ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    facet.materialart.
    Unknown
    Concentraciones de nutrientes y eutrofización en arrecifes coralinos de los archipiélagos Los Canarreos y Sabana-Camagüey (2008)
    CONyMA
    Details
    Publication Date: 2021-05-19
    Description: Coral reefs are very sensitive to the increment in nitrogen concentrations and phosphorus, since these compounds propitiate the macroalgae growth, resulting in the degradation of coral reefs. With the purpose of assessing the degree of nutriphication of the coral reefs in Los Canarreos Archipelago, located in the periphery of the Gulf of Batabanó, and those located in the outer area of Sabana-Camagüey Archipelago (SCA), three samplings were executed in the reefs of Los Canarreos Archipelago (August 1999, March 2000 and August 2000). In SCA, samplings were done in May 2002 and August 2003. The parameters evaluated were nitrates + nitrite, ammonium, total nitrogen, inorganic phosphorus and total phosphorus. The nutrient contents in the reefs located in the outer border of the Gulf of Batabanó are much higher than those in the Sabana-Camagüey Archipelago, and to the threshold established by Lapointe et al (1992) for inorganic nitrogen (〉1,0 μM/L) and inorganic phosphorus (〉0,1 μM/L), so that the eutrophication processes are developed in coral reef ecosystems. The causes for the higher content of these compounds in the reefs of Los Canarreos Archipelago are related to a high anthropic activity in the Gulf of Batabanó, and also a possibly higher exchange rate of biogenic compounds between the gulf and the adjacent sea than among the different water bodies that conform the SCA and the ocean.
    Description: Published
    Keywords: Coral reefs ; Eutrophication ; Nitrogen ; Phosphorus ; Coral reefs ; Eutrophication ; Nutrients (mineral) ; Nitrogen ; Phosphorus
    Repository Name: AquaDocs
    Type: Proceedings Paper
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
    facet.materialart.
    Unknown
    Evaluacion de factores hidroquimicos indicadores de contaminacion orgánica en la laguna costera del Doctor, Playa Baracoa, Cuba (2008)
    Details
    Publication Date: 2021-05-19
    Description: En la zona costera del municipio Bauta se encuentra la laguna costera el Doctor, cuya calidad se ha visto seriamente dañada por ser receptora de un considerable volumen de residuales crudos (alrededor de 8000 m3) originados por las actividades domésticas de de una Comunidad de alrededor de 5000 habitantes y otras instalaciones comerciales y vivienda que se desarrollan en la margen de la laguna, como consecuencia ocurrió masivas mortandades de peces derivado de las condiciones anóxicas de la laguna (Perigó, et al, 2003, Alcalde et al, 2003). El objetivo de este trabajo es actualizar el conocimiento sobre el estado de la calidad ambiental de la laguna El Doctor a través de variables de estado indicadoras de contaminación orgánica.
    Description: Centro de Investigaciones Marinas.Cuba Instituto de Oceanología de Cuba
    Keywords: Organic wastes ; Environmental impact ; Domestic wastes ; Coastal lagoons ; Coastal lagoons ; Brackishwater pollution ; Organic wastes ; Environmental impact ; Domestic wastes
    Repository Name: AquaDocs
    Type: Conference Material
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 3
    facet.materialart.
    Unknown
    Calidad ambiental de la zona costera del Golfo de Batabanó, Cuba (2008)
    CONyMA
    Details
    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 Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 4
    facet.materialart.
    Unknown
    Calidad ambiental y capacidad de autodepuración de la laguna costera El Doctor. Playa Baracoa, Habana, Cuba (2010)
    Instituto de Oceanología
    Details
    Publication Date: 2021-05-19
    Description: Se presenta un diagnóstico sobre la calidad ambiental de la laguna costera El Doctor a partir de las principales variables físico químicas y microbiológicas indicadoras de la contaminación orgánica, su estado trófico e higiénico sanitario en tres campañas de muestreo realizadas en febrero de 2006 y mayo y octubre de 2007. La laguna presenta un alto grado de contaminación orgánica, altos valores de nutrientes, así como, elevadas concentraciones de coliformes totales y fecales, y estreptococos fecales, los cuales, sobrepasan los limites establecidos en las normas cubanas de calidad de agua para usos pesquero y recreativo (NC: 22-99 y NC: 25-99). La principal causa de la contaminación de la laguna son los residuales crudos que llegan a la laguna originados por la Comunidad de los Cocos, los cuales, alcanzan un volumen estimado de 1 000 m3/día y carga contaminante de 250 Kg./día. La mayoría de los impactos ambientales identificados se clasifican como negativos muy altos. La aplicación de un modelo biogeoquímico de calidad de agua indicó que la laguna solo puede autodepurar alrededor de un 20 % de la carga orgánica que recibe. Según la simulación, la eficiencia del sistema de tratamiento bioquímico de los residuales debe ser superior al 80 % para permitir la existencia de vida en la laguna. Se recomienda el empleo de sistemas de tratamiento extensivo de los residuales como laguna de estabilización facultativa o humedales construidos.
    Description: This work presents a diagnosis on the environmental quality of El Doctor coastal lagoon starting from the main physicochemical and microbiological variables indicators of organic pollution, its trophic and hygienic-sanitary state. Three sampling cruises were carried out in February 2006, and May and October 2007. This lagoon shows a high degree of organic pollution; the concentrations of organic matter, nutrients, as well as total and fecal coliforms, and fecal streptococcus are above Cuban water quality standard for fishing and recreational uses (NC: 22-99, NC: 25- 99). The main cause of the lagoon’s pollution state is due to crude wastes originated by Los Cocos community, whose estimated volume is 1 000 m3/day with a polluting load of 250 Kg./day. The application of a biogeochemical model for water quality indicated that the lagoon can only self-depurate around 20 % of the organic load it receives. According to the simulation, the efficiency of the biochemical waste treatment system must be higher than 80 % to allow the existence of life in the lagoon. The use of extensive waste treatment systems is recommended, such as facultative stabilization lagoons or constructed wetlands.
    Description: Published
    Description: diagnóstico ambiental, hidrodinámica, eutrofización, tratamientos, contaminación, environmental diagnosis, hydrodynamics, eutrophication, treatments, pollution
    Keywords: Eutrophication ; Coastal lagoons ; Environmental assessment ; Eutrophication ; Coastal lagoons ; Environmental assessment
    Repository Name: AquaDocs
    Type: Journal Contribution
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 5
    facet.materialart.
    Unknown
    Oxígeno disuelto y materia orgánica en cuerpos de aguas interiores del Archipiélago Sabana-Camagüey, Cuba. (2010)
    Instituto de Oceanología
    Details
    Publication Date: 2021-05-19
    Description: Entre los años 2001 y 2005, fueron evaluados los contenidos de oxígeno disuelto y de materia orgánica en la fase acuosa de las bahías de Cárdenas, Santa Clara, Puerto de Sagua la Grande, San Juan de los Remedios, Buena Vista, Los Perros, Jigüey y La Gloria. En el Puerto de Sagua la Grande y la zona costera de la bahía de Buena Vista se registraron concentraciones de oxígeno disuelto inferiores al valor de saturación en la época de lluvias. Predominaron los montos de materia orgánica expresados en términos de la demanda bioquímica de oxígeno (DBO5) entre 1,0 -2,0 mgO2/L, típicos de agua marina de calidad dudosa para uso pesquero, según la NC-25:99. Las concentraciones más comunes de la demanda química de oxígeno (DQO) al permanganto en medio alcalino fueron superiores a los 2,0 mgO2/L, indicando que existe una tendencia a la contaminación de las agua por materia orgánica. En las bahías de Santa Clara, Los Perros, Jigüey y La Gloria, la materia orgánica es fundamentalmente de origen autóctono. Las restantes bahías son receptoras de cantidades considerables de aguas residuales con escaso o ningún tratamiento, enriqueciendo a las mismas con materia orgánica.
    Description: Between 2001 and 2005, the dissolved oxygen and organic matter contents in the aquous phase were evaluated in the bays of Cárdenas, Santa Clara, Puerto de Sagua la Grande, San Juan de los Remedios, Buena Vista, Los Perros, Jigüey and La Gloria. In Puerto de Sagua la Grande and the coastal zone of Buena Vista Bay, dissolved oxygen concentrations lower than the saturation value were registered in the rainy season. There was a predominance of organic matter quantities expressed in terms of Biochemical Oxigen Demand (BOD5) between 1.0 -2,0 mgO2/L, typical of marine water of doubtful quality for fishing use, according to the NC-25:99. The most common concentrations of the Chemical Oxigen Demand (COD) to permanganate in alkaline medium were higher than 2.0 mgO2/L, indicating that there is a tendency to water pollution by organic matter. In Santa Clara, Los Perros, Jigüey and La Gloria bays, organic matter is fundamentally of autochthonous origin.The remaining bays receive considerable amounts of wastewaters with little or no treatment, that enrich these water bodies with organic matter.
    Description: Published
    Description: Oxígeno, materia orgánica, contaminación, aguas residuales,Oxygen, organic matter, wastewater pollution
    Keywords: Pollution ; Pollution
    Repository Name: AquaDocs
    Type: Journal Contribution
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 6
    facet.materialart.
    Unknown
    Evaluación de las zonas con impacto antrópico del Golfo de Batabanó, Cuba. Empleo de indices de calidad (2008)
    Details
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 7
    facet.materialart.
