Trace metal content from holopelagic Sargassum spp. sampled in the tropical North Atlantic Ocean: Emphasis on spatial variation of arsenic and phosphorus
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 a...
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Language: | English |
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Elsevier BV
2022
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Online Access: | https://archimer.ifremer.fr/doc/00789/90145/95729.pdf https://doi.org/10.1016/j.chemosphere.2022.136186 https://archimer.ifremer.fr/doc/00789/90145/ |
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ftarchimer:oai:archimer.ifremer.fr:90145 2023-09-26T15:21:05+02:00 Trace metal content from holopelagic Sargassum spp. sampled in the tropical North Atlantic Ocean: Emphasis on spatial variation of arsenic and phosphorus Gobert, Tristan Gautier, Ambre Connan, Solène Rouget, Marie-laure Thibaut, Thierry Stiger-pouvreau, Valerie Waeles, Matthieu 2022-12 application/pdf https://archimer.ifremer.fr/doc/00789/90145/95729.pdf https://doi.org/10.1016/j.chemosphere.2022.136186 https://archimer.ifremer.fr/doc/00789/90145/ eng eng Elsevier BV https://archimer.ifremer.fr/doc/00789/90145/95729.pdf doi:10.1016/j.chemosphere.2022.136186 https://archimer.ifremer.fr/doc/00789/90145/ info:eu-repo/semantics/openAccess restricted use Chemosphere (0045-6535) (Elsevier BV), 2022-12 , Vol. 308 , N. Part 1 , P. 136186 (9p.) Holopelagic Sargassum Arsenic Phosphorus Trace Metal Tropical Atlantic Caribbean text Article info:eu-repo/semantics/article 2022 ftarchimer https://doi.org/10.1016/j.chemosphere.2022.136186 2023-08-29T22:51:09Z 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. Article in Journal/Newspaper North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Chemosphere 308 136186 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Holopelagic Sargassum Arsenic Phosphorus Trace Metal Tropical Atlantic Caribbean |
spellingShingle |
Holopelagic Sargassum Arsenic Phosphorus Trace Metal Tropical Atlantic Caribbean Gobert, Tristan Gautier, Ambre Connan, Solène Rouget, Marie-laure Thibaut, Thierry Stiger-pouvreau, Valerie Waeles, Matthieu Trace metal content from holopelagic Sargassum spp. sampled in the tropical North Atlantic Ocean: Emphasis on spatial variation of arsenic and phosphorus |
topic_facet |
Holopelagic Sargassum Arsenic Phosphorus Trace Metal Tropical Atlantic Caribbean |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Gobert, Tristan Gautier, Ambre Connan, Solène Rouget, Marie-laure Thibaut, Thierry Stiger-pouvreau, Valerie Waeles, Matthieu |
author_facet |
Gobert, Tristan Gautier, Ambre Connan, Solène Rouget, Marie-laure Thibaut, Thierry Stiger-pouvreau, Valerie Waeles, Matthieu |
author_sort |
Gobert, Tristan |
title |
Trace metal content from holopelagic Sargassum spp. sampled in the tropical North Atlantic Ocean: Emphasis on spatial variation of arsenic and phosphorus |
title_short |
Trace metal content from holopelagic Sargassum spp. sampled in the tropical North Atlantic Ocean: Emphasis on spatial variation of arsenic and phosphorus |
title_full |
Trace metal content from holopelagic Sargassum spp. sampled in the tropical North Atlantic Ocean: Emphasis on spatial variation of arsenic and phosphorus |
title_fullStr |
Trace metal content from holopelagic Sargassum spp. sampled in the tropical North Atlantic Ocean: Emphasis on spatial variation of arsenic and phosphorus |
title_full_unstemmed |
Trace metal content from holopelagic Sargassum spp. sampled in the tropical North Atlantic Ocean: Emphasis on spatial variation of arsenic and phosphorus |
title_sort |
trace metal content from holopelagic sargassum spp. sampled in the tropical north atlantic ocean: emphasis on spatial variation of arsenic and phosphorus |
publisher |
Elsevier BV |
publishDate |
2022 |
url |
https://archimer.ifremer.fr/doc/00789/90145/95729.pdf https://doi.org/10.1016/j.chemosphere.2022.136186 https://archimer.ifremer.fr/doc/00789/90145/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Chemosphere (0045-6535) (Elsevier BV), 2022-12 , Vol. 308 , N. Part 1 , P. 136186 (9p.) |
op_relation |
https://archimer.ifremer.fr/doc/00789/90145/95729.pdf doi:10.1016/j.chemosphere.2022.136186 https://archimer.ifremer.fr/doc/00789/90145/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.chemosphere.2022.136186 |
container_title |
Chemosphere |
container_volume |
308 |
container_start_page |
136186 |
_version_ |
1778145540386586624 |