Browsing by Title Artículos de revistas
Now showing items 135-154 of 208
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(BLACKWELL, 2006-02)Little is known about how animals acquire and use prior information, particularly for Bayesian patch assessment strategies. Because different patch assessment strategies rely upon distinct capabilities to obtain information, ...
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(Royal Soc., 2015)Orchids are the most diverse family of angiosperms, with over 25 000 species, more than mammals, birds and reptiles combined. Tests of hypotheses to account for such diversity have been stymied by the lack of a fully ...
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(BLACKWELL, 2006-05)Understanding how animals interact with their environment is critical for evaluating, mitigating and coping with anthropogenic alteration of Earth's biosphere. Researchers have attempted to understand some aspects of these ...
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(BIRKHAUSER VERLAG AG, 2006-09)The plant apparency hypothesis predicts that apparent plants invest in broadly effective defences such as tannins while unapparent plants invest in specific toxins such as alkaloids. The stress hypothesis states that plants ...
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(2010)The effect of colonization on the distribution of genetic diversity within and among populations in relation to species characteristics remains an open empirical question. The objective of this study was to contrast genetic ...
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(NATL ACAD SCIENCES, 2007-12-11)A large fraction of the vital groundwater in the Atacama Desert of northern Chile is likely composed of "fossil" or "ancient" reserves that receive little or no recharge in today's hyperarid climate. Here, we present ...
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(Springer, 2015)Seagrasses play important ecological roles in shallow coastal ecosystems from tropical to sub-polar seas. Ruppia filifolia (Phil.) Skottsberg is the seagrass with the world's southernmost distribution but with virtually ...
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(Elsevier, 2015)Engineered tissues are highly limited by poor vascularization in vivo, leading to hypoxia. In order to overcome this challenge, we propose the use of photosynthetic biomaterials to provide oxygen. Since photosynthesis is ...
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(Public Library Science, 2015)Some epiphytic Hymenophyllaceae are restricted to lower parts of the host (<60 cm; 10-100 mu mol photons m(-2) s(-1)) in a secondary forest of Southern Chile; other species occupy the whole host height (>= 10 m; max PPFD ...
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(SOCIEDAD BIOLGIA CHILE, 2006-03)Photosynthesis of Colobanthus quitensis and mesoclimatic conditions of air temperature and light intensity during the growing season were investigated at 2,650 in ill the central Chilean Andes. Oil three typical days of ...
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(UNIV CHICAGO PRESS, 2008-04)The endemic southern South American genus Hamadryas (Ranunculaceae), consisting of five species, has been regarded as closely related to or part of Ranunculus s.l. (tribe Ranunculeae) based on morphological observations. ...
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(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2006-12)Penalized likelihood analysis of previously published chloroplast DNA (cpDNA) ndhF sequences suggests that the central-southern Andean genus Chaetanthera diverged ca. 16.5 million years (my) ago, well before the uplift of ...
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(PERGAMON-ELSEVIER, 2011-01)Endemic to Antarctic ecosystems, the limpet Nacella (Patinigera) concinna (Strebel, 1908) is an abundant and dominant marine benthic invertebrate of the intertidal and shallow subtidal zone. In order to examine the ...
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(Public Library Science, 2015)Major geologic and climatic changes during the Quaternary exerted a major role in shaping past and contemporary distribution of genetic diversity and structure of aquatic organisms in southern South America. In fact, the ...
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Phylogeography of Oligoryzomys longicaudatus (Rodentia : Sigmodontinae) in temperate South America (ALLIANCE COMMUNICATIONS GROUP DIVISION ALLEN PRESS, 2005-02)Phylogeographic relationships were evaluated at the intraspecific level using nucleotide sequence data from the mitochondrial cytochrome b gene of representative specimens of "colilargo" (Oligoryzomys longicaudatus) from ...
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(2006)Se presentan 61 nuevos registros de plantas introducidas para el Parque Nacional Torres del Paine (49°21’-51°08’S y 73°07’-74°52’O), región de Magallanes, con una superficie de 181.414 ha. Se encontraron 85 ...
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(JOHN WILEY & SONS LTD, 2005-07)Precipitation in northern Chile is controlled by two great wind belts-the southern westerlies over the southern Atacama and points south (>24 degrees S) and the tropical easterlies over the northern and central Atacama ...
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(INST ARCTIC ALPINE RES, 2006-11)Low temperatures, short growing seasons, and strong winds, which constrain the abundance and activity of insect pollinators, characterize alpine ecosystems. In northern hemisphere alpine environments, the reproductive ...
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(Wiley & Sons, 2015)We present a 16 000-year vegetation and climate reconstruction from pollen and plant macrofossil records obtained at a small alpine lake in South Island, New Zealand (41 degrees S). The expansion of lowland forest taxa ...
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(Frontiersin Plant Science, 2015)Polyols are enzymatically-produced plant compounds which can act as compatible solutes during periods of abiotic stress. Nicotinamide adenine dinucleotide+-dependent SORBITOL DEHYDROGENASE (SDH, E. C. 1.1.1.14) from ...
