File:Renoncule ranunculus sp Les Baillons à Enquin-sur-Baillon début aout 2017a 12.jpg

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Français : Renoncules (ranunculus sp.) en fleur dans 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.
Les principales autres plantes aquatiques de cet herbier sont en 2017 le Faux Cresson de fontaine (Apium nodiflorum aussi dénommé Ache nodiflore), la Véronique aquatique (Veronica anagallis-aquatica), le Callitriche, le Potamot pectiné, localement le Rubanier dressé (Sparganium erectum), une glycérie (Glyceria plicata) et près des berges le cresson de fontaine (aussi dit « officinal » (Nasturtium officinale). En 2017 en été l'eau était cristalline ; même en période très pluvieuse ... avec très 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) - la flore amphibie était vraiment remarquable pour la région.
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current19:50, 19 August 2017Thumbnail for version as of 19:50, 19 August 20175,435 × 1,777 (746 KB)Lamiot (talk | contribs)User created page with UploadWizard

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