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  • Eutrophication  (1)
  • Sima de los Huesos  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Human evolution 15 (2000), S. 75-82 
    ISSN: 1824-310X
    Keywords: Atapuerca ; Sima de los Huesos ; Homo heidelbergensis ; Gran Dolina ; Homo antecessor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract After 20 years of research, the Atapuerca sites have provided a large amount of archaeological and palaeontological remains. Human fossils have been found in three sites: Gran Dolina, galería and Sima de los Huesos. The Early Pleistocene human fossils from Gran Dolina have been ascribed to a new species,Homo antecessor, that represent the last common ancestor of Neandertals and modern humans. The Sima de los Huesos fossils and all the European Middle Pleistocene human fossils are the ancestors exclusively of the Neandertals, which evolved in Europe in conditions of geographic and genetic isolation.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2021-05-19
    Description: Entre los años 1990 y 1991 se estudió el Golfo de Guacanayabo, desde 1998 hasta 2003 se evaluó el Golfo de Batabanó y el Archipiélago Sabana Camagüey fue investigado en la etapa 2001-2005, con el objetivo de evaluar los contenidos de nitrógeno y fósforo en estas tres regiones de la plataforma marina cubana y establecer las relaciones existentes entre ambos nutrientes. Los golfos de Guacanayabo y Batabanó poseen un mayor potencial de nitrógeno y fósforo que el ecosistema costero Sabana-Camagüey, debido al menor desarrollo de la red fluvial en este ecosistema, aunque en las tres regiones las concentraciones de estos compuestos están bajo una acentuada influencia antropogénica. La relación nitrógeno total-fósforo total N.T./P.T., mostró una tendencia a decrecer en regiones con cobertura de pastos marinos, atribuido a las cantidades de fósforo que aportar los mismos a la matriz agua, aunque predominaron los valores en que ninguno de los nutrientes es restrictivo y a diferencia de la relación nitrógeno total inorgánico-fósforo inorgánico NTI/P no tiene un patrón bien definido en los diferentes períodos climáticos
    Description: The Gulf of Guacanayabo was studied in 1990 and 1991. The Gulf of Batabanó was evaluated from 1998 to 2003, and Sabana-Camagüey Archipelago was investigated in the stage 2001-2005. The objective of these researches was to evaluate nitrogen and phosphorus contents in these three regions of Cuban marine shelf and to establish the relations existing between both nutrients. The gulfs of Guacanayabo and Batabanó have a greater nitrogen and phosphorus potential than Sabana-Camagüey coastal ecosystem, due to the lesser development of the fluvial network in this ecosystem; although in the three regions the concentrations of these compounds receive a marked anthropogenic influence. The total nitrogen-total phosphorus ratio, N.T./P.T., showed a tendency to decrease in regions with seagrass cover, attributed to the amounts of phosphorus that this biotope contributes to the water matrix, although the predominant values were those in which none of the nutrients is restrictive, and unlike the total inorganic nitrogen-inorganic phosphorus ratio, NTI/P, it does not have a well-defined pattern in the different climatic periods.
    Description: Published
    Description: nitrógeno, fósforo, eutroficación, nitrogen, phosphorus, eutrophication
    Keywords: Eutrophication ; Nitrogen ; Phosphorus ; Eutrophication ; Nitrogen ; Phosphorus ; Man-induced effects ; Archipelagoes
    Repository Name: AquaDocs
    Type: Journal Contribution
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