Figure 1. Conceptual diagram outlining the interactions between ecosystems traits, environmental conditions, management, net primary production (NPP), heterotrophic respiration (Rh), potential net ecosystem production (NEPPOT) and apparent NEP (NEPAPP).
It describes NEPAPP as the product of NEPPOT (= NPP – Rh) and functions of seasonal and short-term environmental f(e) and management f(m) constraints. Dotted lines in f) indicate NEPAPP = NEPPOT.