Coralligenous habitat is a calcareous formation, primarily composed by long-lived encrusting red algae and, secondarily, by sessile invertebrates growing on submerged reefs under dim light conditions; it is considered as an endemic, protected Mediterranean habitat.

This paper presents a study of the coralligenous at a large Mediterranean scale that applied a standardized, non-destructive photo-sampling protocol, developed in the framework of the CIGESMED project.

The results show that the assemblage pattern is not homogeneously distributed across the four Mediterranean ecoregions studied and that the assemblage pattern does not change significantly when the information is aggregated to higher taxonomic levels.

The authors conclude that, although still preliminary at the pan-Mediterranean scale, the outcomes of the study set the scene for future comparisons as more data sets become available but also for comparisons between taxonomic and functional patterns.

Çinar et al. (2020) Coralligenous assemblages along their geographical distribution: Testing of concepts and implications for management. Aquatic Conservation: Marine and Freshwater Ecosystems 30:1578.1594.