您現(xiàn)在的位置: Language Tips> Audio & Video> Normal Speed News  
       
     





     
    One third of world's coral reefs could face extinction
    [ 2008-07-14 09:38 ]

    Download

    Experts say one-third of the oceans' coral reefs face extinction by the middle of the century if nothing is done to save them. The reefs are home to a vast array of sea creatures, which experts say would also be endangered by the loss of the reefs. VOA's Jessica Berman reports.

    A group of thirty nine leading coral experts from around the world sounded the alarm in the first-ever global assessment of coral reefs.

    Corals are tiny sea creatures that lay their skeletons down to form large reefs that have been built over millions of years.

    Kent Carpenter of Old Dominion University in Virginia led the study, published this week in the journal Science, on the threat to the world's coral reefs, which are produced in tropical and sub-tropical seas in coastal waters.

    Carpenter says steps must be taken now to reduce greenhouse gas emissions and stop over-fishing and pollution of the oceans.

    "If we do not do those things, then, at the current level of how things are going, we will probably lose our coral reefs by the middle of this century," Carpenter said. "So, 2050 is the date that many people are predicting that coral reefs will cease to exist."

    Carpenter says, as ocean temperatures rise, corals throw off algae attached to them that are essential for their survival.

    "Normally, when you see a coral, it's tan or green or some colorful color," he said. "But when they expel their algae inside of them, then they become white. And this is a phenomenon known as bleaching. Another consequence of higher temperatures is increased disease, and this can cause mass die off."

    Carpenter says the coral reefs at greatest risk of extinction are the most common - the branching or staghorn coral.

    According to the report, the Caribbean has the greatest number of threatened coral species.

    The report also lists corals within the Pacific's Indo-Malay-Philippine Archipelago as threatened because of large concentrations of people.

    Experts say more than 25 percent of marine species depend upon the reefs for their survival.

    Carpenter says humans also depend upon coral reefs.

    "They are important for food and important for other types of livelihoods," he said. "So, if we lose the ecosystems, we lose not only the biodiversity, but we also lose the capability of people to obtain income and food from coral reefs."

    However, Carpenter says he and other marine biologists believe the coral reefs can be rescued through targeted conservation efforts and a reduction in greenhouse gas emissions.

    Earlier this week, a U.S. government report said nearly half of coral reefs in U.S. government territory are in poor or fair condition.

    coral reef:珊瑚礁

    (Source: VOA 英語點(diǎn)津姍姍編輯)

     
    英語點(diǎn)津版權(quán)說明:凡注明來源為“英語點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國日?qǐng)?bào)網(wǎng)簽署英語點(diǎn)津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請(qǐng)與010-84883631聯(lián)系;凡本網(wǎng)注明“來源:XXX(非英語點(diǎn)津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請(qǐng)與稿件來源方聯(lián)系,如產(chǎn)生任何問題與本網(wǎng)無關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請(qǐng)?zhí)峁┌鏅?quán)證明,以便盡快刪除。
    相關(guān)文章 Related Story
     
     
     
    本頻道最新推薦
     
    Walking in the US first lady's shoes
    “準(zhǔn)確無誤”如何表達(dá)
    英國新晉超女蘇珊大媽改頭換面
    豬流感 swine flu
    你有l(wèi)ottery mentality嗎
    翻吧推薦
     
    論壇熱貼
     
    別亂扔垃圾。怎么譯這個(gè)亂字呀?
    橘子,橙子用英文怎么區(qū)分?
    看Gossip Girl學(xué)英語
    端午節(jié)怎么翻譯?
    母親,您在天堂還好嗎?

     

    熟妇人妻中文av无码| 人妻中文字幕无码专区| 中文字幕av在线| 精品国精品无码自拍自在线| 久久久久综合中文字幕| 久久精品无码一区二区日韩AV | 18禁裸乳无遮挡啪啪无码免费 | 最新中文字幕av无码专区| 国产中文字幕在线观看| 国产成人无码一区二区三区| 中文字幕乱偷无码AV先锋 | 久久AV无码精品人妻糸列| 久久精品aⅴ无码中文字字幕不卡| 国产亚洲?V无码?V男人的天堂 | 亚洲动漫精品无码av天堂| 亚洲日本中文字幕区| 欧美日韩中文国产一区发布 | 亚洲一区无码中文字幕| 久久久久无码专区亚洲av| 无码一区二区三区视频| 免费a级毛片无码a∨免费软件| 日韩精品无码中文字幕一区二区 | 亚洲日韩VA无码中文字幕| 中文字幕精品亚洲无线码一区| 亚洲人成无码久久电影网站| 精品人妻无码专区中文字幕| 国产精品亚洲а∨无码播放| AV无码免费永久在线观看| 日韩AV无码久久一区二区| 人妻少妇乱子伦无码视频专区| 性无码一区二区三区在线观看| 亚洲AV无码国产丝袜在线观看| 亚洲精品中文字幕无码蜜桃| 一区二区三区人妻无码| 亚洲精品无码成人片久久| 伊人久久综合精品无码AV专区 | 无码人妻少妇色欲AV一区二区 | 亚洲AV无码成人精品区蜜桃| 亚洲AV日韩AV永久无码久久| 无码专区狠狠躁躁天天躁| 日韩丰满少妇无码内射|