SciELO - Scientific Electronic Library Online

 
vol.21 número2Ciclo gonádico de Tegula aureotincta (Mollusca: Gastropoda) en Bahía Asunción, Baja California Sur, MéxicoCaracterización espacial y temporal de la pesquería en la Reserva de la Biosfera Banco Chinchorro, norte del Sistema Arrecifal Mesoamericano índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • No hay artículos similaresSimilares en SciELO

Compartir


Hidrobiológica

versión impresa ISSN 0188-8897

Resumen

LOPEZ-CORTES, David Javier et al. Co-ocurrence of Chattonella marina and Gymnodinium catenatum in Bahía de La Paz, Gulf of California (Spring 2009). Hidrobiológica [online]. 2011, vol.21, n.2, pp.185-196. ISSN 0188-8897.

During the period of 24 March to 14 May 2009, water and net samples were obtained for phytoplankton analyses; one aliquot was fixed in Lugol's solution for species quantification and identification. Net samples were used for the identification of live phytoplankton species. Additionally, temperature in situ, chlorophyll a and inorganic nutrients were measured weekly in three stations. Two species were identified: Chattonella marina (Subrahmanyan) Y. Hara et Chihara and Gymnodinium catenatum Graham. Chattonella marina was the most abundant species with a density at subsurface level of 14 × 103 to 36 × 103 cell L-1. Gymnodinium catenatum had densities were of 1 × 103 to 19 × 103 cell L-1. Water column temperature was quasi homogeneous from surface to 20 m in depth, with an interval of 19.5 to 22.0 °C and 20.0 to 21.5 °C from March to April respectively. In the middle of May stratification of the water column initiated with a slight temperature difference of 5.0 °C recorded from surface to 20 m in depth. Nitrates varied from 0.5 to 11.0 μM and orthophosphates from 0.4 to 2.6 μM. Chlorophyll a showed a value at surface level of 7.5 mg m-3 and 3.5 mg m-3 at 20 m in March; in May chlorophyll a values ranged between 2.0 to 7.0 mg m-3. We conclude that the presence of these two species during this study period was associated to the relaxation of the mixing processes in the zone.

Palabras llave : Chatonella marina; Gymnodinium catenatum; Bahía of La Paz; Gulf of California; marine phytoplankton.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons