Decomposition of European beech (Fagus sylvatica) litter : Combining quality theory and 15N labelling experiments
A multi-site and multi-age set of in situ 15N-labelled litter decomposition experiments was carried out in various European beech forests. The sites presented contrasted situations of climate and humus type that were representative of northern Europe temperate forests. 15N-labelled leaf litter was produced by urea spraying in an experimental beech plot, and was used in litter decomposition experiments over a 3-6-year period, depending on the site. Schemes of decomposition covered a wide range of situations, some of them not expected, like high decay rate on Moder humus forms or slow decomposition on Mull humus form. The objectives of this study were to determine how nitrogen release and/or incorporation rates could characterize litter decomposition dynamics. A carbon and nitrogen coupled model of decomposition based on the quality theory was used to fit the given data. High correlation coefficients and unbiased fitting were obtained both for carbon ðR2 ¼ 0:96; pp0:0001; n ¼ 392Þ and nitrogen ðR2 ¼ 0:86; pp0:0001; n ¼ 367Þ. The theoretical concept of quality was somewhat lightened and related to decomposer activity: low rates of quality decrease were associated with high decomposition rates, showing that when decomposers are sufficiently supplied with labile carbon from the humus they decompose litter more completely than when they are carbon limited. Provided that the degrading substrate stoichiometry was kept constant (i.e. C loss / N loss ratio), the same litter decomposition could be processed at different rates. Taking seasonal variations of the parameters into account is likely to improve our understanding, but further experiments at more frequent intervals are needed.
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dig-cirad-fr-5427832024-01-28T15:32:43Z http://agritrop.cirad.fr/542783/ http://agritrop.cirad.fr/542783/ Decomposition of European beech (Fagus sylvatica) litter : Combining quality theory and 15N labelling experiments. D'Annunzio Rémi, Zeller Bernd, Nicolas Manuel, Dhôte Jean-François, Saint André Laurent. 2008. Soil Biology and Biochemistry, 40 (2) : 322-333.https://doi.org/10.1016/j.soilbio.2007.08.011 <https://doi.org/10.1016/j.soilbio.2007.08.011> Decomposition of European beech (Fagus sylvatica) litter : Combining quality theory and 15N labelling experiments D'Annunzio, Rémi Zeller, Bernd Nicolas, Manuel Dhôte, Jean-François Saint André, Laurent eng 2008 Soil Biology and Biochemistry K50 - Technologie des produits forestiers U10 - Informatique, mathématiques et statistiques Fagus litière forestière biodégradation humus carbone cycle de l'azote modèle modèle de simulation facteur édaphique facteur climatique qualité expérimentation http://aims.fao.org/aos/agrovoc/c_2779 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_9261 http://aims.fao.org/aos/agrovoc/c_3693 http://aims.fao.org/aos/agrovoc/c_1301 http://aims.fao.org/aos/agrovoc/c_27938 http://aims.fao.org/aos/agrovoc/c_4881 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_15617 http://aims.fao.org/aos/agrovoc/c_29554 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_2758 Europe http://aims.fao.org/aos/agrovoc/c_2724 A multi-site and multi-age set of in situ 15N-labelled litter decomposition experiments was carried out in various European beech forests. The sites presented contrasted situations of climate and humus type that were representative of northern Europe temperate forests. 15N-labelled leaf litter was produced by urea spraying in an experimental beech plot, and was used in litter decomposition experiments over a 3-6-year period, depending on the site. Schemes of decomposition covered a wide range of situations, some of them not expected, like high decay rate on Moder humus forms or slow decomposition on Mull humus form. The objectives of this study were to determine how nitrogen release and/or incorporation rates could characterize litter decomposition dynamics. A carbon and nitrogen coupled model of decomposition based on the quality theory was used to fit the given data. High correlation coefficients and unbiased fitting were obtained both for carbon ðR2 ¼ 0:96; pp0:0001; n ¼ 392Þ and nitrogen ðR2 ¼ 0:86; pp0:0001; n ¼ 367Þ. The theoretical concept of quality was somewhat lightened and related to decomposer activity: low rates of quality decrease were associated with high decomposition rates, showing that when decomposers are sufficiently supplied with labile carbon from the humus they decompose litter more completely than when they are carbon limited. Provided that the degrading substrate stoichiometry was kept constant (i.e. C loss / N loss ratio), the same litter decomposition could be processed at different rates. Taking seasonal variations of the parameters into account is likely to improve our understanding, but further experiments at more frequent intervals are needed. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/542783/1/document_542783.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.soilbio.2007.08.011 10.1016/j.soilbio.2007.08.011 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.soilbio.2007.08.011 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.soilbio.2007.08.011 |
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K50 - Technologie des produits forestiers U10 - Informatique, mathématiques et statistiques Fagus litière forestière biodégradation humus carbone cycle de l'azote modèle modèle de simulation facteur édaphique facteur climatique qualité expérimentation http://aims.fao.org/aos/agrovoc/c_2779 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_9261 http://aims.fao.org/aos/agrovoc/c_3693 http://aims.fao.org/aos/agrovoc/c_1301 http://aims.fao.org/aos/agrovoc/c_27938 http://aims.fao.org/aos/agrovoc/c_4881 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_15617 http://aims.fao.org/aos/agrovoc/c_29554 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_2758 http://aims.fao.org/aos/agrovoc/c_2724 K50 - Technologie des produits forestiers U10 - Informatique, mathématiques et statistiques Fagus litière forestière biodégradation humus carbone cycle de l'azote modèle modèle de simulation facteur édaphique facteur climatique qualité expérimentation http://aims.fao.org/aos/agrovoc/c_2779 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_9261 http://aims.fao.org/aos/agrovoc/c_3693 http://aims.fao.org/aos/agrovoc/c_1301 http://aims.fao.org/aos/agrovoc/c_27938 http://aims.fao.org/aos/agrovoc/c_4881 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_15617 http://aims.fao.org/aos/agrovoc/c_29554 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_2758 http://aims.fao.org/aos/agrovoc/c_2724 |
