Variations of plant and soil 87Sr/86Sr along the slope of a tropical inselberg Anne Poszwa, Bruno Ferry, Benoît Pollie, Catherine Grimaldi, Pierre Charles-Dominique, Michel Loubet and Etienne Dambrine Ann. For. Sci., 66 5 (2009) 512 Published online: 09 July 2009 DOI: 10.1051/forest/2009036