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Nutrient-cycling mechanisms other than the direct absorption from soil may control forest structure and dynamics in poor Amazonian soils
Grau Fernández, Oriol (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Peñuelas, Josep (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)
Ferry, Bruno (AgroParisTech)
Freycon, Vicent (Centre de coopération internationale en recherche agronomique pour le développement)
Blanc, Lilian (Centre de coopération internationale en recherche agronomique pour le développement)
Desprez, Mathilde (Centre de coopération internationale en recherche agronomique pour le développement)
Baraloto, Christopher (Florida International University. International Center for Tropical Botany)
Chave, Jerome (Centre national de la recherche scientifique. Laboratoire Evolution et Diversité Biologique)
Descroix, Laurent (Office National des Fôrests Guyane. Réserve de Montabo)
Dourdain, Aurélie (Centre de coopération internationale en recherche agronomique pour le développement)
Guitet, Stéphane (Université de Montpellier. Botanique et Modélisation de l'Architecture des Plantes et des Végétations)
Janssens, Ivan (University of Antwerp (Bèlgica))
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Hérault, Bruno (Centre de coopération internationale en recherche agronomique pour le développement)

Date: 2017
Abstract: Tropical forests store large amounts of biomass despite they generally grow in nutrient-poor soils, suggesting that the role of soil characteristics in the structure and dynamics of tropical forests is complex. We used data for > 34 000 trees from several permanent plots in French Guiana to investigate if soil characteristics could predict the structure (tree diameter, density and aboveground biomass), and dynamics (growth, mortality, aboveground wood productivity) of nutrient-poor tropical forests. Most variables did not covary with site-level changes in soil nutrient content, indicating that nutrient-cycling mechanisms other than the direct absorption from soil (e. g. the nutrient uptake from litter, the resorption, or the storage of nutrients in the biomass), may strongly control forest structure and dynamics. Ecosystem-level adaptations to low soil nutrient availability and long-term low levels of disturbance may help to account for the lower productivity and higher accumulation of biomass in nutrient-poor forests compared to nutrient-richer forests.
Grants: European Commission 610028
Ministerio de Economía y Competitividad CGL2013-48074
Ministerio de Ciencia e Innovación CSD2008-00040
Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-274
Rights: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Language: Anglès
Document: Article ; recerca ; Versió publicada
Subject: Ecology ; Plant sciences
Published in: Scientific reports, Vol. 7, art. 45017 (2017) , ISSN 2045-2322

DOI: 10.1038/srep45017
PMID: 28332608


11 p, 846.5 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
Articles > Research articles
Articles > Published articles

 Record created 2017-04-07, last modified 2023-10-01



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