The Cuatro Ciénegas Basin in Coahuila, Mexico: An astrobiological Precambrian Park

Valeria Souza, Janet L. Siefert, Ana E. Escalante, James Elser, Luis E. Eguiarte

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The Cuatro Ciénegas Basin (CCB) is a rare oasis in the Chihuahuan Desert in the state of Coahuila, Mexico. It has a biological endemism similar to that of the Galapagos Islands, and its spring-fed ecosystems have very low nutrient content (nitrogen or phosphorous) and are dominated by diverse microbialites. Thus, it has proven to be a distinctive opportunity for the field of astrobiology, as the CCB can be seen as a proxy for an earlier time in Earth's history, in particular the late Precambrian, the biological frontier when prokaryotic life yielded at least partial dominance to eukaryotes and multicellular life. It is a kind of ecological time machine that provides abundant opportunities for collaborative investigations by geochemists, geologists, ecologists, and population biologists in the study of the evolutionary processes that structured Earth-based life, especially in the microbial realm. The CCB is an object of investigation for the identification of biosignatures of past and present biota that can be used in our search for extraterrestrial life. In this review, we summarize CCB research efforts that began with microbial ecology and population biology projects and have since been expanded into broader efforts that involve biogeochemistry, comparative genomics, and assessments of biosignatures. We also propose that, in the future, the CCB is sanctioned as a "Precambrian Park" for astrobiology.

Original languageEnglish (US)
Pages (from-to)641-647
Number of pages7
JournalAstrobiology
Volume12
Issue number7
DOIs
StatePublished - Jul 1 2012

Fingerprint

Exobiology
Mexico
Precambrian
basins
exobiology
basin
Ecuador
Biota
Proxy
Genomics
Ecology
Eukaryota
Population
extraterrestrial life
biogeochemistry
Ecosystem
oases
eukaryotes
Nitrogen
Chihuahuan Desert

Keywords

  • Early Earth
  • Extremophilic microorganisms
  • Microbial ecology
  • Microbial mats
  • Stromatolites

ASJC Scopus subject areas

  • Space and Planetary Science
  • Agricultural and Biological Sciences (miscellaneous)

Cite this

The Cuatro Ciénegas Basin in Coahuila, Mexico : An astrobiological Precambrian Park. / Souza, Valeria; Siefert, Janet L.; Escalante, Ana E.; Elser, James; Eguiarte, Luis E.

In: Astrobiology, Vol. 12, No. 7, 01.07.2012, p. 641-647.

Research output: Contribution to journalArticle

Souza, Valeria ; Siefert, Janet L. ; Escalante, Ana E. ; Elser, James ; Eguiarte, Luis E. / The Cuatro Ciénegas Basin in Coahuila, Mexico : An astrobiological Precambrian Park. In: Astrobiology. 2012 ; Vol. 12, No. 7. pp. 641-647.
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