POSIIndexedC-Q1Zone 2Partially verifiedCurrent

PeerJ

PeerJ, Inc. · United States

POSI-J-000082eISSN 2167-8359

Journal website Publications Record JSON

Evaluation status

POSI-EVAL-1.0

1 · Core Collection

Indexed, not certified

Listed in the journal directory. Certification is by application.

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2 · PQF

Not assessed

Eligibility framework; not a citation metric.

What PQF measures

3 · Citation ranking

CITATION-RANK-1.0

547 / 2942C-Q1Zone 2

In Earth and Related Environmental Sciences · percentile 81.4

PNCI 0.74 · 7732 eligible items · coverage 100.0%

Snapshot: September 2026

Ranking method

PQF is an eligibility and quality-framework assessment. It is not a citation ranking metric and does not determine Citation Quartiles or POSI Zones. PCS is a supplementary citation indicator and does not determine the official POSI Citation Rank, Citation Percentile, Citation Quartile, or POSI Zone.

Citations and output

Citation score (PCS): 7.10; Supplementary · 2022–2025 · 7,732 items · PCS-1.0; Adequate sample; How it is calculated
Articles: 58,628; OpenAlex / Crossref
Subject: Earth and Related Environmental Sciences; P1.05 · confidence high

Ranking history

2026currentC-Q1Zone 2
Earth and Related Environmental Sciences · rank 547 of 2,942

Editions are kept as published; each ranks the journal within its category that year.

Record details

Identity

POSI ID · posi-data registry/ · identifier: POSI-J-000082
eISSN · ISSN Portal / Crossref · identifier: 2167-8359
OpenAlex source · OpenAlex · identifier: S1983995261
Title · ISSN Portal / Crossref · registry: PeerJ
Publisher · Crossref / OpenAlex · registry: PeerJ, Inc.

Not recorded: pISSN, ISSN country

Declared by the publisher

Stated by the journal about itself. POSI records these as declared and does not present them as measured.

Declared country · Publisher · declared: United States
Language · Publisher / DOAJ · declared: English
Website · Publisher · declared: www.peerj.com/

Not recorded: Frequency, License, Peer review, Article processing charge

Registry and computed values

Open access · DOAJ / OpenAlex · registry: Yes

Not recorded: DOAJ status

Verification: Partially verified

ISSN resolved to an OpenAlex source record; journal-level evidence not reviewed by POSI.

Freshness: Current

Updated 2026-08-10. Record updated within 6 months of the data cutoff.

Indexed, benchmark set

Indexed. Also in the Global Benchmark reference set that POSI uses to validate its methodology.

How states are assigned

Cite this record

Panorama Open Scholarly Index. (2026). PeerJ [journal record, POSI-J-000082]. https://posi.panorama-sg.com/journal/bench-peerj-0349/