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Marco A. Molina-Montenegro, Natalia Ricote-Martínez, Carlos Muñoz-Ramírez, Susana Gómez-González, Cristian Torres-Díaz, Cristian Salgado-Luarte and Ernesto Gianoli Positive interactions between the lichen Usnea antarctica (Parmeliaceae) and the native flora in Maritime Antarctica Journal of Vegetation Science 24

Version of Record online: 25 SEP 2012 | DOI: 10.1111/j.1654-1103.2012.01480.x

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We demonstrated the presence of facilitation in the Antarctic environment by recording a greater number of species and higher survival of Deschampsia associated with U. antarctica cushions than outside. On the other hand, our result indicated that cushions ameliorated the extreme abiotic conditions of Antarctic environment. Thus, cushions of U. antarctica may be a key component structuring the Antarctic landscape and maintaining local species richness.

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