detail. Another exotic species, Polycerella emertoni , is extremely small in size, and is closely related to the seasonal bryozoan Amathia verticillata , an organism that often displaces native fauna during the summer but disappears when the water cools. “In general, the Mediterranean is said to be moving towards increasingly tropical conditions. If this process continues, we will have to get used to seeing more and more exotic marine species », warn Manuel Ballesteros and Miquel Pontes.Few species of birds are as recognizable and familiar to the naked eye as the white stork, which after a time in which its survival was in question, has seen how the changes in habits promoted for its conservation have made it once again present in our ecosystems. But, is its

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presence in certain areas compatible with their use for Macedonia Phone Number List extensive livestock farming? A work developed by researchers from the Polytechnic University of Madrid underlines the importance of balancing the presence of the white stork in the meadows to avoid that their habits reduce the floristic diversity in certain areas and therefore limit that these lands can be used for grazing. The work, one of the few that focuses on how the conservation of a protected species can affect the composition of the herbaceous stratum in the dehesas where they are densely concentrated, highlights the colonization capacity of the white stork and its potential for modify the structure of the pastures if their presence in them is not limited. Photo: UPM “The objective of this study

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was to evaluate the impact caused by the presence of a colony of storks with a high density of individuals on some ecosystem services of provision (quantity and quality of forage for livestock), of support (nutrient cycle, biodiversity ) and regulation (carbon sequestration, soil structure) generated in a meadow of ash trees located in the Sierra de Guadarrama (Madrid) ”, explains Aida López, researcher at the Department of Systems and Natural Resources at the Escuela Técnica Superior de Ingenieros de Montes, Forestal y del Medio Natural de la UPM and one of the authors of this work. The dehesas are habitats internationally recognized for their ecological, socioeconomic and cultural importance since they maintain higher levels of biological diversity

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