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Scientific diagram showing the ecological relationship between beavers and dragonflies, detailing beaver's role in creating ponds and dragonflies' life cycle within those habitats.

🦫🦋 Schéma conceptuel – Castors et Odonates (version finale) 1. Organisation générale Schéma horizontal, en 3 grands blocs reliés par des flèches → (cause → effets → réponses biologiques). 🦫 Bloc 1 – Castor (Castor canadensis / C. fiber) Silhouette de castor + barrage Texte associé : Ingénieur d’écosystème Construction de barrages Création d’étangs ➡️ Flèche vers le bloc 2 : « Modification hydrologique » 🌿 Bloc 2 – Étangs de castors / Milieux lentiques Illustrations : Étang forestier Zones peu profondes Végétation aquatique et rivulaire Texte structuré : Eaux calmes (lenticité) Stabilité hydrique Forte hétérogénéité d’habitats Persistance même après abandon ➡️ Flèches multiples vers le bloc 3 🦋 Bloc 3 – Odonates (cycle de vie) Divisé en 3 sous‑parties, avec dessins biologiquement corrects. a) Ponte Femelle anisoptère/zygoptère Ponte sur végétation aquatique ou eau libre Texte : Sites de ponte favorisés Végétation émergente 📎 Référence intégrée discrètement : Savard 2013 – Le Naturaliste canadien b) Développement larvaire (⚠️ terme corrigé) Larve d’anisoptère réaliste : Corps trapu Masque préhensile visible Pas de branchies caudales (contrairement aux zygoptères) Substrat vaseux + végétation Texte : Développement larvaire Ressources trophiques abondantes Protection contre les crues c) Émergence et adultes Exuvie sur tige Imago posé à proximité de l’étang Texte : Succès d’émergence élevé Abondance et diversité accrues 📚 Encadré références (en bas du schéma) Petit Voir plus

#scientific diagram #ecology #nature #technical illustration

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