Eastern sand darter (Ammocrypta pellucida) recovery strategy: chapter 8
Appendix A:Definition of status rankings
G-Rank (global): Rank assigned to an element based on its range-wide conservation status rank (G1 to G5, in decreasing order of priority). Elements ranked G1, G2 or G3 are considered imperilled. G-rank is assigned by NatureServe or the conservation data centre responsible for the element in question.
N-Rank (national): Rank assigned to an element based on its national conservation status rank (N1 to N5, in decreasing order of priority). Elements ranked N1, N2 or N3 are considered imperilled.
S-Rank (subnational): Rank assigned to element based on its provincial or state conservation status rank (S1 to S5, in decreasing order of priority. Elements ranked S1, S2 or S3 are considered imperilled.
| Priority ranking value | Priority ranking definition |
| 1 | Severely at risk in the province |
| 2 | At risk in the province |
| 3 | Rare or uncommon in the province |
| 4 | Widely spread, abundant and apparently out of danger in the province, but there are reasons for concern in the long term |
| 5 | Widely spread, abundant and established stability in the province |