That's because freshwater ecosystems are so closely linked to human activity.

这是因为淡水生态系统和人类活动密切相关。

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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.

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。

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Areas like this, where freshwater meets the ocean, create dazzlingly diverse ecosystems called estuaries.

在这样的地区里，淡水湖与海洋相遇，创建了一个名为河口的多种多样、光辉灿烂的生态系统。

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Equally worrying scenarios are predicted for freshwater ecosystems and coral reefs if currents levels of pollution are not reduced.

FORBES: The Future of Life On Earth: A Two-Part Discussion

The total freshwater supply available for ecosystems and humans is less than 1% of all freshwater resources.

FORBES: Connect

Climate change is already adversely affecting many areas, including biodiversity and ecosystems, freshwater resources, human health, human settlements and migration patterns, the conservation of natural and cultural world heritage properties, and peace and prosperity.

UNESCO: Indigenous Peoples