In the context of applying the RothC model to predict soil organic carbon turnover in Mediterranean ecosystems, what specific decomposition rates are recommended or have been empirically validated? Considering the unique climatic and ecological characteristics of the Mediterranean area, which include a typically hot, dry summer and mild, wet winter, how do these conditions influence the selection of decomposition rates within the model? Additionally, are there any recent studies or adaptations of the RothC model that have focused on Mediterranean environments, and what insights do they offer regarding the model's parameters and performance in these regions?