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  • Water quality  (2)
  • 1
    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
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2021-05-19
    Description: Una de las causas que puede haber incidido de forma negativa en las poblaciones de langosta en el Golfo de Batabanó, son los cambios en la calidad ambiental del medio. Por tal motivo, se estudia el comportamiento de un conjunto de variables abióticas y bióticas y se compara con la información histórica existente que se remonta a la década de los años ’60. El estudio abarca dos matrices, aguas y sedimentos de fondo, en las especialidades de química, microbiología y fitoplancton. La salinidad mostró una baja variabilidad y valores elevados con una media de 38.64 ups, lo cual es de esperar teniendo en cuenta la gran sequía que sufrió el País durante muchos meses. El oxígeno disuelto mostró concentraciones normales para este tipo de ecosistema y valores por encima del por ciento de saturación. En el área evaluada predominaron los sedimentos en la mayoría de las fueron fondos fangosos con cierta cantidad de arena, de color blanco-gris, presentando en algunos casos olor a sulfhídrico.Teniendo en cuenta los indicadores, tanto químicos (DBO5, NT, PO4 y PT) como biológicos (bacterias heterótrofas y DMO en aguas y sedimentos, Pp, Pp/R y estructura de la comunidad fitoplanctónica), la zona al E de la Isla de la Juventud presentó, en general, mejores condiciones ambientales que la ubicada en las cercanías de La Coloma, aunque cada estación mostró sus particularidades en cuanto al comportamiento de cada uno de los parámetros evaluados.
    Description: One of the causes that have impacted in a negative way in lobster populations in the Gulf of Batabanó, are changes in environmental quality. For such a reason, it is studied the behaviour of a group of abiotic and biotic variables and were compared with the existent historical information since the decade of the years' 60. The study embraces the chemistry, microbiology and phytoplankton in two fundamental matrixes, waters and bottom sediments. The salinity showed a low variability and high values with a mean of 38.64 ups. The dissolved oxygen and the percent of saturation showed normal values. The sediments in most of the stations were muddy funds with certain quantity of sand of different diameter, of white-grey colour, presenting in some cases sulphidric odor. The application of specific chemical and biological indexes, show that the E area of the Juventud Island presented better environmental conditions that the proximities of La Coloma, although each station showed their particularities as for the behaviour of each one of the evaluated parameters.
    Description: Published
    Description: langosta espinosa, calidad ambiental, aguas, sedimentos, química, microbiología, fitoplancton, lobster, environmental quality, waters, bottom sediments, chemistry, microbiology, phytoplankton.
    Keywords: Water quality ; Water quality
    Repository Name: AquaDocs
    Type: Journal Contribution
    Location Call Number Limitation Availability
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