Table 3. The area (km2) in future ‘high allergy risk’ (HAR) areas of common ragweed (Ambrosia artemisiifolia), perennial ragweed (A. psilostachya) and giant ragweed (A. trifida) in Europe under current and future climate (year 2100) conditions assuming RCP 6.0 and RCP 8.5 climate change scenarios (IPCC, 2014).
| Species | Highest habitat suitability (km2) | ||
|---|---|---|---|
| Current | RCP 6.0 | RCP 8.5 | |
| Common ragweed | 89,460 | 178,960 | 129,320 |
| Perennial ragweed | 41,660 | 52,760 | 78,650 |
| Giant ragweed | 38,220 | 75,290 | 26,530 |