Phytoplankton production by remote sensing in the region off Cabo Corrientes, Mexico

Daffne C. López-Sandoval, José Rubén Lara-Lara, Saúl Álvarez-Borrego


Integrated total phytoplankton production (PPmod) (grams of carbon per square meter per day, gC m-2 d-1) was calculated for the oceanic region off Cabo Corrientes, Mexico. This was done with semi-analytic models from the literature and using chlorophyll a concentrations (Chlsat) and photosynthetically active radiation (PARsat) from monthly composites of the satellite sensor SeaWIFS, for May and November 2002, and June 2003. Average values for PPmod had a seasonal variation for the inshore (1.50 and 0.70 gC m-2 d-1 for May and June, and 0.38 for November) and the offshore (0.55 and 0.41 gC m-2 d-1 for May and June, and 0.31 for November) zones. It is interesting to note that our PPmod data are similar to the previously reported PP14C values for the Cabo Corrientes region. In general, Chlsat and PPmod support the previously reported ship data, which showed intense upwelling conditions during May, an upwelling relaxation period in June, and non-upwelling in November. Estimated PPmod values are within the range of those for other upwelling enriched ecosystems of the Pacific off Mexico.

Palabras clave

Cabo Corrientes; upwelling; satellite chlorophyll; modeled primary productivity; Eastern Tropical Pacific.

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