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| Registros recuperados: 47 | |
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| Fernández, M.B.; Cucchi Colleoni, A.D.. |
| Chemical aspects of the San Jorge Gulf benthic system, Argentina (2005-2010). A new contribution on the chemical aspects of the San Jorge Gulf benthic system in the distribution area of shrimp Pleoticus muelleri (Spence Bate, 1888) during 2005-2010 is presented. Concentration of dissolved oxygen in bottom water and mix layer and of total organic matter (TOM), total organic carbon (TOC), total nitrogen (TN), chlorophyll a (Chl a) and phaeopigments (Phaeo) in surficial sediments were analyzed. The origin and nutritional value of TOM deposited were also assessed through the C:N ratio. Water samples were collected during the Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) seasonal research cruises in the period 2005-2010. Sediment samples... |
| Tipo: Journal Contribution |
Palavras-chave: Chemical composition; Sediments; Dissolved oxygen; Sea water. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5506 |
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| Brum,Paulo R.; Farjalla,Vinicius F.; Gonçalves Jr.,José F.; Santos,Anderson M. dos; Pôrto,Maurício T.; Vieira,Elisa D. R.; Ferreira,Flávia M.; Bianchini Jr.,Irineu. |
| In this work, we describe qualitative and quantitative aspects of the cycling of detritus of aquatic macrophytes and carbohydrates in two coastal lagoons of the northeastern part of the State of Rio de Janeiro. Samples of water of the Imboassica and Cabiúnas lagoons were enriched with sucrose. Samples of water of the Cabiúnas lagoon were also utilized to arrange mineralization chambers with fragments of three species of aquatic macrophytes found in these lagoons (Typha domingensis, Potamogeton stenostachys and Nymphaea ampla). Following that, the bottles were aerated and incubated (in the laboratory) for a period of 8 days. The concentrations of dissolved oxygen, the pH, the electrical conductivity and the temperature were daily measured. The anaerobic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Decomposition; Aerobic mineralization; Dissolved oxygen; Coastal lagoons; Aquatic macrophytes. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000400008 |
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| Valencia T., M.; Rodríguez de Moran, A.; Vega, M.. |
| Se presentan las características hidroquímicas de las aguas de las Bahías Chile, Almirantazgo y Fildes, en las Islas del Archipiélago Shetland del Sur, en base a la distribución horizontal y vertical de los parámetros: Oxígeno disuelto, salinidad y micronutrientes inorgánicos (fosfato, nitrito, nitrato y silicato). En forma general, se observa aguas bién oxigenadas, con salinidad relativamente baja, especialmente en la capa superficial, parámetro influenciado por el aporte de aguas de deshielo de los glaciares cercanos. Igualmente alta concentración relativa de micronutrientes inorgánicos, con escasa estratificación de los mismos. |
| Tipo: Journal Contribution |
Palavras-chave: Water analysis; Vertical distribution; Horizontal distribution; Dissolved oxygen; Salinity; Nutrients (mineral); Dissolved oxygen; Water analysis; Salinity; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_16064; Http://aims.fao.org/aos/agrovoc/c_6751. |
| Ano: 1993 |
URL: http://hdl.handle.net/1834/3768 |
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| Rodríguez de Moran, A.; Valencia T., M.; Vega, M.. |
| Se presentan las características hidroquímicas de las aguas de las Bahías Chile, Almirantazgo y Fildes, en las Islas del Archipiélago Shetland del Sur, en base a la distribución horizontal y vertical de los parámetros: Oxígeno disuelto, salinidad y micronutrientes inorgánicos (fosfato, nitrito, nitrato y silicato). En forma general, se observa aguas bién oxigenadas, con salinidad relativamente baja, especialmente en la capa superficial, parámetro influenciado por el aporte de aguas de deshielo de los glaciares cercanos. Igualmente alta concentración relativa de micronutrientes inorgánicos, con escasa estratificación de los mismos. |
| Tipo: Journal Contribution |
Palavras-chave: Water analysis; Vertical distribution; Horizontal distribution; Dissolved oxygen; Salinity; Nutrients (mineral); Dissolved oxygen; Water analysis; Salinity. |
| Ano: 1993 |
URL: http://hdl.handle.net/1834/3768 |
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| Valencia Trejo, M.. |
