On the occurrence of Coralligenous algae in the Johnston Bank (Aegean Sea)

Yelda Aktan

Faculty of Fisheries, Istanbul University, Ordu St. No: 200, 34470 Laleli, Istanbul, TURKEY


Coralligenous formations, referred to as Maërl beds, are important habitats for some fishes, molluscs, crustaceans and act as nursery areas for the juvenile stages of these commercial species, analogous to kelp forests in the oceans and sea grass beds in the coastal Mediterranean waters. Despite their ecologic and economic importance, there is no sufficient data on the distribution of coralligenous substrata in the high sea areas of the Mediterranean Sea. This study provides contribution to presence of Coralline algae which are the major coralligenous builders in the high sea areas in the Aegean Sea.

Keywords: Maërl beds, Coralligenous algae, high sea areas, Johnston Bank, Aegean Sea


Aysel, V., Erduğan, H., Okudan, E.Ş., Erk, H. (2005) Marine algae and seagrasses of Bozcaada (Çanakkale, Aegean Sea, Turkey). EU Journal of Fisheries & Aquatic Science 22 (1,2): 59-68 (in Turkish).

Aysel, V., Okudan, E.Ş., Erduğan, H. (2006) Marine algae and seagrasses of Mersin shore (Mediterranean, Turkey). J. Black Sea/Mediterranean Environment 12: 79-97.

Ballesteros, E. (2006) Mediterranean coralligenous assemblages: A synthesis of present knowledge. Oceanography and Marine Biology: An Annual Review 44: 123-195.

Boudouresque, C.F. (2004) Marine biodiversity in the Mediterranean: status of species, populations and communities. Scientific Reports of Port-Cros National Park 20: 97-146.

Casellato, S., Stefanon, A. (2008) Coralligenous habitat in the northern Adriatic Sea: an overview. Marine Ecology 29: 321-341.

Ferdeghini, F. Acunto, S. Cocito S., Cinelli F. (2000) Variability at different spatial scales of a coralligenous assemblage at Giannutri Island (Tuscan Archipelago, northwest Mediterranean). Hydrobiologia 440: 27-36.

Gerovasileiou, V., Sini, M.I., Poursanidis, D., Koutsoubas D. (2009) Contribution to the knowledge of Coralligenous communities in the NE Aegean Sea. The 1st Mediterranean Symposium on the Coralligenous Conservation and other calcareous bio-concretions. RAC/SPA, Tabarka, Tunisia: 14-16 January 2009.

Guiry, M.D., Guiry, G.M. (2012) AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Available at http://www.algaebase.org (accessed 17 February 2012).

Hall-Spencer, J.M., Kelly, J., Maggs, C.A. (2010) Background document for Maërl beds. OSPAR commission. The Department of the Environment, Heritage and Local Government (DEHLG), Ireland, pp. 36.

Kamenos, N.A., Moore, P.G., Hall-Spencer, J.M. (2004) Attachment of the juvenile queen scallop (Aequipecten opercularis (L.)) to maerl in mesocosm conditions, juvenile habitat selection. Journal of Experimental Marine Biology and Ecology 306: 139-155.

Kisseleva, M.I. (1983) Comparative characteristics of the benthos at the some banks in the Aegean Sea. Thalasssographica 6: 107-118.

Maneveldt, G.W., Chamberlain, Y.M, Keats, D.W. (2008) A catalogue with keys to the non-geniculate coralline algae (Corallinales, Rhodophyta) of South Africa. South African Journal of Botany 74: 555-566.

Öztürk, B. (2009) Marine protected areas in the high seas of the Aegean and Eastern Mediterranean Seas, some proposals. J. Black Sea/Mediterranean Environment 15: 69-82.

SAP BIO (2003) The coralligenous in the Mediterranean Sea. Definition of the coralligenous assemblage in the Mediterranean, its main builders, its richness and key role in benthic ecology as well as its threats. Project for the preparation of a Strategic Action Plan for the Conservation of the Biodiversity in the Mediterranean Region. (SAP BIO) RAC/SPA- Regional Activity Centre for Specially Protected Areas, pp. 87.

Sciberras, M., Rizzo, M., Mifsud, J.R., Camilleri, K., Borg, J.A., Lanfranco, E., Schembri, P.J. (2009) Habitat structure and biological characteristics of a maerl bed off the northeastern coast of the Maltese Islands (central Mediterranean). Mar Biodiv. 39: 251-264.

Topaloğlu, B., Öztürk, B., Topçu, E.N., Gönülal, O. (2010) A prelimminary study on the macrozoobenthic invertebrate fauna of two banks in the North Aegean Sea. Rapp. Comm. Int Mer Médit. 39: 682.

UNEP/MAP (2007) Draft Action Plan on Protecting the Coralligenous and Other Calcareous Bio-concretions in the Mediterranean. UNEP/MAP Athens, pp. 25.

UNEP-MAP RAC/SPA (2010) The Mediterranean Sea Biodiversity: State of the Ecosystems, Pressures, Impacts and Future Priorities. (Eds. H. Bazairi, S. Ben Haj, F. Boero, D. Cebrian, S. De Juan, A. Limam, J. Lleonart, G. Torchia, C. Rais), RAC/SPA, Tunis, pp. 100.