2.3. Statistical analysis
For compare salinity and penetrability measures, albeit comparing two groups (areas) we preferred ANOVA over t-test. A PERMANOVA analysis using Bray–Curtis tests in 9999 random permutations (Anderson, 2001) was run to compare number of young, number of mature, dbh, height and biomass between trees of Restored and Self-recovered Areas. An ANOVA was also used to compare G. cruentata and U. cordatus crabs densities between the two managed areas before the beginning of the experiment (2006) and five years after planting (2011). Analyses were run using respectively “R” and Systat softwares.