INVESTIGADORES
DE CABO Laura Isabel
artículos
Título:
INTERACCIÓN ENTRE Salvinia minima Y Lemna gibba: EFECTO SOBRE EL CRECIMIENTO EN DISTINTOS MEDIOS DE CULTIVO
Autor/es:
L. DE CABO; M. V. CASARES; R. SEOANE
Revista:
Biología Acuática
Editorial:
Instituto de Limnología Dr. R. A. Ringuelet
Referencias:
Año: 2009 vol. 26 p. 63 - 70
ISSN:
0326-1638
Resumen:
Nutrient uptake and competitive ability of the aquatic species Lemna gibba and Salvinia minima were evaluated. The experiment was carried out in a greenhouse and plants were grown as mono-plant cultures and mixed-plant cultures. Three different me-dia were used: tap water and the chemically defined media Lemna and Hutner 1/10. Du-ration of the experiment was 7 days. Initial and final dry weights and DIN and SRP con-centrations were determined. Relative growth rates (RGR) and nutrient uptake rates were calculated. L. gibba´s RGR values increased significantly in Hutner 1/10 medium when types of cultures were analyzed separately. RGR values decreased in Lemna and Hutner 1/10 media in mixed-plant cultures. S. minima did not show significant differences in its RGR values. In mono-plant cultures N and P uptake rates in Lemna medium were sig-nificantly larger for L. gibba. In Hutner 1/10 medium P uptake rate was greater for S. min-ima and N uptake rate was larger for L. gibba. The presence of S. minima negatively affected L. gibba´s growth.
