从阿拉斯加东南海岸岛屿的洞穴中提取的化石的放射性碳年代测定法表明，在最后一个冰河时代，该地区至少有一部分保持无冰状态。
Radiocarbon dating of fossils taken from caves on islands along southeastern Alaska's coast suggest that at least a portion of the area was remaining ice-free during the last ice age.
与曾经是大陆性陆地的一部分的海洋岛屿不同，由火山作用等地质过程形成的岛屿只包含可以被运输到那里的动植物。
Unlike Oceanic islands that were once part of continental landmasses, islands formed by such geological processes as volcanism contain only plants and animals that could be transported there.
象其他的热点区域一样，包括撒丁岛和冰岛，冲绳是一个相对封闭的岛屿社区，其导致了很高程度的近亲繁殖和遗传性变形聚类。
Like other hotspots, including Sardinia and Iceland, Okinawa is a relatively isolated island community, which leads to higher levels of inbreeding and a clustering of genetic variants.
应用推荐