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| Gremare, A; Amouroux, Jm; Charles, F; Medernach, L; Jordana, E; Nozais, C; Vetion, G; Colomines, Jc. |
| Gross sedimentation rates (GSRs) were monitored together with meteorological data and the main biochemical characteristics of the collected material (i.e. organic content, C, N, total proteins, carbohydrates, lipids and available proteins) over a three year cycle at a shallow station (18 m) of the Bay of Banyuls, France. GSRs were between 0.26 (11/04/92) and 317.75 gDW m(-2) d(-1) (18/02/94). They followed an annual cycle with low and relatively constant values during spring and summer and high, variable Values during fall and winter. During the study GSRs correlated poorly (state of the sea, precipitation) or even non-significantly (wind speed) with the main meteorological parameters. GSRs correlated negatively with the organic content of the material... |
| Tipo: Text |
Palavras-chave: Matière organique particulaire; Qualité; Variabilité temporelle; Zone côtière; Particulate organic matter; Quality; Temporal variability; Coastal zone. |
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00325/43640/43226.pdf |
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| Perez, Fiz F; Gago, Jesus; Alvarez, Marta; Rios, Aida F. |
| The variability of the molar fraction of atmospheric CO2 (xCO(2)(a)) and wind speed and direction were investigated in a coastal embayment located in the west European coast, ria de Vigo, NW Spain, along daily and seasonal time scales. Observations in the ria showed that xCO(2)(a) on a short time scale presented a much wider variability than seawater molar fraction (xCO(2)(w)), in addition, a significant covariation between xCO(2)(a) and wind was found. A sluggish atmospheric renewal due to weak winds was associated with high values of xCO(2)(a), whereas higher oceanic winds renovate the air column with more stable and constrained xCO(2)(a) values (from 350 to 370 ppm). The impact of anomalously high xCO(2)(a) on CO2 air-sea fluxes is practically not... |
| Tipo: Text |
Palavras-chave: Variabilité temporelle; CO2 atmosphérique; Échange air–mer; Côte atlantique espagnole; Temporal variability; Atmospheric CO2; Air-sea exchange; Spanish Atlantic Coast. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00322/43366/42849.pdf |
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| Heral, Maurice; Deslous-paoli, Jean-marc; Prou, Jean; Razet, Daniel. |
| The study of the trophic relations needs to collect data which can best represent the variability of the populations of molluscan and the parameters of the water. For the water, the main parameters which play a role on the production of molluscan in an estuarine area are the temperature, the seston, and the phytoplanctonic biomass. For the temperature is proposed to sample only twice a month. At the contrary for seston variations which are very large on a tidal cycle and correlated with the currents and the waves, it is necessary to take in count this variability. For the phytoplancton, the annual cycle is well characterized, but the variability at a station is depending on the caracteristic of each water masses. The authors suggest that a sampling... |
| Tipo: Text |
Palavras-chave: Estuarine ecosystem; Trophic relationships; Time variations; Sampling strategies; Ecosystème estuarien; Relations trophiques; Variabilité temporelle; Stratégie d'échantillonnage. |
| Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/1987/publication-2868.pdf |
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