北大西洋鳕鱼种群数量正在恢复
文章来源:未知 文章作者:enread 发布时间:2015-10-28 06:05 字体: [ ]  进入论坛
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Once an icon1 of overfishing, mismanagement, and stock decline, the northern Atlantic cod2 is showing signs of recovery according to new research published today in the Canadian Journal of Fisheries and Aquatic3 Sciences. This research, led by Dr. George Rose, tracks what is arguably the most important comeback of any fish stock worldwide. Studying the great northern Atlantic cod stock complex off Newfoundland and Labrador, once considered among the largest cod stocks in the world before its disastrous4 decline in the 1990s, Dr. Rose documents the stock's rebound5 over the past decade from tens of thousands to several hundred thousand tonnes and growing. 
 
According to the study, this comeback from commercial extinction6 has followed three distinct steps: 
 
1. After a decade and a half moratorium7 on fishing, improved environmental factors resulted in stock rebuilding in the southern Bonavista Corridor spawning-migration route accompanied by increases in size structure and fish condition. 
 
2. Two more northerly routes became populated with a wide size structure of fish.
 
3. Generation of strong recruitment from all three regions. The stock is positioned for this third and final step. 
 
Dr. Rose credits many equally important yet diversified8 factors in the continued rebuilding of this stock, "The important take-away from this study is that with favourable9 environmental conditions, in this case the increase in capelin as a key food for this stock, and a severe reduction of fishing, even the most decimated fish stocks have the potential to recover." Stressing the importance of responsible management, Dr. Rose continues, "Without a doubt, maintaining low removals of this stock over the past decades has been essential to recovery. While the timing10 of a full recovery remains11 uncertain, continued protection from excessive fishing remains essential to achieving that outcome".


点击收听单词发音收听单词发音  

1 icon JbxxB     
n.偶像,崇拜的对象,画像
参考例句:
  • They found an icon in the monastery.他们在修道院中发现了一个圣像。
  • Click on this icon to align or justify text.点击这个图标使文本排齐。
2 cod nwizOF     
n.鳕鱼;v.愚弄;哄骗
参考例句:
  • They salt down cod for winter use.他们腌鳕鱼留着冬天吃。
  • Cod are found in the North Atlantic and the North Sea.北大西洋和北海有鳕鱼。
3 aquatic mvXzk     
adj.水生的,水栖的
参考例句:
  • Aquatic sports include swimming and rowing.水上运动包括游泳和划船。
  • We visited an aquatic city in Italy.我们在意大利访问过一个水上城市。
4 disastrous 2ujx0     
adj.灾难性的,造成灾害的;极坏的,很糟的
参考例句:
  • The heavy rainstorm caused a disastrous flood.暴雨成灾。
  • Her investment had disastrous consequences.She lost everything she owned.她的投资结果很惨,血本无归。
5 rebound YAtz1     
v.弹回;n.弹回,跳回
参考例句:
  • The vibrations accompanying the rebound are the earth quake.伴随这种回弹的振动就是地震。
  • Our evil example will rebound upon ourselves.我们的坏榜样会回到我们自己头上的。
6 extinction sPwzP     
n.熄灭,消亡,消灭,灭绝,绝种
参考例句:
  • The plant is now in danger of extinction.这种植物现在有绝种的危险。
  • The island's way of life is doomed to extinction.这个岛上的生活方式注定要消失。
7 moratorium K6gz5     
n.(行动、活动的)暂停(期),延期偿付
参考例句:
  • The government has called for a moratorium on weapons testing.政府已要求暂停武器试验。
  • We recommended a moratorium on two particular kinds of experiments.我们建议暂禁两种特殊的实验。
8 diversified eumz2W     
adj.多样化的,多种经营的v.使多样化,多样化( diversify的过去式和过去分词 );进入新的商业领域
参考例句:
  • The college biology department has diversified by adding new courses in biotechnology. 该学院生物系通过增加生物技术方面的新课程而变得多样化。 来自《简明英汉词典》
  • Take grain as the key link, develop a diversified economy and ensure an all-round development. 以粮为纲,多种经营,全面发展。 来自《现代汉英综合大词典》
9 favourable favourable     
adj.赞成的,称赞的,有利的,良好的,顺利的
参考例句:
  • The company will lend you money on very favourable terms.这家公司将以非常优惠的条件借钱给你。
  • We found that most people are favourable to the idea.我们发现大多数人同意这个意见。
10 timing rgUzGC     
n.时间安排,时间选择
参考例句:
  • The timing of the meeting is not convenient.会议的时间安排不合适。
  • The timing of our statement is very opportune.我们发表声明选择的时机很恰当。
11 remains 1kMzTy     
n.剩余物,残留物;遗体,遗迹
参考例句:
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
TAG标签: fish stock cod
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