Natural Capital

More than half of global GDP depends on nature. The annual public and private investment in protecting that nature is measured in tens of billions. The ratio between what the economy extracts from biodiversity-supplied services and what it invests in their maintenance defines the Ecosystem Dependency Ratio — and the number reveals that the global economy runs a biodiversity subsidy at a leverage ratio that would make any corporate finance officer blanch.

Audits the Kunming-Montreal 30×30 framework, TEEB offsets, and debt-for-nature swaps against the financing gap, demonstrating that the governance architecture exists but investment remains orders of magnitude below what closing the Ecosystem Dependency Ratio would require.

Quantifies the pharmaceutical economy's dependence on wild species compounds — the hidden health-sector dimension of the Ecosystem Dependency Ratio that no healthcare cost accounting currently reflects.

Applies the Ecosystem Dependency Ratio to documented species loss rates, showing that the IPBES-tracked decline of 1 million species is occurring while biodiversity investment remains orders of magnitude below the dependency it is supposed to finance.

Traces the contested Costanza ecosystem service valuation and establishes the Ecosystem Dependency Ratio showing that the global economy extracts 340–1,300× more value from nature than it invests in its protection.