| El presente trabajo brinda información detallada de las concentraciones de parámetros químicos, oxígeno disuelto y micronutrientes inorgánicos, fosfato, nitrito, nitrato y silicato, de las aguas del Estrecho Bransfield, a partir del análisis químico de las muestras de agua obtenidas durante la Primera Expedición Ecuatoriana a la Antártica a bordo del BAE ORION del Instituto Oceanográfico de la Armada del Ecuador. Las muestras se tomaron en el lapso comprendido entre el 8 y el 25 de enero de 1988, utilizando para ello una roseta multimuestreadora, realizándose el análisis de oxígeno disuelto por el método de Winkler y los elementos nutritivos, utilizando los métodos descritos en el Manual de Strickland y Parsons. Para el análisis de la información se... |
| Tipo: Journal Contribution |
Palavras-chave: Chemical oceanography; Dissolved oxygen; Nutrients (mineral); Chemical analysis; Dissolved oxygen; Chemical oceanography; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_1516. |
| Ano: 1989 |
URL: http://hdl.handle.net/1834/3870 |
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| Carrillo, P.. |
| El análisis de parámetros químicos que permitan establecer tendencias de los mismos durante la ocurrencia de eventos climáticos es limitado; como aporte al conocimiento del comportamiento del oxígeno disuelto durante los eventos El Niño. Se comparan un total de 2282 datos de temperatura y concentraciones de oxígeno disuelto en la estación Fija La Libertad desde 1988 hasta el 2010 y 1464 datos de temperatura y concentraciones de oxígeno disuelto en Manta desde 1991 hasta el 2010. Se elaboraron gráficos de distribución en superficie y en la columna de agua, notándose que en las dos estaciones fijas costeras a nivel superficial las concentraciones del oxígeno disuelto son menores al presentarse eventos cálidos, y en especial durante los El Niño extremos como... |
| Tipo: Journal Contribution |
Palavras-chave: Dissolved oxygen; El Nino phenomena; Parameters; Temperature data; Levels; Fixed stations. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4655 |
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| Carrillo, P.. |
| This article was intended to contribute to the knowledge of the behavior of Dissolved Oxygen in the water column that appeared in the ecuadorian fixed stations in La Libertad and Manta, average monthly values were obtained and the maximum at different depth monitored and shown to be 75 meters in the years when "El Niño" events appeared, the highest concentrations were found monthly in the two fixed stations, allowing behavioral tendencies contribute to a chemical parameter, to warn the start of warm event. |
| Tipo: Journal Contribution |
Palavras-chave: Dissolved oxygen; El Nino phenomena; Fixed stations. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5749 |
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| Ciavatta, S.; Kay, S.; Saux-picart, S.; Butenschon, M.; Allen, J. I.. |
| This paper presents the first decadal reanalysis simulation of the biogeochemistry of the North West European shelf, along with a full evaluation of its skill, confidence, and value. An error-characterized satellite product for chlorophyll was assimilated into a physical-biogeochemical model of the North East Atlantic, applying a localized Ensemble Kalman filter. The results showed that the reanalysis improved the model simulation of assimilated chlorophyll in 60% of the study region. Model validation metrics showed that the reanalysis had skill in matching a large data set of in situ observations for 10 ecosystem variables. Spearman rank correlations were significant and higher than 0.7 for physical-chemical variables (temperature, salinity, and oxygen),... |
| Tipo: Text |
Palavras-chave: Marine ecosystems; Data assimilation; Ocean color; Air-sea flux of carbon dioxide; Dissolved oxygen; Marine policy. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00383/49422/49850.pdf |
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| Menesguen, Alain; Dussauze, Morgan; Dumas, Franck; Thouvenin, Benedicte; Garnier, Valerie; Lecornu, Fabrice; Repecaud, Michel. |
| European directives (Water Framework Directive - WFD and Marine Strategy Framework Directive - MSFD) require a regular survey of several descriptors of the Environmental Status of coastal waters of the North-east Atlantic Ocean. Especially for the MSFD, which may concern large continental shelf areas where measurements are scarce, realistic ecological models can help assessing the Environmental Status. The ECO-MARS3D model of the pelagic ecosystem of the Bay of Biscay and English Channel continental shelf (NE Atlantic) has been developed for these applied purposes and validated against various types of historic data. This first paper deals with the basic biogeochemical version, which contains inorganic nutrients (NH4, NO3, PO4, Si(OH)4), three... |
| Tipo: Text |
Palavras-chave: Ecological 3D model; Continental shelf; Bay of Biscay and English Channel; Surface chlorophyll; Dissolved oxygen; MSFD. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00469/58098/60510.pdf |
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| Registros recuperados: 47 | |
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