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dc.contributor.author
Lavelle, Patrick
dc.contributor.author
Spain, Alister
dc.contributor.author
Fonte, Steven
dc.contributor.author
Bedano, José Camilo
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dc.contributor.author
Blanchart, Eric
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Galindo, Victor
dc.contributor.author
Grimaldi, Michel
dc.contributor.author
Jimenez, Juan Jose
dc.contributor.author
Velasquez, Elena
dc.contributor.author
Zangerlé, Anne
dc.date.available
2021-07-14T12:06:28Z
dc.date.issued
2020-05
dc.identifier.citation
Lavelle, Patrick; Spain, Alister; Fonte, Steven; Bedano, José Camilo; Blanchart, Eric; et al.; Soil aggregation, ecosystem engineers and the C cycle; Gauthier-Villars/Editions Elsevier; Acta Oecologica; 105; 5-2020; 1-12
dc.identifier.issn
1146-609X
dc.identifier.uri
http://hdl.handle.net/11336/136058
dc.description.abstract
Soil aggregation and its effects on soil C storage have been addressed in thousands of research articles over the last 40 years. Research has been mostly focused on the resistance of aggregates to mechanical disruption and the role of organic matter in aggregate stabilization. On the other hand, relatively little attention has been paid to identifying the microbial, plant root and macro-invertebrate actors and physical processes that continuously create and destroy aggregates. The sum and dynamics of these processes determines the ability of soils to store and conserve C. Understanding the interactions between aggregation dynamics and C transformations in soils therefore requires a precise identification of the agents that produce aggregates and knowledge of the rates of formation and persistence in the pools thus identified. We propose to separate macro-aggregated components of different, physicogenic and biogenic origins from non-macro-aggregated soil on a morphological basis, using a simple visual technique. The specific biological or physico-chemical agent which produced each individual macro-aggregate can then be determined using Near Infrared Spectroscopy (NIRS). A general description of the distribution and quality of organic matter among the different groups of macro-aggregates can be made. Simple soil re-aggregation or dis-aggregation tests conducted in field conditions further measure the production of different macro-aggregates with time and their mean residence times in the studied soil. Respirometry measurements on each recognized category of macro-aggregates evaluate the respective C losses through respiration. The methods described here will allow the dominant pathways of C flow at a given site to be characterized and possible management options to increase C storage identified. We finally discuss the different assumptions made to build this simple model and offer ways to test the methodology under field conditions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Gauthier-Villars/Editions Elsevier
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
C CYCLING
dc.subject
SOIL AGGREGATION
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SOIL ORGANISMS
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Soil aggregation, ecosystem engineers and the C cycle
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-04-23T16:37:50Z
dc.journal.volume
105
dc.journal.pagination
1-12
dc.journal.pais
Francia
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dc.description.fil
Fil: Lavelle, Patrick. Institut D'ecologie Et Des Sciences de L'environnement de Paris; Francia. Universite de Paris 1 - Pantheon Sorbonne.; Francia
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Fil: Spain, Alister. University of Western Australia; Australia
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Fil: Fonte, Steven. State University of Colorado - Fort Collins; Estados Unidos
dc.description.fil
Fil: Bedano, José Camilo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente; Argentina
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Fil: Blanchart, Eric. Ecologie Fonctionnelle Et Biogéochimie Des Sols Et Agrosystèmes; Francia
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Fil: Galindo, Victor. Universidad del Valle; Colombia
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Fil: Grimaldi, Michel. Institut D'ecologie Et Des Sciences de L'environnement de Paris; Francia
dc.description.fil
Fil: Jimenez, Juan Jose. Instituto Pirenaico de Ecología; España
dc.description.fil
Fil: Velasquez, Elena. Universidad Nacional de Colombia; Colombia
dc.description.fil
Fil: Zangerlé, Anne. Ministry of Agriculture, Viticulture and Rural Development; Luxemburgo
dc.journal.title
Acta Oecologica
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.actao.2020.103561
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1146609X20300539
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