Geographic variation of diet and habitat of the Mexican populations of Columbian Mammoth (Mammuthus columbi)

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• 作者：V¨ªctor Adri¨¢n P¨¦rez-Crespo ; Joaqu¨ªn Arroyo-Cabrales ; Mouloud Benammi ; Eileen Johnson ; Oscar J. Polaco ; Antonio Santos-Moreno ; Pedro Morales-Puente ; Edith Cienfuegos-Alvarado
• 刊名：Quaternary International
• 出版年：2012
• 出版时间：25 October, 2012
• 年：2012
• 卷：276-277
• 期：Complete
• 页码：8-16
• 全文大小：432 K

文摘

Isotopic data (¦Ä¹³C and ¦Ä¹⁸O) for 25 enamel samples from Mammuthus columbi for 13 Mexican localities are provided. On average, the samples provide evidence of a mixed C₃/C₄ diet. The population consists of six individuals with an exclusive C₄ plant diet, and 19 with some consumption of C₃ plants. Latitude, longitude, and elevation do not have an affect on the average diet. Comparisons of data from the Mexican specimens with those values in the literature for samples from California, Arizona, Florida, Nevada, New Mexico, and Texas (USA) show that food habits in North America were similar. Comparisons of ¦Ä¹³C and ¦Ä¹⁸O values with those of javelinas, mastodonts, tapirs, and white-tailed deer from the Floridan Late Pleistocene confirm that mammoths primarily were inhabitants of open areas, indicating a probable case of biomic specialization.