File:Gorges du Ciron, Avril 2016 recépaie dense rivulaire.JPG
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Français : "Gorges du Ciron" en aval du pont de la Trave à Préchac (Gironde, France). Ici l'eau a une couleur thé, due à des acides humiques apportés par le bassin versant après une période pluvieuse. Elle peut être plus opaque ou plus limpide selon la saison et les évènement météorologiques des jours ou semaines précédents. Le fond est rocheaux et caillouteux, avec des zones de dépot de sable. En aval de ce point plusieurs km du cours d'eau sont continuellement presque totalement sous une canopée, sous une forêt galerie, et parfois dans une gorge. Ces conditions maintiennent une eau plus froide, et un milieu et microclimat nettement plus frais que le climat moyen de la région. En fin d'hiver, quelques arbres sont en travers de la rivière suite aux derniers coups de vent et aux crues, mais vont être partiellement coupés pour permettre le passage de canoés tout en conservant des embâcles naturels indispensables au bon état écologique du cours d'eau.
English: "Gorges (small canyon) of the Ciron" downstream from the "bridge of the Trave" in Préchac (Gironde, France). Here the water has a tea color, due to humic acids provided by the watershed after a rainy period. It can be opaque or clearer depending on season and weather events of the previous days or weeks. The bottom of the river is stony, or frequently covered of sandy deposits. Downstream from this point several kilometers of the river are constantly almost completely under a canopy, in a gallery forest, and sometimes in a small canyon. These conditions maintain cooler water, and environment and microclimate significantly cooler than average weather in the region. In late winter, some trees across the river following the recent gales and floods, but will be partially cut to allow the passage canoes while preserving natural jams essential for GES (Good ecological status) of the stream. |
| Date | |
| Source | Own work |
| Author | Lamiot |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 13:09, 24 April 2016 | | 6,000 × 4,000 (3.54 MB) | Lamiot (talk | contribs) | User created page with UploadWizard |
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