Chifflet Sandrine, Briant N., Tesan-Onrubia J. A., Zaaboub N., Amri S., Radakovitch O., Banaru D., Tedetti Marc. (2023). Distribution and accumulation of metals and metalloids in planktonic food webs of the Mediterranean Sea (MERITE-HIPPOCAMPE campaign). Marine Pollution Bulletin, 186, 114384 [14 p.]. ISSN 0025-326X.
Titre du document
Distribution and accumulation of metals and metalloids in planktonic food webs of the Mediterranean Sea (MERITE-HIPPOCAMPE campaign)
Année de publication
2023
Auteurs
Chifflet Sandrine, Briant N., Tesan-Onrubia J. A., Zaaboub N., Amri S., Radakovitch O., Banaru D., Tedetti Marc
Source
Marine Pollution Bulletin, 2023,
186, 114384 [14 p.] ISSN 0025-326X
Particle-size classes (7 fractions from 0.8 to 2000 mu m) were collected in the deep chlorophyll maximum along a Mediterranean transect including the northern coastal zone (bays of Toulon and Marseilles, France), the offshore zone (near the North Balearic Thermal Front), and the southern coastal zone (Gulf of Gabe`s, Tunisia). Con-centrations of biotic metals and metalloids (As, Cd, Cr, Cu, Fe, Mn, Ni, Sb, V, Zn) bound to living or dead or-ganisms and faecal pellets were assessed by phosphorus normalisation. Biotic metals and metalloids concentrations (except Cr, Mn, and V) were higher in the offshore zone than in the coastal zones. In addition, biotic Sb and V concentrations appeared to be affected by atmospheric deposition, and biotic Cr concentrations appeared to be affected by local anthropogenic inputs. Essential elements (Cd, Cu, Fe, Mn, Ni, V, Zn) were very likely controlled both by the metabolic activity of certain organisms (nanoeukaryotes, copepods) and trophic structure. In the northern coastal zone, biomagnification of essential elements was controlled by copepods ac-tivities. In the offshore zone, metals and metalloids were not biomagnified probably due to homeostasis regu-latory processes in organisms. In the southern coastal zone, biomagnification of As, Cu, Cr, Sb could probably induce specific effects within the planktonic network.
Plan de classement
Limnologie biologique / Océanographie biologique [034]
;
Pollution [038]
Description Géographique
MEDITERRANEE ; FRANCE ; ESPAGNE ; TUNISIE
Localisation
Fonds IRD [F B010087408]
Identifiant IRD
fdi:010087408
