Decoupling of soil nutrient cycles as a function of aridity in global drylands

Delgado Baquerizo, Manuel; Maestre, Fernando T.; Gallardo, Antonio; Bowker, Mathew A.; Wallenstein, Matthew D.; Quero, Jose L; Ochoa, Victoria; Gozalo, Beatriz; García Gómez, Miguel; Soliveres, Santiago; García Palacios, Pablo; Berdugo, Miguel; Valencia, Enrique; Escolar, Cristina; Arredondo, Tulio; Barraza Zepeda, Claudia; Bran, Donaldo; Carreira, José Antonio; Chaieb, Mohamed; Conceiçao, Abel A.; Derak, Mchich; Eldridge, David J.; Escudero, Adrián; Espinosa, Carlos Ivan; Gaitán, Juan; Gatica, M. Gabriel; Gómez González, Susana; Guzman, Elizabeth; Gutiérrez, Julio R.; Florentino, Adriana; Hepper, Estela; Hernández, Rosa M.; Huber Sannwald, Elisabeth; Jankju, Mohammad; Liu, Jushan; Mau, Rebecca L.; Miriti, Maria; Monerris, Jorge; Naseri, Kamal; Noumi, Zouhaier; Polo, Vicente; Prina, Aníbal; Pucheta, Eduardo; Ramírez, Elizabeth; Ramírez Collantes, David A.; Romao, Roberto L.; Tighe, Matthew; Torres, Duilio; Torres Díaz, Cristian; Ungar, Eugene D.; Val, James; Wamiti, Wanyoike; Wang, Deli y Zaady, Eli (2013). Decoupling of soil nutrient cycles as a function of aridity in global drylands. "Nature", v. 502 (n. 7473); pp. 672-676. ISSN 0028-0836. https://doi.org/10.1038/nature12670.

Descripción

Título: Decoupling of soil nutrient cycles as a function of aridity in global drylands
Autor/es:
  • Delgado Baquerizo, Manuel
  • Maestre, Fernando T.
  • Gallardo, Antonio
  • Bowker, Mathew A.
  • Wallenstein, Matthew D.
  • Quero, Jose L
  • Ochoa, Victoria
  • Gozalo, Beatriz
  • García Gómez, Miguel
  • Soliveres, Santiago
  • García Palacios, Pablo
  • Berdugo, Miguel
  • Valencia, Enrique
  • Escolar, Cristina
  • Arredondo, Tulio
  • Barraza Zepeda, Claudia
  • Bran, Donaldo
  • Carreira, José Antonio
  • Chaieb, Mohamed
  • Conceiçao, Abel A.
  • Derak, Mchich
  • Eldridge, David J.
  • Escudero, Adrián
  • Espinosa, Carlos Ivan
  • Gaitán, Juan
  • Gatica, M. Gabriel
  • Gómez González, Susana
  • Guzman, Elizabeth
  • Gutiérrez, Julio R.
  • Florentino, Adriana
  • Hepper, Estela
  • Hernández, Rosa M.
  • Huber Sannwald, Elisabeth
  • Jankju, Mohammad
  • Liu, Jushan
  • Mau, Rebecca L.
  • Miriti, Maria
  • Monerris, Jorge
  • Naseri, Kamal
  • Noumi, Zouhaier
  • Polo, Vicente
  • Prina, Aníbal
  • Pucheta, Eduardo
  • Ramírez, Elizabeth
  • Ramírez Collantes, David A.
  • Romao, Roberto L.
  • Tighe, Matthew
  • Torres, Duilio
  • Torres Díaz, Cristian
  • Ungar, Eugene D.
  • Val, James
  • Wamiti, Wanyoike
  • Wang, Deli
  • Zaady, Eli
Tipo de Documento: Artículo
Título de Revista/Publicación: Nature
Fecha: Octubre 2013
Volumen: 502
Materias:
Palabras Clave Informales: Climate-change impacts, Biogeochemistry
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ingeniería y Morfología del Terreno
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The biogeochemical cycles of carbon (C), nitrogen (N) and phosphorus (P) are interlinked by primary production, respiration and decomposition in terrestrial ecosystems. It has been suggested that the C, N and P cycles could become uncoupled under rapid climate change because of the different degrees of control exerted on the supply of these elements by biological and geochemical processes. Climatic controls on biogeochemical cycles are particularly relevant in arid, semi-arid and dry sub-humid ecosystems (drylands) because their biological activity is mainly driven by water availability. The increase in aridity predicted for the twenty-first century in many drylands worldwide may therefore threaten the balance between these cycles, differentially affecting the availability of essential nutrients. Here we evaluate how aridity affects the balance between C, N and P in soils collected from 224 dryland sites from all continents except Antarctica. We find a negative effect of aridity on the concentration of soil organic C and total N, but a positive effect on the concentration of inorganic P. Aridity is negatively related to plant cover, which may favour the dominance of physical processes such as rock weathering, a major source of P to ecosystems, over biological processes that provide more C and N, such as litter decomposition. Our findings suggest that any predicted increase in aridity with climate change will probably reduce the concentrations of N and C in global drylands, but increase that of P. These changes would uncouple the C, N and P cycles in drylands and could negatively affect the provision of key services provided by these ecosystems.

Más información

ID de Registro: 33186
Identificador DC: http://oa.upm.es/33186/
Identificador OAI: oai:oa.upm.es:33186
Identificador DOI: 10.1038/nature12670
URL Oficial: http://www.nature.com/nature/journal/v502/n7473/full/nature12670.html
Depositado por: Memoria Investigacion
Depositado el: 03 Mar 2015 13:10
Ultima Modificación: 03 Mar 2015 13:10
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