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This summary is machine-generated.

This bibliometric analysis of open-access mega-journals (OAMJs) reveals varied growth, author demographics, and subject scopes. While OAMJs share traits, no single "typical" mega-journal exists, highlighting diverse roles in scholarly communication.

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Area of Science:

  • Bibliometrics
  • Scholarly Communication
  • Open Access Publishing

Background:

  • Open-access mega-journals (OAMJs) are a recent publishing model.
  • Key characteristics include large size, broad scope, Gold Open Access, and focus on scientific soundness in peer review.

Purpose of the Study:

  • To conduct the first comprehensive bibliometric analysis of eleven OAMJs.
  • To examine journal outputs, author characteristics, subject areas, and citation profiles.

Main Methods:

  • Bibliometric analysis of eleven open-access mega-journals.
  • Analysis of journal outputs (2014-2015), author nationalities and affiliations, subject area distribution, and citation metrics.

Main Results:

  • Total output grew by 14.9% (2014-2015), driven by specific journals.
  • Significant variations observed in author geographical distribution and subject scope.
  • Citation distributions showed variation, with some OAMJs comparable to traditional journals.

Conclusions:

  • The term OAMJ is useful for grouping journals with shared traits.
  • There is considerable diversity among OAMJs; no "typical" mega-journal exists.
  • Further research is needed to understand the evolving role of OAMJs in scholarly communication.