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Extractive activity also generates the release of an element essential to all life, fresh water.<\/p>\n
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In a quarry, it’s\u00a0 the presence of water of exceptional purity associated with the regular excavation of the rock which is at the origin of the formation of a rare environment, the pioneer ponds.<\/p>\n These ponds can dry up during the summer. This feature eliminates many predators and allows the reproduction of pioneer species like the natterjack toad\u00a0 or the midwife toad.<\/p>\n <\/p>\n Various water supplies (groundwater, flows and precipitations) are used for the creation of pioneer ponds in different places of the quarry. The depressions are excavated using a mechanical shovel and are modeled to meet the criteria. If the substrate is not waterproof, it is possible to waterproof it with a layer of clay. Finally, to avoid the passage of vehicles in the ponds, rocks were installed to protect the ponds.<\/p>\n Naturally, these ponds are recolonized by too abundant vegetation and predators. They then lose their interest for the pioneer species. Dynamic management is therefore necessary to maintain their pioneering nature.<\/p>\n <\/p>\n For more information :\u00a0<\/strong><\/p>\n https:\/\/www.youtube.com\/watch?v=j4AU_nYVd1E&t=5s&ab_channel=LIFEinQuarries<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/h3>\n
Creation of pioneer ponds <\/strong><\/h3>\n
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