Lakes of Ounianga
Country
Chad
Inscribed in
2012
Criterion
(vii)
The conservation outlook for this site has been assessed as "good with some concerns" in the latest assessment cycle. Explore the Conservation Outlook Assessment for the site below. You have the option to access the summary, or the detailed assessment.
The site includes eighteen interconnected lakes in the hyper arid Ennedi region of the Sahara desert covering an area of 62,808 ha. It constitutes an exceptional natural landscape of great beauty with striking colours and shapes. The saline, hyper saline and freshwater lakes are supplied by groundwater and are found in two groups 40 km apart. Ounianga Kebir comprises four lakes, the largest of which, Yoan, covers an area of 358 ha and is 27 m deep. Its highly saline waters only sustain algae and some microorganisms. The second group, Ounianga Serir, comprises fourteen lakes separated by sand dunes. Floating reeds cover almost half the surface of these lakes reducing evaporation. At 436 ha, Lake Teli has the largest surface area but is less than 10 m deep. With their high quality freshwater, some of these lakes are home to aquatic fauna, particularly fish. © UNESCO
Summary
2025 Conservation Outlook
Finalised on
11 Oct 2025
Good with some concerns
Current state and trend of VALUES
Good
Overall THREATS
Overall PROTECTION and MANAGEMENT
Full assessment
Description of values
An exceptional example of permanent lakes in a desert setting
Criterion
(vii)
The site provides an exceptional example of permanent lakes in a desert setting, a remarkable natural phenomenon which results from an aquifer and associated complex hydrological system, which is still to be fully understood. Located in north-eastern Chad, in a hot and hyperarid desert setting with less than 2mm of average rainfall per year, the Ounianga area comprises a total of 18 lakes, displaying a variety of sizes, depths, water coloration and chemical composition. The hyper saline, brackish and freshwater lakes are supplied by fossil (not currently replenished) groundwater and are found in two groups 40 km apart. Ounianga Kebir comprises four lakes, the largest of which, Yoan, covers an area of 358 ha and is 27 m deep. Its hyper saline waters only sustain algae, other micro organisms and salt-tolerant insect larvae; larger aquatic fauna such as fish and toads are restricted to spring pools and narrow stretches along the shoreline where fresh groundwater flows into the lake. To the east, Ounianga Serir comprises fourteen lakes separated by sand dunes (World Heritage Committee, 2012), and is the largest known lake complex in a hyper arid environment (IUCN, 2012; Kröpelin, 2007a). From the lakes of Ounianga Kebir and Ounianga Serir, five relict fish species (Polypterus senegalus, Poropanchax normani, Hemichromis bimaculatus, S. g. borkuanus, and Coptodon zillii) have been more recently recorded (Trape, 2013; Trape, 2018), making this ecosystem a biodiversity hotspot in the desert (Trape, 2016).
Exceptional natural landscape of great beauty
Criterion
(vii)
The aesthetic beauty of the Ounianga area results from a landscape mosaic which includes the lakes with blue, green and /or reddish coloured waters depending on their chemical composition and algal community, surrounded by palms, dunes and spectacular sandstone landforms, all of it in the heart of a desert that stretches over thousands of kilometres. In addition, about one third of the surface of the freshwater lakes at Ounianga Serir is covered with floating reed carpets whose intense green colour contrasts with the adjacent blue open water. Rock exposures dominating the site offer a breath-taking view on all the lakes, of which the colours contrast with the sand dunes separated by bare rock structures (World Heritage Committee, 2012).
Historical evidence of the peoples of the Sahara
The site contains rare rock art that is considered essential for an understanding of the peoples of the Sahara. These reveal a resolutely water-based way of life. Harpoons and bone hooks, found in the Faya basin, Ounianga and other places support the hypothesis that fishing, and navigation played an important role for the populations having occupied Borkou during wet periods. Navigation and fishing, the origins of which possibly lie in the Sahelian provinces and the present-day Lake Chad region, probably appear at the turn of the 6th millennium BCE and have been widespread for millennia in the Faya basin and on the string of lakes located between Faya, the Ounianga lakes and southern Tibesti (Gauthier, 2022).
