科学｜日本の海に広がる外来種問題 / Science | The Problem of Invasive Species in Japan’s Oceans

Summary

According to the latest research, over 100 species of “invasive species” have been confirmed in Japan’s seas since the late Edo period.

These invasive species include a wide range of organisms such as shellfish, crustaceans, and sea squirts, many of which have established themselves and are breeding in the country. Experts warn that these invasive species could displace native species and have a serious impact on marine ecosystems. In particular, there are concerns that the distribution of invasive species is expanding due to the effects of global warming.

Dialogue

This dialogue is fictional and based on the article.

Chaco: Hey Log, is it true that there are over 100 invasive species in the ocean!?
Log: Yeah, it seems that’s what the latest survey found. It includes things like shellfish, crustaceans, and sea squirts.
Chaco: Why have they increased so much?
Log: I think it’s because climate change is expanding the range of invasive species. That could negatively impact native species.
Navi: Just to add, the establishment of invasive species can change the marine ecosystem and pose a risk of native species being driven out.
Chaco: It’s scary that the ecosystem could change like that! Is there anything we can do about it?

Admin’s Note

The issue of invasive species in the ocean is an important topic that affects our lives as well. Especially with the ongoing warming, the expansion of invasive species poses a threat to native ecosystems. Chako’s concerns are also very significant, raising the question of how we will address this problem. I believe it is essential for more people to take an interest in this issue and consider possible solutions moving forward.