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Proportion of known species assessed through the IUCN Red List

Key indicator facts

Indicator type

Response

Applicable for national use

Yes (find out more)

Indicator classification

Operational and included in the CBD's list of indicators

Indicator type

Response

Applicable for national use

Yes (find out more)

Indicator classification

Operational and included in the CBD's list of indicators

Last update

2017

Coverage

Global

Availability

Freely available

Partners

Logo iucn

IUCN Red List Partnership

Contact point

E-mail: redlist@iucn.org

Key resources

Indicator description

The indicator measures the proportion of known species for which extinction risk has been assessed through the IUCN Red List of Threatened Species. The IUCN Red List itself has a >50 year history, with its underlying methodology robustly published in the scientific literature (Mace et al. 2008 Conserv. Biol.; IUCN 2012 https://portals.iucn.org/library/node/10315). The indicator of “proportion of known species assessed through the IUCN Red List” has been tracked for many years through the summary statistics updated several times annually on the IUCN Red List website (http://www.iucnredlist.org/about/summary-statistics) (Lacher & Hilton-Taylor, 2017).

Related Aichi Targets

Primary target

19

Target 19:

By 2020, knowledge, the science base and technologies relating to biodiversity, its values, functioning, status and trends, and the consequences of its loss, are improved, widely shared and transferred, and applied.

Secondary targets

Target 12:

By 2020 the extinction of known threatened species has been prevented and their conservation status, particularly of those most in decline, has been improved and sustained.

Primary target

19

Target 19:

By 2020, knowledge, the science base and technologies relating to biodiversity, its values, functioning, status and trends, and the consequences of its loss, are improved, widely shared and transferred, and applied.

12
19

Related SDGs

E sdg goals icons individual rgb 15

GOAL 15 - Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss.

Target 15.5| Relevant indicator

Take urgent and significant action to reduce the degradation of natural habitats, halt the loss of biodiversity and, by 2020, protect and prevent the extinction of threatened species.

E sdg goals icons individual rgb 15

GOAL 15 - Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss.

E sdg goals icons individual rgb 15

Other related MEAs and processes

Indicator icon

IPBES Regional Assessment Chapters

Chapter 3| Official indicator

Status, trends and future dynamics of biodiversity and ecosystems underpinning nature’s benefits to people

Indicator icon

IPBES Regional Assessment Chapters

Indicator icon

Themes

Bip species

Partners

Logo iucn

Key indicator facts

Indicator type

Response

Applicable for national use

Yes (find out more)

Indicator classification

Operational and included in the CBD's list of indicators

Indicator type

Response

Applicable for national use

Yes (find out more)

Indicator classification

Operational and included in the CBD's list of indicators

Last update

2017

Coverage

Global

Availability

Freely available

Indicator description

The indicator measures the proportion of known species for which extinction risk has been assessed through the IUCN Red List of Threatened Species. The IUCN Red List itself has a >50 year history, with its underlying methodology robustly published in the scientific literature (Mace et al. 2008 Conserv. Biol.; IUCN 2012 https://portals.iucn.org/library/node/10315). The indicator of “proportion of known species assessed through the IUCN Red List” has been tracked for many years through the summary statistics updated several times annually on the IUCN Red List website (http://www.iucnredlist.org/about/summary-statistics) (Lacher & Hilton-Taylor, 2017).

Contact point

E-mail: redlist@iucn.org

Graphs / Diagrams

Figure 1: Proportion of known species assessed through the IUCN Red List


Current storyline

The indicator is quite dynamic, given both ongoing expansion of the IUCN Red List at about 5,000 assessments annually towards the “Barometer of Life” (Stuart et al. 2010 Science), and given ongoing new species discovery and description. The ongoing expansion of the IUCN Red List adds about 1/250% of the world’s known species to the IUCN Red List each year. Ongoing new species discovery and description means that the denominator needs to be backcast at the time of each new assessment. Figure 1 below shows the indicator for 2000-2017.


Data and methodology

Data for the numerator are based on the IUCN Red List. Data for the denominator are based on standard taxonomic sources, all documented at http://www.iucnredlist.org/technical-documents/information-sources-and-quality#standards; these are backcast each year such that the denominator for the current year is also used for all previous years.

National use of indicator

Disaggregation to national levels requires dedicated effort to derive checklists of total species occurrence in the country in question, but is straightforward to calculate once these are in hand. For sub-global disaggregations, alignment between taxonomy used in national/regional checklist and that used in the IUCN Red List will introduce some error, but this will be minor compared to the uncertainty relative to as-yet-undescribed species (especially for invertebrates and fungi).

Further resources

Key indicator facts

Indicator type

Response

Applicable for national use

Yes (find out more)

Indicator classification

Operational and included in the CBD's list of indicators

Indicator type

Response

Applicable for national use

Yes (find out more)

Indicator classification

Operational and included in the CBD's list of indicators

Last update

2017

Coverage

Global

Availability

Freely available

Partners

Logo iucn

IUCN Red List Partnership

Contact point

E-mail: redlist@iucn.org

Key resources