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ArticleErratum to: Merging scleractinian genera: the overwhelming genetic similarity between solitary Desmophyllum and colonial Lophelia(BioMed Central, 2016-07-19) Addamo, Anna M. ; Vertino, Agostina ; Stolarski, Jaroslaw ; Garcia-Jimenez, Ricardo ; Taviani, Marco ; Machordom, AnnieAs a result of vendor errors being introduced during processing, the original version of this article was published with some duplication errors in Table 1.
ArticleApplication of hyperspectral imaging to underwater habitat mapping, Southern Adriatic Sea(MDPI, 2019-05-16) Foglini, Federica ; Grande, Valentina ; Marchese, Fabio ; Bracchi, Valentina A. ; Prampolini, Mariacristina ; Angeletti, Lorenzo ; Castellan, Giorgio ; Chimienti, Giovanni ; Hansen, Ingrid M. ; Gudmundsen, Magne ; Meroni, Agostino N. ; Mercorella, Alessandra ; Vertino, Agostina ; Badalamenti, Fabio ; Corselli, Cesare ; Erdal, Ivar ; Martorelli, Eleonora ; Savini, Alessandra ; Taviani, MarcoHyperspectral imagers enable the collection of high-resolution spectral images exploitable for the supervised classification of habitats and objects of interest (OOI). Although this is a well-established technology for the study of subaerial environments, Ecotone AS has developed an underwater hyperspectral imager (UHI) system to explore the properties of the seafloor. The aim of the project is to evaluate the potential of this instrument for mapping and monitoring benthic habitats in shallow and deep-water environments. For the first time, we tested this system at two sites in the Southern Adriatic Sea (Mediterranean Sea): the cold-water coral (CWC) habitat in the Bari Canyon and the Coralligenous habitat off Brindisi. We created a spectral library for each site, considering the different substrates and the main OOI reaching, where possible, the lower taxonomic rank. We applied the spectral angle mapper (SAM) supervised classification to map the areal extent of the Coralligenous and to recognize the major CWC habitat-formers. Despite some technical problems, the first results demonstrate the suitability of the UHI camera for habitat mapping and seabed monitoring, through the achievement of quantifiable and repeatable classifications.
ArticleMerging scleractinian genera : the overwhelming genetic similarity between solitary Desmophyllum and colonial Lophelia(BioMed Central, 2016-05-18) Addamo, Anna M. ; Vertino, Agostina ; Stolarski, Jaroslaw ; Garcia-Jimenez, Ricardo ; Taviani, Marco ; Machordom, AnnieIn recent years, several types of molecular markers and new microscale skeletal characters have shown potential as powerful tools for phylogenetic reconstructions and higher-level taxonomy of scleractinian corals. Nonetheless, discrimination of closely related taxa is still highly controversial in scleractinian coral research. Here we used newly sequenced complete mitochondrial genomes and 30 microsatellites to define the genetic divergence between two closely related azooxanthellate taxa of the family Caryophylliidae: solitary Desmophyllum dianthus and colonial Lophelia pertusa. In the mitochondrial control region, an astonishing 99.8 % of nucleotides between L. pertusa and D. dianthus were identical. Variability of the mitochondrial genomes of the two species is represented by only 12 non-synonymous out of 19 total nucleotide substitutions. Microsatellite sequence (37 loci) analysis of L. pertusa and D. dianthus showed genetic similarity is about 97 %. Our results also indicated that L. pertusa and D. dianthus show high skeletal plasticity in corallum shape and similarity in skeletal ontogeny, micromorphological (septal and wall granulations) and microstructural characters (arrangement of rapid accretion deposits, thickening deposits). Molecularly and morphologically, the solitary Desmophyllum and the dendroid Lophelia appear to be significantly more similar to each other than other unambiguous coral genera analysed to date. This consequently leads to ascribe both taxa under the generic name Desmophyllum (priority by date of publication). Findings of this study demonstrate that coloniality may not be a robust taxonomic character in scleractinian corals.