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Species Rank Explanations

GLOBAL AND STATE RANKS

Florida Natural Areas Inventory (FNAI) defines an element as any rare or exemplary component of the natural environment, such as a species, natural community, bird rookery, spring, sinkhole, cave, or other ecological feature.  FNAI assigns two ranks to each element found in Florida: the global rank, which is based on an element's worldwide status, and the state rank, which is based on the status of the element within Florida.  Element ranks are based on many factors, including estimated number of occurrences, estimated abundance (for species and populations) or area (for natural communities), estimated number of adequately protected occurrences, range, threats, and ecological fragility.

 

GLOBAL RANK DEFINITIONS

G1

Critically imperiled globally because of extreme rarity (5 or fewer occurrences or less than 1000 individuals) or because of extreme vulnerability to extinction due to some natural or human factor.

G2

Imperiled globally because of rarity (6 to 20 occurrences or less than 3000 individuals) or because of vulnerability to extinction due to some natural or human factor.

G3

Either very rare and local throughout its range (21-100 occurrences or less than 10,000 individuals), or found locally in a restricted range, or vulnerable to extinction from other factors.

G4

Apparently secure globally (may be rare in parts of range).

G5

Demonstrably secure globally.

GH

Occurred historically throughout its range, but has not been observed for many years.

GX

Believed to be extinct throughout range.

GXC

Extirpated from the wild but still known from captivity or cultivation.

G#?

Rank uncertain (e.g., G2?).

G#G#

Range of rank; insufficient data to assign specific global rank (e.g., G2G3)

G#T#

Rank of a taxonomic subgroup such as a subspecies or variety; the G portion of the rank refers to the entire species, and the T portion refers to the subgroup; T#  has same definition as G#.

G#Q

Ranked as species but there is some question as to whether it is a valid species.

G#T#Q

Same as above, but validity as subspecies or variety is questioned.

GU

Global rank unknown; due to lack of information, no rank or range can be assigned.

G?

Temporarily not ranked.

 

 

STATE RANK DEFINITIONS

State ranks (S#) follow the same system and have the same definitions as global ranks, except they apply only to
Florida, with the following additions:

SA

Accidental in Florida and not part of the established biota.

SE

Exotic species established in Florida (may be native elsewhere in North America).

SX

Believed to be extirpated from state.



FEDERAL AND STATE LEGAL STATUSES

Provided by FNAI for information only. For official definitions and lists of protected species, consult the relevant state or federal agency.

FEDERAL LEGAL STATUS 

Definitions derived from U.S. Endangered Species Act of 1973, Sec. 3. Note that the federal status given by FNAI refers only to Florida populations and that federal status may differ elsewhere.

LE

Endangered: species in danger of extinction throughout all or a significant portion of its range.

LT

Threatened: species likely to become Endangered within the foreseeable future throughout all or a significant portion of its range.

E(S/A)

Endangered due to similarity of appearance to a species which is federally listed such that enforcement personnel have difficulty in attempting to differentiate between the listed and unlisted species.

T(S/A)

Threatened due to similarity of appearance (see above). 

PE

Proposed for listing as Endangered species. 

PT

Proposed for listing as Threatened species.

C

Candidate species for which federal listing agencies have sufficient information on biological vulnerability and threats to support proposing to list the species as Endangered or Threatened.

XN

Non-essential experimental population.

MC

Not currently listed, but of management concern to USFWS.

N

Not currently listed, nor currently being considered for listing as Endangered or Threatened.

 

 

FLORIDA LEGAL STATUSES

Animals: Definitions derived from “Florida’s Endangered Species and Species of Special Concern, Official Lists” published by Florida Fish and Wildlife Conservation Commission, 1 August 1997, and subsequent updates.

LE

Endangered: species, subspecies, or isolated population so few or depleted in number or so restricted in range that it is in imminent danger of extinction.

LT

Threatened: species, subspecies, or isolated population facing a very high risk of extinction in the future.

LS

Species of Special Concern is a species, subspecies, or isolated population which is facing a moderate risk of extinction in the future.

PE

Proposed for listing as Endangered.

PT

Proposed for listing as Threatened.

PS

Proposed for listing as Species of Special Concern.

N

Not currently listed, nor currently being considered for listing.

 

Plants: Definitions derived from Sections 581.011 and 581.185(2), Florida Statutes, and the Preservation of Native Flora of Florida Act, 5B-40.001. FNAI does not track all state-regulated plant species; for a complete list of state-regulated plant species, call Florida Division of Plant Industry, 352-372-3505.

LE

Endangered: species of plants native to Florida that are in imminent danger of extinction within the state, the survival of which is unlikely if the causes of a decline in the number of plants continue; includes all species determined to be endangered or threatened pursuant to the U.S. Endangered Species Act.

LT

Threatened: species native to the state that are in rapid decline in the number of plants within the state, but which have not so decreased in number as to cause them to be Endangered.

PE

Proposed for listing as Endangered.

PT

Proposed for listing as Threatened. 

N

Not currently listed, nor currently being considered for listing.

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