海洋稀客

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By their very nature, rare marine species are challenging to study.

因为它们的天性，稀有海洋物种研究起来是非常困难的。

They often elude detection by established research methods because of their scarcity and patchy distribution.

利用现有的研究手段往往很难检测到它们，因为它们十分稀有，且十分分散。

Their small populations demand the use of sampling techniques that minimize the risks of injury or death and that conserve the habitats and ecological communities that support them.

它们稀少的数量，要求使用能够将伤害和死亡的几率降到最低的采样技术，并且能够保护好它们赖以生存的栖息地和生态环境。

At the same time, ever more once-common marine species are becoming rare as threats such as overfishing, invasive species, and environmental destruction reduce their abundance .

同时，随着过度捕捞，外来物质入侵以及环境破坏使得数量锐减，更多的曾经数量较多的海洋物种也加入了濒危的行列。

Analysis of environmental DNA (eDNA) shows promise as a rapid, safe, sensitive, and cost-effective means for detecting and studying rare marine species.

因此，在检测和研究稀有海洋物种时，对环境DNA的分析可能将成为一种快捷，安全，灵敏而成本较低的研究方法。

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