Landscape Homogenization Drives Grassland Collapse: Study Confirms Diversity Buffers Drought But Policy Ignores Structural Drivers
Original framing: “Q&A: Grasslands in more diverse landscapes can suffer less from drought” — Phys.org
The study's 'landscape diversity' metric (Shannon index of land cover types) reduces indigenous territorial management to a spatial statistic. Maasai 'ololili' (dry-season grazing reserves) and Spanish 'trashumancia' (transhumance corridors) create functional diversity through mobile pastoralism — a practice criminalized by EU fencing subsidies. The research cites no indigenous co-authors, no traditional ecological knowledge databases, and treats diversity as an emergent property of land cover rather than a product of cultural governance. This epistemic extraction mirrors colonial science: measuring what indigenous stewardship produces while erasing the stewards.
The Bonn study correctly identifies landscape diversity as a drought buffer but frames it as a discovery rather than a recovery of knowledge erased by the very policy architecture — EU CAP per-hectare payments, global commodity chains, land privatization — that the research institution is embedded within.
The 'Q&A' format performs scientific neutrality while obscuring that the study's funders (German Excellence Strategy, EU Horizon) and its subjects (subsidized German farmers) are co-constituted by a system that pays for homogenization and funds research to measure its consequences. Indigenous pastoralists from the Sahel to the Steppe to the Dehesa have maintained the diversity the study measures through governance systems (mobility, commoning, fire) that the paper's 'landscape diversity index' renders invisible. The trickster reveals the joke: we are paying scientists to prove what we pay farmers to destroy. Systemic solutions require not more evidence but redirecting the €40B/year CAP flow from hectare-based homogenization to heterogeneity-based stewardship, with pastoralist communities as co-governors — not stakeholders — of the landscapes they have sustained for millennia.