Assessment information
Natural processes such as the siltation of the two small eastern lakes of Ounianga Kebir and the encroachment of dunes on most of the other lakes persist in this hyper-arid environment. Over the years, actions have been taken to combat the encroachment of dunes, but have not been consistent. Silting remains the main threat to the proper functioning of the system, even if this phenomenon only seriously concerns Lake Yoan, one of the 18 lakes that make up the property. Efforts, as provided for in the current management plan (2021-2030), must be continued in a way that does not impact on the outstanding natural beauty of the site, recognized as part of its OUV.
Water-borne & other effluent Pollution
(Eutrophication of lake Yoan)
Inside site
, Extent of threat not known
The measures undertaken during the past years to prevent the eutrophication of Lake Yoan by the ban to use detergents at the shore appear to have clearly reduced the former hyper-abundance of floating algae; it still occurs, however, during rare longer windless periods (Kröpelin, 2013). However, in the participatory diagnosis of the management of the site carried out during the development of the current management plan (PAG 2021-2030), eutrophication was not identified as a key threat.
Earth & Sediment Management
(Silting up)
Inside site
, Extent of threat not known
Outside site
The situation of silting had been noted during a mission commissioned by the African World Heritage Fund in 2015 (Malan, 2015). Indeed, according to Malan (2015), the silting up of the lakes is no longer a risk but a very real threat. According to local residents, the sand dunes have always advanced from the northern regions towards Lake Yoan, however the speed of movement was then slowed down by the presence of trees in these parts. For about forty years, a drastic drop (or even absence) in rainfall in this region has caused the disappearance of the plants that held the sand. As a result, the dunes are advancing much faster than expected. Traditionally, to manage the advance of the dunes palisades of woven date palms were installed or trees planted such as tamarisks or date palms. After the property was inscribed, a project called "Fight against the silting of the oases and the improvement of the palm groves of Ennedi" with Swiss cooperation (Bureau de la coopération suisse au Tchad (2014)) allowed the planting of tamarisk hedges. The first phase of this project ended in 2014 and the objectives set were largely achieved. However, according to the Local Committee, while the planted tamarisk hedges have certainly slowed the advance of the dunes, the problem of silting of Lake Yoan persists. This deposit of sand in the lake causes the progressive closing of the "eyes" i.e. the fossil wells, sources of fresh water that feed the lake and serve the needs of the local residents. To combat this phenomenon, the Local Committee is creating dikes using used tires or drainage channels, emergency solutions that should however be the subject of studies. Furthermore, apart from a few local residents who voluntarily maintain the tamarisks, most of the members of the Local Committee do not feel responsible for monitoring the achievements of the tamarisk plantation project, due to lack of remuneration. The silting was reported in previous SOCs (2014 and 2015) and according to the new management plan for the property (CLGLO, 2021) continues. As Bouju and Regnaut (2021) noted, it is particularly urgent to establish the basic and reference ecological and socio-economic situation of the Ounianga lakes (depths and sand levels, etc.).
Water-borne & other effluent Pollution, Garbage & Solid Waste
(Pollution: solid and liquid waste)
Inside site
, Localised(<5%)
Outside site
The pressure exerted on the site by the Ounianga Kebir and Ounianga Serir populations is visible. The perceptible effects are the lack of waste collection and the dumping of dirty water, which harms the quality of the waters of the Yoan and Teli lakes, close to the two localities. The presence of soldiers in this area during past conflicts has also contributed to increasing waste (Malan, 2015). There are signs reminding visitors that it is forbidden to throw away garbage around the lake, but the site does not currently have bins that can collect this packaging (CLGLO, 2021). The environmental impact is limited but requires attention in short- and long-term management plans. Against liquid waste (mainly engine oil), the awareness-raising and monitoring of the Local Committee seems to be bearing fruit.
Increase in tourism remains one of the main potential threats, however, to date there are no indications that this is of concern. Additionally, T. domingensis which according to the current management plan is considered invasive, may be present in the property. However, no study is currently available to authenticate that the Typha present is indeed T. domingensis and that it has invasive dynamics.
Recreational Activities
(Increase in tourism)
Inside site
, Localised(<5%)
The only risk for any substantial increase in tourist numbers would be a real or perceived deterioration of the security situation in the region as a consequence of conflicts in other Saharan countries. This, however, would not imply any danger to the site itself (Kröpelin, 2013). To maintain the site’s integrity, in agreement with administrative and traditional authorities, it has been decided that any future touristic facility or hotel must blend in with the local architectural features such as height, colour, materials, shape of buildings, etc. Moreover, these facilities must meet eco-touristic and environmental principles and uses (IUCN Evaluation 2011). Restrictions on vehicle access to the lakes’ shores and camping have been implemented (State Party of Chad, 2015). However, the tourist season is limited (November to March) and several factors have significantly hampered the recovery efforts seen since 2012, including the global health crisis from COVID-19 and recently, the military-political crises.
