Epífitos de las hojas de Posidonia oceanica: variaciones estacionales y batimétricas de biomasa en la pradera de las islas Medes (Girona)

• Autores: Javier Romero Martinengo
• Localización: Oecologia Aquatica, ISSN-e 2604-7810, Vol. 9, Nº. 9, 1988, págs. 19-25
• Idioma: español
• Títulos paralelos:
  • Epífitos de las hojas de Posidonia oceanica: variaciones estacionales y batimétricas de biomasa en la pradera de las islas Medes (Girona}
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  • español

    Biomass seasonal variation of leaf epiphytcs of Posidonia oceanica along a depth gradient in Medes Islands (NE Spain). Biomass seasonal variation of the epiphytes of the mediterranean seagrass Posidonia oceanica was studied by means of a bi-weekly sampling programo Maxima, up lo 0.5 gdw/shool (270 gdw/m2 of sea bottom) are evident in summer all along the depth gradient. A second maximum, in spring, is delecled in the shallower stations. The former corresponds lo the encrusting Rhodophyta-dominated community, while the latter corresponds to another assemblage dominated by Phaeophyta. the relation between epiphyte biomass and sorne biological features of Posidonia was statistically investigaled. From a multiple linear regression model, it is concluded thal the summer community is the endpoint of a succesion interrupted by leaf fall in early autumn, while the spring one is rather photophilic and represents a seasonal aspect of the community.

  • English

    B iomass seasonal variation of leaf epiphytcs of Posidonia oceanica along a depth gradient in Medes Islands (NE Spain). Biomass seasonal variation of the epiphytes of the mediterranean seagrass Posidonia oceanica was studied by means of a bi-weekly sampling programo Maxima, up lo 0.5 gdw/shool (270 gdw/m2 of sea bOllom) are evident in summer all along the depth gradient. A second maximum, in spring, is delecled in the shallower stations. The former corresponds lo the encrusting Rhodophyta-dominated community, while the latter corresponds to another assemblage dominated by Phaeophyta. 1he relation between epiphyte biomass and sorne biological features of Posidonia was statistical1y investigaled. From a multiple linear regression model, it is concluded thal the summer community is the endpoint of a succesion interrupted by leaf faU in early autumn, while the spring one is rather photophilic and represenls a seasonal aspecl of the communiLy.