The action of fish and invertebrates does not reverse the effects of excess nutrients on the Posidonia meadows of the Balearic Islands

  • The thesis of Ines Castejón (IMEDEA, CSIC-UIB) recommends controlling the use of agricultural fertilizers and the state and the depth of wastewater spilling


Mallorca, 10 February 2012. The thesis of Agnes Castejón Silvo evaluates the importance of consumption of Posidonia oceania by the fauna of the seabed to reverse the effects caused by excessive nutrients on epiphytic algal biomass (living on leaves of the posidonia) and may compromise survival.

The investigation determine that the increase in epiphytic algae caused by increased nutrients is stronger than epiphyte consumption by fish and invertebrates. Epiphyte load endangers the seagrass meadows of the bay of Palma, whereby is recommended for control the state and depth of wastewater spilling and non-abusive use of agricultural fertilizers.

The thesis Grazing on the epiphytic community of Posidonia oceanica (L.) Delile: An assessment of STI relevance as a buffering process of eutrophication effects was carried out at the Mediterranean Institute for Advanced Studies (IMEDEA, CSIC-UIB) and was co-directed by Dr. Jorge Munoz Terrados and Dr. Beatriz Morales-Nin, researchers at IMEDEA (CSIC-UIB).


Source: Servei de Comunicació UIB.

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