Phytoplankton oceanographic characterization during El Niño 2004 event in the Northwest region of Baja California, Mexico
2016
Miranda-Alvarez, A. C. | Millan-Nuñez, E.
An oceanographic cruise in front of the Coastof Baja California was carried from the 9th to the 29th dayof July in 2004, in 91 stations at 10 m depth. The aim ofthis study was to identify the variability of phytoplanktonand its oceanographic characterization in the coast-oceanregion during an anomalous year with El Niño characteristics.Results showed a taxonomic composition of 21phytoplankton genera in an interval size called nano-microphytoplankton:Gymnodinium, Scrippsiella, Ceratium,Coscinodiscus, Oxytoxum, Gyrodinium, Protoperidinium,Nitzschia, Gonyaulax. On the other hand, spatial distributionof light absorption coefficient for phytoplankton (aph440)and chlorophyll-a (Chl-a) concentration showed high valuesin front of the San Quintin coast and south of Punta Eugenia,detecting a clear decrease towards the oceanic zone.In regard to the taxonomic composition of phytoplankton,a dominance of dinoflagellates in contrast to diatoms wasobserved, results coinciding with the basic characteristics ofphytoplankton ecology during an El Niño event.
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