Roads, Trails & Railroads
(Commercial traffic)
Outside site
Cross-border road traffic may have negative impacts on the site (UNESCO, 2015). Ounianga Yoan is located on one of the main roads to Libya, and border traffic seems to increase at times. If traffic increased significantly, it could lead to social or cultural changes in certain areas (IUCN Consultation, 2020). However, according to the participatory diagnosis of the property's management (CLGLO, 2021), the impact of this traffic on the environment has decreased considerably. In Ounianga Kebir, in fact, transit huts, equipped with toilets, have been built there. Passengers of trucks that generally arrive at Ounianga Kebir must stay in these huts. This strategy would also have made it possible to substantially reduce the pressure of visitors and passengers on Lake Yoan and its environment.
Invasive Non-Native/ Alien Species
(Presence of Typha, a potentially invasive hydrophyte)
Other invasive species names
Typha domingensis
Inside site
, Localised(<5%)
In the Borkou ponds, Bruneau de Miré and Quézel (1957) noted in the areas with completely dried soil on the surface during the summer, but where flooding is effective in the cold season, the presence of Typha elephantina which formed an association with Oxystelma esculentum, Typha australis, Imperata cylindrica, Cladium Mariscus, Oxystelma bornouense and Sporobolus robustus. These Typha were not reported at that time (1950s) as being very invasive. Furthermore, these authors did not mention the presence of T. domingensis which according to the current management plan (CLGLO, 2021) is considered invasive. However, no study is currently available to authenticate that the Typha present is indeed T. domingensis and that it has invasive dynamics. However, as climatic conditions are no longer the same as they were 60 years ago, it is important to monitor the development of Typha present in these already fragile environments.
Involvement of stakeholders and rightsholders, including indigenous peoples and local communities, in decision-making processes
The local populations in and around the property are organized into a Local Management Committee known as the "Local Committee" recognized by Decree No. 1077/PR/PM/MCJS/2010 classifying and protecting the Ounianga Lakes site as a natural site as of 15.12.2010. Its organization and operation are governed by Order No. 064/PR/PM/MC/SG/CNSIP/2011. However, since the property was inscribed and this Committee was formalized, various evaluation missions (Malan, 2015; APEF, 2021) have been unanimous regarding the ineffectiveness of this Local Committee, which was also noted by the participatory diagnosis of the 2021-2030 management plan. Some issues include the unstructured nature of the committee, lack of equipment, especially IT tools, lcak of regular meetings within the regulatory deadlines (every 3 months), lack of financial autonomy, lack of knowledge of their role and function, inability to document the implementation of activities, and gender inequality (CLGLO, 2021). However, since time immemorial, the local populations have maintained and protected the lakes against external aggressions (silting, solid and liquid waste, etc.). This traditional system has not been sufficiently documented to serve as a basis for the proposal of the property's management.
Legal framework
Decree n° 1077/PR/PM/MCJS/2010 of 15.12.2010 designated the Lakes of Ounianga as a “natural site”. The protected area system of Chad, as established in Law n°14/PR/2008, focuses on fauna and flora conservation and, alone, is not fully suited to Ounianga. Thus, responsibility for the property is vested in the Ministry of Culture. Under the decree, all activities that could threaten the integrity of the property, including mining, are forbidden. This decree is complemented by the Decree No. 630 which regulates the need to prepare Environmental Impact Assessments for development projects (World Heritage Committee, 2012). The operational implementation of the Management Plan is entrusted to the Local Committee which was created in September 2011 by decree No. 064/PR/PM/MC/SG/CNSIP/2011. It is supported in its activities by the National Interministerial and Multidisciplinary Scientific Committee (CNSIP). However, the application of these laws is not effective on the ground, due in part to reasons mentioned above.
Governance arrangements
Governance arrangements and decision-making processes are not transparent and not appropriately communicated. Responsibilities for implementation are clear, including a readily accessible process to identify, hear and resolve complaints, disputes, or grievances, but not effectively implemented. Four structures are involved in the implementation of activities for the property : i) The Technical Committee; ii) The National Interministerial and Multidisciplinary Scientific Committee, iii) The Site Managers; iv) Local Organization and Execution Committee (Local Committee). Despite the existence of validated texts and management plans, the participatory diagnosis of the current management plan (CLGLO, 2021), notes a lack of communication between the actors based in the capital (Technical Committee, Scientific Committee, Manager) and the Local Committee based onsite, more than 1200 km from the capital. This configuration is the basis for the non-implementation of the activities planned in the management plans.
Integration into local, regional and national planning systems (including sea/landscape connectivity)
The Ounianga Lakes belong to the national network of Protected Areas and Fragile Ecosystems of Chad. It is much more an operational or political network than a biological network. Indeed, the programme is managed by the Ministry of the Environment and Fisheries while the property is managed by the Ministry in charge of culture.
Boundaries
The boundaries of the 62,808 ha site have been designed to ensure its integrity. The site includes the area situated below the 450m contour line within the immediate lake watershed. The 4,869 ha buffer zone includes the village of Ounianga Kebir beside Lake Yoan. Zoning for management of the site takes into account pressures which are now mainly concentrated on Lake Yoan. Ounianga Serir, the smallest village (population of c. 1,000 in 2012) is next to Lake Teli, inside the property (World Heritage Committee, 2012). The property is large enough to ensure visual integrity. The boundaries offer an appropriate degree of protection for the natural functions.
Overlapping international designations
No overlap with other international designations.
Implementation of World Heritage Committee decisions and recommendations
The Committee's last decision concerning the property dates back to 2015 (39 COM 7B.3, Bonn 2025), where it welcomed the progress achieved by the State Party in a number of areas, including participation of local communities in the management of the site, as well as its efforts aimed at addressing the threats to the property (World Heritage Committee, 2015). Since then, no decision has been taken concerning the property.
Climate action
The 2021-2030 management plan for the Ounianga Lakes aims for its socio-economic development, its cultural diversity in a pleasant and ideal living environment for all. Six programmes, broken down into projects, correspond to the chosen orientations. No programme or project includes specific provisions to protect the OUV from the negative impacts of climate change. Moreover, the management plan claims that climate change has had no perceptible influence on the integrity of the property. Therefore, there is no system in place to measure and monitor the effects of climate change on the OUV of the site, as it’s clear that climate change is not a priority issue of the property’s management.
Management plan and overall management system
The site has a current management plan (Plan 3). It succeeds the previous one that ran from 2014 to 2023 (Plan 2), which itself replaced the first one (Plan 1) developed during the nomination (2011 to 2016). Some of the activities related to the objectives of Plan 1 had begun to be implemented. However, before the end of this plan and without an evaluation of said plan, Plan 2 (2014-2023) was developed with broadly the same objectives as Plan 1. Plan 3 (2021-2030), to date, has certainly evaluated Plan 2, but was developed before the end of that (set for 2023). The evaluation of Plan 2 shows that of the 28 planned activities, only 2 have been carried out, i.e. a completion rate of 7.14%. This figure is a good indicator of the non-implementation of the site's management plans since its inscription. In theory, the current management plan clearly identifies values, management objectives, desired management outcomes, and key threats. However, no evidence is seen that this plan is actively used to guide management. Four structures are fundamentally involved in the implementation of the activities of the management plan: i) the Technical Committee; ii) the National Interministerial and Multidisciplinary Scientific Committee; iii) the site managers appointed by the Cultural Heritage Directorate and iv) the Local Management Committee. The management plan clarifies the role of each structure and its responsibilities. However, the participatory diagnosis (CLGLO, 2021) notes that of the 4 structures, in reality only the Local Committee is operational. Yet, it is not structured and is unable to provide reports on the implementation of its actions. According to an evaluation report of the "Support for the concerted management of Protected Areas and Fragile Ecosystems of Chad" program, (Coordination nationale APEF, 2021), the members of the Local Committee continue to complain with the same arguments as those noted by Malan (2015) a few years ago. Indeed, according to them, after the inscription of the property in 2012, a lump sum was paid by the Ministry in charge of culture to each member, but unfortunately, since 2014, the State has suspended these lump sums. Therefore, local communities do not benefit from the World Heritage site nomination. The official manager is based in the capital, without material resources. The effective implementation of the management plan requires a mandated manager on the ground and currently Committee members' complaints continue.
