INVESTIGADORES
BALSEIRO esteban Gabriel
artículos
Título:
Nutrient recycling and shifts in N:P ratio by different zooplankton structures in a South Andes lake.
Autor/es:
BALSEIRO, E.G; MODENUTTI, BEATRIZ E; QUEIMALINOS, CLAUDIA P
Revista:
Journal of Plankton Research
Editorial:
Oxford University Press
Referencias:
Año: 1997 vol. 19 p. 805 - 819
Resumen:
In South Andes lakes, zooplankton succession is characterized by a change in the dominancefrom the calanoid copepod Boeckellu grucilipes in winter and spring, to the cladoceran Bosrninulongirostris in midsummer, and the rotifer Polyurthra vulguris in late summer. We performed threeseries of field experiments at different times (late spring, summer and late summer) to examine therole of zooplankton constitution in the released nitrogen:phosphorus (NP) ratio. We observed thatchanges in the zooplankton constitution over the annual cycle may change the nutrient supply ratio.In South Andes lakes, Boeckellu grucilipes would decrease the P limitation, lowering the N:P ratio,whereas Bosrninu longirostris tends to increase the N:P ratio and therefore increase the P limitationduring summer.