Biogeosciences
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Articles | Volume 23, issue 13
Articles | Volume 23, issue 13
https://doi.org/10.5194/bg-23-4873-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-4873-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 13
Research article
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15 Jul 2026
Research article | Highlight paper |  | 15 Jul 2026

Heterogeneity of tropical diversity and ecosystems: reefal meiofaunas in equatorial western and eastern African islands

Skye Yunshu Tian, Martin Langer, Chih-Lin Wei, and Moriaki Yasuhara

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Editorial statement
This study uses advanced statistical modeling to identify regional isolation and the Mid-Atlantic Barrier as dominant drivers over local environmental selection in reefal meiofauna. The high endemism of the eastern Atlantic fauna provides an important missing piece for understanding tropical marine community assembly and dispersal filters across oceanic basins.
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Short summary
Oceanic islands hold great ecological value as they support endemic biodiversity and act as steppingstones of dispersal. We investigated benthic meiofaunas from two exotic tropical archipelagoes (São Tomé-Príncipe in western Africa and Zanzibar in eastern Africa) and revealed marked heterogeneity in their diversity and biogeographic patterns. High endemicity of the São Tomé-Príncipe fauna underlines the effectiveness of dispersal barriers and urges conservation of those vulnerable ecosystems.
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