That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels.

这确有其事，因为理论告诉我们如果一个渔场总储量如果连起初最大可承受捕鱼量50％都不到，就应该降低捕鱼数量了。

To Buck it was boundless delight, this hunting, fishing, and indefinite wandering through strange places.

巴克非常喜欢这排, 打猎、捕鱼、在陌生地方无限期地游荡。

The Australian authorities said objects so far recovered from the water were discarded fishing equipment.

澳大利亚当局称到目前为止在水域发现物体都是废弃捕鱼设备。

We hope it will help to bring about more sustainable fishing practise.

我们希望这能有助于产生更多适当捕鱼行为。

One reason for this is that fishing technology has improved.

一个原因是天捕鱼技术已经大大改善。

It does so with no free movement of people, no financial contribution, no requirement to follow most of the level playing field rules and no need to allow EU boats any access to our waters for fishing.

它这做不会有人才自由流动，没有财政捐助，没有遵守多数公平竞争规则，也没有必要允许欧盟船只进入我们水域捕鱼。

To this day, the lake is an important source of fish for locals.

直到天，该湖仍是当地人捕鱼重要来源。

Some individuals would therefore not have been caught, since no baited hooks would have been available to trap them, leading to an underestimate of fish stocks in the past.

因此有一些鱼种没被抓到，往后没有鱼饵鱼钩根本捕不到鱼，导致过去捕鱼业受到轻视。

Hundreds of thousands of trawlers scrape the ocean bottom and they remove everything in their path leaving devastation behind and its annihilation fishing pure and simple, and it has to stop.

成千上万拖网渔船在海底扫荡，把沿途一切都清除掉，这是毁灭性捕鱼，所以必须停止。

The commercial fishing industry is expanding and many people rely on it for their livelihoods, but environmentalists say there are more commercial fishermen and women than the world needs.

商业捕鱼业正在扩大，许多人依靠捕鱼维持生计，但环保主义者表示，商业捕鱼人数量超过了世界需求。

The further the fishermen are away from land, the more dangerous the task.

但是捕鱼地方，离开海岸越远，危险系数就越高。

This past year, just a few weeks ago, California announced it had closed the entire commercial fishing for the whole state, the whole coast, because, essentially, there weren't any fish to fish.

过去一年，就在几周前，加利福尼亚州宣布关闭整个州，整条海岸线商业捕鱼作业，因为根本就无鱼可捕。

Uganda has tried to control the amount of fish taken from the lake.

乌干达试图控制从维多利亚湖里捕鱼数量。

When night falls on Tarawa, the fishermen sometimes recall a centuries-old fishing method.

当夜幕降临塔拉瓦岛时，渔民们有时会想起一种古老捕鱼方法。

This can lead to overfishing, unsafe and destructive fishing, and other problems.

这会导致过度捕捞，不全以及破坏性捕鱼现象，也会带来其他问题。

It's where they hunted, fished, and harvested.

那里是他们狩猎、捕鱼和收获地方。

He says they're happening more often and hurting his artisanal fishing business.

他说，这种情况越来越频繁，损害了他手工捕鱼业务。

Fishing in Senegal is part of the culture, it's been that way for generations.

在塞内加尔捕鱼是文化一部分，世世代代都是这么过来。

Mastering tricky fishing techniques is a key rite of passage for many water babies.

掌握复杂捕鱼技巧是许多水中幼崽重要成长仪式。

Damin usually sets off in the late afternoon and gets the cormorants ready for work.

大民通常在下午晚些时候动身，并准备好捕鱼用鸬鹚。