Why Tourbières et lacs de la montagne jurassienne stands out
The site is best known for the exceptional density and diversity of its mountain peatlands and for the collection of glacial lakes that punctuate the Haut-Jura plateau. It represents roughly a third of all peatlands in the entire Franco-Swiss Jura Massif and two thirds of those in Franche-Comté, making it a conservation benchmark for this habitat type in France. It is equally recognized for its rare peatland-dependent wildlife, from bog-specialist dragonflies and butterflies to breeding populations of vulnerable birds such as the corncrake, ruff and snipe, and for the concentration of Natura 2000 areas and nature reserves that it brings together under a single Ramsar designation.
Tourbières et lacs de la montagne jurassienne history and protected-area timeline
The conservation history of the site begins with the early recognition of the Drugeon basin and the LIFE-funded project that restored about thirty kilometres of watercourses across twelve communes, a programme that paved the way for the 2003 Ramsar designation of the Bassin du Drugeon. This initial labelling established the area as a reference for mountain peatland conservation in France and provided a foundation on which the much larger 2021 site could be built.
From 2014 to 2021, a second LIFE programme, Tourbières du Jura, extended restoration work across more than sixty peatlands in the Doubs and the Jura, marking a renewed commitment to the rehabilitation of high-altitude bog habitats. Local actors began to envision a broader Ramsar designation following a 2017 seminar of the Ramsar France association at Labergement-Sainte-Marie, where forty communes expressed interest in joining the site.
The formal candidature was submitted to the French state in March 2020, and on 2 February 2021 the Tourbières et lacs de la montagne jurassienne were officially inscribed as Ramsar site no. 1266. The chosen date deliberately marked World Wetlands Day and the fiftieth anniversary of the Ramsar Convention, reinforcing the symbolic importance of the designation for French wetland conservation.
Tourbières et lacs de la montagne jurassienne landscape and geographic character
The landscape of the site reflects the cold, karstic character of the Jura Massif, where glacial action on porous limestone produced an unusually rich mosaic of wetlands. The site lies almost entirely above 800 metres elevation, and its terrain is shaped by deep combes, broad high plateaus, glacial moraines and natural lakes filling former glacial hollows. The peatlands occupy depressions and gentle slopes where waterlogging has accumulated over thousands of years, often bordered by spruce forests typical of the Jura highlands.
The lakes are an integral part of the scenery. Lac de Saint-Point, the largest natural lake in the Jura, anchors the centre of the site, while clusters of smaller lakes such as Ilay, Narlay, Petit and Grand Maclu, Bellefontaine and Mortes, Lamoura, l'Abbaye and the Rousses lake create a chain of clear-water basins across the plateau. These lakes, together with peatlands in the upper Doubs valley, the Drugeon basin, the Vallée de l'Orbe and the Combe de Chapelle-des-Bois, define the visual identity of this part of the Haut-Jura: a horizon of forests, raised bogs, open water and damp meadows under a typically mountain climate.
Tourbières et lacs de la montagne jurassienne ecosystems, habitats, and plant life
Ecologically, the site represents the most complete set of mountain peatland habitats in the French Jura and one of the most complete in France. Cold, acidic and nutrient-poor conditions in the peatlands support bog mosses, sedges, cottongrass and sphagnum communities, alongside boreal relicts such as dwarf birch, crowberry and a range of rare sedges and orchids. The lakes, fed by karstic springs, sustain clear, oxygen-rich waters that are favourable to sensitive aquatic species.
At a broader ecological level, the complex functions as a critical carbon store and a major reservoir for the regional water resource, while also providing habitat connectivity across the high Jura. Twenty-two wetland habitats of European interest are present, and many of the species recorded here have their main or even sole French population within the site.
Tourbières et lacs de la montagne jurassienne wildlife and species highlights
The fauna of the site is remarkable for its peatland-specialist character. Among breeding or regularly occurring birds, rare species such as the greater spotted eagle, common rosefinch, corncrake, snipe, Eurasian curlew, spotted crake and northern lapwing reflect the open, wet conditions that this habitat complex preserves at altitude. Invertebrates are equally distinctive: dragonflies such as the subarctic hawker, white-faced and large white-tailed darters, and butterflies including the bog fritillary, moorland clouded yellow, large heath, scarce copper and cranberry fritillary depend directly on bog vegetation.
Amphibians are well represented by the natterjack toad, northern crested newt and palmate newt, while reptiles include the adder. Aquatic fauna is also notable, with confirmed breeding of pike, lake trout, powan and the highly threatened white-clawed crayfish. White-clawed crayfish populations in particular underline the excellent water quality maintained across much of the site's lake and stream network.
Tourbières et lacs de la montagne jurassienne conservation status and protection priorities
The site is one of the most important French entries in the Ramsar Convention and acts as a cornerstone of wetland policy in the Bourgogne-Franche-Comté region. Its designation in 2021 extended a conservation framework that already covered the Bassin du Drugeon and brought twelve Natura 2000 sites and four nature reserves under a single ecological umbrella, ensuring coherent management of habitats that were previously treated in isolation.
Conservation value rests on climate regulation through carbon storage, on the protection of a major regional water resource fed by karstic aquifers, and on the safeguarding of relict bog and lake ecosystems that cannot easily be recreated once damaged. The success of two successive LIFE programmes, restoring tens of kilometres of watercourses and rehabilitating more than sixty peatlands, demonstrates an unusually sustained local commitment to active management rather than purely passive protection.
Tourbières et lacs de la montagne jurassienne cultural meaning and human context
The wetland complex is intertwined with the traditional countryside of the Haut-Jura, where peat cutting, small-scale agriculture and forestry have shaped the rural landscape for centuries. Former peat-extraction basins, such as those visible around Frasne, have been progressively integrated into conservation management and now serve as recognised biodiversity sites rather than abandoned industrial scars.
The region also carries a strong identity rooted in lake and mountain culture, with villages such as Les Rousses, Lamoura, Chapelle-des-Bois, Labergement-Sainte-Marie and Saint-Claude anchoring a long tradition of wetland-aware rural life. The Ramsar designation recognised this pre-existing local culture and the willingness of communes to engage collectively in protecting it.
Top sights and standout views in Tourbières et lacs de la montagne jurassienne
The site's most striking feature is its sheer concentration of high-altitude peatlands, which together represent about a third of the entire Franco-Swiss Jura Massif's bog resource. It is also unusual in linking major glacial lakes such as Lac de Saint-Point and Lac de Remoray with extensive bog systems in a single internationally protected perimeter, creating integrated lake-peatland landscapes of rare coherence.
Best time to visit Tourbières et lacs de la montagne jurassienne
Late spring and early summer are the most rewarding seasons for appreciating the site, when wetland vegetation is at its most visible, dragonflies and butterflies are active around the bogs, and many of the characteristic breeding birds can be heard in surrounding meadows and reedbeds. Late summer offers warmer lake conditions and rich displays of bog flora. Winter visits can be atmospheric, with snow-covered peatlands and frozen lakes, though many minor access roads may be limited by mountain weather.
