Tigers don’t have a reputation for being very accommodating, but a new study challenges the long-held conservation belief that these large carnivores need lots of people-free space.
This new understanding is especially critical because, since the start of the 20th century, the tiger population has declined by 97 percent to approximately 3,000 worldwide largely due to loss of habitat from encroaching cities and agriculture.
Captured on camera
Michigan State University graduate student Neil Carter set up motion-detecting camera traps in and around Nepal’s Chitwan National Park to study human-tiger interaction.
The park, nestled in a valley of the Himalayas and protected by army patrols, is home to about 120 tigers.
But the area is home to people, too. Tourists visit the park and local villagers live on its periphery, where tigers also roam.
Carter says the cameras, at 80 different sites, captured intense activity inside and outside the park.
“What we started seeing was tigers were everywhere, people were everywhere and obviously they could not have been in the exact same places at the exact same time because there will be reports of all kinds of conflicts, left and right," he says. "So what we ended up discovering was that the tigers were displacing their time and becoming more active at night instead of during the day.”
Switch to night shift
While tigers typically move around at any time of the day or night, the camera images show that the vast majority of the big cats were more active at night, even roaming outside the park on the same dirt roads and narrow footpaths used by humans. Carter was surprised to find the tigers shifted their activities in time, but not space, despite such intense human presence.
“There was no relationship between the number of vehicles or people or even different types of people. Tigers were there. They were everywhere. They were widespread and ubiquitous and also the prey, their prey, was really abundant," he says. "And so that I think is really sort of the critical link. Tigers are not going to leave an area that has their food.”
New hope for endangered wildlife
Carter says the results of the study could change conservation management, especially since about 80% of tiger habitat is now dominated by humans. He says the key will be to figure out what conditions foster the co-existance the study documents.
“We want to see if we can duplicate that in all these multiple use forests and areas where tigers occur, but people also depend on those forests.”
Carter says the study, published in the Proceedings of the National Academy of Sciences, shows promise that humans and wildlife can thrive in the same environment, but that more work must be done to understand the complicated connection between the two worlds.
2015江苏省盐城中考英语试题及答案(word版)
2014年黑龙江哈尔滨中考英语真题试题答案(图片版)
2014年甘肃白银中考英语真题试题及答案(扫描版)
2014年四川乐山中考英语真题试题答案(扫描版)
2015湖北省孝感中考英语试题及答案(word版)
2014年黑龙江哈尔滨中考英语真题试题及答案(图片版)
2015贵州省安顺中考英语试题及答案(word版)
2015山东省济宁中考英语试题及答案(word版)
2015天津中考英语试题及答案(word版)
2014年福建漳州中考英语真题试题答案(扫描版)
2014年贵州遵义中考英语真题试题及答案(图片版)
2014年湖北随州中考英语真题试题答案(图片版)
2014年广西来宾中考英语真题试题答案
2014年湖北咸宁中考英语真题试题答案(图片版)
2015江苏省苏州中考英语试题及答案(word版)
2014年云南昆明中考英语真题试题答案(Word版)
2014年四川巴中中考英语真题试题答案(扫描版)
2014年黑龙江绥化中考英语真题试题及答案(图片版)
2014年全国各地中考英语真题与答案汇总(更新中……)
2014年山东临沂中考英语真题试题及答案(图片版)
2014年山东临沂中考英语真题试题答案(文字版)
2014年江苏淮安中考英语真题试题及答案(图片版)
2014年湖北襄阳中考英语真题试题及答案(扫描版)
2015安徽省中考英语试题及答案(word版)
2015湖南省益阳中考英语试题及答案(word版)
2014年福建漳州中考英语真题试题及答案(扫描版)
2015山东省泰安中考英语试题及答案(word版)
2014年湖北十堰中考英语真题试题及答案(图片版/Word版)
2014年四川乐山中考英语真题试题及答案(扫描版)
2014年四川凉山中考英语真题试题及答案(图片版)
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |