Much more than a report, the IUCN World Heritage Outlook consists of individual Conservation Outlook Assessments prepared for each natural World Heritage site, available online at https://worldheritageoutlook.iucn.org. The Conservation Outlook Assessments provide a projection of whether a site is likely to maintain its World Heritage values and associated key attributes over time based on the assessment of:
- 1The current state and trend of values conveyed by their key attributes
- 2The threats affecting those attributes
- 3The effectiveness of protection and management
Based on the assessment of these key elements, the overall conservation outlook for a particular site is assessed against four rating categories. Where there is insufficient data to draw a conclusion, a site may be categorised as “data deficient”. The Conservation Outlook Assessments also compile additional information on the specific benefits that each site provides, and on active projects in and around the site; however, these data do not influence the rating.
You can access each assessment by exploring the interactive map or through the filtered search. Below you will find a guide to understanding the rating categories used in the Conservation Outlook Assessments of natural World Heritage sites.
Rating categories for Conservation Outlook Assessments
Each Conservation Outlook Assessment has an overall rating. There are five rating categories, as defined below.
| Rating | Definition |
|---|---|
| Good | The site's values, conveyed by their key attributes, are in good condition and are likely to be maintained for the foreseeable future, provided that current conservation measures are maintained. |
| Good with some concerns | While some concerns exist, with minor additional conservation measures the site’s values, conveyed by their key attributes, are likely to be essentially maintained over the long-term. |
| Significant concern | The site’s values, conveyed by their key attributes, are threatened and/or showing signs of deterioration. Significant additional conservation measures are needed to maintain and/or restore attributes over the medium to long-term. |
| Critical | The site’s values, conveyed by their key attributes, are severely threatened and/or deteriorating. Immediate large-scale additional conservation measures are needed to maintain and/or restore the key attributes over the short to medium-term or the heritage values may be lost. |
| Data deficient | Available evidence is insufficient to draw a conclusion. |
Rating categories values, threats and protection
To assess the overall outlook of a site, three elements are first examined and classified into rating categories.
1 Current state and trend of VALUES
World Heritage sites are unique because they possess Outstanding Universal Value (OUV). When they are first inscribed on the World Heritage List, their OUV is considered intact.
Find out more about natural criteria for Outstanding Universal Value
| Rating | Definition |
|---|---|
| Good | All attributes necessary to maintain the site’s values are essentially intact, and their overall condition is stable or improving. Available evidence indicates only minor, if any, disturbance to the values of the site. |
| Low Concern | Some loss or alteration of the attributes necessary to maintain the site’s values has occurred, but their overall condition is stable or improving and is not causing persistent or substantial effects on the values of the site. |
| High Concern | Loss or alteration of many attributes necessary to maintain the site’s values has occurred, which is leading to a significant reduction in the values of the site. |
| Critical | Loss or alteration of a majority of attributes necessary to maintain site values has occurred and has caused a major loss of the values of the site. |
2 THREATS
Like any natural area, World Heritage sites can be exposed to threats, both from within and outside their boundaries. These can be natural threats, such as environmental disasters, or man-made threats, such as infrastructure projects or hunting and trapping.
| Rating | Definition |
|---|---|
| Very Low Threat | Few or no threats are evident and accepted predictions indicate that negative impacts on the key attributes and therefore the site’s values and integrity, are likely to be minor. |
| Low Threat | Some minor threats are evident and there is concern that based on accepted predictions there are likely to be some localised but reversible negative impacts on the key attributes and therefore the site’s values and integrity. |
| High Threat | There are clear threats to the site, and current and/or predicted future impacts are likely to result in significant negative effects on the key attributes, and therefore the site’s values and integrity. |
| Very High Threat | The threats to the site are very high, and current and/or predicted future impacts are likely to result in the irreversible loss of the majority of the key attributes and therefore the site’s values and its integrity. |
| Data Deficient | Available evidence is insufficient to draw a conclusion. |
3 PROTECTION and MANAGEMENT
On-the-ground conservation of World Heritage sites must be backed by effective protection and management systems that meet the particular needs of each site.
| Rating | Definition |
|---|---|
| Highly Effective | The protection and management system under implementation is effective and able to conserve key attributes, thereby maintaining the site’s values and integrity. Aspects of site management can be regarded as being good practice. |
| Mostly Effective | The protection and management system under implementation is adequate and is likely to essentially conserve key attributes, thereby maintaining the site’s values and integrity over the medium-term. However, it may be insufficient to conserve key attributes and maintain the site’s values and integrity over the long-term. |
| Some Concern | The protection and management system is not fully addressing the threats to the site’s attributes and thereby values, resulting in a number of conservation issues. However, these issues could be reversed and effectively addressed in the short-term if management capacity and/or protection are improved. |
| Serious Concern | The protection and management system shows major deficiencies and is unable to conserve key attributes and maintain the site’s values and integrity over the short or long-term. Major interventions are required to enhance management capacity and/or protection. |
| Data Deficient | Available evidence is insufficient to draw a conclusion. |
Additional information on benefits and projects
As well as providing a global overview of the state of conservation of natural World Heritage sites, Conservation Outlook Assessments present an opportunity to collect additional information.
Some assessments contain information on ecosystem services (and their possible benefits) within sites, with more detailed descriptions and an evaluation of the most relevant benefits and how they may be affected by threats. This information is useful when considering how sites can help support healthy ecosystems, which in turn provide life-supporting benefits to people, and may also help maintain World Heritage and other important biodiversity values over time.
Some assessments also contain information on active conservation projects, where this information is available. To date, there has been no systematic attempt to collect such data, and the IUCN World Heritage Outlook assembles this information for the first time.