Energy, ecology and the distribution of microbial life

Jennifer Macalady, Trinity L. Hamilton, Christen L. Grettenberger, Daniel S. Jones, Leah E. Tsao, William D. Burgos

Research output: Contribution to journalReview article

9 Citations (Scopus)

Abstract

Mechanisms that govern the coexistence of multiple biological species have been studied intensively by ecologists since the turn of the nineteenth century. Microbial ecologists in the meantime have faced many fundamental challenges, such as the lack of an ecologically coherent species definition, lack of adequate methods for evaluating population sizes and community composition in nature, and enormous taxonomic and functional diversity. The accessibility of powerful, culture-independent molecular microbiology methods offers an opportunity to close the gap between microbial science and the main stream of ecological theory, with the promise of new insights and tools needed to meet the grand challenges humans face as planetary engineers and galactic explorers. We focus specifically on resources related to energy metabolism because of their direct links to elemental cycling in the Earth's history, engineering applications and astrobiology. To what extent does the availability of energy resources structure microbial communities in nature? Our recent work on sulfur-and iron-oxidizing autotrophs suggests that apparently subtle variations in the concentration ratios of external electron donors and acceptors select for different microbial populations. We show that quantitative knowledge of microbial energy niches (population-specific patterns of energy resource use) can be used to predict variations in the abundance of specific taxa in microbial communities. Furthermore, we propose that resource ratio theory applied to micro-organisms will provide a useful framework for identifying how environmental communities are organized in space and time.

Original languageEnglish (US)
JournalPhilosophical Transactions of the Royal Society B: Biological Sciences
Volume368
Issue number1622
DOIs
StatePublished - Jul 19 2013

Fingerprint

energy resources
Energy resources
Ecology
ecologists
microbial communities
Exobiology
Astrobiology
ecology
Microbiology
energy
functional diversity
autotrophs
Population Density
microbiology
Sulfur
engineers
energy metabolism
space and time
Energy Metabolism
Population

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Macalady, Jennifer ; Hamilton, Trinity L. ; Grettenberger, Christen L. ; Jones, Daniel S. ; Tsao, Leah E. ; Burgos, William D. / Energy, ecology and the distribution of microbial life. In: Philosophical Transactions of the Royal Society B: Biological Sciences. 2013 ; Vol. 368, No. 1622.
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Energy, ecology and the distribution of microbial life. / Macalady, Jennifer; Hamilton, Trinity L.; Grettenberger, Christen L.; Jones, Daniel S.; Tsao, Leah E.; Burgos, William D.

In: Philosophical Transactions of the Royal Society B: Biological Sciences, Vol. 368, No. 1622, 19.07.2013.

Research output: Contribution to journalReview article

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