Cycling of carbon, sulfur, oxygen and nutrients in a microbial mat
Microbial mats are among the most productive aquatic ecosystems on Earth, yet, in many cases, the waters from which they grow are depleted in the basic nutrient elements. How, then, are nutrients cycled to allow for such high rates, and what ultimately controls these rates? To begin to address these issues, the cycling of carbon, oxygen, sulfur and nutrients has been explored over several years in Microcoleus chtholoplastes-dominated cyanobacterial mats from the hypersaline salt ponds in Guerrero Negro, Baja California Sur, Mexico (D’Amelio et al. 1989; Canfield and Des Marais 1993).
KeywordsBiomass Sulfide Manganese Propionate Respiration
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- Bebout BM (1992) Interactions of Nitrogen and Carbon Cycling in Microbial Mats and Stromatolites, PhD Diss, Univ. N. Carolina, Chapel Hill, 187 ppGoogle Scholar
- D’Amelio ED, Cohen Y, Des Marais DJ (1989) Comparative functional ultrastructure of two hypersaline submerged cyanobacterial mats: Guerrero Negro, Baja California Sur, Mexico, and Solar Lake, Sinai, Egypt. In: Cohen Y, Rosenberg E (eds) Microbial Mats, Physiological Ecology of Benthic Microbial Communities. American Society for Microbiology, Washington, pp 97–113Google Scholar
- Finster K, Bak F (1993) Complete oxidation of propionate, valerate, succinate, and other organic compounds by newly isolated types of marine, anaerobic, mesophilic, Gram negative, sulfur-reducing eubacteria (1993) Appl Envir Microbiol 59: 1452–1460Google Scholar
- Thamdrup B, Finster K, Hansen JW, Bak F (1993) Bacterial disproportionation of elemental sulfur coupled to chemical reduction of iron or manganese. Appl Envir Microbiol 59: 101–108Google Scholar