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Extremophiles

Springer · Japan · Est. 1997

ISSN1431-0651eISSN1433-4909

SJR Q2✓ WOS SCIE✓ Scopus / SJR

/ 100

Medium Risk

PubScope credibility score from verifiable indexing & ethics signals

Score Breakdown

✓ WoS SCIE/SSCI+25

✓ Scopus Q2+18

Total43

Journal Impact Factor

This journal is indexed in Web of Science (JCR) and has an official Journal Impact Factor. View the current value on the journal’s page ↗

SJR Scorei

0.655

H-Indexi

115

CiteScore

View ↗

Scopus metric · on the journal’s page

SNIPi

0.631

Total Worksi

2,111

Total Citationsi

75,634

2yr Mean Citednessi

2.36

Open Impact Factor alternative

Aims & Scope

Extremophiles features original research articles, reviews, and method papers on the biology, molecular biology, structure, function, and applications of microbial life at the edges of survivability. Conditions covered include high or low temperature, pressure, acidity, alkalinity, salinity, or desiccation; or in the presence of organic solvents, heavy metals, normally toxic substances, or radiation. The coverage incorporates aspects of multiple disciplines, including molecular biology, biodiversity, genetics, genomics, metagenomics, proteomics, bioinformatics, survival strategies, macromolecular structure, biotechnology, fermentation technology, ultrastructure, biotransformation, metabolism, enzymology, biomembranes, bioenergetics, biophysics, physiology, cell biology, symbiosis, ecology, bioremediation, methodologies, evolution, phylogeny, taxonomy, astrobiology, and others.

⚡ Speed vs Prestige

How does this journal balance review speed with impact level?

SJR Rank

Top 50% in field

General Information

Country / RegionJapan

Primary LanguageEnglish

1st Year Published1997

Annual Volume~ 46 articles / year

StatusActive (last: 2026)

Total Publications2,111

Publisher OrgSpringer Science+Business Media

Visit Journal Website

Submission Info

Peer Review—

Review Time—

Acceptance Rate—

OA License—

OA Rate—

Ethics & Quality

COPE Member✗ No

OASPA Member✗ No

Not on Predatory Lists✓ Yes

Think.Check.Submit Compliance

thinkchecksubmit.org

6/12 · 50%

✅

Do you know the journal / publisher?

Springer

✅

Does the journal have a website?

✓ Linked

✅

Is the ISSN verified?

1431-0651 / 1433-4909

✅

Indexed in a trusted database?

WoS, Scopus

❌

Peer review process documented?

N/A

❌

Follows ethical publishing standards (COPE)?

N/A

❌

APC fees clearly disclosed?

N/A

✅

Not on predatory/blacklists?

✓ Clean

❌

Long-term digital preservation?

N/A

❌

Plagiarism detection in place?

N/A

❌

Listed in DOAJ (verified OA)?

N/A

✅

Primary language documented?

English

Based on the Think.Check.Submit framework by DOAJ, COPE & OASPA. All data from verified open sources.

Publication & Citation Trend

Articles published

Citations received

1.7k

2019

2020

659

2021

477

2022

215

2023

198

2024

2025

2026

Source: OpenAlex · Each year’s green bar = citations earned by that year’s papers, counted to date — so recent years look lower simply because their papers haven’t had time to be cited yet.

SJR Quartile by Discipline

Scimago ranks this journal separately in each subject category — its quartile can differ by discipline.

Medicine (miscellaneous)Q2

MicrobiologyQ3

Molecular MedicineQ3

Subject Classification

Web of Science Categories

Biochemistry & Molecular BiologyMicrobiology

Scopus Categories

Medicine (miscellaneous)MicrobiologyMolecular Medicine

Research Topics (OpenAlex)

Microbial Community Ecology and PhysiologyGenomics and Phylogenetic StudiesEnzyme Production and CharacterizationEnzyme Structure and FunctionMethane Hydrates and Related PhenomenaBacterial Genetics and BiotechnologyPolar Research and EcologyEnzyme Catalysis and ImmobilizationBacteriophages and microbial interactionsMicrobial Metabolic Engineering and Bioproduction

Frequently asked questions about Extremophiles

Is Extremophiles a predatory journal?

No major predatory indicators were found for Extremophiles. It is indexed in Web of Science, Scopus and has a PubScope Trust Score of 43/100. Always confirm fit and policies before submitting.

What is the impact factor of Extremophiles?

Extremophiles is indexed in the Web of Science Core Collection, so Clarivate publishes an official Journal Impact Factor for it (in the Journal Citation Reports). PubScope links to Clarivate's official source rather than reprinting the number, which can be out of date. Its open 2-year mean citedness is 2.36.

Is Extremophiles indexed in Scopus and Web of Science?

Extremophiles is indexed in Web of Science, Scopus.