Indian Journal of Geo-Marine Sciences

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Additional New Records of Caulerpa cylindracea Sonder 1845 along the West Algerian Coasts


Affiliations
1 Ecology and Environment Department, Faculty of Sciences of Nature and Life and Sciences of the Earth and the Universe, Abou Bekr Belkaid University / Tlemcen – 13000, Algeria
2 Lab of Protection, Valorisation of Marine and Littoral Resources, and Molecular Systematic, Faculty of Science of Nature and Life, Abdelhamid Ibn Badis University / Mostaganem – 27000, Algeria
3 National Research Council, Institute for Agricultural and Forest Systems in the Mediterranean, Rende Research Unit /Rende, CS – 87036, Italy

Since considered as invasive species, Caulerpa cylindracea Sonder 1845 has been the subject of numerous prospecting works aiming its localisation and identification along the western Mediterranean Coasts. In this study, we provide new occurrence of the introduced seaweed Caulerpa cylindracea in the West Algerian coasts. C. cylindracea has been reported for the first time in Canastel and Zimba (West Algerian coasts) at different density distribution levels. The colonisation level was estimated to Level (I) for Zimba, Canastel and Marsat El Hadjaj sites, which indicated a beginning of spreading. By contrast, in Cap Carbon a Level (II) was recorded suggesting an advanced colonisation of the invasive taxon. Macroalgae and seagrass assemblage characterisation showed low cover for all species in the invasion zone. Accordingly, Caulerpa cylindracea is more present in Cap Carbon than in Zimba, Canastel and Marsat El Hadjaj. Considering the observed abundance of macroalgae and seagrasses, Caulerpa prolifera seemed to resist the invasion of C. cylindracea in Marsat El Hadjaj.
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  • Additional New Records of Caulerpa cylindracea Sonder 1845 along the West Algerian Coasts

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Authors

M. E. A. Bentaallah
Ecology and Environment Department, Faculty of Sciences of Nature and Life and Sciences of the Earth and the Universe, Abou Bekr Belkaid University / Tlemcen – 13000, Algeria
N. E. Taibi
Lab of Protection, Valorisation of Marine and Littoral Resources, and Molecular Systematic, Faculty of Science of Nature and Life, Abdelhamid Ibn Badis University / Mostaganem – 27000, Algeria
N. Cantasano
National Research Council, Institute for Agricultural and Forest Systems in the Mediterranean, Rende Research Unit /Rende, CS – 87036, Italy

Abstract


Since considered as invasive species, Caulerpa cylindracea Sonder 1845 has been the subject of numerous prospecting works aiming its localisation and identification along the western Mediterranean Coasts. In this study, we provide new occurrence of the introduced seaweed Caulerpa cylindracea in the West Algerian coasts. C. cylindracea has been reported for the first time in Canastel and Zimba (West Algerian coasts) at different density distribution levels. The colonisation level was estimated to Level (I) for Zimba, Canastel and Marsat El Hadjaj sites, which indicated a beginning of spreading. By contrast, in Cap Carbon a Level (II) was recorded suggesting an advanced colonisation of the invasive taxon. Macroalgae and seagrass assemblage characterisation showed low cover for all species in the invasion zone. Accordingly, Caulerpa cylindracea is more present in Cap Carbon than in Zimba, Canastel and Marsat El Hadjaj. Considering the observed abundance of macroalgae and seagrasses, Caulerpa prolifera seemed to resist the invasion of C. cylindracea in Marsat El Hadjaj.