Deep-time climate and oxygen crises reveal systemic links between volcanic CO2 spikes, ocean anoxia, and modern carbon emissions
Original framing: “Researchers link the mass extinction of once-dominant marine groups to intolerable heat, diminished oxygen in oceans” — Phys.org
High‑resolution isotopic records, coupled with climate‑earth system models, confirm that rapid temperature rise (>5 °C) and oxygen depletion (<2 ml L⁻¹) were co‑occurring drivers of marine mortality. Recent advances in geochemical proxies allow reconstruction of ocean redox states with unprecedented precision, linking volcanic CO₂ spikes to biogeochemical destabilization. Scientific rigor thus validates the multi‑factorial nature of the extinction.
The Permian–Triassic extinction demonstrates how massive carbon releases can cascade through climate, ocean chemistry, and biosphere, a pattern echoed in today's fossil‑fuel driven warming.
Indigenous stewardship, historical analogues, and cross‑cultural wisdom reveal that relational governance and early warning systems are essential to break the feedback loops that lead to oceanic anoxia. Scientific advances in isotopic and modeling techniques provide the evidence base, while artistic‑spiritual narratives and trickster insights expose the paradoxes of unchecked progress. By integrating marginalized voices, re‑structuring economic incentives, and investing in deep‑time research, a coherent, systemic response can avert a modern analogue of the Great Dying.