{"id":44158,"date":"2024-10-23T16:40:39","date_gmt":"2024-10-23T14:40:39","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=article-foret-nature&p=44158"},"modified":"2024-10-23T16:40:39","modified_gmt":"2024-10-23T14:40:39","slug":"bases-biologiques-et-eco-hydrauliques-pour-la-restauration-de-la-continuite-piscicole-en-riviere-premier-bilan-et-perspectives","status":"publish","type":"article-foret-nature","link":"https:\/\/foretnature.be\/en\/article-foret-nature\/bases-biologiques-et-eco-hydrauliques-pour-la-restauration-de-la-continuite-piscicole-en-riviere-premier-bilan-et-perspectives\/","title":{"rendered":"Bases biologiques et \u00e9co-hydrauliques pour la restauration de la continuit\u00e9 piscicole en rivi\u00e8re : premier bilan et perspectives"},"content":{"rendered":"

Depuis 1997 a lieu un inventaire des obstacles \u00e0 la libre circulation des poissons dans les rivi\u00e8res de Wallonie. Ce travail permet de mettre en avant les difficult\u00e9s de franchissement des obstacles rencontr\u00e9s pour diff\u00e9rentes esp\u00e8ces : en fonction des esp\u00e8ces, un obstacle peut \u00eatre class\u00e9 comme mineur, important, majeur ou infranchissable. Afin d\u2019\u00e9tudier ces obstacles, deux cent sept poissons de diverses esp\u00e8ces ont \u00e9t\u00e9 radio-marqu\u00e9s et suivis dans plusieurs bassins versants. Parmi les esp\u00e8ces suivies, la truite poss\u00e8de les meilleures capacit\u00e9s de franchissement d\u2019obstacle, devant l\u2019ombre. Apr\u00e8s analyse biologique des obstacles et des donn\u00e9es de franchissement, il est envisageable, pour certains endroits, d\u2019am\u00e9nager des obstacles consid\u00e9r\u00e9s comme infranchissables ou majeurs. Pour qu\u2019un obstacle soit \u00e9quip\u00e9 d\u2019un dispositif de franchissement, il faut prendre en consid\u00e9ration les facteurs suivants : pr\u00e9sence des esp\u00e8ces de poissons avec une grande valeur \u00e9cologique ; la position strat\u00e9gique de l\u2019obstacle dans l\u2019axe fluvial (\u00e0 la base d\u2019un axe) ; un gain d\u00e9mographique pr\u00e9visible pour les esp\u00e8ces ; une am\u00e9lioration consid\u00e9rable du degr\u00e9 de franchissabilit\u00e9 effective par les poissons ; des opportunit\u00e9s locales d\u2019am\u00e9nagement (travaux \u00e0 r\u00e9aliser \u00e0 court terme, par exemple).<\/p>","protected":false},"excerpt":{"rendered":"

Depuis 1997 a lieu un inventaire des obstacles \u00e0 la libre circulation des poissons dans les rivi\u00e8res de Wallonie. Ce travail permet de mettre en avant les difficult\u00e9s de franchissement des obstacles rencontr\u00e9s pour diff\u00e9rentes esp\u00e8ces : en fonction des esp\u00e8ces, un obstacle peut \u00eatre class\u00e9 comme mineur, important, majeur ou infranchissable. Afin d\u2019\u00e9tudier ces […]<\/p>","protected":false},"featured_media":0,"template":"","categories":[49],"acf":[],"yoast_head":"\nBases biologiques et \u00e9co-hydrauliques pour la restauration de la continuit\u00e9 piscicole en rivi\u00e8re : premier bilan et perspectives - For\u00eat.Nature<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/foretnature.be\/en\/article-foret-nature\/bases-biologiques-et-eco-hydrauliques-pour-la-restauration-de-la-continuite-piscicole-en-riviere-premier-bilan-et-perspectives\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bases biologiques et \u00e9co-hydrauliques pour la restauration de la continuit\u00e9 piscicole en rivi\u00e8re : premier bilan et perspectives - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Depuis 1997 a lieu un inventaire des obstacles \u00e0 la libre circulation des poissons dans les rivi\u00e8res de Wallonie. Ce travail permet de mettre en avant les difficult\u00e9s de franchissement des obstacles rencontr\u00e9s pour diff\u00e9rentes esp\u00e8ces : en fonction des esp\u00e8ces, un obstacle peut \u00eatre class\u00e9 comme mineur, important, majeur ou infranchissable. 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