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Français : Bryozoaire (cristatella mucedo) trouvé vivant en colonies dans la Moyenne-Deûle dans le nord de la France (cette espèce fragile semble être apparue (ou réapparue là) après un apport d'eau d'exhaure provenant de la nappe ; plus de 2 millions de m3/an). Elle vit dans ce cas dans une eau eutrophe dont les sédiments sont pollués (autrefois en contact permanent avec la Haute-Deûle provenant du bassin minier (où l'on trouvait notamment l'usine Métaleurop Nord), sur des branches, pieux de bois, poteaux ou parois [mais pas ou très rarement et dans ce cas peut être accidentellement) sur le sédiment] de cet ancien canal qui n'est plus ouvert à la circulation, remplacé par une section mise à grand gabarit plus au nord-ouest.
English: Bryozoan (cristatella mucedo) found living in colonies in the "Mid-Deûle" in the north of France - this fragile species seems to have appeared (or reappeared there) after import of clea water in the canal (over 2 million m3 / year)- . These animals lives in this case in a eutrophic water with sediments are polluted (formerly in constant contact with Upper-Deûle River, coming from the mining area (which were amongst the Métaleurop North Plant), on branches, wood piles, poles or walls ot the canal [but not or very rarely, and in this case may be accidentally) on the sediment] of this ancient channel (that is no longer open to traffic, replaced by a full-size section last more northwest).
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Author Lamiot

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