数值效应是明显的：退化地区的鲑鱼数量比原始地区少；然而，栖息地的丧失也有可能减少遗传多样性。
The numerical effect is obvious: there are fewer salmon in degraded regions than in pristine ones; however, habitat loss also has the potential to reduce genetic diversity.
当这种做法伴随着大片丛林栖息地的消失，可能会导致一个关于生命多样性的绝佳例子不复存在。
When combined with the loss of large swaths of jungle habitat, this practice may result the loss of a superb example of life's variety.
许多生态学家说，这些入侵物种仅次于栖息地的丧失，是对全球生物多样性的最大威胁。
Next to habitat loss, these invasive species represent the greatest threat to biodiversity worldwide, many ecologists say.
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