追踪珊瑚虫幼虫以加深对珊瑚的了解-凯发k8官网

追踪珊瑚虫幼虫以加深对珊瑚的了解
文章来源:未知 文章作者:meng 发布时间:2010-06-10 02:27 字体: [ ] 
(单词翻译:双击或拖选)

scientists can predict almost to the hour when the reef-building "rice coral" off oahu will 1(产卵,大量生产) , but no one knows where the resulting floating coral 2(幼虫,幼体) go. from june 11-16, 2010, the u.s. geological survey, the university of hawai'i at mānoa's kewalo 3 laboratory, and malama maunalua will use satellite-tracked drifters to track the coral larvae's dispersal(分散,传播) along o'ahu's south shore in an effort to better understand why certain reefs in maunalua bay are doing well and others are doing poorly.

the next coral 4 event will begin after the next new moon, which is june 12. the scientists will use underwater instruments to monitor tides, waves, currents, temperature, 5(盐度) , chlorophyll(叶绿素) , and water clarity throughout the bay. they will release satellite-tracked drifters to float along with the buoyant(有浮力的,轻快的) coral eggs and larvae and monitor the drifters' positions all night to determine if they are being transported into, retained in, or 6 out of maunalua bay.

during the experiment, boaters and swimmers should keep an eye out for, and avoid the small (8-inch diameter) orange drifters and some small yellow floats marking instrument packages, all with "usgs" markings.

maunalua bay has been degraded by polluted runoff(径流,决赛) and 7(沉淀物) , invasive 8(海藻) , and unsustainable harvesting. reduced water and bottom quality tied to 9 discharges and invasive algae affect not only the corals in the bay, but the ability of larvae from elsewhere to 10(补充) 11 populations. community-based efforts to remove invasive algae and reduce runoff and 12 will ultimately lead to improved coral and fish resources. recovery of the bay also depends in part on the reproductive health of the local and adjacent(临近的,毗邻的) coral reefs as sources of coral seed.

because they are living organisms, corals are born and die. if new corals are not produced and able to settle, replacing those that die from both natural and human-induced causes, the reefs will eventually disappear, along with the other associated marine resources. once scientists understand the circulation, larval dispersal patterns, and "connectivity" between reefs, managers can identify where recovery efforts should be focused.



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1 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。
2 w2cxp     
n.幼虫
参考例句:
  • larvae are parasitic on sheep.幼虫寄生在绵羊的身上。
  • the larvae prey upon small aphids.这种幼虫以小蚜虫为食。
3 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。
4 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。
5 uyvx9     
n.盐分;咸度;盐浓度;咸性
参考例句:
  • in the sea water sampled the salinity is two parts per thousand.在取样的海水中,盐度为千分之二。
  • in many sedimentary basins the salinity of the formation water increases with depth or compaction.在许多沉积盆地中,地层水的含盐量随深度或压实作用而增高。
6 b24c637ca8e58669bce3496236c839fa     
adj. 被驱散的, 被分散的, 散布的
参考例句:
  • the clouds dispersed themselves. 云散了。
  • after school the children dispersed to their homes. 放学后,孩子们四散回家了。
7 isbyk     
n.沉淀,沉渣,沉积(物)
参考例句:
  • the sediment settled and the water was clear.杂质沉淀后,水变清了。
  • sediment begins to choke the channel's opening.沉积物开始淤塞河道口。
8 tk6yw     
n.水藻,海藻
参考例句:
  • most algae live in water.多数藻类生长在水中。
  • algae grow and spread quickly in the lake.湖中水藻滋蔓。
9 jgqwo     
n.转折点,分水岭,分界线
参考例句:
  • our marriage was at a watershed.我们的婚姻到了一个转折关头。
  • it forms the watershed between the two rivers.它成了两条河流的分水岭。
10 kcayv     
vt.补充;(把…)装满;(再)填满
参考例句:
  • i always replenish my food supply before it is depleted.我总是在我的食物吃完之前加以补充。
  • we have to import an extra 4 million tons of wheat to replenish our reserves.我们不得不额外进口四百万吨小麦以补充我们的储备。
11 31d93165da679292f22e5e2e5aa49a03     
adj. 枯竭的, 废弃的 动词deplete的过去式和过去分词
参考例句:
  • food supplies were severely depleted. 食物供应已严重不足。
  • both teams were severely depleted by injuries. 两个队都因队员受伤而实力大减。
12 mseyj     
n.沉淀,沉积
参考例句:
  • sedimentation, the damage of a breach are problems, too. 而且沉积和决口的问题,也是存在的。 来自英语晨读30分(高二)
  • sedimentation and denudation play a role in exceptional cases. 沉积和剥蚀作用的影响只在特殊情况下起作用。
tag标签: coral reefs larvae
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