Consulta: creatorFacets:"Lannuzel, D"
Registros recuperados: 2
Data/hora: 12/06/2024 14:00:33

Dissolved and particulate metals (Fe, Zn, Cu, Cd, Pb) in two habitats from an active hydrothermal field on the EPR at 13 degrees N
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Sarradin, Pierre-marie; Lannuzel, D; Waeles, M; Crassous, Philippe; Le Bris, Nadine; Caprais, Jean-claude; Fouquet, Yves; Fabri, Marie-claire; Riso, R.
The distribution of Fe, Cu, Zn, Pb, Cd between the dissolved (&lt;2 mu m) and the particulate (&gt;2 mu m) fractions was measured after in-situ filtration in two hydrothermal habitats. The total metal concentration ranges exhibit a clear enrichment compared with the seawater concentration, accounting for the hydrothermal input for all the metals considered. Iron is the predominant metal (5-50 mu M) followed by Zn and Cu. Cd and Pb are present at the nM level. At the scale studied, the behavior of temperature, pH and dissolved iron is semi-conservative whereas the other dissolved and particulate metals are characterized by non-conservative patterns. The metal enrichment of the &gt;2 mu m fraction results from the settlement and accumulation of particulate...
Tipo: Text
Palavras-chave: Hydrothermal fauna; Habitats; Particulate; Dissolved; Metals.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-3830.pdf

High variability in dissolved iron concentrations in the vicinity of the Kerguelen Islands (Southern Ocean)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Quéroué, F; Sarthou, G; Planquette, H. F.; Bucciarelli, E; Chever, F; Van Der Merwe, P; Lannuzel, D; Townsend, A. T.; Cheize, M.; Blain, S; D'Ovidio, F; Bowie, A. R.
Dissolved Fe (dFe) concentrations were measured in the upper 1300 m of the water column in the vicinity of the Kerguelen Islands as part of the second KErguelen Ocean Plateau compared Study (KEOPS2). Concentrations ranged from 0.06 nmol L-1 in offshore, Southern Ocean waters to 3.82 nmol L-1 within Hillsborough Bay, on the north-eastern coast of the Kerguelen Islands. Direct island runoff, glacial melting and resuspended sediments were identified as important inputs of dFe that could potentially fertilise the northern part of the plateau. A significant deep dFe enrichment was observed over the plateau with dFe concentrations increasing up to 1.30 nmol L-1 close to the seafloor, probably due to sediment resuspension and pore water release. Biological uptake...
Tipo: Dataset
Ano: 2015
URL: http://dx.doi.org/10.17882/40729