TheNew Zealand Threat Classification System is used by theDepartment of Conservation to assess conservation priorities of species inNew Zealand.[1]
The system was developed because theIUCN Red List, a similarconservation status system, had some shortcomings for the unique requirements of conservation ranking in New Zealand. As of 2011,[update]plants,animals, andfungi are evaluated, though the lattermost has yet to be published.[2]Algae were assessed in 2005 but not reassessed since.[2] Otherprotists have not been evaluated.[2]
Species that are ranked are assigned categories:[3]
A series of qualifiers are used to give additional information on the threat classification:[1][3]
| Qualifier | Definition | |
|---|---|---|
| CD | Conservation Dependent | Likely to move to a higher threat category if current management ceases |
| DP | Data Poor | Confidence in the listing is low due to the poor data available for assessment |
| De | Designated | The criteria does not completely apply to the taxa |
| EW | Extinct in the Wild | Exists only in cultivation or in captivity |
| EF | Extreme Fluctuations | Extreme unnatural population fluctuations, or natural fluctuations overlaying human-induced declines, that increase the threat of extinction |
| Inc | Increasing | Population thought to increase 10% over 3 generations or 10 years |
| IE | Island Endemic | Endemic only to a single archipelago and not the main islands |
| OL | One Location | Found at one location (geographically or ecologically distinct area) in which a single event (such as a predatorirruption) could soon affect all individuals of the taxon |
| PD | Partial Decline | Taxa has one or more secure populations but otherwise is declining |
| RR | Range Restricted | taxa confined to less than 1,000 km2 (390 sq mi) |
| RF | Recruitment Failure | Current population may appear stable but the age structure is such that catastrophic declines are likely in the future |
| SO | Secure Overseas | Secure in other parts of its natural range outside New Zealand |
| Sp | Sparse | Taxa in small, scattered populations |
| ST | Stable | Total population stable |
| TO | Threatened Overseas | Threatened in those parts of its natural range outside New Zealand |
| Discipline | Nature conservation |
|---|---|
| Language | English |
| Publication details | |
| History | 2008–present |
| Publisher | |
| Yes | |
| License | CC-BY |
| Standard abbreviations ISO 4 (alt) · Bluebook (alt) NLM (alt) · MathSciNet (alt  ) | |
| ISO 4 | N. Z. Threat Classif. Syst. |
| Indexing CODEN (alt · alt2) · JSTOR (alt) · LCCN (alt) MIAR · NLM (alt) · Scopus · W&L | |
| ISSN | 2324-1713 |
| Links | |
New Zealand Threat Classification Series is a scientificmonograph series providing the NZTCS status of members of a group of species, written by an independent panel of experts. There are currently 23 groups, each assessed once approximately every 5 years.[4]