Abstract
Material collected with a time-series sediment trap moored in San Lázaro Basin, near the NE Pacific upwelling zone off Bahía Magdalena, Baja California Sur (Mexico), from August to November 1996 and December 1997 to June 1998, revealed temporal changes in the flux of benthic diatoms. Fluxes were highest during fall and spring. Lateral transport of benthic diatoms from the coastal zone seems to be an important phenomenon at this site. The species assemblage includes components found mainly in mangrove environments of Bahía Magdalena, as well as nearby rocky coastlines, indicating that locally the northward counter current or coastal gyres carry living cells, and possibly other particles of lagoon origin, across the continental shelf.
Highlights
IntroducciónWhen identifying benthic marine diatoms one often relies on key species or floristic inventories from distant localities, some separated by unbridgeable barriers
Material collected with a time-series sediment trap moored in San Lázaro Basin, near the NE Pacific upwelling zone off Bahía Magdalena, Baja California Sur (Mexico), from August to November 1996 and December 1997 to June 1998, revealed temporal changes in the flux of benthic diatoms
Lateral transport of benthic diatoms from the coastal zone seems to be an important phenomenon at this site
Summary
Material collected with a time-series sediment trap moored in San Lázaro Basin, near the NE Pacific upwelling zone off Bahía Magdalena, Baja California Sur (Mexico), from August to November 1996 and December 1997 to June 1998, revealed temporal changes in the flux of benthic diatoms. Lateral transport of benthic diatoms from the coastal zone seems to be an important phenomenon at this site. Material recolectado en una trampa de sedimento de serie de tiempo anclada en la Cuenca San Lázaro, cerca de la zona de surgencias del Pacífico nororiental frente a Bahía Magdalena, Baja California Sur (México), de agosto a noviembre de 1996 y de diciembre de 1997 a 1998, reveló cambios temporales en el flujo de diatomeas bentónicas. Palabras clave: diatomeas bentónicas, trampa de sedimento, transporte, Península de Baja California
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