Massive Aggregations of Serpulidae Associated With Eutrophication of the Mar Menor, Southeast Iberian Peninsula

摘要: For decades, nutrients and organic matter inputs to the Mar Menor coastal lagoon have favoured change from an original oligotrophic state a eutrophic state. The reached stage of severe eutrophication "environmental collapse" during spring 2016. This paper describes massive growth Serpulidae (Annelida, Polychaeta) forming large aggregations reef structures following environmental collapse caused by 2016 crisis. Four species belonging genera Hydroides Gunnerus, 1768 Serpula Linnaeus, 1758 were identified; identified are elegans (Haswell, 1883), dianthus (Verrill, 1873) , concharum (Langerhans, 1880) vermicularis (Linnaeus, 1767). presence bi-operculate tri-operculate specimens is also documented in this study.