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Concentrated solar power plants (CSP) combined with thermal energy storage (TES) offers the benefit to provide continuous electricity production by renewable energy feed. There are several TES technologies to be implemented, being the thermochemical energy storage the less studied and the most attractive since its volumetric energy density is 5 and 10 times higher than latent and sensible TES, respectively. Thermochemical energy storage technology is based on reversible chemical reactions, also named thermochemical materials (TCM). One of the main challenges of TCM is to achieve a proper reversibility of the reactions, which in practical conditions leads to lower efficiencies than the theoretically expected. A new concept based on changing from reversible TCM reactions towards TCM consecutive reactions aims to eliminate reversibility problems and therefore improve the overall efficiency. Consecutive TCM reactions can either be based in one cycle, where reactants are needed to feed the reaction, or two coupled cycles which offer the possibility to work without any extra mass reactants input. The plausibility of the implementation of both concepts in CSP is detailed in this paper and case studies are described for each one.

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I describe the food and feeding habits of 61 adult palmate newts during their aquatic phase from three localities in NE Iberia. 1 used the stomach-flushing method to obtain the prey, of the newts with 100 % efficacy. Diptera were overall the most important prey of palmate newts. Diptera and Ostracoda were the main prey in two localities, but in the third locality only Ostracoda were the main prey. There was generally an interpopulation trophic segregation. Analyzing the data at different localities demonstrated trophic segregation at Serra de Daró and Canet d'Adri, while Podocopa dominated the diet at Fogars del Tordera.

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