翻訳と辞書 Words near each other ・ Animal training ・ Animal transformation fantasy ・ Animal transportation ・ Animal Transportation Association ・ Animal transporter ・ Animal trapping methods ・ Animal Treasure Island ・ Animal Man ・ Animal Man (comic book) ・ Animal Management in Rural and Remote Indigenous Communities ・ Animal Mechanicals ・ Animal Medical Center ・ Animal Medical Center of New York ・ Animal Metaphor Test ・ Animal migration ・ Animal migration tracking ・ Animal Miracles ・ Animal model of autism ・ Animal model of ischemic stroke ・ Animal model of schizophrenia ・ Animal model of stroke ・ Animal models of depression ・ Animal Mother (album) ・ Animal mummy ・ Animal Mystic ・ Animal name changes in Turkey ・ Animal navigation ・ Animal Nightlife ・ Animal Nitrate ・ Animal Nocturno Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Animal migration tracking ： ウィキペディア英語版 Animal migration tracking For years scientists have been tracking animals and the ways they migrate. One of the many goals of animal migration research has been to determine where the animals are going; however, researchers also want to know why they are going "there". Researchers not only look at the animals' migration but also what is between point a and point b to determine if a species is moving to new locations based on food density, a change in water temperature, and the animal's ability to adapt to these changes. == Technologies for tracking == In the fall of 1803, American Naturalist John James Audubon wondered whether migrating birds returned to the same place each year. So he tied a string around the leg of a bird before it flew south. The following spring, Audubon saw the bird had indeed come back. Scientists today still attach tags, such as metal bands, to track movement of animals. Metal bands require the re-capture of animals for the scientists to gather data; the data is thus limited to the animal's release and destination points. Recent technologies have helped solve this problem. Some electronic tags give off repeating signals that are picked up by radio devices or satellites while other electronic tags could include archival tags (or data loggers). Scientists can track the locations and movement of the tagged animals without recapturing them using this RFID technology or satellites. These electronic tags can provide a great deal of data. However, they are more expensive than the low-tech tags that aren't electronic. Also, because of their size and weight, electronic tags may create drag on some animals, slowing them down. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Animal migration tracking」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.