955 resultados para CHACO AUSTRAL
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Incluye Bibliografía
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Analiza la situacion actual del transporte maritimo en la Region Austral de Chile y presenta recomendaciones para mejorar su eficiencia en los aspectos operacionales, tecnologicos, institucionales, economicos y financieros.
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Analiza el transporte de mercancías por carretera a través de Argentina desde la Zona Central a la Región Austral de Chile y sus enlaces por barco.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Comenta el reciente programa de estabilización argentino, con breves referencias a la secuencia de hechos previos que condujo a una muy alta inflación y a los primeros efectos del programa
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Máster Internacional de Turismo
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[EN] The vertical distribution (0?550 m) of zooplankton biomass, and indices of respiration (electron transfer system [ETS]) and structural growth (aminoacyltRNA synthetases activity [AARS]), were studied in waters off the Antarctic Peninsula during the austral summer of 2000. The dominant species were the copepod Metridia gerlachei and the euphausiid Euphausia superba. We observed a vertical krill/copepod substitution in the water column. The zooplankton biomass in the layer at a depth of 200?500 m was of the same magnitude as the biomass in the layer at a depth of 0?200 m, indicating that biomass in the mesopelagic zone is an important fraction of the total zooplankton in Antarctic waters. The metabolic rates of the zooplankton community were sustained by less than 0.5% of the primary production in the area, suggesting that microplankton or small copepods are the main food source. Neither food availability nor predation seemed to control mesozooplankton biomass. The wide time lag between the abundance peak of the dominant copepod (M. gerlachei) and the phytoplankton bloom is suggested to be the main explanation for the low summer zooplankton biomass observed in these waters.