Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
The important role of scattered trees on the herbaceous diversity of a grazed Mediterranean dehesa
Year:2016
Research Areas
  • Meditarranean forest
Information
Abstract
Scattered trees are considered keystone structures and play an important role in Mediterranean sylvopastoral systems. Such systems are associated with high biodiversity and provide important natural resources and ecosystem services. In this study, we measured the contribution of scattered trees and different grazing management (cattle, sheep and wildlife only) to the diversity of the grassland sward in a dehesa (open holm oak woodland) located in Central Spain. We analyzed alpha and beta diversity through measurement of species richness, Shannon-Wiener, and Whittaker indices, respectively; and the floristic composition of the herb layer using subplots within two adjacent plots (trees present vs. trees absent) under three different grazing management regimes, including wildlife only, during a year. We found a 20?30% increment in the alpha diversity of wooded plots, compared to those without trees, regardless of grazing management. All beta indices calculated showed more than 60% species turnover. Wooded plots were occupied by different herbaceous species in different heterogeneous microsites (under the canopy, in the ecotone or on open land) created by the trees. Livestock grazing modified species composition (e.g. more nitrophilous species) compared to wildlife only plots. In addition to all their other benefits, trees are important to maintaining grassland diversity in Mediterranean dehesas.
International
Si
JCR
Si
Title
Acta Oecol
ISBN
1146-609X
Impact factor JCR
1,617
Impact info
Datos JCR del año 2014
Volume
76
Journal number
From page
31
To page
38
Month
OCTUBRE
Ranking
Participants
  • Autor: Aida Lopez Sanchez (UPM)
  • Autor: Alfonso San Miguel Ayanz (UPM)
  • Autor: Celia López-Carrasco
  • Autor: Lynn Huntsinger (University of Berkeley)
  • Autor: Sonia Roig Gomez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Sistemas y Recursos Naturales
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