Law enforcement
A certain improvement has been achieved in the field of enforcement, particularly with regards to regulations around solid waste and restrictions on vehicles access to the lakes (State Party of Chad, 2015). The role of each structure is clarified by a legal text (decree or ministerial order).
Sustainable finance
To implement the action plan, an annual budget has been prepared and its funding has been guaranteed by Order of the Prime Minister, Head of Government (Order N°2893/PR/PM/MC/2011 dated 6 September 2011). The overall cost of the revised 2021-2030 Management Plan (CLGLO, 2021) for the Ounianga Lakes Site amounts to €1,231,200. The State Party will have to mobilize its own funds amounting to €369,360 as part of the co-financing of the projects, i.e. nearly 30% of the overall cost of the Plan. The additional financing is €861,840. However, thanks to international partners (donors and NGOs), the Ounianga area benefits from relatively significant funding which is however much more focused on the sustainability of traditional oasis exploitation systems, rather than on the conservation of the site's values (Bouju and Regnaut, 2021). Overall, the sustainability of the financing of the management plan is not guaranteed.
Staff capacity, training and development
The site has only two government officials: the manager and his deputy based 1,250 km from the site. The manager resigned, and his deputy who replaced him is the current director of the Chadian National Museum (CLGLO, 2021). The site is a natural property whose management is placed under the supervision of the Ministry in charge of Culture, specifically the Director of Cultural Heritage, while the other protected areas and fragile ecosystems in Chad are managed by the Ministry in charge of the Environment. Day-to-day management is the responsibility of the Local Committee, which has been raising issues regarding insufficient funding since 2014. A mission financed by the African World Heritage Fund, at the request of the Chadian government (Malan, 2015) noted the lack of information and capacity building of both the members of the Local Committee and the manager at the time on the mechanisms of the World Heritage Convention. Furthermore, the manager and members of the Local Committee complain about the lack of basic equipment for working (computer equipment, cars, etc.). These issue continue to persist.
Education and interpretation programmes
There have been some awareness activities organized in schools and for visitors (including the importance of protecting the lake waters), however education activities need to be continued and increased (IUCN, 2011). A number of awareness raising activities have been ongoing (State Party of Chad, 2016). In the new management plan, awareness, education and communication is a strategic axis which proposes, among other things, to implement IEC strategies, to design and implement training and awareness manuals, etc.
Tourism and visitation management
The site is one of Chad's well-known tourist products. It is indeed one of the destinations of the Chadian Tourism Office (OTT), but there is very little or no collaboration between the managers of the property and this organization. Tourism promotion is a priority program of the new management plan (CLGLO, 2021) and there are initiatives on the ground led by the Local Committee to organize tourism. However, there is no formal plan or any tourism strategy validated for the site. Furthermore, local guides are not sufficiently trained (CLGLO, 2021). Since the Covid-19 pandemic and the recent political-military crisis in Chad, tourism has been somewhat down in this region. Moreover, the surge of visitors supposedly expected after the property was inscribed as World Heritage has really not taken place, much to the disappointment of the members of the Local Committee (Malan, 2015).
Sustainable use
The local communities’ use of natural resources, in particular of the date palms and the groundwater, is as sustainable as it has been for centuries in this traditional “date culture”. The impact of the very limited fishing is difficult to assess. In the current management plan, sustainable use is taken into account through program No. 5 (Increase and improvement of production by ensuring the sustainable management of natural resources) composed of three projects. For the moment these are only projects and therefore difficult to evaluate.
Monitoring
Regular monitoring of the lakes’ hydrology is being undertaken by a hydrologist from the Ministry of Water (State Party of Chad, 2016), but these are one-off surveys carried out as part of Master's studies (Cf. Raimond et al., 2019). Several programmes and studies have noted the crucial nature of hydrological monitoring of the lakes (Travi, 2021; Van der Meeren et al., 2019), yet the current management plan (CLGLO, 2021) does not include any provision for scientific monitoring of this parameter as well as other biodiversity elements, which contribute to the maintenance of the site.
