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| Relexans, Jc; Lin, Rg; Castel, J; Etcheber, H; Laborde, P. |
| Relationships between benthos and sedimentary organic matter quality were analyzed in the West Gironde Mud Patch (WGMP), on the shelf of the Bay of Biscay, off the Gironde estuary, as part of the multidisciplinary national programme Ecomarge, a JGOFS-France contribution. At three stations located on an east-west transect and at different periods from 1985 to 1988, the following parameters of the sediment were analyzed: POC (particulate organic carbon); SIGMA (sum of easily extractable macromolecules thought to be the most degradable part of particulate organic matter); pigments as indices of organic matter quality; ETS (electron-transport-system) activities and meiofauna densities as indices of benthic responses. Sediments from the WGMP have an overall low... |
| Tipo: Text |
Palavras-chave: BENTHOS; ELECTRON-TRANSPORT-SYSTEM (ETS); MEIOFAUNA; POC QUALITY; ORGANIC MATTER. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/00101/21231/18848.pdf |
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| Lepoupon, C; Lin, Rg; Benaim, Jy; Merks, Aga. |
| The accurate classical batch method of Duursma (1961), based on the conversion of Dissolved Organic Nitrogen (DON) into NH3, is used as a basis for a new automatic DON analyser. After testing different possibilities through mechanical automation of the original batch technique, in which the conversion is preceded by the degassing of NH3 and drying of the sample, the procedure of autoanalyses has been selected. This procedure was simplified to the extent that a compact unit could be constructed, which would easily be applicable on board ship. The automatic method has a conversion phase in which in principle only DON is dissociated to NH4+, whereas both NO2- add NO3- are not reduced. This requires selective conditions and particularly high silver purity for... |
| Tipo: Text |
Palavras-chave: Dissolved organic nitrogen; Analysis; Automation; Reduction; Total nitrogen. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00093/20456/18128.pdf |
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