ECOMARGE: Flux of particulate matter in the northwestern Mediterranean (golfe du Lion)
| Type | Article | ||||||||
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| Date | 1988 | ||||||||
| Language | English | ||||||||
| Author(s) | Heussner S, Monaco A, Fowler S W, Buscail R, Millot C, Bojanowski R | ||||||||
| Meeting | Oceanographie Pelagique Mediterraneene, Villefranche-sur-Mer (France), 16-20 Sep 1988 | ||||||||
| Source | Oceanologica Acta, Special issue (0399-1784) (Gauthier-Villars), 1988 | ||||||||
| Abstract | As part of the multidisciplinary programme ECOMARGE (ECOsysteme des MARGEs continentales) an experiment to measure vertical flux of particles was carried out in the golfe du Lion off Banyuls-sur-Mer (Lacaze-Duthiers canyon) over a period of 17 days in autumn 1983. Sediment traps were deployed at depths of 100, 200 and 315 m in a water column 350 m deep. The trapped material appeared to consist of fine muddy sediment and numerous biogenic debris. Total mass flux increased linearly with depth from 4 g m super(-2) day super(-1) at 100 m to 13 g m super(-2) day super(-1) at 315 m. The lithogenic fraction was predominant at all depths (55 to 60% of total mass flux). Trap-collected fecal pellets were categorized by different shape classes and enumerated. Mass calculations showed that intact pellets accounted for only a small proportion (5%) of the total mass flux at the 3 depths. Sequential leaching of trapped particles showed that Cu was essentially associated with the organic phase. | ||||||||
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