Research
Several international research institutes have been conducting research in the area. The lakes represent an archive for environmental and climate history (Kröpelin, 2007a,b; 2009; Kröpelin et al., 2016; Sylvestre et al., 2017; Dinies et al., 2019; Van Meeren et al., 2019); among others, they are of high interest to paleolimnology (Creutz et al., 2016), modern and early Holocene mollusc fauna (Van Bocxlaer et al., 2011). From the lakes Boukou and Djara (two of the seven Ounianga Serir lakes) tropical relict fish species (Hemichromis fasciatus and Epiplatys bifasciatus) have been more recently recorded (Trape, 2016; 2018). Important studies have been conducted on lake diatoms (Rirongarti et al., 2023). The results of this research are available and allow for long-term monitoring. However, the current management plan does not include any provisions concerning scientific research (priority needs, funding, mechanisms for valorising results, etc.) or the consideration of research results in management actions.
Effectiveness of management system and governance in addressing threats outside the site
The property has an up-to-date management plan (2021-2030) and the legal texts that underpin its existence are available. The buffer zone surrounding the two groups of lakes (Ounianga Kebir and Ounianga Serir) is very large (4,869 hectares). It protects the property from certain human actions that are harmful to the property, such as uncontrolled construction.
Effectiveness of management system and governance in addressing threats inside the site
The property has an up-to-date management plan (2021-2030) and the legal texts that underpin its existence are available. However, the planned actions are not effectively implemented due to lack of funding and, above all, a dysfunction in the decision-making chain. As proof, the evaluation of the last plan showed that it was only implemented at less than 8% (CLGLO, 2021). The problems underlying this poor performance persist.
The regulatory texts that establish the existence of the site have been adopted. They sufficiently explain the responsibility of each management structure. The property has an up-to-date management plan (2021-2030), however implementation of actions is very low. Since 2014, the property has not had real sustainable funding for activities, which justifies a poor performance in the implementation of the previous management plan (2014 - 2023). Furthermore, there is a dysfunction in the site's decision-making chain. Indeed, three out of four management structures are based far from the site and are not operational. Only the Local Committee claims to be operational, however various issues regarding its structure, funding, irregular meetings, lack of progress reporting and a lack of understanding of the Committee's role and function, are reported. Finally, the property, which is a natural site, is managed by the Ministry in charge of culture (focal institution of the World Heritage Convention in Chad) which does not have sufficient qualified human resources for this type of site nor sufficient financial resources available.
An exceptional example of permanent lakes in a desert setting
Low Concern
Trend
Stable
The hydrological system of the Ounianga lakes is functioning and the water level is stable apart from slight seasonal variation, thanks to a groundwater supply which compensates evaporation losses (IUCN, 2012). These values of the site remain in good condition (IUCN Consultation, 2017), however the siltation of the two small eastern lakes of Ounianga Kebir and the encroachment of dunes on most of the other lakes persist.
Exceptional natural landscape of great beauty
Good
Trend
Stable
The beauty and aesthetic values of the property have been well conserved. Although a good number of people live around lakes Yoan and Teli, local initiatives are assuring the compatibility between human activities and conservation of the site’s values (World Heritage Committee, 2012). A number of actions have been undertaken to address issues such as waste management and therefore the situation has been improving (State Party of Chad, 2015). These values remain intact.
Assessment of the current state and trend of World Heritage values
Stable
No evidence of any deterioration of the values of the site can be stated. To date the site is in a well preserved state. There have also been various improvements in site management, education, monitoring, tourist facilities, sanitation, waste disposal and therefore the situation has even been improving. However, the funding deficit and the dysfunction in the management decision chain are all threats which could alter the management of the property. Furthermore, the siltation of the two small eastern lakes of Ounianga Kebir and the encroachment of dunes on most of the other lakes persist.
Assessment of the current state and trend of other important values
Data Deficient
Data Deficient
N/A
Additional information
Importance for research
Knowledge – The site is an important area for research with a number of international experts conducting research activities. The lakes represent an archive for environmental and climate history (Dinies et al., 2019; Kröpelin, 2009, 2007a+b; Kröpelin et al., 2016; Sylvestre et al., 2017); among others, they are of high interest to paleolimnology (Creutz et al., 2016). Two relict fish species have been reported from the lakes Boukou and Djara of Ounianga Serir (Trape, 2018).
History and tradition,
Cultural identity and sense of belonging
The site is a center of Saharan oasis economies, particularly of date culture and trade, and therefore allows valuable insights into history and everyday life of desert-dwelling groups. It is also the center of the Ounia group, former speakers of a language that is probably extinct today (cf. Tubiana, 1997).
