Rural Cameras Capture Animals in the Wild
Have you ever wondered what wild animals do when no one is watching?
Scientists have been able to document the "private" moments of wildlife with leading edge technology. Low cost, dependable and small modern cameras amount to a big help.
Cameras placed in hard-to-reach places have captured images of everything from small desert cats called ocelots to larger snow-loving felines called lynx in the northern Rocky Mountains.
Learning new information from far-away cameras
Grant Harris is a government biologist with the United States Fish and Wildlife Service in Albuquerque, New Mexico. In his words, "there's no doubt," that these rural cameras are important tools to learn new information on wildlife.
Harris said some images help scientists see the effects of climate change. For example, the desert animal javelina and the tree-loving coatimundi have been caught on cameras north of their normal habitat. Harris said this could mean global warming is expanding their range northward.
Researchers with the Wyoming Migration Initiative, or WMI, are among those using rural cameras along with global positioning systems, or GPS.
They attach GPS devices to elk, mule deer and antelope in and around Yellowstone National Park. Then they can record their movements, or migrations. But WMI director Matthew Kauffman says as those devices are limited so is the amount of information they can gather from GPS.
"You see one animal migrating, you don't know if it's migrating by itself, if it's migrating with a calf, or if it's migrating with 40 other animals," Kauffman said.
However cameras can be left in very rural areas for days, weeks or even months. They can provide information on how many animals are moving over a given period of time, he said.
Putting those cameras in place requires careful planning.
"There's this tension between subjectivity in where you put your camera and where it's statistically sound," Harris said.
Sometimes, humans appear in the images. "I've seen people moon cameras, and that's always funny," he said.
Rural video can show details about animal behavior, such as the calls made by migrating mule deer. Also, some cameras live-stream animal life, showing everything from bison in Saskatchewan, Canada, to the underwater kelp forest off of California's Channel Islands.
However, rural cameras have their problems too. Animals such as wolverines and bears sometimes attack them. Scientists do not know if the attacks are the result of anger or interest.
Also, the devices have become popular tools to help hunters look for animals. Some people argue that it is unfair to use the cameras that way.
Even with such problems, rural cameras are clearly an important scientific tool in researching wild animals.
I'm Phil Dierking.
1.wild animals 野生动物
The number of wild animals on the earth is dwindling.
2.look for 寻找
We all need to look for ways to reduce our carbon footprint.
3.climate change 气候变化
Carbon emissions exacerbate the global climate change problem.
4.global warming 全球变暖
Global warming is a real problem.
5.In his words, "there's no doubt," that these rural cameras are important tools to learn new information on wildlife.
there's no doubt 毫无疑问
There's no doubt about it. He's the one the policemen are looking for.
Judging from his tone, there's no doubt he is against it.
6.They can provide information on how many animals are moving over a given period of time, he said.
a period of time 一段时间
She spent a period of time working with people dying of cancer
After a period of time, we have learned a lot.
科学家已经能够采用先进技术记录野生动物的“私人”时刻 。低成本、可靠，小巧的现代摄像头给予了很大帮助 。
格兰特·哈里斯是新墨西哥州阿尔伯克基市美国鱼类和野生动物服务局的生物学家 。用他的话说，“毫无疑问”，这些野外相机是了解野生动物新信息的重要工具 。
哈里斯表示，一些照片可以帮助科学家们探寻气候变化的影响 。例如，沙漠动物西瑞猪和喜欢爬树的长鼻浣熊在正常栖息地以北的地方被相机捕捉到 。哈里斯说，这可能意味着全球变暖正在向北蔓延 。
他们将GPS设备安装在黄石国家公园内外的麋鹿，骡鹿和羚羊身上 。然后他们可以记录它们的活动，或者迁徙 。不过，怀俄明州迁移计划主管马修·考夫曼指出，由于这些设备的局限性，他们从GPS中收集的信息也是有限的 。
不过，相机可以在野外停留数日，数周甚至数月 。他说，他们可以提供一段时间内有多少动物正在迁徙的信息 。
有时，相机会拍摄到人类 。他说：“我看过人类意外“入境”，画面十分有趣 。”
野外相机能够显示出动物行为的细节，例如骡鹿迁移中发出的叫声 。此外，一些相机还能直播动物的生活，记录下加拿大萨斯喀彻温的野牛以及加利福尼亚海峡群岛的水下海藻森林 。
然而，野外相机也有瓶颈 。有时候会遭到狼獾和熊等动物攻击 。科学家们不知道这些攻击是出于愤怒还是好奇 。
此外，野外相机已经成为猎人寻找动物的常用辅助工具 。有人认为这样使用相机是不公平的 。