
The Incredible Comeback: How Life Defied All Odds on a Volcanic Island
2025-09-20
Author: Ying
In a stunning display of nature's resilience, Nishinoshima, a volcanic island located about 1,000 kilometers (620 miles) south of Tokyo, faced a cataclysmic eruption in November 2013 that transformed its landscape forever.
As lava erupted from a vent on the seafloor, it created a new landmass that overwhelmed the original island. The relentless flow of molten rock and thick layers of ash obliterated virtually all life, leaving the island a wasteland.
Yet, against all odds, life began to return. In 2019, a team of scientists from Tokyo Metropolitan University discovered resilient common purslane (Portulaca oleracea) thriving in this harsh environment, a feat achieved right before another eruption threatened to erase it once again.
In a groundbreaking study, researchers examined the DNA of these plants to unravel the mystery of their return. Surprisingly, they found that while these plants were related to their neighbors on Chichijima—a nearby volcanic island—they exhibited a striking loss of genetic diversity, a phenomenon known as the "founder effect." This suggests that only a few seeds had reached Nishinoshima, establishing a new lineage amidst the barren landscape.
The question on everyone's lips is: how did these tiny seeds manage to traverse the treacherous journey to Nishinoshima? With a size comparable to poppy seeds, these little discs are incredibly well-designed for travel. Their buoyancy allows them to float on ocean currents, and their lightweight structure enables them to be carried by the wind or consumed by birds, potentially facilitating their transportation.
Despite this remarkable recovery, the future of Nishinoshima's fragile ecosystem remains in the balance. With ongoing eruptions that continually reshape the land, who knows what challenges lie ahead for the daring plants that have already demonstrated their tenacity in the face of destruction?