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- W624739898 abstract "The thesis describes the molluscan biodiversity of the infralittoral off-shore reefs in the Secche di Tor Paterno marine protected area lying in the Central Tyrrhenian Sea off the coasts of Lazio south of Roma. Data originate from underwater sampling activities carried out by SCUBA diving in four biocoenoses: Posidonia oceanica leaves and rhizomes, coralligenous concretions and detritic pools. The representativeness of molluscs as descriptors of biocoenoses is evaluated by preliminary comparisons with data about Polychaeta, Pleocyemata (Crustacea) and Brachiopoda obtained in the same survey. The malacocoenoses of the four biocoenoses are treated in detail. Then data are compared with other data sets to assess differences and similarities with other communities. The agreement between death and living assemblages in the reefs is evaluated for the Posidonia oceanica and the coralligenous biocoenosis and was carried out by a set of standard metrics and some benthic ecology methods.Molluscs perform very well as descriptors of biocoenoses, better than the other phyla. The molluscan assemblages of the reefs are very rich in species despite richness is mainly concentrated in the coralligenous and in the rhizomes of Posidonia oceanica. The leaves of Posidonia oceanica host a rather poor assemblage. Detritic pools host a poor but peculiar species assemblage. The dead-live agreement showed that death assemblages are highly representative of sediments of nearby biocoenoses as a result of low bottom transport. Fidelity metrics suggest a good agreement between the living and death assemblages when species richness and taxonomic composition are considered. The study suggests that fidelity is lower when considering the species dominance. These differences could be associated to the trophism of species and possibly to the species life span." @default.
- W624739898 created "2016-06-24" @default.
- W624739898 creator A5023740079 @default.
- W624739898 date "2011-05-03" @default.
- W624739898 modified "2023-09-24" @default.
- W624739898 title "Molluscs of the marine protected area Secche di Tor Paterno" @default.
- W624739898 doi "https://doi.org/10.6092/unibo/amsdottorato/3531" @default.
- W624739898 hasPublicationYear "2011" @default.
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