Structure and temporal dynamics of a seaweed assemblage dominated by the invasive lineage 2 of Asparagopsis taxiformis (Bonnemaisoniaceae, Rhodophyta) in the Alboran Sea
Metadatos
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Hellenic Centre for Marine Research
Materia
Alboran Sea Biomass Evenness Invasive Gametophyte Shannon index Species richness
Fecha
2018-05-18Referencia bibliográfica
ZANOLLA, M., CARMONA, R., DE LA ROSA, J., & ALTAMIRANO, M. (2018). Structure and temporal dynamics of a seaweed assemblage dominated by the invasive lineage 2 of Asparagopsis taxiformis (Bonnemaisoniaceae, Rhodophyta) in the Alboran Sea. Mediterranean Marine Science, 19(1), 147-155. [http://dx.doi.org/10.12681/mms.1892]
Patrocinador
This work was funded by the projects CGL2008/01549/ BOS (Ministerio de Ciencia e Innovación, Spain), P09- RNM-5187 (Consejería de Innovación, Ciencia y Empresa, Junta de Andalucía, Spain), 806/5.03.3553 and 806/5.03.3673 (Instituto de Estudios Ceutíes, Spain). It was developed in the framework of the Research Collaboration Agreement between Consejería de Medio Ambiente y Ordenación del Territorio de la Junta de Andalucía and the University of Málaga.Resumen
Asparagopsis taxiformis is a rhodophycean species composed of six genetic lineages, one of which is considered a relevant invasive
component of Mediterranean flora. This study describes seasonal changes in the structure and biomass of the native community
associated with A. taxiformis on the coast of Granada (southern Spain). The native community was represented by 18 Rhodophyta,
3 Chlorophyta, and 4 Ochrophyta species. Biomass was dominated by A. taxiformis and Halopteris filicina. In January, A.
taxiformis represented only 16% of the whole community biomass, but 2 months later, more than 90% of the community biomass
was formed by the invasive species. During the study period, species richness, the Shannon diversity index, and species evenness
showed low and generally stable values. Given that A. taxiformis gametophytes are present throughout the year, they likely pose a
constant stress to the development of the native community. This survey provides baseline information on the macroalgal community
structure, which may be useful to further studies on the actual impact of the invasive lineage of A. taxiformis