Open Access
Decoupling of soil nutrient cycles as a function of
Manuel Delgado-Baquerizo,Fernando T. Maestre,Antonio Gallardo,Matthew A. Bowker,Matthew D. Wallenstein,José L. Quero,Victoria Ochoa,Beatriz Gozalo,Miguel García-Gómez,Santiago Soliveres,Pablo García-Palacios,Miguel Berdugo,Enrique Valencia,Cristina Escolar,Tulio Arredondo,Claudia Barraza-Zepeda,Donaldo Bran,José A. Carreira,Mohamed Chaieb,Abel A. Conceiça˜o,Mchich Derak,David J. Eldridge,Adrián Escudero,Carlos I. Espinosa,Juan José Gaitán,M. Gabriel Gatica,Susana Gómez-González,Elizabeth Guzman,Julio R. Gutiérrez,Adriana Florentino,E.N. Hepper,Rosa M. Hernández,Elisabeth Huber-Sannwald,Mohammad Jankju,Jushan Liu,Rebecca L. Mau,Maria N. Miriti,Jorge Monerris,Kamal Naseri,Zouhaier Noumi,Vicente Polo,Aníbal Prina,Eduardo Pucheta,Elizabeth Ramírez,David A. Ramırez Collantes,R. L. Romão,Matthew Tighe,Duilio Torres,Cristian Torres-Díaz,Eugene D. Ungar,James Val,Wanyoike Wamiti,Deli Wang,Eli Zaady +53 more
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TLDR
In this paper, the authors evaluate how aridity affects the balance between carbon (C), nitrogen (N) and phosphorus (P) in soils collected from 224 dryland sites from all continents except Antarctica and find a negative effect of aridity on the concentration of soil organic C and total N, but a positive effect on inorganic P.Abstract:
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.read more
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DissertationDOI
Exploring the possibilities of parsimonious nitrogen modelling in different ecosystems
TL;DR: In this paper, two parsimonious nitrogen models have been developed and implemented in two different data availability scenarios, one in a semi-arid natural forest ecosystem and the other in an anthropogenic agricultural ecosystem.
Dissertation
Modelling of the topsoil organic carbon content by analysing the potential of spectroscopic techniques for digital soil mapping
TL;DR: In this article, the authors explored the capacity of spectroscopy for map soil organic carbon content at regional scale using topsoil samples from Galicia (NW-Spain) and developed a spatially non-stationary approach that allows mapping soil organic content and also identifying the factors more relevant for its accumulation in Europe.
References
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Journal ArticleDOI
Surface indicators are correlated with soil multifunctionality in global drylands
David J. Eldridge,Manuel Delgado-Baquerizo,José L. Quero,Victoria Ochoa,Victoria Ochoa,Beatriz Gozalo,Beatriz Gozalo,Pablo García-Palacios,Cristina Escolar,Miguel García-Gómez,Aníbal Prina,Mathew A. Bowker,Donaldo Bran,Ignacio Castro,Alex P. Cea,Mchich Derak,Carlos I. Espinosa,Adriana Florentino,Juan José Gaitán,Juan José Gaitán,Juan José Gaitán,Gabriel Gatica,Susana Gómez-González,Wahida Ghiloufi,Julio R. Gutiérrez,Julio R. Gutiérrez,Elizabeth Gusmán-Montalván,Rosa M. Hernández,Frederic Mendes Hughes,Walter Alejandro Muiño,Jorge Monerris,Abelardo Ospina,David A. Ramírez,Yanina A. Ribas-Fernández,R. L. Romão,Cristian Torres-Díaz,Terrance B. Koen,Fernando T. Maestre,Fernando T. Maestre +38 more
TL;DR: In this paper, the authors used the European Research Council ERC Grant agreement 242658 (BIOCOM) to support the work of D.D.-B.G. and F.R.
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The late Pleistocene to Holocene palaeogeographic evolution of the Porto Conte area: Clues for a better understanding of human colonization of Sardinia and faunal dynamics during the last 30 ka
M. R. Palombo,Fabrizio Antonioli,V. Lo Presti,Marcello A. Mannino,Rita Teresa Melis,Paolo E. Orrù,Paolo Stocchi,Sahra Talamo,Gianluca Quarta,Lucio Calcagnile,Giacomo Deiana,S. Altamura +11 more
TL;DR: In this article, the authors combine radiometric dating, field evidence of relative sea-level changes (RSL), sea level and glacial-isostatic adjustment modelling, stratigraphical, palaeontological, palAEoecological and isotope analyses that were performed on sites and finds from the Porto Conte and Capo Caccia area (Alghero, NW Sardinia).
Journal ArticleDOI
Long-term effects of wildfire on available soil nutrient composition and stoichiometry in a Chinese boreal forest.
TL;DR: Results showed immediate wildfire effects on soil nutrient availability and composition were strongly related to fire severity, but such effects could be subdued by soil environment and topographical variations over time.
Journal ArticleDOI
Water, nitrogen and phosphorus use efficiencies of four tree species in response to variable water and nutrient supply
Feike A. Dijkstra,Yolima Carrillo,Michael J. Aspinwall,Chelsea Maier,Alberto Canarini,Hero Tahaei,Brendan Choat,David T. Tissue +7 more
TL;DR: In this article, the authors examined if a similar trade-off can occur between plant water use efficiency and phosphorus use efficiency (PUE) and if changes in NUE and PUE in response to water and nutrient supply can be related to microbial N and P immobilisation.
Journal ArticleDOI
The Role of Stress Proteins in Haloarchaea and Their Adaptive Response to Environmental Shifts
TL;DR: In this review, all the mechanisms to cope with stress response by haloarchaea are discussed from a global perspective, specifically focusing on the role played by universal stress proteins.