Observatorio de I+D+i UPM

Memorias de investigación
Artículos en revistas:
Unearthing the roots of degradation of Quercus pyrenaica coppices: A root-to-shoot imbalance caused by historical management?
Año:2016
Áreas de investigación
  • Monte bajo,
  • Bosque mediterráneo,
  • Árbol caducifolio,
  • Explotación forestal,
  • Biología vegetal, animal y ecología,
  • Fisiología vegetal,
  • Ecología vegetal,
  • Impacto antropogénico en ecosistemas
Datos
Descripción
Slow growth, branch dieback and scarce acorn yield are visible symptoms of decay in abandoned Quercus pyrenaica coppices. A hypothetical root-to-shoot (R:S) imbalance provoked by historical coppicing is investigated as the underlying driver of stand degradation. After stem genotyping, 12 stems belonging to two clones covering 81 and 16 m2 were harvested and excavated to measure above- and belowground biomass and nonstructural carbohydrate (NSC) pools. To study root system functionality, root connections and root longevity were assessed by radiocarbon analysis. Seasonality of NSC was monitored on five additional clones. NSC pools, R:S biomass ratio and fine roots-to-foliage ratio were higher in the large clone, whose centennial root system, estimated to be 550 years old, maintained large amounts of sapwood (51.8%) for NSC storage. 248 root connections were observed within the large clone, whereas the small clone showed comparatively simpler root structure (26 connections). NSC concentrations were higher in spring (before bud burst) and autumn (before leaf fall), and lower in summer (after complete leaf expansion); they were always higher in roots than in stems or twigs. The persistence of massive and highly inter-connected root systems after coppicing may lead to increasing R:S biomass ratios and root NSC pools over time. We highlight the need of surveying belowground organs to understand aboveground dynamics of Q. pyrenaica, and suggest that enhanced belowground NSC storage and consumption reflect a trade-off between clonal vegetative resilience and aboveground performance.
Internacional
Si
JCR del ISI
Si
Título de la revista
Forest Ecology And Management
ISSN
0378-1127
Factor de impacto JCR
2,826
Información de impacto
Datos JCR del año 2015
Volumen
363
DOI
10.1016/j.foreco.2015.12.040 0378-1127
Número de revista
Desde la página
200
Hasta la página
211
Mes
SIN MES
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Roberto Luis Salomon Moreno (UPM)
  • Autor: Jesus Rodriguez Calcerrada (UPM)
  • Autor: Elena Cristina Zafra Felipe (UPM)
  • Autor: Cesar Morales Del Molino (UPM)
  • Autor: Aida Rodriguez Garcia (UPM)
  • Autor: Ines Gonzalez Doncel (UPM)
  • Autor: Rosa Ana Lopez Rodriguez (UPM)
  • Autor: Jose Carlos Miranda Garcia-Roves (UPM)
  • Autor: Luis Alfonso Gil Sanchez (UPM)
  • Autor: María Lara García Valbuena (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Sistemas y Recursos Naturales
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