它们阻止了鱼类迁徙，并改变了对本地物种至关重要的水生栖息地。
They prevent fish migrations and change aquatic habitats essential for native species.
这种独特的生物是墨西哥湾水生生物中遭到威胁的物种之一，墨西哥湾恶劣的水质和栖息地的丧失减弱了生态系统。
This unique creature is part of an imperiled community of aquatic organisms in the Gulf of Mexico, where poor water quality and habitat loss have weakened the ecosystem.
从那时起，约430座过时的水坝在美国河流上消失，此举打通了鱼群和其他水生物的返回栖息地的通道，并重新让河流川流不息起来。
Since then, some 430 outdated dams have been removed from U.S. rivers, opening up habitat for fish and other aquatic organisms and letting rivers flow like rivers again.
景观设计中应该尽可能的加强、扩大以及创建野生动植物栖息地，诸如池塘、湿地、本土的水生与陆地植物、灌木篱墙的保养修护。
Wherever possible, landscape design should enhance, expand or create wildlife habitat such as ponds, wetlands, native aquatic and terrestrial plants, and hedgerows.
所有这些淡水生态系统可以在一个分水岭中被发现—那是一套可以把比如大湖泊或者海洋这样单一的水域排干的栖息地。
All the freshwater ecosystems can be found within a watershed-a set of habitats that drain into a single body of water such as a big lake or the ocean.
长江流域历来是水生生物理想的栖息地、繁殖场及重要的洄游通道。
Yangtze River had always been the ideal habitat, breeding ground, and migration channel by aquatic organisms.
从那时起，约430座过时的水坝在美国河流上消失，此举打通了鱼群和其他水生物的返回栖息地的通道，并重新让河流川流不息起来。
Since then, some 430 outdated DAMS have been removed from U. S. rivers, opening up habitat for fish and other aquatic organisms and letting rivers flow like rivers again.
介形虫，小型水生甲壳纲，出现在几乎所有的海洋，半咸水和淡水栖息地。
Ostracods, small aquatic Crustacea, occur in almost every Marine, brackish and freshwater habitat.
团泊湖因其水产资源及水生物资源丰富，为各种鸟类的栖息繁衍提供了优越的自然条件，被辟为“团泊洼候鸟栖息地自然保护区”。
The rich resources of aquatic products and organism provide excellent natural conditions for birds to inhabit and multiply. It is also known as "Tuanbowa Migratory Birds Habitat Nature Reserve".
他们的栖息地分布广泛，从陆生的森林，山脉，沙漠到水生的海洋，湖泊，河流与小溪。
They live in a wide variety of habitats ranging from forests, mountains and deserts on land to oceans, lakes, rivers and streams in water.
他们的栖息地分布广泛，从陆生的森林，山脉，沙漠到水生的海洋，湖泊，河流与小溪。
They live in a wide variety of habitats ranging from forests, mountains and deserts on land to oceans, lakes, rivers and streams in water.
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