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1·Next to habitat loss, these invasive species represent the greatest threat to biodiversity worldwide, many ecologists say.

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。

2·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.

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。

3·Poaching is the greatest threat, followed by habitat loss.

偷猎是最大的威胁，其次是栖息地丧失。

4·Bushmeat hunters and habitat loss are the main threats.

丛林肉猎人和丧失栖息地是主要威胁。

5·Habitat loss or a change in land use are frequently to blame.

栖息地的丧失和土地使用的改变经常是造成这一结果的原因。

6·The creatures are declining in number, primarily because of habitat loss.

这种动物的数量正在由于栖息地的消失而日益减少。

7·In India, massive habitat loss continues to devastate Bengal tiger populations.

在印度，大量的栖地流失造成孟加拉虎的数量持续减少。

8·The most serious threat, however, is the loss of warm water due to habitat loss.

而最严重的威胁是温水的减少导致的栖息地流失。

9·Habitat loss and climate change will be the biggest reasons for their extinction.

栖息地的消失和气候的变化将是它们灭绝的最大原因。

10·In general, reddish egret Numbers have declined due to human encroachment and habitat loss.

总之，人类的入侵和栖息地的丧失使棕颈鹭的数量在不断下降。