Ratio of Threatened Species in the Red List

內容簡述

透過紅皮書名錄的成果讓我們更清楚瞭解國家內生物受到威脅的狀態、程度、原因及變化趨勢

橫軸標籤

類群

縱軸標籤

受威脅物種比例(%)

橫軸標籤2

類群

縱軸標籤2

比率(%)

指標圖表樣式

stack

Indicator Details

Themes

Population of selected taxa

PSBR model type

Pressure (P)

Corresponding targets

SDGs

15.5 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

Aichi Biodiversity 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.

Biodiversity Action Plan

D31031 Develop and implement action plans for the endangered species research and conservation strategies (includes distribution, habitats, status, trends, monitoring, and threat factors). Key performance indicator of the action plan:

  • The number of strategic action plans on endangered species research and conservation

  • The complete ratio of strategic action plans on endangered species research and conservation (%)

Background

The red list is a list of assessments of the degree of threat to wild animals and plants. Many countries have developed their own species threat assessment methods or systems, but the most well-known and widely used of these is the Red List system developed by the International Union for Conservation of Nature (IUCN). The IUCN Red List is compiled according to strict guidelines to assess the extinction risk of thousands of species and subspecies. The guidelines are based on species and regions and aim to reflect the urgency of conservation work to the public and decision-makers and to help the international community avoid species extinction. Through the Red List, we will understand more clearly the status of threats faced by the organisms in the country, the extent, causes, and trends.

Definition and Calculation

The Endemic Species Research Institute and Forestry Bureau, Council of Agriculture assess the vulnerability of native species of birds, terrestrial reptiles, amphibians, freshwater fishes, terrestrial mammals, and vascular plants to publish national Red List based on IUCN assessment standards. Until 2018, six Red Lists were published. The number of threatened species in the Red List is to count the numbers of critical endangered (CR), endangered (EN), and vulnerable (VU) species.

The data and temporal range

Percentage of threatened species in the Red List of each taxon (2016, 2017)

Trends

The Red List of terrestrial mammals will be updated every five years, and currently it includes five taxa (birds, terrestrial reptiles, amphibians, freshwater fishes, and terrestrial mammals). The percentages of threatened species in amphibians and freshwater fishes are higher than other taxa, with 30% of species are endangered. The Red List of vascular plants is planned to be updated every ten years. It includes four taxa currently (lycophytes, monilophytes, gymnosperms, and angiosperms), and the percentages of threatened species in gymnosperms is as high as 52%.

Data Management Authorities

Endemic Species Research Institute, Council of Agriculture

References

Data Development Status

II-1

Data Providers

Endemic Species Research Institute, Council of Agriculture

Investigation Year

2016-2017

Id

VI.121502