未登录,请登录后再发表信息
最新评论 (0)
播放视频

鲑鱼对生态系统的影响

There's Something Very Fishy About These Trees ... | Deep Look

这种花生长在繁茂的阿拉斯加草地上
This flower lives in a lush Alaskan meadow.
但是它依赖数百英里外的深海繁衍
But it’s survival depends on the deep ocean, hundreds of miles away.
是什么让这两者的结合成为可能呢?
What could possibly bind the two together?
答案是这些家伙——鲑鱼
These guys – chum salmon.
成年鱼穿梭在太平洋 拼命吃饱囤积脂肪
As adults, they patrol the Pacific, gorgingthemselves and growing fat.
但是几年后
But after a few years,
就收到了它们出生的溪流的召唤
The streams where they were born call to them.
积雪融化成水
The salmon are hypnotized by smell of the freshwater,
从山上飞流直下
flowing from melting snow on the
淡水的味道将这群鲑鱼吸引过来
mountains above.
成千上万条鲑鱼聚集在一起逆流而上
By the thousands, they mob together and chargeupstream.
老鹰们在流窜的鱼群中大快朵颐
Eagles feast on the stampede of flesh.
鲑鱼群绵延不绝
The salmon are relentless.
它们甚至不需要进食
They don’t even eat.
就只是游啊游
They just swim.
它们到达了生命的尽头
They’re reaching the end of their lives,
但临死前还有最后一件要做的事
But they have one last thing to do beforethey die
雌鱼用尾巴在沙砾中筑巢
Females dig little nests in the gravel withtheir tails.
接着交由雄鱼彻底授精
Then they lay their eggs, which the malesfertilize…. thoroughly.
然后雌鱼掩盖受精卵
Then she covers them up.
对于大多数鲑鱼来说
For most of these salmon,
回到海里毫无希望
there ’ s no hope of making it back to sea.
这里就是它们的终点
It’s the end for them.
但是等等 故事还没结束
But wait, this story isn’t done.
通过某种方式
One way or another,
鲑鱼的尸体成功登上河岸
the salmon carcasses make their way up onto the river banks,
进入到森林中
into the forest.
但是熊属于草率的捕食者
But bears are sloppy eaters,
它们只吃最爱的部分 其余则任其腐烂
they take their favorite bits and leave rest to decay.
这就成为这些苍蝇的温床
That’s a score for these blow flies.
它们品尝鱼肉确保符合它们的口味
They taste the flesh to make sure it ’ s to their liking –
但这并不是为了
but not because they ’ re going
要去吃它
to eat it.
它们的后代将以尸体为家
Their kids will call this carcass home.
蝇卵孵化成蛆虫开始吞食鲑鱼
The fly eggs hatch into maggots that set to work devouring the salmon.
腐肉成为它们的美食
Rotting flesh is their thing.
当它们吃饱后
When they ’ ve had their fill,
蛆虫蠕动着钻进尸体内部
the maggots squirm off and bury themselves underground
直到作为成年苍蝇飞出
until they’re ready to emerge as adult flies.
它们飞往森林各处生活
They scatter off to live their lives in theforest.
当它们死亡或是被吃掉时 体内的鲑鱼的营养物质
When they die or get eaten, the nutrientsfrom the salmon
将在整个生态系统中得以传播
get spread throughout the ecosystem.
比如其中蕴含的氮就是植物生长所必须的元素
Things like nitrogen, that plants need togrow.
因此河流就像是一条动脉
So the river is like an artery –
从深海中带来
bringing an influx of vital nutrients direct from the
大量重要的营养物质
deep ocean.
在这些沿海的森林里
In these coastal forests,
植物体内高达80%的氮
up to 80 % of the nitrogen in the plants can be traced back
都来自于鲑鱼
to the salmon
此外苍蝇还有另一项重要的任务——传授花粉
And the blow flies have one more important job – pollinating fields of flowers.
这一切都要感谢这群勇敢的鱼
It ’ s all thanks to these intrepid fish –
它们滋养了整个生态系统
who nourish an entire ecosystem.
年复一年
Year after year.
这群小家伙是鲑鱼幼鱼
These little guys are baby coho salmon,
它们已经准备好
ready to take their first big journey out into the
去往海洋的首次重要旅程
ocean.
请确保你参与我们的路程
Make sure you ’ re in on our journey,
点击订阅按钮
and hit that subscribe button.
我们每月两次更新时会提醒你
We’ll let you know about new episodes, twicea month.
观看《我机智我自豪》之
And check out this episode
为什么说海狸是建筑大师
of It ’ s OK to Be Smart about why beavers are master builders.
它的拍摄地和本期一样
It ’ s from the same trip to Juneau,
在阿拉斯加州的朱诺市
Alaska where we filmed this episode.
下次见
See you next time.

发表评论

译制信息
视频概述

冬去春来,积雪消融,淡水的味道吸引了来自数百英里外海洋里的鲑鱼,它们在生命的尽头产下后代,尸体又以另一种形式参与到整片森林的生态系统中

听录译者

收集自网络

翻译译者

玛卡瑞纳NaNa

审核员

审核员 LD

视频来源

https://www.youtube.com/watch?v=rZWiWh5acbE

相关推荐