Paleoecology of the Large-mammal Community in Interior Alaska during the Late Pleistocene
Paleoecology of the Large-mammal Community in Interior Alaska during the Late Pleistocene
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更新世晚期阿拉斯加内陆大型哺乳动物群落的古生态学
DOI：
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发表时间：
1968
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影响因子：
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通讯作者：
R. D. Guthrie
中科院分区：
文献类型：
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作者：
R. D. Guthrie
本文对阿拉斯加州费尔班克斯附近晚更新世沉积物中的四种大型哺乳动物化石组合进行了古生态学研究，着重研究了该群落的结构、组成、生境和随后灭绝的模式。所有四个动物群主要由食草动物组成。野牛、马和猛犸是最常见的物种。这个复杂的大型哺乳动物群落的许多组成物种在威斯康星州冰川期结束时灭绝，留下了今天存在于阿拉斯加的相对落后的群落。化石群落中食草动物的高比例表明，阿拉斯加内陆在更新世晚期是一个草原群落。
This study of the palcoecology of four fossil assemblages of large mammals from the late Pleistocene sediments near Fairbanks, Alaska, emphasizes the structure, composition, habitat, and the pat- tern of subsequent extinction of the community. All four faunas were composed predominantly of grazers. Bison, horse, and mammoth were the most common species. Many component species of this complex community of large mammals became extinct near the close of the Wisconsin glaciation, leaving the comparatively depauperate community that exists in Alaska today. The high percentage of grazers in the fossil community suggests that interior Alaska was a grassland en- vironment during the late Pleistocene.