24 resultados para Contaminación salina

em Acceda, el repositorio institucional de la Universidad de Las Palmas de Gran Canaria. España


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Máster en Medio Ambiente Litoral y Marino

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Facultad de Ciencias del Mar, Departamento de Biología

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[EN] These experiments test whether respiration can be predicted better from biomass or from potential respiration, a measurement of the mitochondrial and microsomal respiratory electron transport systems. For nearly a century Kleiber's law or a similar precursor have argued the importance of biomass in predicting respiration. In the last decade, a version of the Metabolic Theory of Ecology has elaborated on Kleiber's Law adding emphasis to the importance of biomass in predicting respiration. We argue that Kleiber's law works because biomass packages mitochondria and microsomal electron transport complexes. On a scale of five orders of magnitude we have shown previously that potential respiration predicts respiration aswell as biomass inmarine zooplankton. Here, using cultures of the branchiopod, Artemia salina and on a scale of less than 2 orders of magnitude,we investigated the power of biomass and potential respiration in predicting respiration.We measured biomass, respiration and potential respiration in Artemia grown in different ways and found that potential respiration (Ф) could predict respiration (R), both in μlO2h−1 (R=0.924Φ+0.062, r2=0.976), but biomass (as mg dry mass) could not (R=27.02DM+8.857, r2=0.128). Furthermore the R/Ф ratio appeared independent of age and differences in the food source.

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[ES] En este trabajo se utilizan los principios generales de la óptica geométrica y la forma del espectro teórico de oleaje TMA (basado en datos experimentales) para derivar un modelo numérico aplicable en aguas de poca profundidad, cuyo objetivo final es prever los impactos medioambientales provocados en condiciones de oleaje y contaminación extremales. Este modelo es puesto en práctica en una zona costera del archipiélago canario, siendo sus resultados bastante coherentes con los observados en situaciones reales.