File:Flore subaquatique d'une mare citerne en vallée de l'Esteron fin avril 2018 a 02.jpg
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Français : Flore subaquatique (encore entièrement immergée) d'une sorte de citerne-mare à l’eau très claire et aux parois de pierre maçonnée ; en vallée de l'Esteron, Alpes maritimes, dans le sud de la France
Ce milieu est colonisé par 2 plantes (a priori semi-aquatiques) qui en font un bel équivalent d'aquarium de plusieurs mètres-cubes de volume (sans poissons visibles ce jour là ni amphibiens, mais avec quelques énormes larves de tipules sur le fond). Les plantes visibles sur la photo semblent être l’Ache nodiflore (Apium nodiflorum) ou l'Ache rampante (Helosciadium repens), qui peut parfois lui ressembler fortement). Remarque : cette pièce d'eau héberge aussi une autre espèces, encore à identifier (feuilles d’un beau vert en larges rosettes sur fond de feuilles mortes en décomposition) est présente au premier plan. Cette eau cristalline alimente ensuite deux petites mares dont la première semble polluée et la seconde plus encore (apport d'engrais venant d’un petit champs très caillouteux qui les jouxte, et qui a été récemment labouré et peut être un peu trop enrichi en engrais à moins qu’il y ait eu un cadavre d’animal dans l’eau ?. Le 3ème de ces points d’eau était en avril 2018 nettement « dystrophe » (eau brune, malodorante et emplie d'une masse dense d'algues vertes filamenteuses) English: Subaquatic flora (still completely submerged) in a kind of cistern with very clear water and a wall of stone masonry. This habitat is here colonized by 2 plants (semi-aquatic ?) which make there a beautiful "aquarium-equivalent" of several cubic meters (without visible fish that day nor amphibians, but with some larvae of cranes on the background). The large plants appear to be Nodiflora ache ( Apium nodiflorum) or creeping ache (Helosciadium repens) and another species (leaves in large rosettes, on bottom of dead leaves in decomposition). This crystalline water then feeds two small pools, the first of which is polluted and the second more (fertilizer input from a small stony field that has been recently plowed and may be a little too fertilized) The third of these points water was in April 2018 "dystrophic" (brown water, smelly and filled with a dense mass of algae) filamentous green) |
| Date | |
| Source | Own work |
| Author | Lamiot |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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| current | 10:56, 22 May 2018 | | 4,608 × 3,456 (3.61 MB) | Lamiot (talk | contribs) | User created page with UploadWizard |
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