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Cantrell, S. A, D. J Lodge, V. Cruz, L. M Garcia, J. R Perez-Jimenez, and M. Molina. 2012. “Differential Abundance Of Microbial Functional Groups Along The Elevation Gradient From The Luquillo Mountains To The Coast”. Ecological Bulletins 54(Elevation Gradient in the Luquillo Mountains of Puerto Rico (2012): 87-100. http://www.treesearch.fs.fed.us/pubs/45703.