作者: Kerry A. Gunther , Charles T. Robbins , Christopher Servheen , Charles C. Schwartz
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摘要: Summary Biologists now understand many facets of the biology Yellowstone’s griz-zly bears. While we continue to exam-ine home ranges, movements, births, deaths, and other typical wildlife param-eters, our vocabularies have changed include terms such as GPS collars, iso-topes, isotope ratio mass spectrometry, DNA, polymerase chain reaction, atomic absorption spectrometry. Many these new techniques allowed us learn more about Yellowstone bears without realizing that they were subjects in a scientific study. One museum curator commented given life meaning their long-dead specimens, he could talk diets family lineages. However, because foods therefore well-being park’s grizzly will always be changing, must stud-ies for long National Park exists roam its beautiful landscapes.GPS collars allow scientists pinpoint bear feeding sites.