6 páginas, 3 figurasSix bimonthly surveys during 2007 were carried out in Magdalena Bay (Mexico) during spring tide conditions.
Spatiotemporal variations of temperature, salinity, nitrite, nitrate, ammonium, phosphate and chlorophyll-a were analyzed
in the Bay. During spring-early summer (April-June) seawaters were colder and richer in new nutrients and chlorophyll-a
than autumn and winter (February and October-December). The coastal upwelling during spring-early summer contributes
with new nutrients to the Bay, whereas bottom-recycled nutrients should be the main input during the autumn-winter
period. Thus, nutrients availability, dissolved inorganic nitrogen and phosphate, promote a seasonal pattern of
phytoplankton biomass in Magdalena Bay.El presente trabajo se realizó con el
apoyo del Instituto Politécnico Nacional a través del
proyecto SIP-20070265Peer reviewe
