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Ranking Definitions
 
Global Rank
GRank: Priority ranking (1 to 5) based on the number of occurrences throughout the entire range of the element.
G1 Very Rare: 1 to 5 occurrences or very few individuals or acres.
G2 Rare: 6 to 20 occurrences or few individuals or acres.
G3 Uncommon or Restricted: 21 to 100 occurrences, rather rare throughout a fairly wide range, or fairly common in a rather restricted range.
G4 Apparently Secure: more than 100 occurrences, though it could be quite rare in some parts of its range.
G5 Demonstrably Secure: more than 100 occurrences.
GH Historic: presumed extinct in the wild though the possibility remains that it could be rediscovered; and/or the element exists in captive populations.
GU Unrankable. Also used at the subspecies level as G#TU.
GX Extinct: little or no possibility of ever being rediscovered anywhere within its range.
G#C Captive or Cultivated: presently extant globally only in captivity or cultivation. (Used in conjunction with a GRank, i.e. GXC, GHC.)
NE National Exotic: exotic to the United States of America. (Used in conjunction with a G#.)
G#Q Taxonomic Question: taxonomic status is questionable; numeric rank may change with taxonomy.
G#T# Subspecies: numeric designations based on same criteria as those for global ranks.
G#? Uncertain: insufficient information to give a definitive ranking. Confidence of numeric rank is plus or minus one rank.
GNA Conservation status rank is not applicable to the element at the global level. Includes Hybrids (HYB), Invasives, species of "Domestic origin" or "Cultural" communities, and communities that have been "Modified/managed". These pseudo ranks and all other qualifiers or pseudo ranks are now indicated through the use of new fields in the Distribution Data grid and Distribution Comment field in the Tracker database.
GNR The rank is not yet assigned (NR-not ranked), and is applied when the state rank is SNR (former state rank S? = Srank not yet assessed).
 
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State Rank
SRank: priority ranking (1 to 5) based on the number of occurrences of an element within a State.
S1 Very Rare: 1 to 5 occurrences in the State or very few individuals or acres within the state.
S2 Rare: 6 to 20 occurrences in the State or few individuals or acres within the state.
S3 Uncommon or Restricted: 21 to 50 occurrences in the State, either rather rare throughout a fairly wide range, or fairly common in a rather restricted range within the State.
S3S4 Fairly Common: 51 to 100 occurrences and found over a rather wide range within the State.
S4 Apparently Secure: more than 100 occurrences within the State, though it could be quite rare in some parts of the State.
S5 Demonstrably Secure: more than 100 occurrences within the State.
S#B State Breeding: populations which breed and tend to be present in the state year round; generally used in conjunction with SN Rank when taxon has both migratory (non-breeding) and non-migratory (breeding) populations.
S#M State migratory transient conservation status: where the population of a species occurs regularly on migration at particular staging areas or concentration spots where the species might warrant conservastion attention.
S#N State Non-breeding: typically non-breeding or wintering in the State.
SH State Historic: historical occurrences in the state, perhaps having not been verified in the past 20 years, and suspected to be still extant.
SU State Unrankable: unrankable at the State level.
SX State Extirpated or Extinct: considered to no longer occur within Arizona.
SE State Exotic: may be native elsewhere in the United States, but is an established exotic within the State; numeric designations as for state rank.
SEH State Exotic Historic: exotic within the state and not verified within the past 20 years.
SER State Exotic Reported: reported from the State, but without persuasive evidence to either accept or reject the report; if it does occur in the State it is an established exotic.
SNA Conservation status rank is not applicable to the element at the state level. Includes former state ranks SA (State Accidental), SP (State Potential), SR (State Reported), SRD (State Reported but Doubtful), SRF (State Reported Falsely), SHYB (Hybrid). These pseudo ranks and all other qualifiers or pseudo ranks are now indicated through the use of new fields in the Distribution Data grid and Distribution Comment field in the Tracker database.
SNR The state rank is not yet assigned (NR-not ranked). This includes the former state rank S?.
 
Data Sensitive
DataSens: Yes/No. Indicates whether or not occurrence localities for this element are especially vulnerable to disturbance.
 
Track
Y Yes: data is being actively accumulated and entered into computerized and manual files.
W Watch: data is being passively accumulated and archived into manual files.
 
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