Effects of P addition on the ratio of PME and PDE activities (PME:PDE ratio) in (a) primary forest, (b) secondary forest and (c) planted forest.

Taiki Mori et al. found that long-term #Phosphorus (P) addition in #TropicalForest soil did not alter the PME( #Phosphomonoesterase ):PDE( #Phosphodiesterase ) ratio in primary and secondary forests, whereas P fertilization elevated the PME:PDE ratio in planted forest.
doi.org/10.1093/jpe/...