There is, however, increasing concern about the impact of fishing and other human activities on marine ecosystems, which are now far from pristine.

然而，人们越来越关注捕鱼和其他人类活动对海洋生态系统的影响，因为现在海洋生态系统远非原始状态。

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Given the toxic impact of modern coal fly ash on aquatic ecosystems, the scientists suggest that the massive coal conflagration may have created toxic Marine conditions the world over.

现代的煤灰给水生态系统造成了有毒影响，科学家们表示，大量的煤炭燃烧也许已经造成了全球范围的有毒的海洋环境。

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Its disappearance would therefore have a major impact on the entire Marine food chain.

因此，它的消失将对整个海洋食物链产生重大影响。

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The global decrease of coastal marine resources and decline in marine biodiversity will impact countries dependent on coastal fishing, fish-processing industries and tourism causing economic hardship as well as destabilising food security for the 1 billion people who depend on fisheries for most of their protein diet.

UNESCO: THEMES

Even a small increase in ocean acidity, the alarmists claim, can have devastating impact on marine life.

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Jantz has been studying the impact of marine debris in fish.

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