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Leaf litter stoichiometry affects decomposition rates and nutrient dynamics in tropical forests under restoration in Costa Rica

Lanuza O., Casanoves F., Delgado D., Van Den Meersche K.. 2019. Restoration Ecology, 27 (3) : p. 549-558.

Active restoration strategies increase the production of leaf litter in tropical forests, but little is known about their effect on litter decomposition and subsequent nutrient release. We quantified changes in leaf litter stoichiometry during decomposition in former pasture sites under contrasting restoration strategies (natural regeneration, applied nucleation/islands tree planting and plantation), as well as in nearby primary forest. Litterbags were employed to evaluate decomposition. We used a leaf mixture of either the four planted tree species in the plantation and island treatments or the nearby primary forest and compared them under a factorial design. Decomposition rates were similar between restoration treatments (p?>?0.5), but leaves decomposed faster in the forest mixture than in the plantation mixture (p?

Mots-clés : transport des substances nutritives; litière forestière; régénération naturelle; forêt; forêt tropicale

Thématique : Foresterie - Considérations générales; Conservation de la nature et ressources foncières; Physiologie végétale : nutrition; Fertilité du sol

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