tropical species的意思|示意

Because the latitudinal position of an island also affected its biotic mix, islands in cooler latitudes did not support some tropical species typical of the Pacific islands.

因为一个岛屿的纬度位置也影响了它的生物组合，所以在较冷的纬度上的岛屿不支持一些太平洋岛屿典型的热带物种。

One is that because tropical species often have smaller populations than temperate ones, they are more susceptible to genetic drift.

一种假说认为生长在热带地区的物种比温带物种的种群小，所以受遗传漂变的影响更大。

Compared to those in cooler climates, tropical species can cope with only a narrow temperature range.

与生活在凉爽气候里的物种相比，热带物种所能承受的温度范围其实很小。