Rock-weathering by lichens in Antarctic: patterns and mechanisms |
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| Authors: | CHEN Jie Hans-Peter Blume |
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| Institution: | 1. Institute of Soil Science, CAS, Nanjing 210008, China|
2. Institute of Plant Nutrition and Soil Science, University of Kiel, D-24098 Kiel, Germany |
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| Abstract: | Saxicolous species of lichens are able to induce and accelerate weathering of their rock substrate, and effects of lichens on substrate can be attributed to both physical and chemical causes. This paper is focused on biotic weathering actions of epilithic and endolithic species on the different rock types (sandstones and volcanogenic rocks) in Antarctica. The patterns, mechanisms, processes and neoformations of rock-weathering resulting from lichen colonization are expounded in detail. Furthermore, it is pointed out that, for a better understanding of the impacts of lichens on environments, the studies on the rate of biotic weathering and the comprehensive involvement of the lichen effects on weathering of natural rocks remain to be carried out in Antarctica. |
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| Keywords: | lichen rock-weathering lichen-rock interface biogenic minerals Antarctic |
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