The author mentions the estimated numbers of birds and coral fish species on various Oceanic islands in order to demonstrate how much knowledge about Oceanic species has been accumulated.

作者提到了各种海洋岛屿上鸟类和珊瑚鱼物种的预估数量，以显示已经积累了多少关于海洋物种的知识。

youdao

The programme is a joint initiative of two UNESCO sectors (Education, through the Associated Schools Project network, and Natural Sciences, through the Small Islands and Indigenous Knowledge Section) in the framework of the Intersectoral Platform for Small Island Developing States, and in cooperation with the UNESCO Offices in Apia, Dar-es-Salaam, Kingston and other regions.

UNESCO: Small Island Developing States

The great voyaging canoes might not have survived, but the cargo of language, culture and knowledge that they brought to the islands certainly has.

BBC: A tale of the South Pacific

Moving towards an increasingly integrated approach to sustainable development in small islands, CSI focused on local community perceptions and knowledge relating to the conservation and wise use of freshwater and coastal resources.

UNESCO: New Zealand