对于赫德岛和麦克唐纳群岛与众不同的保护价值在于，该群岛保留了世界罕见的早期岛屿生态系统，它从未受到过来自本生态系统外的生物影响，也没有受到过人类的影响。

The distinctive conservation value of Heard and McDonald – one of the world's rare pristine island ecosystems – lies in the complete absence of alien plants and animals, as well as human impact.

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