Article
Efecto de la concentración de clorofila a y seston superficial sobre la transparencia del agua de mar en una región Costera del Golfo De California, México
Fecha
2003-07-01Registro en:
Cervantes Duarte, R., A. Reyes Salinas, G. Verdugo Diaz & J. E. Valdez Holguín. 2003. Efecto de la concentración de clorofila a y seston superficial sobre la transparencia del agua de mar en una región costera del Golfo de California, México. Oceánides, 18(1): 1-11
0186-5102
Autor
Cervantes Duarte, R.
Reyes Salinas, A.
Verdugo Diaz, G.
Valdez Holguín, J.E.
Institución
Resumen
Hydrological characteristics of the surface layer of the Bay and Lagoon denominated Ensenada de La Paz were studied. Fifty six hydrographic stations were sampled during June, September, and November of 1997 and January of 1998. The hydrological conditions in the waters of the Bay and Lagoon of La Paz were strongly driven by the climatic and oceanographic conditions from the central and southern region of the Gulf of California. However, the typical characteristics in the shallow area of the Lagoon clearly differentiate from nearby oceanic waters. It is proposed a constant of 1.54 (± 0.07) to calculate the diffuse light attenuation coefficient (Kd PAR) starting from the extinction depth of Secchi disk . The correlations among water transparency, chlorophyll and seston concentration were significant in the study area. Hyperbolic fit showed that more than 70% of the variance for water transparency was explained by surface chlorophyll and seston concentration. The combined effect of chlorophyll and seston explains more than 85% of the water transparency. The information obtained suggest that extinction depth of Secchi disk can be used as estimator of the chlorophyll and seston concentration in the study area.