Phytoplanktonic temporal variability in a coastal area of northwestern Baja California

A phytoplankton study was barried out in Bahía de Todos Santos from March 1986 to March 1987. Samples were taken monthly at three stations and at depths of 1, 10 and 20 m. The temporal variability of the phytoplankton taxonomic groups was very similar most of the time, except in June and November w...

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Main Authors: E Millán-Núñez, DH Loya-Salinas
Format: Article
Language:English
Published: Universidad Autónoma de Baja California 1993-03-01
Series:Ciencias Marinas
Subjects:
Online Access:http://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/920
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author E Millán-Núñez
DH Loya-Salinas
author_facet E Millán-Núñez
DH Loya-Salinas
author_sort E Millán-Núñez
collection DOAJ
description A phytoplankton study was barried out in Bahía de Todos Santos from March 1986 to March 1987. Samples were taken monthly at three stations and at depths of 1, 10 and 20 m. The temporal variability of the phytoplankton taxonomic groups was very similar most of the time, except in June and November when an increase in the diatom group was detected. These cell blooms may be due to mixing processes or upwelling events that occur outside the study area. The advection process into the bay is shown by the low oxygen saturation values for June at 20 m depth. The size fractions of diatoms showed two successional phases of bloom events: in June, an abundance of cells was observed with late-bloom characteristics since the predominant cell size of the diatom group was > 20um, whereas in November there was a dominance of cells < 20 µm, characteristic of a prebloom event.
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spelling doaj.art-21bdc7799b944a84a5133af327b0e4872024-03-04T16:43:50ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90531993-03-0119110.7773/cm.v19i1.920Phytoplanktonic temporal variability in a coastal area of northwestern Baja CaliforniaE Millán-Núñez0DH Loya-Salinas1Secretaría de MarinaSecretaría de Marina A phytoplankton study was barried out in Bahía de Todos Santos from March 1986 to March 1987. Samples were taken monthly at three stations and at depths of 1, 10 and 20 m. The temporal variability of the phytoplankton taxonomic groups was very similar most of the time, except in June and November when an increase in the diatom group was detected. These cell blooms may be due to mixing processes or upwelling events that occur outside the study area. The advection process into the bay is shown by the low oxygen saturation values for June at 20 m depth. The size fractions of diatoms showed two successional phases of bloom events: in June, an abundance of cells was observed with late-bloom characteristics since the predominant cell size of the diatom group was > 20um, whereas in November there was a dominance of cells < 20 µm, characteristic of a prebloom event. http://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/920phytoplanktontemporal variabilitysize fractionsupwellingBaja California
spellingShingle E Millán-Núñez
DH Loya-Salinas
Phytoplanktonic temporal variability in a coastal area of northwestern Baja California
Ciencias Marinas
phytoplankton
temporal variability
size fractions
upwelling
Baja California
title Phytoplanktonic temporal variability in a coastal area of northwestern Baja California
title_full Phytoplanktonic temporal variability in a coastal area of northwestern Baja California
title_fullStr Phytoplanktonic temporal variability in a coastal area of northwestern Baja California
title_full_unstemmed Phytoplanktonic temporal variability in a coastal area of northwestern Baja California
title_short Phytoplanktonic temporal variability in a coastal area of northwestern Baja California
title_sort phytoplanktonic temporal variability in a coastal area of northwestern baja california
topic phytoplankton
temporal variability
size fractions
upwelling
Baja California
url http://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/920
work_keys_str_mv AT emillannunez phytoplanktonictemporalvariabilityinacoastalareaofnorthwesternbajacalifornia
AT dhloyasalinas phytoplanktonictemporalvariabilityinacoastalareaofnorthwesternbajacalifornia