Traditional agriculture
The site probably houses - as in other areas where traditional date cultivation is practiced - a large number of date cultivars and thus a valuable archive of various genotypes.
Outdoor recreation and tourism
The small lake Yi Madu, located close to Ounianga Yoan, is used as a healing bath by inhabitants of the region.
The site has numerous benefits, including knowledge production (especially in the fields of biodiversity, climatology and palaeosciences), and its potential for local economies through tourism, health and recreation (healing baths at Yi Madu). Its importance in the field of traditional agriculture (a great variety of local dates cultivars) should also be emphasized, as well as the fact that it is a center of cultural and spiritual values.
References
| № | References |
|---|---|
| 1 |
Bouju S. and Regnaut S. (2021). Évaluation à mi-parcours du Programme "d’Appui à la gestion concertée des Aires Protégées et Ecosystème Fragiles du Tchad (APEF), Contrat No 2019/413134 UE, Rapport final, 76 p.
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| 2 |
Bruneau de Miré P. and Quézel P. (1957). La végétation des points d'eau permanents de la portion orientale du Sahara méridional. In: Journal d'agriculture tropicale et de botanique appliquée, 4(12) : 632-644.
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| 3 |
Bureau de la coopération suisse au Tchad. (2014). Programme de lutte contre l’ensablement des oasis de l’Ennedi et l’amélioration des palmeraies. Rapport de fin de phase opérationnel (RFO), 8 p.
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| 4 |
CLGLO (2021). Plan de gestion du site des Lacs d’Ounianga 2021 – 2030. Comité Local de Gestion des Lacs d’Ounianga (CLGLO). SOS Sahel, APIL, APIDEL, UE. 90 p.
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| 5 |
Coordination nationale APEF. (2021). Rapport de la mission de suivi des activités du 29 novembre au 11 décembre 2021. Rapport des missions dans le Borkou, l’Ennedi ouest et est. APEF, 10 p.
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| 6 |
Creutz, M., Van Bocxlaer, B., Abderamane, M., & Verschuren, D. (2016). Recent environmental history of the desert oasis lakes at Ounianga Serir, Chad. Journal of Paleolimnology, 55(2), 167-183.
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| 7 |
Dinies, M., Hoelzmann, P., Karls, J., Melles, M., Wennrich, V. Claussen, M., Neef, R., Kröpelin, S. (2019). Continental records for the ‘African Humid Period’: lake sediment archives from the Ounianga Basin and the Tibesti Mountains, N Chad. 20th Congress of the International Union for Quaternary Research (INQUA). [online] Available at: https://app.oxfordabstracts.com/events/574/program-app/subm… [Accessed 1 December 2020].
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| 8 |
Gauthier, Y. (2022). Monuments, paintings and lakes: areal study in central Sahara and in Borkou during the Holocene. Bulletin d’Archéologie Marocaine, 27, 215-249.
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| 9 |
IUCN (2012). IUCN Technical Evaluation of the Lakes of Ounianga, Chad. IUCN. Available at: https://whc.unesco.org/en/list/1400/documents/
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| 10 |
IUCN (2012). World Heritage Nomination – IUCN Technical Evaluation, Lakes of Ounianga (Chad). In: IUCN World Heritage Evaluations 2012, IUCN Evaluations of nominations of natural and mixed properties to the World Heritage List. [online] Gland, Switzerland: IUCN. Available at: https://whc.unesco.org/en/list/1400/documents/ [Accessed 1 December 2020].
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| 11 |
Kröpelin, S. (2007a). The Saharan lakes of Ounianga Serir – a unique hydrogeological system. In: Bubenzer, O., A. Bolten & F. Darius (eds.), Atlas of Cultural and Environmental Change in Arid Africa. Africa Praehistorica, 21, 54-55.
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| 12 |
Kröpelin, S. (2007b). High-resolution climate archives in the Sahara (Ounianga, Chad). In: Bubenzer, O., A. Bolten & F. Darius (eds.), Atlas of Cultural and Environmental Change in Arid Africa. Africa Praehistorica, 21, 56-57.
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| 13 |
Kröpelin, S. (2009). Lakes in the Sahara. German Research Magazine of the Deutsche Forschungsgemeinschaft. 4-9. Available at: https://www.sfb806.uni-koeln.de/images/idoblog/upload/108/2…
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| 14 |
Kröpelin, S. (2013). Report from a research visit to the site in 2013. Personal comms.
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