Estructura y funcionalismo de un encinar montano en el Montseny. IV: producción de hojarasca

• Autores: Antonio María Claret Verdú González, Lluís Ferrés, Ferrán Rodà de Llanza, Jaume Terradas
• Localización: Mediterránea: Serie de estudios sobre biología terrestre mediterránea, ISSN 0210-5004, Nº. 4, 1980, págs. 51-67
• Idioma: español
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• Resumen

  • Litterfall and its concomitant mass and nutrient (Na, K, Ca and Mg) fluxes to the forest floor are studied in a montane-Mediterranean evergreen-oak (Quercos ilex L.) wood at La Castanya (Montseny, Barcelona). Litterfall is colected biweekly in 16 (only 8 during the first 6 months) conical, 0.25 m litterfall traps randomly distributed over a 0.22 ha experimental plot. Results from the first year of study (May 1978 - May 1979) are reported in this paper. Litterfall a mounted to 4.5 t ha-1 yr-1, not including in this figure the branches longer than 40 cm or thicker than 5mm. Leaves represented 3.08 t ha-1 yr-1 (68.11% of litterfall), twigs 1.05 t ha-1 yr-1 (23.22%), and fruits and inflorescences 0.14 t ha-1 yr-l (3.21%). Leaf fall exhibited a distinct seasonal maximum in late spring-early summer, but total litterfall peaked later when an autumn hailstorm and a November windstorm struck the forest. Nutrient contents of freshly-fallen evergreen-oak litter were within the range of published values for this species. Nutrient fluxes in litterfall were (kg ha-1 yr-1): Na 0.76, K 18.28, Ca 41.64 and Mg 5.43. Throughfall data from Rodá et al. (1980) allowed to compute the following nutrient fluxes in litterfall plus throughfall (kg ha-1 yr-1): Na 9.1, K 38.0, Ca 64.7 and Mg 9.3.