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Actividad inhibitoria del sobrenadante de la bacteria Antártica Pseudomonas sp. M19B en la formación de biopelículas de Flavobacterium psychrophilum 19749

Variación temporal de las variables físico-químicas y biomasa fitoplanctónica en aguas superficiales de la zona costera de Chacopata, NE Venezuela (Mar Caribe)

Authors

CORRESPONDING

Mairin Lemus

mlemus88@gmail.com

1

1

Escuela de Ciencias, Departamento de Biología, Universidad de Oriente, Cumaná, Venezuela

2

2

Centro de Investigaciones Ecológicas de Guayacán, Universidad de Oriente, Venezuela

4

4

Programa Prometeo, SENESCYT, Ecuador

Ruth Lara-Rodríguez

1

1

Escuela de Ciencias, Departamento de Biología, Universidad de Oriente, Cumaná, Venezuela

Roger Velásquez-Arenas

2

2

Centro de Investigaciones Ecológicas de Guayacán, Universidad de Oriente, Venezuela

Luís Troccoli-Ghinaglia

3

3

Escuela de Ciencias Aplicadas del Mar, Universidad de Oriente, Boca de Río, Venezuela

Deudedid Hernandez

##

Abstract

To understand the dynamics of some physico-chemical variables and phytoplankton biomass the Atlantic surface waters of coast Chacopata (Northeastern Venezuela), water samples were monthly collected from October 2006 to March 2007. During this period, shallow coastal waters of Chacopata were characterized by a warmer period (28.3°C ± 0.5°C) occurring from October to January and a cooler from February to March (22.9°C ± 0.2°C). During the cooler period high dissolved nitrogen (nitrite and ammonium) and phosphate concentrations were observed. The highest concentration of chlorophyll (3.59 ± 0.41 mg Chl a m-3) in surface waters was observed during the cooler period.

Key words

Phytoplankton biomass, Chlorophyll a, nutrient

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