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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/17030
Título

Is the availability of different nutrients a critical factor for the impact of bacteria on subterraneous carbon budgets?

AutorPortillo Guisado, María del Carmen ; Porca, Estefanía ; Cuezva, Soledad ; Cañaveras, Juan Carlos ; Sánchez Moral, Sergio ; González Grau, Juan Miguel
Palabras claveNutrient
Carbonate precipitation
Carbon sink
Carbon budget
Subterraneous environments
Fecha de publicaciónsep-2009
EditorSpringer
CitaciónNaturwissenschaften 96(9): 1035-1042(2009)
ResumenBacteria thriving in underground systems, such as karsts, adapt to use a variety of nutrients. Most of these nutrients derive from superficial processes. This study shows that bacteria are able to differentially induce carbonate precipitation or dissolution depending on the availability of nutrients for growth. Different bacterial strains isolated from caves, representing the most common components of these microbial communities, were cultured with different carbon and nitrogen sources (e.g., acetate, glucose, peptone, humic acids) and induced changes in pH were measured during growth. Carbonate can either precipitate or dissolve during bacterial growth. The induction of carbonate precipitates or their dissolution as a function of consumption of specific carbon sources revealed the existence of an active nutrient cycling process in karsts and links nutrients and environmental conditions to the existence of a highly significant carbon sink in subterraneous environments.
Versión del editorhttp://dx.doi.org/10.1007/s00114-009-0562-5
URIhttp://hdl.handle.net/10261/17030
DOI10.1007/s00114-009-0562-5
ISSN0028-1042 (Print)
1432-1904 (Online)
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