Freshwater ecosystems

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。

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。

Freshwater ecosystems were more likely to be nonstationary , instead of stationary .

进而说明淡水生态系统倾向于呈现出非平稳特性，而不是平稳特性。

It protects freshwater ecosystems by reducing the amount of water extracted from rivers and lakes .

此保障了新鲜水的生态系统，藉由减少水从河川及湖泊的的压榨量而来。

In freshwater ecosystems , some kinds of widely distributed UV sensitive P compounds ( UVSP ) can release orthophophate when irradiated by UV or sunlight .

湖泊、沼泽与河流等淡水生态系统中存在一些对紫外光敏感的磷化合物，它们在紫外光（或太阳光）的作用下释放正磷酸根。

According to the study , aquatic vegetation is a key factor for the construction of stable , well-functioning freshwater ecosystems . So , reconstruct-tion and restoration of aquatic vegetation is a very important part for the prevention and control of eutrophication .

沉水植物是构建结构稳定、运行良好的淡水水体生态系统的关键因素，因此恢复和重建污染水体沉水植被是预防与治理水体富营养化工作的重要环节。

In 2014 , researchers at the University of New Brunswick released the results of a study that had been going on for several decades . They were looking at wastewater treatment and its impact on freshwater ecosystems , and they found that even trace amounts of estrogen in the environment can wipe out entire species .

在2014年，新不伦瑞克大学的研究人员公布了一项已经进行了数十年的研究成果：他们观察了废水的处理过程和其对淡水生态系统的影响，并且发现，即使环境中微量的雌性激素都会摧毁整个海洋物种。

Other freshwater and terrestrial ecosystems have been degraded by pollution .

其他淡水和陆地生态系统也因污染而退化。

Benthos The organisms that live on the bottom sediments of freshwater and marine ecosystems . They include plants and algae ( phytobenthos ) that grow below low tide mark .

船底附着生物的一种底栖生物（海底生物）：在淡水或海洋生态系统底部生活的生物体。包括一些水底的植物和藻类。

Many field experiments have tested the theory and confirmed that , wherever in freshwater or terrestrial ecosystems , resource addition lead to increase in aboveground primary productivity ( ANPP ) and decrease in species diversity .

对于该理论的野外试验已经证实，无论是在陆地生态系统还是水生生态系统，资源添加所引起的竞争会引起生产力的增加和物种多样性的下降。