    Unknown
    Compuestos de nitrógeno y fósforo en las aguas superficiales de tres zonas de la plataforma marina cubana (2010)
    Instituto de Oceanología
    Details
    Publication Date: 2021-05-19
    Description: Entre los años 1990 y 1991 se estudió el Golfo de Guacanayabo, desde 1998 hasta 2003 se evaluó el Golfo de Batabanó y el Archipiélago Sabana Camagüey fue investigado en la etapa 2001-2005, con el objetivo de evaluar los contenidos de nitrógeno y fósforo en estas tres regiones de la plataforma marina cubana y establecer las relaciones existentes entre ambos nutrientes. Los golfos de Guacanayabo y Batabanó poseen un mayor potencial de nitrógeno y fósforo que el ecosistema costero Sabana-Camagüey, debido al menor desarrollo de la red fluvial en este ecosistema, aunque en las tres regiones las concentraciones de estos compuestos están bajo una acentuada influencia antropogénica. La relación nitrógeno total-fósforo total N.T./P.T., mostró una tendencia a decrecer en regiones con cobertura de pastos marinos, atribuido a las cantidades de fósforo que aportar los mismos a la matriz agua, aunque predominaron los valores en que ninguno de los nutrientes es restrictivo y a diferencia de la relación nitrógeno total inorgánico-fósforo inorgánico NTI/P no tiene un patrón bien definido en los diferentes períodos climáticos
    Description: The Gulf of Guacanayabo was studied in 1990 and 1991. The Gulf of Batabanó was evaluated from 1998 to 2003, and Sabana-Camagüey Archipelago was investigated in the stage 2001-2005. The objective of these researches was to evaluate nitrogen and phosphorus contents in these three regions of Cuban marine shelf and to establish the relations existing between both nutrients. The gulfs of Guacanayabo and Batabanó have a greater nitrogen and phosphorus potential than Sabana-Camagüey coastal ecosystem, due to the lesser development of the fluvial network in this ecosystem; although in the three regions the concentrations of these compounds receive a marked anthropogenic influence. The total nitrogen-total phosphorus ratio, N.T./P.T., showed a tendency to decrease in regions with seagrass cover, attributed to the amounts of phosphorus that this biotope contributes to the water matrix, although the predominant values were those in which none of the nutrients is restrictive, and unlike the total inorganic nitrogen-inorganic phosphorus ratio, NTI/P, it does not have a well-defined pattern in the different climatic periods.
    Description: Published
    Description: nitrógeno, fósforo, eutroficación, nitrogen, phosphorus, eutrophication
    Keywords: Eutrophication ; Nitrogen ; Phosphorus ; Eutrophication ; Nitrogen ; Phosphorus ; Man-induced effects ; Archipelagoes
    Repository Name: AquaDocs
    Type: Journal Contribution
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 8
    facet.materialart.
    Unknown
    Compuestos de nitrógeno y fósforo en agua de algunas bahías del Archipiélago Sabana-Camagüey, Cuba. (2010)
    Details
    Publication Date: 2021-05-19
    Description: El Archipiélago Sabana – Camagüey es una de las regiones más estudiadas de la plataforma marina cubana. Entre los años 2001-2005 se evaluaron los contenidos de nitratos más nitrito, amonio, nitrógeno total, fósforo inorgánico y fósforo total, y se establecieron las relaciones nitrógeno total inorgánico & fósforo inorgánico N/P y nitrógeno total & fósforo total NT/PT, en las bahías de Cárdenas, Santa Clara Oeste, Puerto de Sagua la Grande, San Juan de los Remedios, Buenavista, Los Perros, Jigüey y La Gloria. El amonio fue la principal fuente de nitrógeno inorgánico y los contenidos de nitrógeno orgánico evidenciaron el predominio de los procesos de biosíntesis. Las relaciones N/P y NT/PT fueron superiores a 16:1 en la mayoría de las bahías estudiadas, indicando que el fósforo fue restrictivo para los productores primarios excepto en la bahía de San Juan de los Remedios.
    Description: The Sabana – Camagüey Archipelago is one of the studied regions more of the Cuban marine shelf. the bays Cárdenas, Santa Clara Oeste, Puerto de Sagua la Grande, San Juan de los Remedios, Buenavista, Los Perros, Jigüey and La Gloria were evaluated between years 2001 and 2005 the contents of nitrate more nitrito, ammonium, total nitrogen, inorganic phosphorus and total phosphorus and established the rates inorganic total nitrogen & inorganic phosphorus N/P and total nitrogen & total phosphorus NT/PT. The most important source inorganic nitrogen was the ammonium and the organic nitrogen contents confirmed the predominance of the biosynthesis processes. In the majority of the studied bays the rates N/P and NT/PT were higher than 16:1, the primary producers were limiting for phosphorus except in San Juan de los Remedios bay.
    Description: amonio, nitrógeno, fósforo y bahías.
    Keywords: Nitrogen ; Phosphorus ; Ammonium compounds ; Ammonium compounds ; Nitrogen ; Phosphorus ; Bays
    Repository Name: AquaDocs
    Type: Preprint
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...