Sediment as a constituent of Mediterranean benthic communities dominated by <i>Caulerpa racemosa var. cylindracea</i>

Luigi Piazzi; David Balata; Luca Foresi; Cristina Cristaudo; Francesco Cinelli

doi:10.3989/scimar.2007.71n1129

Autores/as

Luigi Piazzi Dipartimento di Biologia, Università di Pisa, Pisa
David Balata Dipartimento di Biologia, Università di Pisa, Pisa
Luca Foresi Dipartimento di Scienze della Terra, Università di Siena, Siena
Cristina Cristaudo Dipartimento di Biologia, Università di Pisa, Pisa
Francesco Cinelli Dipartimento di Biologia, Università di Pisa, Pisa

DOI:

https://doi.org/10.3989/scimar.2007.71n1129

Palabras clave:

invasiones biológicas, Caulerpa racemosa, comunidades macroalgales, Mediterráneo, sedimentos

Resumen

Las comunidades de macroalgas mediterráneas en áreas invadidas por C. racemosa var. cylindracea y áreas no invadidas fueron comparadas y el sedimento retenido caracterizado. Los resultados muestran que las áreas invadidas por C. racemosa var. cylindracea difieren de forma marcada de las poblaciones no invadidas: algas incrustantes y erectas, articuladas y foliosas, decrecen en las áreas invadidas, mientras que las especies filamentosas oportunistas aumentan su abundancia. El porcentaje de sedimento fue siete veces mayor en áreas invadidas por C. racemosa var. cylindracea que en áreas no invadidas. Las características del sedimento atrapado fueron similares en todas las poblaciones estudiadas, mientras que los valores del potencial redox fueron menores en las zonas invadidas. Nuestros resultados sugieren que el sedimento constituye un componente importante en las poblaciones de C. racemosa, var. cylindracea, posiblemente aumentando la capacidad competitiva de esta especie.

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