Plants and biological soil crusts modulate the dominance of N forms in a semi-arid grassland

Plants and biological soil crusts modulate the dominance of N forms in a semi-arid grassland

3 pág.- 4 figura.- 9 referencias.- Pdf original en la página web de uno de los autores https://maestrelab.com/wp-content/uploads/2015/10/SBB2010b.pdf

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Main Authors: Delgado-Baquerizo, Manuel, Castillo-Monroy, Andrea P., Maestre, Fernando T., Gallardo, Antonio
Other Authors: Ministerio de Ciencia e Innovación (España)
Format: artículo biblioteca
Language:English
Published: Elsevier 2010-02
Subjects:Dissolved organic nitrogen, Nitrate, Semiarid ecosystem, Biological soil crusts,
Online Access:http://hdl.handle.net/10261/340721
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spelling dig-irnas-es-10261-3407212023-12-15T09:16:58Z Plants and biological soil crusts modulate the dominance of N forms in a semi-arid grassland Delgado-Baquerizo, Manuel Castillo-Monroy, Andrea P. Maestre, Fernando T. Gallardo, Antonio Ministerio de Ciencia e Innovación (España) European Commission Fundación BBVA Delgado-Baquerizo, Manuel [0000-0002-6499-576X] Maestre, Fernando T. [0000-0002-7434-4856] Gallardo, Antonio [0000-0002-2674-4265] Dissolved organic nitrogen Nitrate Semiarid ecosystem Biological soil crusts 3 pág.- 4 figura.- 9 referencias.- Pdf original en la página web de uno de los autores https://maestrelab.com/wp-content/uploads/2015/10/SBB2010b.pdf It has been suggested that the dominance of N forms should shift from dissolved organic nitrogen (DON) to nitrate along a gradient of increasing N availability. We aimed to apply this model at a local scale within a semi-arid ecosystem showing a high spatial heterogeneity in the distribution of vegetation and soil resources. By doing this, we seek a better understanding of the N cycling in spatially heterogeneous ecosystems. We took soil samples from the three major sources of spatial heterogeneity: the grass Stipa tenacíssima, the N-fixing shrub Retama sphaerocarpa, and open areas. We also sampled the biological soil crust (BSC) located in the latter areas as another source of spatial heterogeneity. BSC microsites were classified by four levels of soil coverage, ranging from high coverage (66%) to bare soil. The proportion of nitrate, ammonium and DON was determined in all microsites. DON was the dominant N form for open areas, while nitrate was dominant under the canopy of Retama; these microsites contained the lowest and highest N availability, respectively. Under BSC, DON was the dominant N form. We found high temporal variability in the dominance of N forms for all microsites. Our results suggest that the biome-derived model of Schimel and Bennett (2004) explaining N form dominance across N availability gradients may be extended to local gradients. F.T.M. was supported by a “Ramón y Cajal” contract from the Spanish MICINN (co-funded by the European Social Fund). This research was funded by grants from the British Ecological Society (ECPG 231/607), the BBVA Foundation (BIOCON06/105), and the MICINN (CGL2008-00986-E/BOS). Peer reviewed 2023-12-15T09:16:58Z 2023-12-15T09:16:58Z 2010-02 artículo Soil Biology and Biochemistry 42(2): 376-378 (2010) 0038-0717 http://hdl.handle.net/10261/340721 10.1016/j.soilbio.2009.11.003 1879-3428 en http://hdl.handle.net/ No none Elsevier
institution IRNAS ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-irnas-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IRNAS España
language English
topic Dissolved organic nitrogen
Nitrate
Semiarid ecosystem
Biological soil crusts
Dissolved organic nitrogen
Nitrate
Semiarid ecosystem
Biological soil crusts
spellingShingle Dissolved organic nitrogen
Nitrate
Semiarid ecosystem
Biological soil crusts
Dissolved organic nitrogen
Nitrate
Semiarid ecosystem
Biological soil crusts
Delgado-Baquerizo, Manuel
Castillo-Monroy, Andrea P.
Maestre, Fernando T.
Gallardo, Antonio
Plants and biological soil crusts modulate the dominance of N forms in a semi-arid grassland
description 3 pág.- 4 figura.- 9 referencias.- Pdf original en la página web de uno de los autores https://maestrelab.com/wp-content/uploads/2015/10/SBB2010b.pdf
author2 Ministerio de Ciencia e Innovación (España)
author_facet Ministerio de Ciencia e Innovación (España)
Delgado-Baquerizo, Manuel
Castillo-Monroy, Andrea P.
Maestre, Fernando T.
Gallardo, Antonio
format artículo
topic_facet Dissolved organic nitrogen
Nitrate
Semiarid ecosystem
Biological soil crusts
author Delgado-Baquerizo, Manuel
Castillo-Monroy, Andrea P.
Maestre, Fernando T.
Gallardo, Antonio
author_sort Delgado-Baquerizo, Manuel
title Plants and biological soil crusts modulate the dominance of N forms in a semi-arid grassland
title_short Plants and biological soil crusts modulate the dominance of N forms in a semi-arid grassland
title_full Plants and biological soil crusts modulate the dominance of N forms in a semi-arid grassland
title_fullStr Plants and biological soil crusts modulate the dominance of N forms in a semi-arid grassland
title_full_unstemmed Plants and biological soil crusts modulate the dominance of N forms in a semi-arid grassland
title_sort plants and biological soil crusts modulate the dominance of n forms in a semi-arid grassland
publisher Elsevier
publishDate 2010-02
url http://hdl.handle.net/10261/340721
work_keys_str_mv AT delgadobaquerizomanuel plantsandbiologicalsoilcrustsmodulatethedominanceofnformsinasemiaridgrassland
AT castillomonroyandreap plantsandbiologicalsoilcrustsmodulatethedominanceofnformsinasemiaridgrassland
AT maestrefernandot plantsandbiologicalsoilcrustsmodulatethedominanceofnformsinasemiaridgrassland
AT gallardoantonio plantsandbiologicalsoilcrustsmodulatethedominanceofnformsinasemiaridgrassland
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