THE GREAT AMERICAN BIOTIC INTERCHANGE: PATTERNS AND PROCESSES1
THE GREAT AMERICAN BIOTIC INTERCHANGE: PATTERNS AND PROCESSES1
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伟大的美国生物交流：模式和过程1
DOI：
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发表时间：
2006
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影响因子：
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通讯作者：
S. David Webb
中科院分区：
文献类型：
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作者：
S. David Webb
摘要当巴拿马大陆桥就位约2.7 Ma时，触发了美洲生物大交换(GABI)，这是北美和南美洲陆地哺乳动物动物群的主要混合。北方迁徙的四个科(原蟹科、猫科、塔阿苏科和骆驼科)以中等速度多样化，而其他四个科，犬科、Mustelidae、Cervidae，特别是Muridae，则爆炸性地进化。因此，现存的南美属中有一半是北方移民的后代。这种交流的另一个主要结果是来自亚马逊的移民征服了热带北美，这一插曲证明了新热带领域一词的合理性。
Abstract When the Panamanian land bridge was emplaced about 2.7 Ma, it triggered the Great American Biotic Interchange (GABI), a major mingling of land mammal faunas between North and South America. Four families of northern immigrants (Procyonidae, Felidae, Tayassuidae, and Camelidae) diversified at moderate rates, while four others, Canidae, Mustelidae, Cervidae, and especially Muridae, evolved explosively. As a consequence, half of living South American genera are descendants of northern immigrants. The other major consequence of the interchange was the conquest of tropical North America by immigrants from Amazonia, an episode that justifies the term Neotropical Realm.