Crustacean decapod assemblages associated with fragmented Posidonia oceanica meadows in the Alboran Sea (Western Mediterranean Sea): composition, temporal dynamics and influence of meadow structure
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Autor/esMateo-Ramírez, Angel; Urra, J. (Javier); Marina-Ureña, P. (Pablo); Rueda, J.L. (José Luis); García Raso, José Enrique
Versión del editorhttp://onlinelibrary.wiley.com/doi/10.1111/maec.12284/abstract
Palabras claveAlboran Sea
The decapod assemblage associated with a Posidonia oceanica meadow located near its western limit of biogeographic distribution was studied over an annual cycle. Fauna samples were taken seasonally over a year (five replicates per season) in two sites located 7 km apart, using a non-destructive sampling method (airlift sampler) for the seagrass. The dominant species of the assemblage, Pisidia longimana, Pilumnus hirtellus and Athanas nitescens, were associated with the protective rhizome stratum, which is mainly used as a nursery. The correlations between decapod assemblage structure and some phenological parameters of the seagrass shoots and wave height were negative or null, which reflects that species associated with the rhizome had a higher importance than those associated with the leaf stratum. The abundance and composition of the decapod assemblage as well as the ecological indexes displayed a seasonality trend with maximum values in summer-autumn and minimum in winte ...
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