Contrasting above-ground biomass balance in a Neotropical rain forest

Rutishauser Ervan, Wagner Fabien, Hérault Bruno, Nicolini Eric-André, Blanc Lilian. 2010. Contrasting above-ground biomass balance in a Neotropical rain forest. Journal of Vegetation Science, 21 (4) : 672-682.

https://doi.org/10.1111/j.1654-1103.2010.01175.x

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Quartile : Q1, Sujet : FORESTRY / Quartile : Q1, Sujet : PLANT SCIENCES / Quartile : Q2, Sujet : ECOLOGY

Résumé : Question: What are the relative roles of tree growth, mortality and recruitment in variations of aboveground biomass in tropical forests? Location: Paracou, French Guiana. Methods: We quantified the contribution of growth, recruitment and mortality to total biomass of stands (trees DBH _ 10 cm) in six 6.25-ha permanent plots over 16 yr. Live biomass stocks and fluxes were computed for four separate size classes. Results: All plots showed increasing biomass stocks over the study period, with an average value of 10.9Mgha_1 yr_1. Plots aggrading biomass were characterized by either minor biomass losses due to mortality or substantial increases in the biomass of large trees (DBH _ 60 cm). Conclusions: Within the study period, the rarity of mortality events could not counter-balance the slow permanent increase in biomass, resulting in an apparent increase in biomass. Accounting for such rare events results in no net change in biomass balance.

Mots-clés Agrovoc : forêt tropicale humide, biomasse

Mots-clés géographiques Agrovoc : Guyane française, France

Classification Agris : K10 - Production forestière
F40 - Écologie végétale

Champ stratégique Cirad : Axe 6 (2005-2013) - Agriculture, environnement, nature et sociétés

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