渡わた瀬せ線せん

noun

Watase line

A biogeographic boundary between the Palearctic and Oriental realms, named after the Japanese zoologist Watase Shozaburo. Used in biology and ecology.

• 渡わた瀬せ線せんは、屋や久く島しまと奄あま美み大おお島しまの間あいだに引ひかれた生せい物ぶつ地ち理り学がく上じょうの境きょう界かい線せんです。

  The Watase line is a biogeographic boundary drawn between Yakushima and Amami Oshima.