In brief

The IUCN Red List of Ecosystems measures the relative risks of ecosystem collapse for terrestrial, freshwater and marine ecosystems at subnational, national, regional and global scales.

Information provided 

The tool provides the information below for every ecosystem assessed:

• Ecosystem description with information on unique biodiversity  ("native biota"), non-living characteristics, such as geology ("abiotic environment"), key processes, spatial distribution, and the relation with the IUCN Global Ecosystem Typology

• Ecosystem diagnosis, based on a model describing the functioning of ecosystems, how major threats affect ecosystem sustainability and how risks were assessed

• Ecosystem status which is assigned depending on the risks identified within each criterion and the overall risk of ecosystem collapse, summarised by the IUCN risk category.

• Assessment data, which includes spatial data, time series data, metadata used to assess the criteria for each ecosystem type

The IUCN risk categories

Users and benefits

Main users

Assessments are usually carried out by:

• Local and national governments
• Conservation practitioners
• Academic institutions

Assessments can be useful for a variety of other stakeholders too, such as land use planners and advocates, policymakers, donor agencies and programme developers as well as businesses, companies and investors.

Main applications

The Red List of Ecosystems has many applications, including to assess and highlight risks to ecosystems, guide national and international conservation strategies, prioritise and monitor restoration action, inform land use planning, inform laws and regulations, provide recommendations on how to manage industries, raise public awareness or report on multilateral agreements.

 Learn more about RLE application ​

The RLE partnership

The Red List of Ecosystems is delivered by partners. Founding partners include: The University of New South Wales, Deakin University, Arizona State University, Provita, Wildlife Conservation Society, Coastal Oceans Research and Development, Conservation International (Colombia), and IUCN.

IUCN’s involvement

Two IUCN bodies have supported the partnership since the inception of the Red List of Ecosystems in 2008 and the launch of the platform in 2014: the Commission on Ecosystem Management (CEM) and the Global Ecosystem Management Programme, now part of  IUCN's science and data Centre.

Online courses

The RLE partnership benefits from a vibrant learning community and proposes courses for beginners and advanced users: 

• Introduction course - The Global Standard for Assessing Risks to Ecosystems
  Proposed by Deakin University, one of RLE partners.
  This course takes between 4-6 hours and provides an overview of the tool and the criteria and provides an introduction on the application of RLE.
   
• Advanced course - The Red List of Ecosystems for Assessors - Specialized course 
  Proposed by the IUCN Academy. 
  This course takes about 12 hours to complete, and provides in-depth understanding of the RLE methodology, the thresholds, and the calculation methods.