非洲草原上的大象数量大幅下降
文章来源:未知 文章作者:enread 发布时间:2016-09-01 09:10 字体: [ ]  进入论坛
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Paul G. Allen's Vulcan Inc. today announced the results of the $7 million, three-year Great Elephant Census1 (GEC - http://www.greatelephantcensus.com/), the first-ever pan-African survey of savanna2 elephants using standardized3 data collection and validation4 methods. Managed by Elephants Without Borders (EWB,) the immense project's report confirms substantial declines in elephant numbers over just the last decade. The researchers report that the current rate of species decline is 8 percent per year, primarily due to poaching. The Pan-African survey shows the estimated savannah elephant population to be 352,271 within the 18 countries surveyed to-date, representing at least 93 percent of savannah elephants in these countries. For savannah elephant populations in 15 of the GEC countries, for which repeat counts were available, populations declined by 30 percent between 2007 and 2014. 84 percent of the population surveyed was sighted in legally protected areas compared to 16 percent in unprotected areas. However, large numbers of carcasses were observed in many protected areas indicating that elephants are struggling both within and outside of parks. Experts say the ivory trade and poaching pose serious threats and there is now a risk that savannah elephants could disappear from parts of Africa. The scientific report of the GEC findings was published on August 31, in the peer-reviewed open access journal PeerJ and is freely accessible at https://peerj.com/articles/2354/ 
 
The GEC team used the most accurate, up-to-date counting and statistical5 methods to analyze6 data, accurately7 determining the number and distribution of the great majority of African savanna elephants and this now provides a baseline on a continental8 scale for future surveys and trend analyses, that wildlife ecologists will be able to use to coordinate9 conservation efforts. 
 
Overall, 90 scientists, six non-governmental organization partners, and two advisory10 partners, managed by a team at Paul Allen's Vulcan Inc. collaborated11 in the work. These included the organizations Elephants Without Borders, the Wildlife Conservation Society, the Nature Conservancy, Frankfurt Zoological Society, African Parks Network and the advisory groups Save the Elephants and the International Union for Conservation of Nature's African Elephant Specialist Group. The effort was conducted which partnered with in country park biologists, rangers12, and game wardens13.


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1 census arnz5     
n.(官方的)人口调查,人口普查
参考例句:
  • A census of population is taken every ten years.人口普查每10年进行一次。
  • The census is taken one time every four years in our country.我国每四年一次人口普查。
2 savanna bYbxZ     
n.大草原
参考例句:
  • The savanna is also the home of meat-eaters--the lion,leopard,and hyena who feed on the grasseaters.大草原也是食肉动物的家乡--狮子、豹、鬣狗--它们都是以草食动物维持生命的。
  • They sped upon velvet wheels across an exhilarant savanna.他们的马车轻捷地穿过一片令人赏心悦目的大草原。
3 standardized 8hHzgs     
adj.标准化的
参考例句:
  • We use standardized tests to measure scholastic achievement. 我们用标准化考试来衡量学生的学业成绩。
  • The parts of an automobile are standardized. 汽车零件是标准化了的。
4 validation a617908b172c473cb8e8cda059e55bf0     
n.确认
参考例句:
  • If the countdown timer ever hits zero, do your validation processing. 处理这种情况的方法是在输入的同时使用递减计时器,每次击键重新计时。如果递减计时器变为零,就开始验证。 来自About Face 3交互设计精髓
  • Although the validation control is a very widespread idiom, most such controls can be improved. 虽然确认控件是非常广泛的习惯用法,但还有很多有待改进的地方。 来自About Face 3交互设计精髓
5 statistical bu3wa     
adj.统计的,统计学的
参考例句:
  • He showed the price fluctuations in a statistical table.他用统计表显示价格的波动。
  • They're making detailed statistical analysis.他们正在做具体的统计分析。
6 analyze RwUzm     
vt.分析,解析 (=analyse)
参考例句:
  • We should analyze the cause and effect of this event.我们应该分析这场事变的因果。
  • The teacher tried to analyze the cause of our failure.老师设法分析我们失败的原因。
7 accurately oJHyf     
adv.准确地,精确地
参考例句:
  • It is hard to hit the ball accurately.准确地击中球很难。
  • Now scientists can forecast the weather accurately.现在科学家们能准确地预报天气。
8 continental Zazyk     
adj.大陆的,大陆性的,欧洲大陆的
参考例句:
  • A continental climate is different from an insular one.大陆性气候不同于岛屿气候。
  • The most ancient parts of the continental crust are 4000 million years old.大陆地壳最古老的部分有40亿年历史。
9 coordinate oohzt     
adj.同等的,协调的;n.同等者;vt.协作,协调
参考例句:
  • You must coordinate what you said with what you did.你必须使你的言行一致。
  • Maybe we can coordinate the relation of them.或许我们可以调和他们之间的关系。
10 advisory lKvyj     
adj.劝告的,忠告的,顾问的,提供咨询
参考例句:
  • I have worked in an advisory capacity with many hospitals.我曾在多家医院做过顾问工作。
  • He was appointed to the advisory committee last month.他上个月获任命为顾问委员会委员。
11 collaborated c49a4f9c170cb7c268fccb474f5f0d4f     
合作( collaborate的过去式和过去分词 ); 勾结叛国
参考例句:
  • We have collaborated on many projects over the years. 这些年来我们合作搞了许多项目。
  • We have collaborated closely with the university on this project. 我们与大学在这个专案上紧密合作。
12 rangers f306109e6f069bca5191deb9b03359e2     
护林者( ranger的名词复数 ); 突击队员
参考例句:
  • Do you know where the Rangers Stadium is? 你知道Rangers体育场在哪吗? 来自超越目标英语 第3册
  • Now I'm a Rangers' fan, so I like to be near the stadium. 现在我是Rangers的爱好者,所以我想离体育场近一点。 来自超越目标英语 第3册
13 wardens e2599ddd0efb9a7622608a7c43692b1e     
n.看守人( warden的名词复数 );管理员;监察员;监察官
参考例句:
  • Air raid wardens in tin hats self-importantly stalked the streets. 空袭民防队员戴着钢盔神气活现地走在街上昂首阔步。 来自辞典例句
  • The game wardens tranquillized the rhinoceros with a drugged dart. 猎物保护区管理员用麻醉射器让犀牛静了下来。 来自辞典例句
TAG标签: Africa elephants savanna
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