气候变化迫使灰熊以浆果为主食
文章来源:未知 文章作者:enread 发布时间:2017-09-14 00:52 字体: [ ]  进入论坛
(单词翻译:双击或拖选)
Grizzly1 bears have stopped eating salmon2 in favour of elderberries after being forced to make a choice due to climate change. Warming temperatures meant that the berries are ripening3 earlier than usual, at exactly the same time as the freshwater streams on Alaska’s Kodiak Island are overflowing4 with sockeye salmon. 
 
由于气候变化的影响,灰熊被迫做出艰难抉择,放弃鲑鱼改吃接骨木果。温暖的气候使得浆果成熟期提前,与此同时,阿拉斯加科迪亚克岛的淡水河流里也挤满了红鲑。
 
The island's brown bears typically feed first on salmon in early summer, followed by elderberries later in the season, in late August and September. 
 
"What you have is a scrambling5 of the schedule," said William Deacy, a biologist at Oregon State University that studied the phenomenon. 
 
"It's essentially6 like if breakfast and lunch were served at same time and then there is nothing to eat until dinner. 
 
"You have to choose between breakfast and lunch because you can only eat so much at a time." 
 
The study found that during the unusually warm summer of 2014, the bears, which would traditionally kill up to 75 percent of the salmon, were nowhere to be seen near the streams. 
 
Instead, they were in the hills busy munching7 on berries, which contain less protein and therefore take less energy to break down, causing them to gain weight more quickly. 
 
Biologists warned that changes caused by a warming planet were behind the bears' unusual behavior and could affect the entire ecosystem8.


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1 grizzly c6xyZ     
adj.略为灰色的,呈灰色的;n.灰色大熊
参考例句:
  1. This grizzly liked people.这只灰熊却喜欢人。
  2. Grizzly bears are not generally social creatures.一般说来,灰熊不是社交型动物。
2 salmon pClzB     
n.鲑,大马哈鱼,橙红色的
参考例句:
  1. We saw a salmon jumping in the waterfall there.我们看见一条大马哈鱼在那边瀑布中跳跃。
  2. Do you have any fresh salmon in at the moment?现在有新鲜大马哈鱼卖吗?
3 ripening 5dd8bc8ecf0afaf8c375591e7d121c56     
v.成熟,使熟( ripen的现在分词 );熟化;熟成
参考例句:
  1. The corn is blossoming [ripening]. 玉米正在开花[成熟]。 来自《现代汉英综合大词典》
  2. When the summer crop is ripening, the autumn crop has to be sowed. 夏季作物成熟时,就得播种秋季作物。 来自《简明英汉词典》
4 overflowing df84dc195bce4a8f55eb873daf61b924     
n. 溢出物,溢流 adj. 充沛的,充满的 动词overflow的现在分词形式
参考例句:
  1. The stands were overflowing with farm and sideline products. 集市上农副产品非常丰富。
  2. The milk is overflowing. 牛奶溢出来了。
5 scrambling cfea7454c3a8813b07de2178a1025138     
v.快速爬行( scramble的现在分词 );攀登;争夺;(军事飞机)紧急起飞
参考例句:
  1. Scrambling up her hair, she darted out of the house. 她匆忙扎起头发,冲出房去。 来自《现代英汉综合大词典》
  2. She is scrambling eggs. 她正在炒蛋。 来自《简明英汉词典》
6 essentially nntxw     
adv.本质上,实质上,基本上
参考例句:
  1. Really great men are essentially modest.真正的伟人大都很谦虚。
  2. She is an essentially selfish person.她本质上是个自私自利的人。
7 munching 3bbbb661207569e6c6cb6a1390d74d06     
v.用力咀嚼(某物),大嚼( munch的现在分词 )
参考例句:
  1. He was munching an apple. 他在津津有味地嚼着苹果。 来自《简明英汉词典》
  2. Munching the apple as he was, he had an eye for all her movements. 他虽然啃着苹果,但却很留神地监视着她的每一个动作。 来自辞典例句
8 ecosystem Wq4xz     
n.生态系统
参考例句:
  1. This destroyed the ecosystem of the island.这样破坏了岛上的生态系统。
  2. We all have an interest in maintaining the integrity of the ecosystem.维持生态系统的完整是我们共同的利益。
TAG标签: climate bears salmon
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