Environmental Structure and Planetary Semiosis: From the Great Oxidation Event to the Anthropocene

Life alters the environment, yet environmental structure simultaneously constrains the emergence, persistence, and planetary expression of life. This paper proposes a conceptual framework in which major Earth‑system transitions are interpreted through the spatial and temporal organization of environmental constraints. A distinction is introduced between Emergence and Dominant Control. Emergence refers to the local appearance of new metabolic, ecological, or semiotic processes, whereas Dominant Control refers to the stage at which such processes become sufficiently integrated and temporally persistent to alter planetary baseline conditions. Because the active functions of life presuppose an internal reference to environmental structure, the transition from emergence to dominance depends on recursive coupling between referential and active processes. Three minimal symbolic relations are introduced to express buffering dominance, spatial integration, and dominant control. The Great Oxidation Event is interpreted as a delayed transition in which oxygenic photosynthesis remained locally persistent long before atmospheric oxygen became globally integrated. The Anthropocene is interpreted as a transition in which symbolic and semiotic processes become globally integrated components of Earth‑system dynamics. Consciousness is framed as a reflexive semiotic function, operating as a dynamic referential locus from which environmental structure becomes internally modeled and modified. Semiosis thus emerges not outside environmental structure, but from recursive coupling between life, environment, and reflexive feedback. Because referential processes require directional weighting, emotion and affect are interpreted as the dynamic gradients through which environmental structure is selectively amplified or suppressed. These affective gradients constitute the preconditions for reflexive semiosis, providing the energetic and structural basis from which consciousness emerges as a self-referential mode of environmental modeling.