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Ecological restoration is the deliberate action that speeds recovery from a degraded system by direct or indirect human intervention. Xerophytic formations are among the most degraded ecosystems where low water availability makes reintroduction plans unsuccessful and extremely expensive. Roots in...

La restauración ecológica es la actividad deliberada que acelera la recuperación de un sistema degradado por acción directa o indirecta de la intervención humana. Las zonas xerofíticas están entre los ecosistemas más degradados donde la baja disponibilidad hídrica hace que los planes de reintrodu...


Antarctica is the Earth’s largest environmental library for ice cores. Examples of the scientific findings of the 21-nation consortium called the International Trans Antarctic Scientific Expedition (ITASE) under the auspices of the Scientific Committee for Antarctic Research (SCAR) are presented ...

La Antártica es la biblioteca medioambiental de testigos de hielo más grande del planeta. Algunos ejemplos de los hallazgos científicos del consorcio de 21 países llamado la Expedición Científica Internacional Trans Antártica (ITASE), bajo los auspicios del Comité Científico de Investigaciones An...


Background: Heat stress proteins are implicated in stabilizing and refolding denatured proteins in vertebrates and invertebrates. Members of the Hsp70 gene family comprise the cognate heat shock protein (Hsc70) and inducible heat shock protein (Hsp70). However, the cDNA sequence and the expressio...


Escherichia coli bacteria with extended-spectrum -lactamase (ESBL) type CTX-M resistance were isolated from water samples collected close to research stations in Antarctica. The isolates had blaCTX-M-1 and blaCTX-M-15 genotypes and sequence types (ST) indicative of a human-associated origin. Thi...


Background: Prevailing environmental conditions can modulate the structuring role of biotic interactions. In intertidal habitats, less stressful environmental conditions and/or higher grazer densities may allow grazing effects to be stronger in tide pools than on emergent rocks. To test this hypo...


Several bacteria that are associated with macroalgae can use phycocolloids as a carbon source. Strain INACH002, isolated from decomposing Porphyra (Rhodophyta), in King George Island, Antarctica, was screened and characterized for the ability to produce agarase and alginate-lyase enzymatic activi...


Seven species of Paratanaidae collected from the bottom of Chile Bay, Greenwich Island by the 22nd. Chilean Antarctic Expedition, and an apseudid obtained in the waters of Tierra del Fuego Island have been described and figured. Three of the Paratanaidae are known species: Nototanais antarcticus ...

En el presente trabajo se describen e ilustran siete especies de Paratanaidae colectados en los fondos de Bahía Chile, Isla Greenwich por la 22º Expedición Antártica Chilena, y un apséudido obtenido en las aguas de Tierra del Fuego. De las especies de Paratanaidae tres son conocidas: Nototanais a...


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