INVESTIGADORES
BEAMUD Sara guadalupe
congresos y reuniones científicas
Título:
Response of acidophilic algae at pH 2 to concentrations of C, N and P
Autor/es:
BEAMUD, G., DIAZ, M., BAFFICO G Y F. PEDROZO.
Lugar:
Lahiti, Finlandia
Reunión:
Congreso; Congreso de la Sociedad Internacional de limnología, SIL 2004; 2004
Resumen:
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The rate of growth, photosynthetic CO2 and
Light-response curves of the acidophilic species isolated from Lake Caviahue
and Agrio River at pH 2, were measured. Lab
bioassays were performed to asses growth-rate and yield limitation by carbon,
phosphorus and nitrogen. Chloridella sp growth was zero in the absence of CO2,
but at air equilibrium (360 ppm) had reached 86 to 95% of the saturated rate,
which was achieved by 720 ppm. The addition of nitrogen changed the
phytoplankton community structure: Chloridella sp and Keratococcus
rhaphidioides were replaced by Euglena mutabilis. Our results suggest that
nitrogen ,ay limit algae growth.
