Each country's status is an aggregation of its Ramsar wetlands' condition trends — the share of sites whose satellite-derived indicators are significantly improving versus declining over recent decades. Explore the map or the table; select a country to see its sites.
| Country | Sites | Improving | Declining | Stable | Not enough evidence | Net trend |
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For every Ramsar site, each state indicator with at least 8 years of data is tested for a monotonic trend with the non-parametric Mann-Kendall test (Kendall's τ). Climate drivers (rainfall, runoff, drought, temperature) are context and never vote — otherwise a wetland drained during a wet decade scores as improving. Each τ is direction-adjusted, weighted by its statistical confidence (1 − p) so noisy trends shrink toward zero, and then averaged by concept so that five ways of measuring surface water count as “water” once. A site is improving or declining by the sign of that score. Where nothing is significant we separate two different statements: with a record long enough to have detected a strong trend, no trend means stable; without one, we report not enough evidence instead of calling it stable. A country's net trend = (improving − declining) ÷ assessed sites (improving + declining + stable) — sites we cannot resolve are excluded from the denominator rather than being counted as if they were stable. Recently-listed sites without geolocation are omitted from the map.