State of the Environment

2006

Indicator: BD-02 Conservation status of nationally significant species and ecological communities, compared with previous years

Data

Total number of listed extinct (EX), critically endangered (CE), endangered (EN), vulnerable (VU) and conservation dependent (CD) species in 2004, 2001 and 1993
  EX CE EN VU CD
  2004 2001 1993 2004 2004 2001 1993 2004 2001 1993 2004
Ecological Communities - - 3 28 27 - 1 - -
Frogs 4 4 - 15 15 7 12 12 2
Birds 23 23 20 5 37 33 26 64 61 25
Mammals 27 27 21 2 34 29 28 52 45 18 1
Fish 1 - - 2 16 13 7 20 17 6
Reptiles - - 1 11 11 6 38 38 15
Invertebrates - - 4 5 - - 6 4 -
Plants 61 63 74 57 509 518 226 676 655 661
Total species 116 117 115 71 627 619 300 868 832 727 1

Source: The Department of the Environment and Heritage 2005, Threatened species and ecological communities, viewed 21 Jul 2005, http://www.deh.gov.au/biodiversity/threatened/index.html.

Change in the number of listed threatened flora and fauna species, 1993, 2001, 2005

Change in the number of listed threatened flora and fauna species, 1993, 2001, 2005

Source: The Department of the Environment and Heritage 2005, Threatened species and ecological communities, viewed 21 Jul 2005, http://www.deh.gov.au/biodiversity/threatened/index.html.

What the data mean

There has been a slight increase in the number of species listed under Australian government legislation as either vulnerable, endangered or critically endangered for all groups. Plants and birds are the most threatened groups.

Data Limitations

The indicator reports only species that have been listed as threatened and reflects the state of knowledge rather than the state of species.

The Environment Protection and Biodiversity Conservation Act 1999 lists species or ecological communities of national importance whereas State and Territory lists may not be the same as the national lists.

Issues for which this is an indicator and why

Biodiversity - Species, habitats and ecological communities - Species diversity 

The number of species that are threatened or endangered is a surrogate indicator for decline in species richness more generally.

Other indicators for this issue:

Biodiversity - Species, habitats and ecological communities - Conservation status of species and ecological communities 

While changes in the conservation status of species and ecological communities tells us more about changes in the state of our knowledge, and community concerns than it does about the condition of species more broadly, it does provide some insight which particular species that are believe to be threatened, and allows us to focus on trends in those species as a surrogate indicator for trends in the condition of biodiversity more broadly. It should also be noted that conservation status may also change without any underlying change in the number or distribution of individuals or in the processes affecting them. This occurs when new observations result in a reassessment of area of occupancy, extent of occurrence, population size, threat status, trends in population size or other factors contributing to assessment of conservation status.

The number and conservation status of species provides information for management and research needs and options. Lack of knowledge of biological and ecological requirements of species and communities is an impediment to sustainable management. Identification of species is a prerequisite to an understanding of their requirements.

Other indicators for this issue:

Biodiversity - Species, habitats and ecological communities - Condition of marine biodiversity: Condition of species, habitat and ecological communities 

Conservation status of species may be broadly indicative of changes in the condition of marine biodiversity.

Other indicators for this issue:

Biodiversity - Species, habitats and ecological communities - Government action on species and ecological communities 

The Australian government Environment Protection and Biodiversity Conservation Act 1999 provides for identification and listing of threatened species and threatened ecological communities. By tracking the overall status of species and ecological communities over time this provides an indication of how successful the range of management and conservation measures in place to conserve biodiversity have been.

Other indicators for this issue:

Biodiversity - Species, habitats and ecological communities - Community action on species and ecological communities 

The community as well as governments are able to participate in conservation of species and ecological communities. By tracking the overall status of species and ecological communities over time this provides an indication of how successful the range of measures have been.

Other indicators for this issue:

Land - Land condition - Condition of terrestrial species and ecological communities 

Changes to the landscape and native habitat as a result of human activity has put many of Australia’s unique species at risk. Although conservation status does not provide a measure of condition of species or ecological communities, it could, with other parameters, be used to indicate condition.

Other indicators for this issue:

Coasts and Oceans - Condition of the ocean and coastal waters - Condition of species, habitats and ecosystems 

Pressures on the coasts and oceans as a result of human activity has put many of Australia’s unique species at risk. Although conservation status does not provide a measure of condition of species or ecological communities, it could, with other parameters, be used to indicate condition.

Other indicators for this issue:

Natural and Cultural Heritage - Knowledge of heritage - Listing processes, number and distribution of identified heritage items (places and objects) 

Species and ecological communities form part of our natural heritage. Listing of threatened species is a measure that can also be seen as a measure for protecting natural heritage.

Other indicators for this issue:

Australian Antarctic Territory - Environment - Marine ecosystems 

Pressures on the oceans as a result of human activity have put many Australian and Antarctic marine species at risk. Although conservation status does not provide a measure of condition of species or ecological communities, it could, with other parameters, be used to indicate condition.

Other indicators for this issue:

Further Information

Biodiversity hotspots

Changes to this document since December 2006

The date heading in the table has been changed from 2005 to 2004. The date had been incorrectly transcribed.

Key

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