IMPORTANCE OF GELATINOUS PLANKTON ORGANISMS IN STORAGE AND TRANSFER OF TRACE-METALS IN THE NORTHWESTERN MEDITERRANEAN - COMPutational PLankton Ecology Accéder directement au contenu
Article Dans Une Revue Marine Ecology Progress Series Année : 1992

IMPORTANCE OF GELATINOUS PLANKTON ORGANISMS IN STORAGE AND TRANSFER OF TRACE-METALS IN THE NORTHWESTERN MEDITERRANEAN

M Romeo
  • Fonction : Auteur
M Gnassiabarelli
  • Fonction : Auteur

Résumé

Concentrations of trace metals (Cd, Cu, Pb, Zn) were determined in gelatinous macroplankton collected from the northwestern Mediterranean Sea. Samples belonging to 4 different phyla - cnidarians, ctenophores, molluscs and tunicates (salps and pyrosomes) - were collected. Some amphipod crustaceans, living on gelatinous organisms, were also analysed, Metal concentrations were basically identical among the different phyla. For the cnidarian Velella velella, differences in cadmium and lead concentrations were noted for organisms of the same weight between those collected near the coast and those from the open sea. In the ctenophore Beroe ovata, copper and zinc concentrations appeared to be independent of weight, whereas some weight-dependency was found in V. velella. The most significant features in the trace metal concentration of salps were the elevated values found either in the viscera ('nuclei') or in the faecal pellets, compared to that found in whole animals. Due to their high defecation rate, salps seem to play an important role in the biogeochemical cycling of trace metals in the sea. Cadmium, copper and zinc linked to faecal material may be rapidly dissolved in the water column, whereas lead does not seem to be recycled.

Domaines

Océanographie
Fichier principal
Vignette du fichier
m082p267.pdf (662.18 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03476515 , version 1 (19-12-2021)

Licence

Paternité

Identifiants

Citer

M Romeo, M Gnassiabarelli, C Carre. IMPORTANCE OF GELATINOUS PLANKTON ORGANISMS IN STORAGE AND TRANSFER OF TRACE-METALS IN THE NORTHWESTERN MEDITERRANEAN. Marine Ecology Progress Series, 1992, 82 (3), pp.267-274. ⟨10.3354/meps082267⟩. ⟨hal-03476515⟩
19 Consultations
34 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More