Efecto de la colonia de gaviota patiamarilla sobre los suelos de dos hábitats de interés comunitario en el Parque Nacional de las Calanques (SE Francia)

Abstract : The seabirds exert a strong pressure on the vegetation where they locate their colonies, arriving to cause the disappearance of sensitive species. In the National Park of the Calanques is an important colony of yellow-legged gull and communities and plant species of high environmental interest. This work aims to evaluate the influence of the colonies of this seagull on the properties of the soil in a Mediterranean climate. To do this, different subcolonies located in habitats of community interest were selected. The samples were collected after the reproductive period, determining the total content and bioavailable forms of N and P. The results show a marked enrichment of these two macronutrients in all their forms in the soils of the colony with respect to the control plot. These results are in accordance with the idea that seabirds are powerful modulators of edaphic conditions in coastal areas, exerting a strong influence on the biogeochemical cycle of N and P. Consequently, the colonization of new spaces or the change of the population could cause a substantial change in plant communities and even cause the disappearance of species with some level of protection.
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Saúl de la Peña-Lastra, Xosé Lois, Pérez Otero, Laurence Affre, Frederic Medail, et al.. Efecto de la colonia de gaviota patiamarilla sobre los suelos de dos hábitats de interés comunitario en el Parque Nacional de las Calanques (SE Francia). VII Congreso Ibérico de las Cienias del Suelo, Jun 2018, Donostia-San Sebastian, España. ⟨hal-01889007⟩

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