Table 1. Summary information of GBIF snake records.
| Continent | # Species | # Occurrences | Mean occurrences per species | SE | Area (million km2) | Occurrences per 100 km2 |
|---|---|---|---|---|---|---|
| Africa | 513 | 17,108 | 33.35 | 3.38 | 29.89 | 0.006 |
| Asia | 576 | 19,187 | 33.31 | 5.69 | 44.67 | 0.004 |
| Europe | 99 | 42,892 | 433.25 | 169.78 | 8.97 | 0.048 |
| North America | 680 | 157,923 | 232.24 | 33.62 | 24.64 | 0.064 |
| Oceania | 236 | 49,247 | 208.67 | 32.56 | 8.92 | 0.055 |
| South America | 633 | 16,029 | 25.32 | 2.21 | 17.91 | 0.009 |
Notes.
- # Species
- Number of species appearing in GBIF data, not the actual number of species known to exist across the continent
- # Occurrences
- Number of occurrence records in GBIF downloads
- Mean occurrences per species
- Total number of occurrences records in a continent divided by number of species in GBIF data
- SE
- Standard error associated with the mean occurrences per species
- Area
- Area in millions of km2 estimated using Albers equal area conic projection
- Occurrences per 100 km2
- Total number of occurrence records divided by the estimated continental area