In the studied areas, leaf litter seemed to accumulate by the end of the dry season and then showed a sharp decrease in December. The onset of the rainy season (October and November) may have increased litterfall by washing litter down the threes. In this sequence, reduced litterfall may have resulted from the renewal of trees with production of new leaves. Although this is not the case in the collectors used to sample litterfall, leaf litter is likely to be carried to lower sites by the high volume of rain registered in December. Higher humidity during the rainy season may also have contributed to leaf litter decomposition, increasing invertebrate abundance and decreasing leaf litter accumulation. Sin et al. (2008) showed introduced Eleutherodactylus coqui (that consumes large amounts of leaf litter invertebrates) to increase decomposition rates in Hawaii because frog excrements and carcasses accelerated nutrient cycling.