Glaciers and ice sheets as a biome
Glaciers and ice sheets as a biome
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DOI：
10.1016/j.tree.2011.09.012
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发表时间：
2012-04-01
影响因子：
16.8
通讯作者：
Laybourn-Parry, Johanna
中科院分区：
文献类型：
--
作者：
Anesio, Alexandre M.;Laybourn-Parry, Johanna
苔原是典型的地理学和生物学教科书中描述的最冷的生物群落。在冰冻圈内，在南极、北极和高山地区有大片的冰，这些冰不被认为是任何生物群落的一部分。在夏季，冰川、冰帽和冰架的表面有大量融化，此时微生物群落变得活跃，在冰冻圈内的碳和其他元素的循环中发挥重要作用。在这篇评论中，我们建议是时候将冰冻圈视为地球生物群落之一了。冰冻圈生物群系包括极端环境，典型的食物网被截断，主要是病毒、细菌、原生动物和藻类，具有不同的生态地理结构。
The tundra is the coldest biome described in typical geography and biology textbooks. Within the cryosphere, there are large expanses of ice in the Antarctic, Arctic and alpine regions that are not regarded as being part of any biome. During the summer, there is significant melt on the surface of glaciers, ice caps and ice shelves, at which point microbial communities become active and play an important role in the cycling of carbon and other elements within the cryosphere. In this review, we suggest that it is time to recognise the cryosphere as one of the biomes of Earth. The cryospheric biome encompasses extreme environments and is typified by truncated food webs dominated by viruses, bacteria, protozoa and algae with distinct biogeographical structures.