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2011PETS阅读:保护海洋食物链
Perhaps you've had salmon, tuna, or swordfish for dinner recently. Or maybe it's on the menu tonight. Every big fish that lands on your plate got that big by eating lots of little fish. If you don't have abundant small fish in the ocean, you won't have the big fish.

That's why scientists, fishery managers and advocacy groups are paying more attention to the small prey in the world’s oceans. Some environmental groups also want tighter regulation on ocean catches of these smaller fish, and that's making fishermen nervous.

Fisheries biologist Jen Zamon learned lots of things in graduate school, but how to get a newly-captured seabird to barf in a bucket was not one of them. She finds squirts of warm water down the gullet and squeezing the tummy does the trick.


VOA - T. Banse
NOAA biologists, including Tiffanie Cross, coax a common murre into regurgitating its dinner of forage fish.

Zamon and her team from the NOAA research station in Warrenton, Oregon, want to know what fish the diving birds at the mouth of the Columbia River are eating.

"Yeah, it's definitely anchovies," she says after examining the vomit.

The day before, Zamon says, the vomit samples mostly contained half-digested surf smelt. Other examples of prey fish include sardines, herring and mackerel.

"Things like sardines and anchovy, which are extremely abundant, are very important not just for fishery, but for feeding other creatures in the food web - mammals, birds, larger fish," she says. "It's very nice, we know these bird species are indicators of where these fish species of interest are."


This seabird dining survey is just one example of scientists paying greater attention to the fortunes of smaller fish. A significant transformation is even more noticeable among policy makers, managers and some environmental groups. Earlier this year, the Pew Environment Group started a campaign to protect small, schooling fish.

"We knew it was the next logical step," says Paul Shively, who manages the campaign out of Portland, Oregon. "This issue is picking up more and more steam all across the nation. There's more and more attention, more and more science pointing to the fact that we need to make sure there's enough food in the oceans."

Another environmental advocacy group, called Oceana, is running a similar healthy ocean campaign. Conservationists report progress in moving fishery managers to base decisions not just on the "big money" fish, but on the entire ocean food web. Insiders call this "ecosystem-based management."

But when talks turns to limits on fishing for small, schooling fish, then resistance crops up. On America's West Coast, ocean advocates want fishery managers to cap quotas for bait fish at current levels and put a moratorium on any new fisheries.

Commercial fisherman Ryan Kapp of Bellingham, Washington, argues that the West Coast sardine, anchovy and herring fisheries are already managed quite conservatively.

"Seeing that none of these stocks are overfished or even approaching overfished, I’d just as soon leave it alone," says Kapp. "We have enough regulations to keep track of as it is."

Environmentalists worry that rising global demand for seafood and fish meal will put pressure on small fish. At the Pew Environment Group, Paul Shively urges what he calls a precautionary approach.

"We don't need to wait until there is a crisis in our oceans to address an issue. For so many years, we've looked at our oceans and we wait until there is a collapse of a fishery before we take action. We're saying it doesn't hurt to have a new paradigm where perhaps we take some precautionary measures."

Shively has made that case to federal fishery advisors including Bob Emmett, a marine biologist with the federal oceans and atmosphere agency, NOAA. Emmett says it's www.pets12345.com down with a hard, regulatory hand.

"There are still a lot of data needs," Emmett says. "If you are actively managing these fishes, that means you have a lot of information. We don't believe at the time that we really have it."

The fortunes of small fish are also surfacing at the state level. The California legislature is considering a law to promote ecosystem-based management in nearshore state waters.


词汇讲解:

1. menu n. 菜单
例句:Please show me the menu.
请给我看看菜单。

2. abundant adj. 大量的, 充足的
例句:Rainfall is abundant in the region.
该地区降雨丰沛。

3. advocacy n. 支持, 拥护, 鼓吹
例句:He is insistent on the advocacy of new scientific methods.
他坚持提倡新的科学方法。

4. prey n. 被捕食的动物, 猎物
例句:The lion was hunting for its prey.
狮子在寻找猎物。

5. squeeze v. 挤, 榨, 捏
例句:The room was crowded but I managed to squeeze in.
房间人很多, 不过我还是设法挤了进去。

6. noticeable adj.显而易见的, 明显的, 显著的
例句:There's been a noticeable improvement in his handwriting.
他的书法有了明显的进步。

7. insider n. 内部的人;知情人
例句:A Wall Street dealer was jailed for insider trading.
一位华尔街交易商因內幕交易而遭监禁。

8. cap vt. 胜过, 超过
例句:Each clown capped the last joke of the other.
丑角的笑话一个比一个好。

9. moratorium n. 正式的延缓,暂停
例句:The government has called for a moratorium on weapons testing.
政府已要求暂停武器试验。

10. precautionary adj. 预先警戒的;小心的
例句:He thrusts aside all precautionary advice.
他把一切警告都置之一边。

11. premature adj. 过早的, 提前的, 未到期的
例句:A fire caused the premature closing of the exhibition.
火灾迫使展览会提前结束。

短语讲解:

1. That's why scientists, fishery managers and advocacy groups are paying more attention to the small prey in the world’s oceans.

pay attention to注意,关心
例句:No attention was paid to his advice.
他的建议没有引起注意。

2. This issue is picking up more and more steam all across the nation.

pick up拾起, 捡起; 抬起
例句:I picked up your book by mistake.
我拿错了你的书。

3. There's more and more attention, more and more science pointing to the fact that we need to make sure there's enough food in the oceans.

point to表明
例句:All this points to the same conclusion.
所有这些都说明了同样的结论。

4. But when talks turns to limits on fishing for small, schooling fish, then resistance crops up.

turn to (把注意力等)转向
例句:We are all turning our thoughts to the matter.
我们大家都开始转而考虑这个问题。
crop up突然发生; 意外地发现
例句:It had never occurred to her that a new possibility would crop up abruptly.
她万万没有想到会突然出现一种新的可能性。

5. "Seeing that none of these stocks are overfished or even approaching overfished, I’d just as soon leave it alone," says Kapp.

leave alone不理, 不管〔惹〕, 不烦扰, 不干涉
例句:She wants to think things out quietly, so we had better leave her alone.
她要安静地考虑一下, 最好别打扰她。

6. We have enough regulations to keep track of as it is.

keep track of与…失去〔保持〕联系; 了解〔忘记〕
例句:As a doctor, Brooks has to keep track of the latest developments in medicine.
作为一名医生, 布鲁克斯必须了解医学的最新发展动态。

7. Environmentalists worry that rising global demand for seafood and fish meal will put pressure on small fish.

put on增加; 增加(费用)
例句:The rise in taxation will put pounds on the cost of living.
提高税收将使生活费用大大增加。

8. For so many years, we've looked at our oceans and we wait until there is a collapse of a fishery before we take action.

take action采取行动, 行动起来
例句:The police had to take firm action to deal with the riots.
警方不得不采取果断行动来对付骚乱。

9. We're saying it doesn't hurt to have a new paradigm where perhaps we take some precautionary measures.

take measures采取措施
例句:We should take appropriate measures to improve our teaching.
我们应当采取适当的措施提高教学质量。

10. Emmett says it's www.pets12345.com down with a hard, regulatory hand.

come down下来, 下落; 倒塌, 被www.pets12345.com
例句:He came down with pneumonia last week.
上星期, 他得肺炎病倒了。