Anales del Jardín Botánico de Madrid, Vol 76, No 1 (2019)

Biodiversity of epiphytic macroalgae (Chlorophyta, Ochrophyta, and Rhodophyta) on leaves of Zostera marina in the northwestern Iberian Peninsula


https://doi.org/10.3989/ajbm.2502

Verónica García-Redondo
BioCost Research Group, University of A Coruña, Spain
orcid http://orcid.org/0000-0001-7981-6595

Ignacio Bárbara
BioCost Research Group, University of A Coruña, Spain
orcid http://orcid.org/0000-0003-1779-0224

Pilar Díaz-Tapia
BioCost Research Group, University of A Coruña, Spain
orcid http://orcid.org/0000-0003-4680-4867

Abstract


The composition, abundance, and distribution of epiphytic macroalgae living in meadows of Zostera marina L. in the northwestern Iberian Peninsula are here analyzed. We identified 63 species: 40 red algae, 16 brown algae, and 7 green algae. Most of them are classified as filamentous or filiform functional forms, while Pneophyllum fragile Kütz. was the only encrusting species. In general, the surface covered by epiphytes on the leaves of Zostera marina was low and a 43% of species were only found in juvenile stages. Regarding their frequency, 10 species were collected in the majority of the areas, while others were rare. Most species were found both epiphytic and in other substrata of the meadows, but 9 were exclusively epiphytic. We detected 9 introduced species.

Keywords


Asperococcus scaber; biodiversity; epiphytes; Galicia; Gayliella mazoyerae; Iberian Atlantic; marine meadows; Rhodophysema georgei

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