Primary productivity (GPP, NPP)

Layer 3 — Biologyin the Ecosystem Ecology subtree

GPP: gross photosynthetic C fixation. NPP = GPP − autotrophic respiration. NPP ~55 PgC/yr terrestrial + ~50 PgC/yr ocean. Basis of all heterotrophic life.

Related concepts

Photosynthesis (C3)
Phosphorus cycle
Ecosystem services
Water cycle (biological component)

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