Instituto de Ecología y Biodiversidad (IEB): Recent submissions
Now showing items 201-220 of 225
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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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(SOCIEDAD BIOLOGIA CHILE, 2006-09)It has been hypothesized that species belonging to the Sturnidae-Muscicapidae lineage, despite having generalist diets comprising fruits with sugars of diverse kinds, do not express intestinal sucrase. In order to increase ...
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(BLACKWELL, 2007-03)While it is a truism that species rarity is non-randomly distributed across regions, habitats, and taxa, there is little consensus on which factors are the best predictors of low abundances and restricted geographical ...
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(SPRINGER, 2006-01)Carbon-based secondary compounds (CBSCs), such as phenols or tannins, have been considered as one of the most important and general chemical barriers of woody plants against a diverse array of herbivores. Herbivory has ...
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(BLACKWELL, 2006-01)In alpine habitats, positive interactions among plants tend to increase with elevation as a result of altitudinal increase in environmental harshness. However, in mountains located in arid zones, lower elevations are also ...
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(INST ARCTIC ALPINE RES, UNIV COLORADO, 2007-05)Cushion plants are one of the most common growth forms in alpine habitats. Their low stature, dense canopy, and compact form allow them to decouple their microclimate from the surrounding environment, mitigating the effect ...
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(SPRINGER, 2007-05)Leaf litter accumulation can have either positive, negative or neutral effects on seed germination and seedling recruitment. In montane woodlands of the Mediterranean zone of central Chile, large amounts of leaf litter ...
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(ELSEVIER, 2005-01-17)The presence of guanaco (Lama guanicoe. Muller 1776. Camelidae) in forests of Nothofagus pumilio (Poepp. et Endl.) Krasser. (lenga) in Tierra del Fuego has been associated with browsing damage in the regeneration of these ...
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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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(SPRINGER, 2007-07)El Nino Southern Oscillation (ENSO) events have profound consequences for the dynamics of terrestrial ecosystems. Since increased climate variability is expected to favour the invasive success of exotic species, we conducted ...
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(COMPANY OF BIOLOGISTS LTD, 2005-05)Scaling relationships (where body size features as the independent variable) and power-law distributions are commonly reported in ecological systems. In this review we analyze scaling relationships related to energy ...
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(ROYAL SOCIETY, 2007-02-28)The perspective of 'biocomplexity' in the form of 'coupled natural and human systems' represents a resource for the future conservation of biodiversity hotspots in three direct ways: ( i) modelling the impact on biodiversity ...
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(GEOLOGICAL SOC AMER, 2007-11)This study uses stable isotope variation within individual Mio-Pliocene paleosols to investigate subkilometer-scale phytogeography of late Miocene vegetation change in southeast Asia between ca. 8.1 and 5 Ma, a time interval ...
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(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2005-07)The most important processes shaping communities are likely to leave observable imprints on their spatial structure. The net outcome of positive and negative interactions among plants has been proposed to vary inversely ...
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(BLACKWELL, 2006-07)Ecosystem engineers are organisms able to modulate environmental forces and, hence, may change the habitat conditions for other species. In so doing, ecosystem engineers may affect both species richness and evenness of ...
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(BLACKWELL, 2007-07)1. Ecosystem engineers are organisms that change abiotic conditions in ways that affect the performance and distribution of other species, including exotics. Several mechanisms have been proposed for the successful ...
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(BLACKWELL, 2006-11)Comparative and integrative tools are of fundamental value in ecology for understanding outcomes of biological processes, and making generalizations and predictions. Although ecosystem engineering has been shown to play a ...
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(UNIV CHICAGO PRESS, 2007-01)The effects of energy on food web structure have been debated for at least 80 years. Nevertheless, the empirical evidence is meager, especially from terrestrial ecosystems. We analyzed long-term temporal variation in food ...
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(SPRINGER, 2006-09)Pristine wilderness is a scarce global resource, but exotic species are so common that they constitute a principal component of worldwide ecological change. The relationship between these two topics, invasion and remoteness, ...
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(ELSEVIER, 2006-04)North American beavers (Castor canadensis) were introduced into southern South America in 1946. Since that time, their populations have greatly expanded. In their native range, beavers shape riparian ecosystems by selectively ...