	2015	114
Citable documents	2016	110
Citable documents	2017	119
Citable documents	2018	122
Citable documents	2019	104
Citable documents	2020	77
Citable documents	2021	52
Citable documents	2022	40
Citable documents	2023	40

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.

Documents	Year	Value
Uncited documents	1999	48
Uncited documents	2000	70
Uncited documents	2001	46
Uncited documents	2002	49
Uncited documents	2003	39
Uncited documents	2004	26
Uncited documents	2005	25
Uncited documents	2006	35
Uncited documents	2007	45
Uncited documents	2008	50
Uncited documents	2009	49
Uncited documents	2010	35
Uncited documents	2011	63
Uncited documents	2012	77
Uncited documents	2013	100
Uncited documents	2014	55
Uncited documents	2015	42
Uncited documents	2016	39
Uncited documents	2017	37
Uncited documents	2018	44
Uncited documents	2019	45
Uncited documents	2020	34
Uncited documents	2021	20
Uncited documents	2022	12
Uncited documents	2023	13
Cited documents	1999	59
Cited documents	2000	69
Cited documents	2001	77
Cited documents	2002	61
Cited documents	2003	55
Cited documents	2004	73
Cited documents	2005	85
Cited documents	2006	77
Cited documents	2007	79
Cited documents	2008	94
Cited documents	2009	94
Cited documents	2010	85
Cited documents	2011	72
Cited documents	2012	73
Cited documents	2013	83
Cited documents	2014	83
Cited documents	2015	76
Cited documents	2016	71
Cited documents	2017	83
Cited documents	2018	83
Cited documents	2019	65
Cited documents	2020	48
Cited documents	2021	33
Cited documents	2022	28
Cited documents	2023	28