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Distribución del nitrito en las aguas costeras ecuatorianas 20
Trejos de Suescum, R.; Okuda, T..
Este trabajo fue realizado con el fin de analizar la distribución regional y vertical del nitrito máximo en relación con las características hidroquímicas y la posible existencia de un segundo máximo de nitrito en las aguas costeras del Ecuador, y está basado en los datos obtenidos a través de varios cruceros de investigación realizados por el Instituto Oceanográfico de la Armada del Ecuador (INOCAR) durante los años comprendidos entre 1973-1980.
Tipo: Journal Contribution Palavras-chave: Distribution; Nitrites; Coastal waters; Distribution; Nitrites; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_5190; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 1983 URL: http://hdl.handle.net/1834/2096
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Prise simultanee de quatre sources d'azote par le microphytobenthos du chenal de Lauzieres (Charente Maritime-France) en ete 5
Collos, Y.
Simultaneous uptake of nitrate, nitrite, ammonium and urea by microphytobenthos incubated in batch mode immediately after sampling do not show any kind of interactions. A linear relationship is found between nitrate uptake and ammonium uptake, the latter values being about 2 to 3 times higher than former. Ammonium uptake was not saturated by a substrate level of 10 mu M, possibly indicating diffusion limited uptake. For all nitrogen sources, the uptake rate was related to the substrate concentration rather than the oxidation state of the nitrogen compounds.
Tipo: Text Palavras-chave: Pond culture; Interactions; Nitrogen compounds; Phytobenthos; Food conversion; Urea; Ammonium compounds; Nitrites; Nitrates.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1532.pdf
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Protocols for the Joint Global Ocean Flux Study (JGOFS) Core Measurements 20
This manual describes the protocol approved by the international Scientific Steering Committee for the Joint Global Ocean Flux Study (JGOFS) for the most of the 20 JGOFS Core Measurements. However, the methods for the analysis of various parameters of the seawater CO2 system are described in a separate handbook. In order to have a complete set of the JGOFS measurements protocols, you should request a copy of the "Handbook of Methods for the Analysis of the Various Parameters of the Carbon Dioxide System in Seawater"version 2, A.G. Dickson and C. Goyet, eds. ORNL/CDIAC-74.
Tipo: Book Palavras-chave: Oceanography; Ocean circulation; Oceanographic stations; Oceanographic data; Oceanographic surveys; Samples; Sampling; Data processing; Data; Data collections; Quality control; Salinity measurement; Oxygen; Inorganic carbon; Nitrites; Nitrates; Phosphorus compounds; Phosphorus cycle; Silicate minerals; Marine organisms; Microorganisms; Bacteriology; Bacteria; Zooplankton; Sampling; Nitrites; Nitrates; Zooplankton; Data processing; Data; Oxygen; Microorganisms; Bacteriology; Bacteria; Http://aims.fao.org/aos/agrovoc/c_6774; Http://aims.fao.org/aos/agrovoc/c_5190; Http://aims.fao.org/aos/agrovoc/c_5187; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_10289; Http://aims.fao.org/aos/agrovoc/c_49816; Http://aims.fao.org/aos/agrovoc/c_5477; Http://aims.fao.org/aos/agrovoc/c_4807; Http://aims.fao.org/aos/agrovoc/c_768; Http://aims.fao.org/aos/agrovoc/c_765.
Ano: 1994 URL: http://hdl.handle.net/1834/2795
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Variations des teneurs en chlorophylle <a> et en sels nutritifs dans la lagune de l'Ichkeul 20
Chaouachi, B.; Ben Hassine, O. K.; Lemoalle, J..
Le suivi régulier des teneurs en chlorophylle a et en sels nutritifs dans la lagune de l'Ichkeul durant l’année 1993 a permis de mieux comprendre le fonctionnement de cet écosystème, milieu original et complexe. Les cycles annuels de la chlorophylle et des sels nutritifs montrent des fluctuations importantes, à l'échelle hebdomadaire. Les fortes biomasses phytoplanctoniques sont observées en hiver en période de courant sortant, en opposition avec les concentrations de phosphore réactif dissous qui ne sont notables que dans l’oued Tinja par courant entrant. Les nitrates et nitrites sont en concentrations plus irrégulières, sans saisonnalité marquée. La gamme des concentrations mesurées en 1993 a été comparable à celle observée lors des années précédentes.
Tipo: Journal Contribution Palavras-chave: Nitrites; Chlorophylls; Ecosystems; Nitrates; Phosphates; Phytoplankton; Nitrites; Ecosystems; Nitrates; Phytoplankton; Chlorophylls; Phosphates; Http://aims.fao.org/aos/agrovoc/c_5190; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_5187; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_1577; Http://aims.fao.org/aos/agrovoc/c_35986.
Ano: 2001 URL: http://hdl.handle.net/1834/3701
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