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Mammoths died for want of a few herbs

机译:猛mm象死于缺少一些草药

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摘要

It was the superfoods wot dunnit. Woolly mammoths may have starved to death when changes in the climate deprived them of their best food: flowering herbs. Perhaps unexpectedly given their size and the chilly climates they lived in, woolly mammoths are thought to have survived on a diet of steppe grasses. But that's not the whole story. A study of frozen stomach contents and frozen DNA found in the dirt across the Arctic suggests that the ice-age megafauna primarily ate a richer class of plants called forbs. At first glance the difference seems negligible. Forbs are flowering herbs, and modern examples include clover. But whereas grasses are tough to digest and relatively low in nutrients, forbs are high in protein.
机译:那是超级食物,顿时。当气候变化剥夺了他们最好的食物:开花的草药时,毛茸茸的猛mm象可能饿死了。鉴于它们的体型和所处的寒冷气候,也许令人意外地发现,猛ma象在吃过草原草后得以幸存。但这还不是全部。一项研究表明,北极地区土壤中的冰冻胃内容物和冰冻DNA存在于冰河时代的大型动物中,主要食入了一种叫做“ forbs”的植物。乍一看,差异似乎可以忽略不计。叉子是开花的药草,现代的例子包括三叶草。但是,尽管草难以消化且营养成分相对较低,但草却富含蛋白质。

著录项

  • 来源
    《New scientist》 |2014年第2955期|12-12|共1页
  • 作者

    Catherine Brahic;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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