白化现象对珊瑚有长期不良影响
文章来源:未知 文章作者:enread 发布时间:2014-11-26 06:16 字体: [ ]  进入论坛
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A new study by a Florida State University biologist shows that bleaching2 events brought on by rising sea temperatures are having a detrimental3 long-term impact on coral. Professor Don Levitan, chair of the Department of Biological Science, writes in the latest issue of Marine4 Ecology Progress Series that bleaching -- a process where high water temperatures or UV light stresses the coral to the point where it loses its symbiotic5 algal partner that provides the coral with color -- is also affecting the long-term fertility of the coral.
 
"Even corals that didn't bleach1 aren't reproducing at the levels they should," Levitan said.
 
Most corals reproduce by releasing sperm6 and eggs into the ocean during brief annual spawning8 events. The chance of sperm finding and fertilizing9 an egg depends on corals spawning in close proximity10 and in synchrony with each other.
 
In a study of the corals that build the major framework of Caribbean coral reefs, Levitan's team found that the species living in shallower water experienced near total reproductive failure, while the species living in deeper water was about half as likely to spawn7.
 
"The remarkable11 finding from this study was that the reduction in spawning persisted for three additional years, long after the corals had regained12 their symbiotic partners and regained their normal appearance," Levitan said.


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1 bleach Rtpz6     
vt.使漂白;vi.变白;n.漂白剂
参考例句:
  • These products don't bleach the hair.这些产品不会使头发变白。
  • Did you bleach this tablecloth?你把这块桌布漂白了吗?
2 bleaching c8f59fe090b4d03ec300145821501bd3     
漂白法,漂白
参考例句:
  • Moderately weathered rock showed more intense bleaching and fissuring in the feldspars. 中等风化岩石则是指长石有更为强烈的变白现象和裂纹现象。
  • Bleaching effects are very strong and show on air photos. 退色效应非常强烈,并且反映在航空象片上。
3 detrimental 1l2zx     
adj.损害的,造成伤害的
参考例句:
  • We know that heat treatment is detrimental to milk.我们知道加热对牛奶是不利的。
  • He wouldn't accept that smoking was detrimental to health.他不相信吸烟有害健康。
4 marine 77Izo     
adj.海的;海生的;航海的;海事的;n.水兵
参考例句:
  • Marine creatures are those which live in the sea. 海洋生物是生存在海里的生物。
  • When the war broke out,he volunteered for the Marine Corps.战争爆发时,他自愿参加了海军陆战队。
5 symbiotic FrbwR     
adj.共栖的,共生的
参考例句:
  • Racing has always had a symbiotic relationship with betting.赛马总是与赌博相挂钩。
  • Engineering completely new symbiotic relationship is obviously not an imminent possibility.筹划完全新的共生关系显然是可能性不大。
6 sperm jFOzO     
n.精子,精液
参考例句:
  • Only one sperm fertilises an egg.只有一个精子使卵子受精。
  • In human reproduction,one female egg is usually fertilized by one sperm.在人体生殖过程中,一个精子使一个卵子受精。
7 spawn qFUzL     
n.卵,产物,后代,结果;vt.产卵,种菌丝于,产生,造成;vi.产卵,大量生产
参考例句:
  • The fish were madly pushing their way upstream to spawn.鱼群为产卵而疯狂地向上游挤进。
  • These fish will lay spawn in about one month from now.这些鱼大约一个月内会产卵。
8 spawning e223115a66b2213a16c438abb9a400cb     
产卵
参考例句:
  • Encounter sites have a small chance of spawning a "Commander" NPC. 遭遇战地区有很小的几率遇到NPC指挥官。
  • Instantly revives your Champion at your Spawning Pool, 9 minute cooldown. 立即在出生地复活你的英雄,冷却时间9分钟。
9 fertilizing 79a37a7878a3e9b841687c9b9748dd60     
v.施肥( fertilize的现在分词 )
参考例句:
  • Sometimes the preliminary step must be taken of reducing weed population before fertilizing. 有时候,在施肥之前,必须采取减少杂草密度的预备性步骤。 来自辞典例句
  • The self fertilizing garden can also be planted in raised beds. 自我施肥的菜园也可以在苗圃床中种植。 来自互联网
10 proximity 5RsxM     
n.接近,邻近
参考例句:
  • Marriages in proximity of blood are forbidden by the law.法律规定禁止近亲结婚。
  • Their house is in close proximity to ours.他们的房子很接近我们的。
11 remarkable 8Vbx6     
adj.显著的,异常的,非凡的,值得注意的
参考例句:
  • She has made remarkable headway in her writing skills.她在写作技巧方面有了长足进步。
  • These cars are remarkable for the quietness of their engines.这些汽车因发动机没有噪音而不同凡响。
12 regained 51ada49e953b830c8bd8fddd6bcd03aa     
复得( regain的过去式和过去分词 ); 赢回; 重回; 复至某地
参考例句:
  • The majority of the people in the world have regained their liberty. 世界上大多数人已重获自由。
  • She hesitated briefly but quickly regained her poise. 她犹豫片刻,但很快恢复了镇静。
TAG标签: sea coral bleaching
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