It's probably from strong winds sweeping over algal blooms, but we don't know.

可能是强风卷过藻华造成的，但我们不确定。

When algae grows densely and out of control, it's called an algal bloom.

当藻类生长密集且无法控制的时候就会产生水华现象。

Right now, nitrification, overuse of phosphates in our waterways are causing tremendous algal blooms.

如今，水体中过量的氮和磷 导致藻类疯长。

It was the first time Oregon had detected algal toxins in treated water.

这是俄勒冈州首次处理过的水中检测到藻类毒素。

So far, nobody has died from algal toxins in the U.S., but the possibility looms.

到目前为止，美国还没有人死于海藻毒素，但这种可能增大。

Too many nutrients in the water leads to poor water quality by causing hazardous algal blooms.

水里如果营养物太多，水质护很差，因为会产生具有危害的藻类繁。

This led to algal blooms that resulted in bacterial proliferation, which caused a drop of oxygen.

这导致藻华，继而致使细菌繁，最终使氧气量下降。

Algal blooms occur in nature, but this year, the high levels of toxins led to record poisoning.

藻类自然界中会大量繁，但今年，高水平的毒素导致了创纪录的中毒事件。

This algal bloom will absorb sunlight shining on the water so the sunlight can't reach the bottom.

这种藻华会吸收照水面上的阳光，这样阳光就无法到达底部。

An algal bloom has reduced the output of salmon farms in Chile, the world's second-biggest producer, unnerving investors.

世界第二大三文鱼出产国智利由于海藻过于茂盛，导致产量下降，很多投资者因此紧张不安。

Algal toxins in drinking water is not a rare event, Mishra says.

米什拉说，饮用水中的藻类毒素并非罕见。

Rose said this is a bad sign because it points to increased algal blooms — the sudden growth of algae.

罗斯说，这是一个不好的迹象，因为这意味着藻类的激增--藻类突然增多。

So, eutrophication happens when nutrients are added to water which causes an algal bloom, cutting off sunlight and feeding bacteria.

因此，当向水中添加营养物质导致藻类大量繁、隔绝阳光并滋生细菌时，就会发生富营养化。

The fungal partner in many lichen jettison a gene that's critical for energy production-making them completely dependent on their algal associates.

许多地衣中的真菌伙伴会抛弃产生能量的关键基因，这使它们完全依赖于藻类伙伴。

This is what happens when the nitrogen moves into water streams, pollutes lakes, triggers algal blooms and creates another Green Revolution.

氮排入水源就会发生这种情况，污染湖泊，让水藻泛滥，引发另一场“绿色革命”。

And some of the bacterial DNA found its way into the algae, where it took up residence in the algal genome.

某些细菌的DNA进入了藻类，并藻类基因组中“寄居”。

So they're starting to pale and losing their coral pick their algal pigments and eventually we expect them to bleach fully.

它们开始变白，逐渐失去珊瑚所有的藻类色素，我们预计它们最终会完全漂白。

These are the largest harmful algal blooms on our planet.

这些是我们星球上最大的有害藻华。

This is a toxic blue-green algal bloom and it is not good for you.

这是一种有毒的蓝绿色藻华，对您不利。

This actually happens all the time, in events known as harmful algal blooms.

这实际上一直发生， 被称为有害藻华的事件中。