Nishinoshima, which has expanded its area.

As a result of a land survey conducted by the Ministry of the Environment, etc. for the first time in three years in Nishinoshima, the Ogasawara Islands, where the area expanded due to eruptive activity, the first breeding of the "Bloodtail" was confirmed after the eruption.

In Nishinoshima, about 130 km west of Chichijima in the Ogasawara Islands, active eruption activity began six years ago, and lava flowed out. According to the Japan Coast Guard, the area of ​​the island was as of May. , About 10 times the original.

Due to the decline in eruptive activity, the Ministry of the Environment and animals and plants and geological experts conducted a land survey for the first time in 3 years from 3rd to 5th of this month.

As a result, chicks and eggs were found in the burrows of the “Origus terrestris” that make nests in the soil, and breeding was confirmed for the first time after the eruption.

In addition, crabs and shellfish that had not been confirmed before the eruption lived.

The Ministry of the Environment will continue to conduct periodic surveys and observe changes in the ecosystem of Nishinoshima.

Kazuhito Kawakami, Senior Researcher of the Forest Research Institute, who participated in the survey, said, “Ocean breeding has started at a faster speed than I thought. I hope that the biology of the island can be elucidated by continuing the survey. I was talking. "