TROCCOLI-GHINAGLIA, L. E. CINVESTAV-IPN, UNIDAD MERIDA, troccoli@kin.cieamer.conacyt.mx
HERRERA-SILVEIRA, J. E. CINVESTAV-IPN, UNIDAD MERIDA, jherrera@kin.cieamer.conacyt.mx

 
DISTRIBUTION AND ABUNDANCE OF PHYTOPLANKTON OF PENINSULA DE YUCATAN IN THE NORTES SEASON (NOVEMBER 1997)
 
During a cruise, carried out from 19 to 24 of November of 1997, on board of the r/v Antares of the Navy of Mexico, were collected water samples for the estimate of Chlorophyll and for phytoplankton analysis in 34 stations distributed along the Peninsula of Yucatán between Progreso and Cabo Catoche. The concentration average of Chlorophyll was 0.90 mg/m3 and showed the greatest concentrations toward the western area of the Peninsula. They were identified 156 species of phytoplankton with 90 species of Diatoms, 57 Dinoflagellates, 4 Cyanobacteria, 1 Silicoflagellates, 1 Euglenophyta and 2 Coccolithophorids. The abundance average was 17.5 Cel/ml with maximum of 121 Cel/ ml in the near coast stations and been located in the west-center area of the Peninsula and minimum of 0.09 to the north of Cabo Catoche. Diatoms prevailed on the remainder of the species, prevailing Haslea wrawrikae, Chaetoceros dichaeta, Proboscia alata and Guinardia striata. They are indicative of high levels of nutrients. We discussed that the nutrients supply during the "nortes" season, would come mainly for the process of wind turbulence produced by the cold fronts and not due the effect of coastal upwelling of Cabo Catoche.
 
Day: Thursday, Feb. 4
Time: Poster
Location: Sweeney Center
 
Code: CS62TH0721S