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Flujos de C, N y P disueltos en un ecosistema forestal de la Sierra de Gata (Provincia de Salamanca, España)

AuthorsGallardo, Juan F. ; Vicente Hernández, M. A.; González Hernández, M. I.
KeywordsBulk precipitation
Soil water
Quercus pyrenaica
Mediterranean climate
Dissolved organic C
Dissolved organic N
Dissolved organic P
Issue Date1998
CitationX Congreso Latinoamericano de Geología, VI Congreso Nacional de Geología Económica, Buenos Aires, 8 a 13 de noviembre de 1998: actas I: 405-411 (1998)
AbstractFluxes of dissolved organic C, N and P in forest ecosystem of the "Sierra de Gata" mountains province of Salamanca, Western Spain). The aim of his work was to know the fluxes of some chemical parameters (dissolved organic C, dissolved organic N, and dissolved organic P) when the bulk precipitation crosses the foress canopy, the litter and the soil, and, after soil percolation and drainage, appears as streamwater at the earth surface during the wet season. The study plot is located at Navasfrías "Sierra de Gata", mountains, Western Spain). The lithology is Paleozoic slates, climate temperate, humid Mediterranean, altitude 960 m a.s.l., mean annual precipitation 1580 L m-2 y r-1, annual mean temperature 10.4 ºC, and tree species deciduous (Quercus pyrenaica) oak. The catchment is ca 20 ha and there is a weir in an intermittent stream, inside the fenced forest plot. Chemical composition of waters (bulk precipitation, throughfall, litter leachates, soil leachates, and streamwaters) and fluxes have been analyzed from September 1996 to October 1997. Temporal evolution of the DOC content of these water solutions is discussed and the fluxes of DOC, DON, and DOP were established in relation to the intermittent stream (arroyo) and a close permanent river (río Hondo). The highest increases of DOC and DOP were observed when the troughfall water leaches the floor litter. Rainwater-N absorption by the canopy leaves is also predicted. There is a net gain of C, N and P in the overall forest ecosystem.
Description7 páginas, 5 figuras
Appears in Collections:(IRNASA) Comunicaciones congresos
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