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Difference between revisions of "Lichen"
added link to psychrophiles
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Lichens have a number of adaptations that enable them to survive in Antarctica. They are able to exhibit net photosynthesis while frozen at temperatures as low as -20°C. They can absorb water from a saturated atmosphere when covered by snow. Additionally, snow cover affords protection from the elements and most growth appears to occur when they are buried beneath at least a thin protective layer of snow. | Lichens have a number of adaptations that enable them to survive in Antarctica. They are able to exhibit net photosynthesis while frozen at temperatures as low as -20°C. They can absorb water from a saturated atmosphere when covered by snow. Additionally, snow cover affords protection from the elements and most growth appears to occur when they are buried beneath at least a thin protective layer of snow. | ||
Like most [[psychrophiles]], they can survive long unfavorable periods of drought in a dry and inactive state. In continental [[Westarctica]], many lichens are able to absorb water vapor from snow and ice. | |||
==Effect of climate change on Antarctic lichen== | ==Effect of climate change on Antarctic lichen== | ||