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密歇根新闻广播 密州计划处理五大湖的亚洲鲤鱼问题

时间:2020-08-27 05:22来源:互联网 提供网友:nan   字体: [ ]
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There's a coalition1 of federal and state agencies working to keep Asian carp out of the Great Lakes.

It's called the Asian Carp Regional Coordinating2 Committee. It just came out with its carp plan for this year.

Marc Gaden is with the Great Lakes Fishery Commission, and he's part of that group. He says they have a three-pronged approach to tackling the Asian carp problem.

"It's monitoring, so eyes and ears and boots on the ground to know where these fish are. It's management: ongoing3 activities to keep these fish from moving around, to limit their reproduction. And then, contingency4 planning; based on that monitoring, if the Asian carp are found somewhere where they shouldn't be, we have a contingency plan, or specific actions we can take to deal with the problem."

He says the agencies are going to double the fishing effort in the Dresden Island pool, in Illinois, which is the location of the leading edge of Asian carp.

"So we're going to have much more commercial fishing to remove (the carp), and already we've removed tons and tons. We're going to significantly increase our monitoring in 2016 throughout the Chicago Area Waterway System and in the rivers in Illinois."

But I really want to stress that the contingency plan, which is brand new, is a sea change in thinking because what it does is it outlines what exactly you can do if these fish are found where they shouldn't be. It commits the agencies who are part of the response to take that action," says Gaden.

He says the adult population of Asian carp is still about 50 miles from Lake Michigan, with a system of locks and electric barriers in between.

But a new federal study found that small fish can be trapped between barges6 and can get through locks and electric barriers. Gaden says it's possible the same thing could happen with little carp.

"We're very concerned that small Asian carp could be caught in the shadow of a barge5: they call that entrainment, and moved beyond the electrical barrier, from below the barrier to above the barrier," says Gaden. "It's very real. The studies have shown these carp can get in an eddy7 or protected zone, and moved past the barrier. There are studies going on now about how that can be stopped."

If Asian carp make it into the Great Lakes, many people worry they could cause billions of dollars in damage. The large fish are voracious8 feeders that can out-compete native species. Silver carp tend to jump when startled, which can injure people and damage boats.

Gaden says the total spent on Asian carp, by all agencies, is about $57 million per year. More than half of that is for the electrical barrier system.


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1 coalition pWlyi     
n.结合体,同盟,结合,联合
参考例句:
  • The several parties formed a coalition.这几个政党组成了政治联盟。
  • Coalition forces take great care to avoid civilian casualties.联盟军队竭尽全力避免造成平民伤亡。
2 coordinating fc35d08ba9bb2dcfdc96033a33b9ae1e     
v.使协调,使调和( coordinate的现在分词 );协调;协同;成为同等
参考例句:
  • He abolished the Operations Coordinating Board and the Planning Board. 他废除了行动协调委员会和计划委员会。 来自辞典例句
  • He's coordinating the wedding, and then we're not going to invite him? 他是来协调婚礼的,难道我们不去请他? 来自电影对白
3 ongoing 6RvzT     
adj.进行中的,前进的
参考例句:
  • The problem is ongoing.这个问题尚未解决。
  • The issues raised in the report relate directly to Age Concern's ongoing work in this area.报告中提出的问题与“关心老人”组织在这方面正在做的工作有直接的关系。
4 contingency vaGyi     
n.意外事件,可能性
参考例句:
  • We should be prepared for any contingency.我们应该对任何应急情况有所准备。
  • A fire in our warehouse was a contingency that we had not expected.库房的一场大火是我们始料未及的。
5 barge munzH     
n.平底载货船,驳船
参考例句:
  • The barge was loaded up with coal.那艘驳船装上了煤。
  • Carrying goods by train costs nearly three times more than carrying them by barge.通过铁路运货的成本比驳船运货成本高出近3倍。
6 barges f4f7840069bccdd51b419326033cf7ad     
驳船( barge的名词复数 )
参考例句:
  • The tug is towing three barges. 那只拖船正拖着三只驳船。
  • There were plenty of barges dropping down with the tide. 有不少驳船顺流而下。
7 eddy 6kxzZ     
n.漩涡,涡流
参考例句:
  • The motor car disappeared in eddy of dust.汽车在一片扬尘的涡流中不见了。
  • In Taylor's picture,the eddy is the basic element of turbulence.在泰勒的描述里,旋涡是湍流的基本要素。
8 voracious vLLzY     
adj.狼吞虎咽的,贪婪的
参考例句:
  • She's a voracious reader of all kinds of love stories.什么样的爱情故事她都百看不厌。
  • Joseph Smith was a voracious book collector.约瑟夫·史密斯是个如饥似渴的藏书家。
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