Zonas de vida natural en el Perú : memoria explicativa sobre el mapa ecológico del Perú / Joseph A. Tosi

SERBIULA (sistema Librum 2.0)
Source: OAI
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    ABSTRACT: A multidimensional approach is taken to clarify an ambiguous archaeobotanical collection from the Zaña Valley, northern Peru. Plant remains, including several possible cultigens, were recovered from Middle Preceramic period (c. 7200–5600 bc) residential sites. Apparently good site integrity and associations, non-modern specimen morphologies and species combinations, and acceptable radiocarbon dates from features and habitational floors conflict with modern dates produced directly from the specimens by the Accelerator Mass Spectrometer (AMS) method. Normally, these dates would invalidate the assemblage. It is questioned from several lines of evidence whether the AMS dates are, for unknown reasons, incorrect. We suggest that, instead of relying on any single technique, such as AMS dating, to winnow archaeobotanical data, it is more useful to develop a framework for evaluating plant remains that utilizes numerous lines of evidence and alternative explanations.
    Journal of Archaeological Science 05/1996; 23(3):391–407. · 2.14 Impact Factor
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    ABSTRACT: The village of La Morada on the northeastern slopes of the Andes, Peru, is a typical example of a recent settlement founded in the Ceja de Selva Alta by families of indigenous and mestizo descent, who originally came from the highlands. They have accumulated experiences of the impact of their resource-management practices, but with heavy emphasis on their highland background. Tremendous changes in the environment have been catalyzed by road construction, introduction of new settlements, crops, and most of all by the introduction of large numbers of cattle.
    AMBIO A Journal of the Human Environment 03/2009; · 2.97 Impact Factor
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    ABSTRACT: The present work represents an updated list of the Monocots (Liliopsida) present in the Venezuelan paramos. This catalog includes 17 families, 123 genera and 520 native species present in this ecosystem in Venezuela. Top monocot families at the species level in the paramos are Orchidaceae with 200, Poaceae with 179, Bromeliaceae with 42 and Cyperaceae with 39 species each one. It was found that of 520 native species, 68 are endemic to Venezuela, and in some cases to adjacent Colombian Andes, and from these 68 species, 58 endemic species belong to four families (Bromeliaceae, Orchidaceae, Poaceae and Cyperaceae). A characterization of the lower limit of the Venezuelan paramos based on the main genera of flowering plants present in the catalog (parts I y II) is also proposed.
    Acta Botanica Venezuelica 01/2006; 29(1):89-134.