The sedimentary dynamics of Sabellaria alveolata bioconstructions (Ostia,Tyrrhenian Sea, central Italy)

作者：Stefania Nunzia Lisco,Pasquale Acquafredda,Salvatore Gallicchio,Luisa Sabato,Andrea Bonifazi,Frine Cardone,Giuseppe Corriero,Maria Flavia Gravina,Cataldo Pierri,Massimo Moretti

摘要：Sabellaria alveolata(Linnaeus 1767)is a polychaete able to build bioconstructions of different thickness,size and patchiness,in intertidal and subtidal environments.Its biological features have been the object of numerous studies worldwide.The worm reefs are formed by millions of tubes built by sand and shells(whole or in fragments)bonded together with a strong glue produced by the worm itself.Hence,Sabellaria alveolata represents a sedimentological asset for the coastal protection,since it contributes to create natural barriers against storm waves and erosion,and supplies the beach with new sandy deposits.This work shows a multidisciplinary approach to studying a bioconstruction of Sabellaria alveolata along the Latium coast(Ostia,Tyrrhenian Sea,central Italy),proposing image analysis as a novel technique to investigate worm reefs,along with classical sedimentological/ecological tools.The Sabellaria bioconstructions have been analysed at different scales of observation,suggesting the more appropriate strategies to develop a reliable model illustrating the different growth steps of these bioconstructions.

发文机构：Dipartimento di Scienze della Terra e Geoambientali Dipartimento di Biologia Dipartimento di Biologia

关键词：SEDIMENTOLOGYSabellariaALVEOLATABioconstructionShallow-marineenvironmentImageanalysisTyrrhenianSEALatiumCOASTOstia

分类号： Q911[天文地球—古生物学与地层学][生物学—古生物学]