Marais de Sénance

The Sénance marsh is part of the Znieff du vallon de Senance, which encompasses one of the major and most typical natural sites on the Langres plateau. This steep valley cuts deep into the Langres plateau, is bordered by steep cliffs and ends in a series of narrow gorges.

For nature lovers :
The edge of the plateau and the slopes are home to mountain forests, similar to those in the Jura, which vary depending on their orientation: maple groves (on large boulders), dental beech groves, xerophilous beech groves, oak groves and plateau oak groves, etc. A network of springs, streams and marshes occupies the bottom of the valley; meadows can be found downstream. Lastly, a particular type of vegetation develops on the hard limestone walls.

Vegetation:
More than fifteen plant species, rare and endangered in the Hte-Marne region, can be found in this sector, mainly of mountain or southern origin depending on the exposure, including the Dentaire pennée, the Cynoglosse des montagnes, the Orme scabre, the Scolopendre, the Actée en épi, the Arabette des sables, the Buis, the Lunaire vivace, etc. The latter is protected in Champagne Ardenne. The latter is protected in the Champagne Ardenne region, with only three localities in Haute-Marne.
Mountain Cynoglossus or German Cynoglossus, as its name suggests, is a species found in the mountains of Central Europe. It is found in dry, nitrate-rich areas of limestone soil, such as the edges of burrows, game resting places and rock shelters. The hooks on its fruit allow it to be spread by mammals.

An interesting fauna:
The fauna is remarkably rich, including various reptiles and amphibians. The avifauna is characterised in particular by numerous passerines (various warblers, Pipits and Warblers), various woodpeckers and birds of prey. The site is frequented by many mammals (fox, dormouse, marten, deer, roe deer, etc.). The entomofauna is varied, particularly in terms of butterflies (Little Sylvain, Tristan, Spanish Tobacco, Tircis, Geographical Map, etc.).

The Pine Marten is found in both deciduous and coniferous forests. This species is in decline throughout Europe. Mainly nocturnal, it lives in tree holes, rock crevices or abandoned squirrel nests.