Estudio comparativo de la movilización de bioelementos por los subsistemas arbóreo y herbáceo del ecosistema de Dehesa
- Escudero Berian, A. 1
- Montalvo Hernández, M.I. 1
- Garcia Criado, B. 1
- Gómez Gutiérrez, J.M. 1
- 1 Departamento de Ecología, Universidad de Salamanca Centro de Edafología y Biología Aplicada de Salamanca
ISSN: 0210-1270
Year of publication: 1983
Volume: 13
Issue: 1-2
Pages: 9-20
Type: Article
More publications in: Pastos: Revista de la Sociedad Española para el Estudio de los Pastos
Abstract
The quantity of various elements such as N, P, K, Ca, Mg, Na, Fe, Cu, Mn and Zn, mobilized annually by the two phytocoenotic components of the «dehesa» ecosystem has been evaluated from the data collected over two consecutive years. For this purpose, zones dominated by Oaks (Quercus rotundifolia Lam. and Q. pyrenaica Willd.) were selected, and, based on the annual nutrient input of the soil throug leaf litter and other residues, the quantity of minerals removed was estimated. In the same locations, nutrients removed from pastures were also estimated in áreas with and without tree cover. From the results obtained, comparisons have been made between the two phytocoenotic components of the «dehesa». Conclusions have been formulated regarding the recycling tendencie exhibited by each nutrient element, based on the results obtained from internutrient comparisons. The role of tree cover in regulating the rate of nutrient cycling and conservation of nutrient reserves in the ecosystem, has also been evaluated.