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K50 - Technologie des produits forestiers U10 - Informatique, mathématiques et statistiques Fagus litière forestière biodégradation humus carbone cycle de l'azote modèle modèle de simulation facteur édaphique facteur climatique qualité expérimentation http://aims.fao.org/aos/agrovoc/c_2779 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_9261 http://aims.fao.org/aos/agrovoc/c_3693 http://aims.fao.org/aos/agrovoc/c_1301 http://aims.fao.org/aos/agrovoc/c_27938 http://aims.fao.org/aos/agrovoc/c_4881 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_15617 http://aims.fao.org/aos/agrovoc/c_29554 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_2758 http://aims.fao.org/aos/agrovoc/c_2724 K50 - Technologie des produits forestiers U10 - Informatique, mathématiques et statistiques Fagus litière forestière biodégradation humus carbone cycle de l'azote modèle modèle de simulation facteur édaphique facteur climatique qualité expérimentation http://aims.fao.org/aos/agrovoc/c_2779 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_9261 http://aims.fao.org/aos/agrovoc/c_3693 http://aims.fao.org/aos/agrovoc/c_1301 http://aims.fao.org/aos/agrovoc/c_27938 http://aims.fao.org/aos/agrovoc/c_4881 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_15617 http://aims.fao.org/aos/agrovoc/c_29554 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_2758 http://aims.fao.org/aos/agrovoc/c_2724 D'Annunzio, Rémi Zeller, Bernd Nicolas, Manuel Dhôte, Jean-François Saint André, Laurent Decomposition of European beech (Fagus sylvatica) litter : Combining quality theory and 15N labelling experiments |
description |
A multi-site and multi-age set of in situ 15N-labelled litter decomposition experiments was carried out in various European beech forests. The sites presented contrasted situations of climate and humus type that were representative of northern Europe temperate forests. 15N-labelled leaf litter was produced by urea spraying in an experimental beech plot, and was used in litter decomposition experiments over a 3-6-year period, depending on the site. Schemes of decomposition covered a wide range of situations, some of them not expected, like high decay rate on Moder humus forms or slow decomposition on Mull humus form. The objectives of this study were to determine how nitrogen release and/or incorporation rates could characterize litter decomposition dynamics. A carbon and nitrogen coupled model of decomposition based on the quality theory was used to fit the given data. High correlation coefficients and unbiased fitting were obtained both for carbon ðR2 ¼ 0:96; pp0:0001; n ¼ 392Þ and nitrogen ðR2 ¼ 0:86; pp0:0001; n ¼ 367Þ. The theoretical concept of quality was somewhat lightened and related to decomposer activity: low rates of quality decrease were associated with high decomposition rates, showing that when decomposers are sufficiently supplied with labile carbon from the humus they decompose litter more completely than when they are carbon limited. Provided that the degrading substrate stoichiometry was kept constant (i.e. C loss / N loss ratio), the same litter decomposition could be processed at different rates. Taking seasonal variations of the parameters into account is likely to improve our understanding, but further experiments at more frequent intervals are needed. |
format |
article |
topic_facet |
K50 - Technologie des produits forestiers U10 - Informatique, mathématiques et statistiques Fagus litière forestière biodégradation humus carbone cycle de l'azote modèle modèle de simulation facteur édaphique facteur climatique qualité expérimentation http://aims.fao.org/aos/agrovoc/c_2779 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_9261 http://aims.fao.org/aos/agrovoc/c_3693 http://aims.fao.org/aos/agrovoc/c_1301 http://aims.fao.org/aos/agrovoc/c_27938 http://aims.fao.org/aos/agrovoc/c_4881 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_15617 http://aims.fao.org/aos/agrovoc/c_29554 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_2758 http://aims.fao.org/aos/agrovoc/c_2724 |
author |
D'Annunzio, Rémi Zeller, Bernd Nicolas, Manuel Dhôte, Jean-François Saint André, Laurent |
author_facet |
D'Annunzio, Rémi Zeller, Bernd Nicolas, Manuel Dhôte, Jean-François Saint André, Laurent |
author_sort |
D'Annunzio, Rémi |
title |
Decomposition of European beech (Fagus sylvatica) litter : Combining quality theory and 15N labelling experiments |
title_short |
Decomposition of European beech (Fagus sylvatica) litter : Combining quality theory and 15N labelling experiments |
title_full |
Decomposition of European beech (Fagus sylvatica) litter : Combining quality theory and 15N labelling experiments |
title_fullStr |
Decomposition of European beech (Fagus sylvatica) litter : Combining quality theory and 15N labelling experiments |
title_full_unstemmed |
Decomposition of European beech (Fagus sylvatica) litter : Combining quality theory and 15N labelling experiments |
title_sort |
decomposition of european beech (fagus sylvatica) litter : combining quality theory and 15n labelling experiments |
url |
http://agritrop.cirad.fr/542783/ http://agritrop.cirad.fr/542783/1/document_542783.pdf |
work_keys_str_mv |
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1792496770952986624 |