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  • 1
    Publication Date: 2021-05-19
    Description: Se evaluó el patrón de distribución espacial así como la contribución de las fracciones del plancton a la biomasa planctónica menor de 200 μm en la región NW de las aguas oceánicas adyacentes a Cuba en muestreos realizados en época de invierno (febrero de 1997 y marzo 1999). Los valores de la biomasa bacteriana variaron entre 1.6 y 11.4 mgC m-3, del nanoplancton entre 5.2 y 20.8 mgC m-3 (Xmedia = 11.4 ± 5.4 mgC m-3) y la del microzooplancton entre 4.2 y 15.5 mgC m-3 (Xmedia = 7.9 ± 3.2 mgC m-3). El microfitoplancton presentó valores de biomasa que variaron entre 1.95 y 15.7 mgC m-3 (Xmedia = 8.8 ± 3.7 mgC m-3). Los mayores valores de biomasa de todas las fracciones estudiadas se encontraron en las aguas oceánicas adyacentes a la zona entre las bahías de Mariel y La Habana. El nanoplancton fue la fracción que más aportó a la biomasa menor de 200 μm en la capa fótica, seguida del microzooplancton, tanto en la estación con influencia costera (N.57) como en la oceánica (N.18).
    Description: Published
    Description: Aguas oceánicas, Microzooplancton, Microfitoplancton
    Keywords: Biomass ; Bacteria ; Biomass ; Bacteria ; Nannoplankton ; Oceanic waters ; Zooplankton ; Phytoplankton
    Repository Name: AquaDocs
    Type: Journal Contribution , Non-Refereed , Article
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  • 2
    Publication Date: 2021-05-19
    Description: The anthropogenic affectation was evaluated on the coast N of the Gulf of Batabanó in May 2003 (corresponding to the provinces of Matanzas and Havana), in areas located in the line of the coast. The results were compared with the historical information of the sector. In the coast N and the Ensenada of the Broa, the parameters oxygen saturation, DBO5 and DQO showed characteristic high values of eutrofication. The biggest contribution in the Cianoficies was in the near coastal areas to sources of organic contamination. In the case of the nutrients they show specific data of mesothrofic waters with tendency to the eutrofization and the silts presented a high affectation for toxic metals. The area near to Guanímar is distinguished to present conditions of organic contamination that favor heterothrofic conditions, corroborated by a prevalence of the processes of mineralization of the organic matter over primary production and lows values of fitoplankton concentration. On the contrary, in the region of Surgidero of Batabanó, the processes of synthesis of organic matter prevail suggested by a high primary production, and concentration of fitoplankton, with low breathing levels and mineralization of the organic matter, that indicates that the system is behaving autothrofically. In a general way, this sector is very affected by the anthropogenic impact. The information obtained is of great importance for the development of the fishing and tourist industries in the area.
    Description: Published
    Keywords: Phytoplankton ; Water quality ; Primary production ; Chemistry ; Environmental monitoring ; Phytoplankton ; Water quality ; Primary production ; Chemistry ; Environmental monitoring
    Repository Name: AquaDocs
    Type: Proceedings Paper
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  • 3
    Publication Date: 2021-05-19
    Description: The evaluation of the possible environmental changes due to the anthropic impacts that have happened in the last years in this scenario and the redefinition of areas that suffer affectations were carried up. Any environmental alteration of this ecosystem, either of natural or human origin, can have an important economic and social repercussion. According to the proposed chemical and biological indexes, the waters of the Gulf of Batabanó presented mesotrophic conditions with tendency to the eutrofization in four fundamental areas. In the silts of the Gulf the values of organic carbon and sulphidric acid were characteristic of sediments with high concentrations of organic matter. In the coastal sector N, was determinate high concentrations of sulphidric acid and heavy metals, which indicates elevated levels of antrophic affectation. The waters of the reefs of the Gulf showed mesotrophic conditions, while the silts were considered little affected, according to the chemical and biological indexes proposed in this work.
    Description: Instituto de Oceanología de Cuba
    Keywords: Heavy metals ; Environmental impact ; Water quality ; Coastal waters ; Heavy metals ; Environmental impact ; Coastal waters ; Water quality ; Man-induced effects ; Marine pollution
    Repository Name: AquaDocs
    Type: Conference Material
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  • 4
    Publication Date: 2021-05-19
    Description: Durante la incidencia de los frentes fríos de cualquier intensidad en toda la Ensenada de Sibarimar, el movimiento neto del agua sigue el contorno del litoral costero E-W. La circulación marina, además, mantiene fluctuaciones en la dirección perpendicular a la del movimiento medio. Las velocidades máximas de la corriente son altas entre 100-200 cm/s. En condiciones de régimen habitual, la traslación más rápida de los organismos, en dirección paralela a la costa, ocurre desde Guardafronteras hasta Calle 476-478, recorriendo 7 m en 2 min. Durante la acción de frentes fríos, ya sean débiles, moderados o intensos toda la costa será afectada por la deriva, ocurriendo la mayor recala de organismos hacia el W de la Ensenada de Sibarimar.
    Keywords: Marine organisms
    Repository Name: AquaDocs
    Type: Preprint
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