FN Archimer Export Format
PT J
TI Trace metal content from holopelagic Sargassum spp. sampled in the tropical North Atlantic Ocean: Emphasis on spatial variation of arsenic and phosphorus
BT 
AF Gobert, Tristan
   Gautier, Ambre
   Connan, Solène
   Rouget, Marie-Laure
   Thibaut, Thierry
   Stiger-Pouvreau, Valerie
   Waeles, Matthieu
AS 1:1;2:1;3:1;4:2;5:3;6:1;7:1;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 University of Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzane, France
   University of Brest, UMS 3113, IUEM, F-29280, Plouzane, France
   Aix Marseille University and Université de Toulon, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, Marseille, France
C2 UBO, FRANCE
   UBO, FRANCE
   UNIV AIX MARSEILLE, FRANCE
SI BREST
SE PDG-RBE-PFOM
UM LEMAR
IF 8.8
TC 0
UR https://archimer.ifremer.fr/doc/00789/90145/95729.pdf
LA English
DT Article
CR SARGASSES CARAIBES
   SARGASSES TRANSATLANTIQUE
BO Antea
DE ;Holopelagic Sargassum;Arsenic;Phosphorus;Trace Metal;Tropical Atlantic;Caribbean
AB We document for the first time, the spatial distribution at basin scale (North tropical Atlantic Ocean) of As, P and trace metal (TM) concentrations in the three morphotypes belonging to the two holopelagic species Sargassum natans and S. fluitans and three morphotypes: S. natans VIII, S. natans I and S. fluitans III. These samples collected in the North equatorial current (NEC) and in the subtropical Sargasso Sea (sSS) (∼25°N, 60°W) were also compared to coastal samples collected downwind Guadeloupe Island and on the strand of Martinique (mangrove and beach). Along the studied zonal oceanic transect, the highest values of As (range 120–240 μg g−1, dry wet) were found in the sSS area where primary production is highly limited by phosphorus. At these stations, the P content of Sargassum spp. was minimal (range 500–1000 μg g−1, dry wet) as well as the content in Cd and Zn known for their nutrient-like oceanic behaviors and distributions very similar to P. This illustrates for the first time in the natural environment, the higher bioaccumulation of arsenic in Sargassum spp. in P-limiting conditions which is due to the competition in the phosphate transporter between arsenate and phosphate. As compared to samples collected at sea, the Sargassum spp. collected in the strand of Martinique had (1) lower As concentrations (typical range 30–45 μg g−1, dry wet) and (2) much higher Al, Fe, Mn, Cr and Co concentrations, showing a certain ability of Sargassum spp. to be depurated of its As content in the coastal zone following competitive exchange with terrigenous metals. 
PY 2022
PD DEC
SO Chemosphere
SN 0045-6535
PU Elsevier BV
VL 308
IS Part 1
DI 10.1016/j.chemosphere.2022.136186
ID 90145
ER

EF