
handle: 10459.1/62375
Vegetation dynamics in montane grasslands at Sant Jaume de Frontanya (Eastern Pyrenees). The study of the anual biomass variation of grasslands from Sant Jaume de Frontanya (Alt Bergueda, Barcelona), besides the analysis of phenological differences among communities, show that they are phased out, and adopt different models of development according to the degree of mesophily. The greatest variability in fresh weight among communities is related to exogenous factors, and the constancy in the increase of dry weight, to the combination of both exogenous and endogenous factors.
L'estudi de la variacio de la biomassa de les pastures de Sant Jaume de Frontanya (Alt Bergueda, Barcelona) al llarg del cicle anual. junt amb Tanalisi de la fenologia comparada entre diversos tipus de comunitats. indiquen l'existencia d'un desfasament en el desenvolupament de l'herba i l'existencia de diversos models de creixement en funcio del grau de mesofflia. Horn relaciona la variabilitat mes alta del pes fresc entre comu- nitats amb els factors exogens, i la constancia en l'augment del pes sec en totes elles amb els factors endogens.
Mesophily, Dryweight, Plant production, Pyrenees, Montane grasslands
Mesophily, Dryweight, Plant production, Pyrenees, Montane grasslands
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