Nearly four hectares of land are dedicated to increase the biodiversity potential of the Melrand forest and will therefore not be exploited. These areas consist of oak and chestnut
embankments that we are preserving and to which we plan to introduce honey plants in the gaps. Some old trees are being kept as they are, along with tree stumps that harbor rich biodiversity, including numerous anthills.
In this sub-plot, several lepidopterans (butterflies and moths) have been recorded (cinnabor moth, marbled white, common red soldier beetle, ochlodes venata, etc) and the diversity of plants is also interesting: marsh pennywort, holly, ivy, gorse, fern, common pear tree, honeysuckle, beech etc.
There is also a waterlogged area and a wet meadow on either side of a stream. The waterlogged area seems to correspond to a swampy alder and willow grove, which is a fairly rare habitat, populated by alders and willows, azure damselflies, lepidopterans, greater tussock-sedge, wild angelica, marsh thistle, floating river water-crowfoot, etc.