FN Archimer Export Format
PT J
TI Dissolved and particulate metals (Fe, Zn, Cu, Cd, Pb) in two habitats from an active hydrothermal field on the EPR at 13 degrees N
BT 
AF SARRADIN, Pierre-Marie
   LANNUZEL, D
   WAELES, M
   CRASSOUS, Philippe
   LE BRIS, Nadine
   CAPRAIS, Jean-Claude
   FOUQUET, Yves
   FABRI, Marie-Claire
   RISO, R
AS 1:1;2:1;3:2,3;4:1;5:1;6:1;7:4;8:1;9:2,3;
FF 1:PDG-DOP-DCB-EEP-LEP;2:;3:;4:PDG-DOP-DCB-EEP-LEP;5:PDG-DOP-DCB-EEP-LEP;6:PDG-DOP-DCB-EEP-LEP;7:PDG-DOP-DCB-GM-LGM;8:PDG-DOP-DCB-EEP-LEP;9:;
C1 IFREMER, Ctr Brest, Dept Etud Ecosyst Profonds, F-29280 Plouzane, France.
   UBO, Lab Chim Marine, F-29280 Plouzane, France.
   CNRS, UMR 7144, F-29280 Plouzane, France.
   IFREMER, Ctr Brest, Dept Geosci Marines, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   UBO, FRANCE
   CNRS, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-DOP-DCB-EEP-LEP
   PDG-DOP-DCB-GM-LGM
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.579
TC 27
UR https://archimer.ifremer.fr/doc/2008/publication-3830.pdf
LA English
DT Article
DE ;Hydrothermal fauna;Habitats;Particulate;Dissolved;Metals
AB The distribution of Fe, Cu, Zn, Pb, Cd between the dissolved (<2 mu m) and the particulate (>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 >2 mu m fraction results from the settlement and accumulation of particulate matter close to the organisms, acting as a secondary metal source. The enrichment observed in the dissolved fraction can be related to the dissolution or oxidation of particles (mainly polymetallic sulfide) or to the presence of small particles and large colloids not retained on the 2 mu m frit. SEM observations indicate that the bulk particulate observed is characteristic of crystalline particles settling rapidly from the high temperature smoker (sphalerite, wurtzite and pyrite), amorphous structures and eroded particles formed in the external zone of the chimney. Precipitation of Zn, Cu, Cd and Ph with Fe as wurtzite, sphalerite and pyrite is the main process taking place within the area studied and is semi-quantitative. The distribution of the dominant observed fauna has been related to the gradient resulting from the dilution process, with the alvinellids worms colonizing the hotter and more variable part of the mixing zone, but also to the metallic load of the mixing zone. Dissolved and particulate metal concentrations are therefore necessary abiotic factors to be studied in a multiparametric approach to understand the faunal distribution in hydrothermal ecosystems. (C) 2007 Elsevier B.V. All rights reserved.
PY 2008
PD MAR
SO Science of The Total Environment
SN 0048-9697
PU Elsevier
VL 392
IS 1
UT 000253585000013
BP 119
EP 129
DI 10.1016/j.scitotenv.2007.11.015
ID 3830
ER

EF