Mitigation of environmental extremes as a possible indicator of extended habitat sustainability for lakes on early Mars

  title={Mitigation of environmental extremes as a possible indicator of extended habitat sustainability for lakes on early Mars},
  author={Nathalie A. Cabrol and Edmond Grin and Andrew N. Hock},
  booktitle={SPIE Optical Engineering + Applications},
The impact of individual extremes on life, such as UV radiation (UVR), temperatures, and salinity is well documented. However, their combined effect in nature is not well-understood while it is a fundamental issue controlling the evolution of habitat sustainability within individual bodies of water. Environmental variables combine in the Bolivian Altiplano to produce some of the highest, least explored and most poorly understood lakes on Earth. Their physical environment of thin atmosphere… 

The High‐Lakes Project

[1] The High Lakes Project is a multidisciplinary astrobiological investigation studying high-altitude lakes between 4200 m and 6000 m elevation in the Central Andes of Bolivia and Chile. Its primary

Modern Microbial Mats and Endoevaporite Systems in Andean Lakes: A General Approach

Puna wetlands and salars are a unique extreme environment all over the world, since their locations are in high-altitude saline deserts, largely influenced by volcanic activity. Ultraviolet

The Coevolution of Life and Environment on Mars: An Ecosystem Perspective on the Robotic Exploration of Biosignatures

The focus is shifted from planetary-scale habitability to the prospect of habitats, microbial ecotones, pathways to biological dispersal, biomass repositories, and their meaning for exploration, and the importance of starting to think of early Mars as a biosphere and vigorously integrating an ecosystem approach to landing site selection and exploration is demonstrated.



Evolution of Aqueous Habitat and Life in High-Altitude Lakes During Rapid Climate Change: Astrobiological Methods and Geo and Biosignatures

Introduction: A 100 km 2 field of fossil microbialites surrounds the terraces of a high-altitude (4,500 m) altiplanic paleolake in South Bolivia. The paleolake reached its peak volume at the end of

A model for the hydrologic and climatic behavior of water on Mars

Past studies of the climatic behavior of water on Mars have universally assumed that the atmosphere is the sole pathway available for volatile exchange between the planet's crustal and polar

Tolerance limits of methanogenic life in terrestrial permafrost

The borders of growth influenced by desiccation, tempera-ture extremes, radiation and high salt concentra-tion were analyzed for the organisms in pure cultures obtained from permafrost soils as well as in their natural environment of Siberian per-mafrost, where they showed better adaptation to high salt concentration at temperatures of 4°C.

Antarctic paleolake sediments and the search for extinct life on Mars

Evidence of lakes in Mars history is substantial. The proposed similarities between the ancient Martian environment and certain modern environments on Earth have led exobiologists to study antarctic

The impact crater as a habitat: effects of impact processing of target materials.

Although there are no recent craters with which to study immediate post-impact colonization, these data yield insights into generalized mechanisms of how impact processing can influence post- impact succession.

Temperature‐dependent ultraviolet responses in zooplankton: Implications of climate change

Climate warming and stratospheric ozone depletion increase temperature and ultraviolet (UV) in mid‐ to highlatitude ecosystems; however, little is known about the interactive effects of temperature

Mid-Holocene climate in the south-central Andes: humid or dry?

It is argued that wet conditions result in high-er river discharge and erosion, whereas accu-mulation of fine materials in a steep valleyrequires overall decreased river flow and a low-energy environment.

Saline Lakes

  • H.Dumont
  • Environmental Science, Geography
    Developments in Hydrobiology
  • 1990
Saline playa lakes represent major geomorphic and hydrologic components of internal drainage basins in the arid to semiarid interior of Australia. These lakes mark the outcrop areas of regional