Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Tree and grazing influence on herbaceous pasture diversity in the Dehesa agroforestry system
Year:2013
Research Areas
  • Earth sciences,
  • Agriculture
Information
Abstract
Mediterranean Dehesas are one of the European natural habitat types of Community interest (43/92/EEC Directive), associated to high diversity levels and producer of important goods and services. In this work, tree contribution and grazing influence over pasture alpha diversity in a Dehesa in Central Spain was studied. We analyzed Richness and Shannon-Wiener (SW) indexes on herbaceous layer under 16 holms oak trees (64 sampling units distributed in two directions and in two distances to the trunk) distributed in four different grazing management zones (depending on species and stocking rate). Floristic composition by species or morphospecies and species abundance were analyzed for each sample unit. Linear mixed models (LMM) and generalized linear mixed models (GLMMs) were used to study relationships between alpha diversity measures and independent factors. Edge crown influence showed the highest values of Richness and SW index. No significant differences were found between orientations under tree crown influence. Grazing management had a significant effect over Richness and SW measures, specially the grazing species (cattle or sheep). We preliminary quantify and analyze the interaction of tree stratum and grazing management over herbaceous diversity in a year of extreme climatic conditions.
International
Si
Congress
The Role of Grasslands in a Green Future. Threats and perspectives in less favoured areas. 17th EGF Symposium
960
Place
Akureyri, Islandia
Reviewers
Si
ISBN/ISSN
978-9979-881-20-9
Start Date
23/06/2013
End Date
26/06/2013
From page
391
To page
393
The Role of Grasslands in a Green Future. Threats and perspectives in less favoured areas. 17th EGF Symposium
Participants
  • Autor: Aida Lopez Sanchez (UPM)
  • Autor: Alfonso San Miguel Ayanz (UPM)
  • Autor: Celia López Carrasco (JCCM)
  • Autor: Sonia Roig Gomez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ecología y Gestión Forestal Sostenible
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