User profiles for Jacek Wierzchos

Jacek Wierzchos

Researcher of National Museum of Natural Sciences - CSIC, Madrid
Verified email at mncn.csic.es
Cited by 7012

Endolithic cyanobacteria in halite rocks from the hyperarid core of the Atacama Desert

J Wierzchos, C Ascaso, CP McKay - Astrobiology, 2006 - liebertpub.com
In the driest parts of the Atacama Desert there are no visible life forms on soil or rock surfaces.
The soil in this region contains only minute traces of bacteria distributed in patches, and …

Facilitation of endolithic microbial survival in the hyperarid core of the Atacama Desert by mineral deliquescence

…, H Olivares, CP McKay, J Wierzchos - Journal of …, 2008 - Wiley Online Library
The hyperarid core of the Atacama Desert is considered the dry limit for life on Earth. Soils in
this region have very low abundance of heterotrophic bacteria and are practically barren of …

Astrobiology through the ages of Mars: the study of terrestrial analogues to understand the habitability of Mars

…, J Zavaleta, ER Uceda, C Stoker, J Wierzchos… - Astrobiology, 2010 - liebertpub.com
Mars has undergone three main climatic stages throughout its geological history, beginning
with a water-rich epoch, followed by a cold and semi-arid era, and transitioning into present-…

Hygroscopic salts and the potential for life on Mars

…, D Moehlmann, CP McKay, C Ascaso, J Wierzchos - Astrobiology, 2010 - liebertpub.com
Hygroscopic salts have been detected in soils in the northern latitudes of Mars, and widespread
chloride-bearing evaporitic deposits have been detected in the southern highlands. The …

Microorganisms in desert rocks: the edge of life on Earth

J Wierzchos, A Ríos, C Ascaso - 2012 - digital.csic.es
This article reviews current knowledge on microbial communities inhabiting endolithic habitats
in the arid and hyper-arid regions of our planet. In these extremely dry environments, the …

Microstructural characterization of cyanobacterial mats from the McMurdo Ice Shelf, Antarctica

A de Los Ríos, C Ascaso, J Wierzchos… - Applied and …, 2004 - Am Soc Microbiol
The three-dimensional structures of two types of cyanobacterium-dominated microbial mats
from meltwater ponds on the McMurdo Ice Shelf were as determined by using a broad suite …

Early evolution and ecology of camouflage in insects

…, M Speranza, J Wierzchos… - Proceedings of the …, 2012 - National Acad Sciences
Taxa within diverse lineages select and transport exogenous materials for the purposes of
camouflage. This adaptive behavior also occurs in insects, most famously in green lacewing …

In situ evaluation of the biodeteriorating action of microorganisms and the effects of biocides on carbonate rock of the Jeronimos Monastery (Lisbon)

C Ascaso, J Wierzchos, V Souza-Egipsy… - International …, 2002 - Elsevier
The biodeterioration effects of microorganisms colonizing the cloister terrace wall of the
Jeronimos Monastery (Lisbon) were evaluated using several microscopy techniques that allow …

Survival of lichens and bacteria exposed to outer space conditions–results of the Lithopanspermia experiments

…, LG Sancho, G Horneck, A de los Ríos, J Wierzchos… - Icarus, 2010 - Elsevier
In the space experiments Lithopanspermia, experimental support was provided to the
likelihood of the lithopanspermia concept that considers a viable transport of microorganisms …

[HTML][HTML] Adaptation strategies of endolithic chlorophototrophs to survive the hyperarid and extreme solar radiation environment of the Atacama Desert

J Wierzchos, J DiRuggiero, P Vítek, O Artieda… - Frontiers in …, 2015 - frontiersin.org
The Atacama Desert, northern Chile, is one of the driest deserts on Earth and, as such, a
natural laboratory to explore the limits of life and the strategies evolved by microorganisms to …