File:Paysage subaquatique Subaquatic landscape rivière "Les Baillons" à Enquin-sur-Baillons F Lamiot 05.jpg

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Français : Paysage subaquatique de la rivière "Les Baillons" à Enquin-sur-Baillons, dans le Bassin de la Canche, dans le département du Pas-de-Calais (France), ici en aout 2017. Sur cette section, le fond principalement constitué de silex bruns est colonisé par de grands herbiers principalement composé (en 2017) de Callitriche, de Faux Cresson de fontaine (Apium nodiflorum aussi dénommé Ache nodiflore), de la Véronique aquatique (Veronica anagallis-aquatica), le Potamot pectiné, localement un Rubanier (Sparganium erectum), une glycérie (Glyceria plicata) et sur berge le cresson de fontaine (aussi dit « officinal » (Nasturtium officinale). En 2017 en été l'eau était cristalline ; même en période très pluvieuse ... avec peu de périphyton sur les plantes et peu d'indices d'eutrophisation (algues filamenteuses localement). Durant mon passage je n'y ai pas vu d'oiseaux ni amphibiens ou couleuvres et très très peu de poissons (quelques truites, pas d'épinoches, mais les poissons peuvent se cacher facilement dans ces herbiers), mais la flore était vraiment remarquable pour la région. Photo subaquatique donnant une idée de ce que "voient les poissons" (imaginer de plus ces plantes ondulant dans le courant, ici assez vif). Photos prises à partir de la berge (pour ne pas perturber le milieu).
English: Underwater landscape of "freshwater seagrass" well preserved (here: mainly Callitriche sp.) in the river "The Baillons" in Enquin-sur-Baillons in the basin of the Canche in the department of Pas-de -Calais (France), here in August 2017.
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Author Lamiot
Camera location50° 34′ 14.64″ N, 1° 50′ 18.73″ E  Heading=317.93° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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current16:54, 19 August 2017Thumbnail for version as of 16:54, 19 August 20174,608 × 3,456 (3.82 MB)Lamiot (talk | contribs)User created page with UploadWizard

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