字幕表 動画を再生する 英語字幕をプリント The Galápagos are famous for their reptiles and birds but much of the islands' flora is equally interesting and it's just as vulnerable to the impact of humans. Over the last centuries, almost 500 species of plant have been imported into the Galápagos, some for agriculture, some for gardens and some by accident. Like the wild goats who compete with indigenous tortoises for food, so these newcomers compete with local plants for sunlight, soil and water. Santa Cruz, for example, is home to a unique species of plant called miconia, which is only found on one other island. Today, it is under threat from the red quinine tree. First brought onto the island in the late 1940s, the red quinine tree is very hardy and it reproduces so rapidly that there were worries that it might wipe out the whole of the miconia zone. Today, the National Park Service are actively engaged in a programme to eradicate red quinine... ...injecting any seed-bearing trees with cartridges filled with herbicide. It's expensive, time-consuming work and there are many trees to kill but scientists are optimistic that they may eventually eradicate the most damaging newcomers.