On the 13th January 2012, the Costa Concordia cruise ship partially sank along its starboard side few hundred meters northern from Giglio Porto (Giglio Island, Italy).

This paper reports on the effectiveness of Reteporella bryozoan genus in the early stage of coralligenous reefs recolonization through the analysis of the settlement and the population size structure over a two-years period at two impacted and two control sites.

The results show how Reteporella spp. colonies strongly recolonized, from 2017 to 2019, the bare coralligenous reefs subjected to the Costa Concordia shipwreck and its related anthropogenic disturbances, notably increasing both their density and percentage coverage.

The authors highlight the implications of the study for the maintenance of the ecological functions, for the recovery processes, and for the future ecological shifts affecting one of the most important Mediterranean coastal ecosystems, the coralligenous reefs.


Casoli et al. (2020) Reteporella spp. success in the re-colonization of bare coralligenous reefs impacted by Costa Concordia shipwreck: The pioneer species you did not expect. Marine Pollution Bulletin 161: 111808.