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Volcanic Eruptions Lead to Extinction of Island Plant

9/18/2025

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Summary

Story summary

Researchers examined the extinction of purslane on Nishinoshima Island, Japan, caused by volcanic eruptions.
The island, part of the Ogasawara chain, regularly faces eruptions that destroy plant life.
Prior to a 2019 eruption, scientists gathered purslane samples for genetic analysis.
The study found the extinct purslane closely related to a species on Chichijima Island.
Genetic analysis indicated a "founder effect," showing reduced variation and the impact of volcanic activity on species survival.

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Story summary

Researchers examined the extinction of purslane on Nishinoshima Island, Japan, caused by volcanic eruptions.
The island, part of the Ogasawara chain, regularly faces eruptions that destroy plant life.
Prior to a 2019 eruption, scientists gathered purslane samples for genetic analysis.
The study found the extinct purslane closely related to a species on Chichijima Island.
Genetic analysis indicated a "founder effect," showing reduced variation and the impact of volcanic activity on species survival.