New Zealand Threat Classification System
The New Zealand Threat Classification System is used by the Department of Conservation to assess conservation priorities of species in New Zealand.[1]
The system was developed because the IUCN Red List, a similar conservation status system, had some shortcomings for the unique requirements of conservation ranking in New Zealand. As of 2011[update]plants, animals, and fungi are evaluated, though the lattermost has yet to be published.[2]Algae were assessed in 2005 but not reassessed since.[2] Other protists have not been evaluated.[2]
Contents
1 Categories
2 Qualifiers
3 See also
4 References
5 External links
Categories
Species that are ranked are assigned categories:[3]
- Threatened
This category has three major divisions:
Nationally Critical - equivalent to the IUCN category of Critically endangered
Nationally Endangered - equivalent to the IUCN category of Endangered
Nationally Vulnerable - equivalent to the IUCN category of Vulnerable
- At Risk
This has four categories:
- Declining
- Recovering
- Relict
- Naturally Uncommon
- Other categories
- Introduced and Naturalised
These are any species that are deliberately or accidentally introduced into New Zealand.
- Migrant
Migrant species are those that visit New Zealand as part of their life cycle.
- Vagrant
Vagrants are taxa that are rare in New Zealand that have made their own way and do not breed successfully.
- Coloniser
These taxa have arrived in new Zealand without human help and reproduce successfully.
- Data Deficient
This category lists taxa for which insufficient information is available to make as assessment on conservation status.
- Extinct
Taxa for which there is no reasonable doubt that no individuals exist are ranked as extinct. For these lists only species that have become extinct since 1840 are listed.
- Not Threatened
If taxa fit into none of the other categories they are listed in the Not Threatened category.
Qualifiers
A series of qualifiers are used to give additional information on the threat classification:[1][3]
| 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 (e.g. a predator irruption) 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 1000 km2 |
| 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 |
See also
- Conservation in New Zealand
References
^ ab Molloy, Janice; Bell, B.; Clout, M.; de Lange, P.; Gibbs, G.; Given, D.; Norton, D.; Smith, N.; Stephens, T. (2002). "Classifying species according to threat of extinction. A system for New Zealand" (pdf). Department of Conservation (New Zealand). Retrieved 2008-02-29..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
^ abc Hitchmough, Rod (June 2013). Summary of changes to the conservation status of taxa in the 2008–11 New Zealand Threat Classification System listing cycle (PDF). Wellington, NZ: Publishing Team, Department of Conservation. ISBN 9780478149869. ISSN 2324-1713. Retrieved 2 February 2018.
^ ab Townsend, Andrew J.; de Lange, Peter J.; Duffy, Clinton A.J.; Miskelly, Colin M.; Molloy, Janice; Norton, David A. (January 2008). New Zealand Threat Classification System manual (PDF). Wellington, New Zealand: Science & Technical Publishing Department of Conservation. ISBN 9780478143645. Retrieved 2 February 2018.
External links
- New Zealand Threat Classification System website and database
- New Zealand Threat Classification System past conservation status lists and manuals
