INVESTIGADORES
SCHLOSS Irene Ruth
artículos
Título:
Vertical Mixing and Ecological Effects of Ultraviolet Radiation in
Autor/es:
EMMA FERRERO, MATÍAS EORY, GUSTAVO FERREYRA, IRENE SCHLOSS, HORACIO ZAGARESE
Revista:
PHOTOCHEMISTRY AND PHOTOBIOLOGY
Referencias:
Año: 2006 p. 898 - 902
ISSN:
0031-8655
Resumen:
We present a mathematical model for a phytoplankton
zooplankton system, based on a predatorprey scheme. The
model considers the effects of sinking in the phytoplankton,
vertical mixing and attenuation of photosynthetically active
radiation (PAR) and ultraviolet radiation (UVR) in the water
column. In a first approach, the model was studied under
conditions of average PAR irradiance and shows fluctuations
and stable equilibrium points. Secondly, we introduced the
effects of photoperiod and photoinhibition by UVR and
vertical mixing. Under these conditions, the phytoplankton
biomass oscillates depending on the combined effects of UVR
and mixing. Higher inhibition by UVR and longer mixing
periods can induce strong fluctuations in the system but can
also produce higher plankton peaks.