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Pàgina inicial > Articles > Articles publicats > Effects of drought-induced forest die-off on litter decomposition |
Data: | 2016 |
Resum: | Aims: drought-induced forest die-off and subsequent species replacement may modify environmental conditions and eventually affect litter decomposition. We aimed to disentangle the effects of tree species and die-off state on litter decomposition in a mixed forest where Pinus sylvestris populations experiencing severe drought-induced die-off are being replaced by Quercus ilex. - Methods: litter bags with leaves and fine roots from both species were placed under canopies representing three habitats of the die-off and replacement process (healthy and dead P. sylvestris and healthy Q. ilex). Mass was assessed over 3 years. - Results: species-specific chemistry of litter (C:N ratio) had a direct effect on mass loss, but also indirect effects, attributed to the decomposer microbial community associated with a given habitat-species. In their respective original habitats, oak leaves decomposed 44 % faster than pine needles, whereas oak roots decomposed 46 % slower than pine roots. - Conclusions: forest die-off and species replacement affected litter decomposition. This effect can have great implications in forest functioning, particularly if drought-induced die-off worsens in the next decades, according with the trend observed in the studied system. |
Ajuts: | Ministerio de Educación y Ciencia CGL2009-08101 Ministerio de Ciencia e Innovación CGL2010-16373 Ministerio de Ciencia e Innovación CGL2012-32965 Ministerio de Economía y Competitividad CGL2013-42271-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-00247 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-453 |
Drets: | Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Carbon cycle ; Forest die-off ; Home field advantage ; Litter decomposition ; Mediterranean forest |
Publicat a: | Plant and soil, Vol. 402 Issue 1 (May 2016) , p. 91-101, ISSN 1573-5036 |
Post-print 30 p, 1.9 MB |