Tree and grazing influence on herbaceous pasture diversity in the Dehesa agroforestry system

Lopez Sanchez, Aida; San Miguel Ayanz, Alfonso; Roig Gómez, Sonia y López Carrasco, Celia (2013). Tree and grazing influence on herbaceous pasture diversity in the Dehesa agroforestry system. En: "The Role of Grasslands in a Green Future. Threats and perspectives in less favoured areas. 17th EGF Symposium", 23/06/2013 - 26/06/2013, Akureyri, Islandia. ISBN 978-9979-881-20-9. pp. 391-393.

Descripción

Título: Tree and grazing influence on herbaceous pasture diversity in the Dehesa agroforestry system
Autor/es:
  • Lopez Sanchez, Aida
  • San Miguel Ayanz, Alfonso
  • Roig Gómez, Sonia
  • López Carrasco, Celia
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: The Role of Grasslands in a Green Future. Threats and perspectives in less favoured areas. 17th EGF Symposium
Fechas del Evento: 23/06/2013 - 26/06/2013
Lugar del Evento: Akureyri, Islandia
Título del Libro: The Role of G rasslands in a Green Future 391
Fecha: 2013
ISBN: 978-9979-881-20-9
Materias:
Escuela: E.T.S.I. Montes (UPM) [antigua denominación]
Departamento: Silvopascicultura [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 30180
Identificador DC: http://oa.upm.es/30180/
Identificador OAI: oai:oa.upm.es:30180
URL Oficial: http://www.ffe.slu.se/Webdata/$agenda/20130628-125327.pdf
Depositado por: Memoria Investigacion
Depositado el: 20 Jun 2014 14:47
Ultima Modificación: 25 May 2015 15:13
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