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 10-30 percent a year, has major benefits for poor countries and people living in rural areas, the Swiss-based World Conservation Union (IUCN) and some governments fear not all projects are audited(审计) and based on environmentally friendly policies,according to the magazine.
Transmission 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,” said Philip Seddon , of the University of Otago in Dunedin, 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 colorists are producing smaller babies.
Conservationists are now calling for more research into the effect of ecotourism on animals and say the industry must be developed carefully. They also want studies done before new ecotourism projects are started.
【2017届浙江省常山县高考英语一轮复习阅读理解专练:5(含答案)】相关文章:
★ 2017届高考英语二轮复习书面表达限时测验:2(含解析)
★ 辽宁省辽阳市2014高考英语单项选择一轮(暑假)训练(14)附答案
★ 【北师大版】2014届高考英语一轮复习指导课时作业:Unit 10 A卷 Word版含解析
★ 【人教版】2014届高考英语一轮复习指导考点针对练:必修2 unit3《Computers》
★ 四川省2016届高考英语一轮复习课时作业(39) Module 3 Literature 外研版选修8
★ 辽宁省辽阳市2014高考英语单项选择一轮(暑假)训练(13)附答案
★ 辽宁省辽阳市2014高考英语单项选择一轮(暑假)训练(5)附答案
★ 2017届高考英语二轮复习大题冲关秘籍短文改错:创新押题(含解析)
★ 安徽省淮南市2014高考英语一轮单项选择及文章训练(15)及答案
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21