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Above-ground biomass and species richness in a mediterranean salt-marsh.

AutorGarcía, Luis V. ; Marañón, Teodoro ; Moreno López, Adela ; Clemente Salas, Luis
Palabras claveCanonical correspondence analysis
Diversity
Doñana National Park
Marismas
Salinity
Standing crop
Water regime
Fecha de publicaciónabr-1993
CitaciónJournal of Vegetation Science 4(3): 417-424 (1993)
ResumenSpecies composition, above-ground biomass and diversity of herbaceous communities were recorded in 50 sites on the upper salt marsh of the Guadalquivir delta (SW Spain). Through Canonical Correspondence Analysis relationships were shown between plant-species characteristics abundance and environmental variables. Seven community types were distinguished and related to hydrological regime and physical and chemical soil parameters. The higher species richness was associated with moderate values of above-ground biomass (Biomass at maximum diversity, BMD = 302 g/m2). Salinity was negatively correlated with species richness. There was no significant correlation with total above-ground biomass. Water regime and soil nutrient (Ca, Mg) content were significant predictors of the community above-ground biomass.
Descripción8 páginas, 2 tablas, 5 diagramas, 43 referencias.
URIhttp://hdl.handle.net/10261/17713
DOI10.2307/3235601
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