C
LONDON ( Reuter)-- Ecotourism is causing a lot of damage to wildlife and may be endangering the survival of the very animals people are flocking(蜂拥而至) to see, according to researchers.
Biologists and conservationists are worried because polar bears, dolphins, penguins and other creatures are getting stressed and losing weight and some are dying.
"Evidence is growing that many animals do not react well to tourists in their backyard,” New Scientist magazine said.
The immediate effects researchers have noticed are changes in behavior, heart rates, or stress hormone levels but they fear it could get much worse and over the long term could endanger the survival of the very wildlife they want to see.
Although money produced through ecotourism, which has been growing at about 10-percent-30 percent a year, has major benefits for poor countries and people living in rural areas, the Swiss-based World Conservation Union and some governments fear not all projects are audited (审计) and based on environmentally friendly policies, according to the magazine,
"The transmission(传播) of disease to wildlife, or small changes to wildlife health through disturbance of daily life or increased stress levels, while not obvious to the casual observer, may translate to lower survival and breeding ,"saida professor in New Zealand.
Scientists have noticed that bottleneck dolphins along the northeastern coast of New Zealand become nervously excited when tourist boats arrive. Similar changes in behavior have been observed in polar bears and yellow-eyed penguins in areas visited by ecotourists are producing smaller babies.
【2017年高考英语二轮复习讲义阅读理解训练15:(答案)】相关文章:
★ 湖南省岳阳市2014高考英语一轮单项选择训练题(6)及答案
★ 安徽省淮南市2014高考英语一轮单项选择及文章训练(12)及答案
★ 常熟市2014高考英阅读理解语一轮(暑假)训练题(3)及答案
★ 2014届高考英语一轮复习课时作业(三十四)选修6Module 4《Music》(外研版)
★ 重庆市2014高考英语阅读理解一轮(精品)训练题(8)附答案
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21