RT Journal Article
T1 What dead seaweeds can tell us about metal uptake and their application to control marine pollution
A1 Vázquez Arias, Antón
A1 Aboal Viñas, Jesús
A1 Fernández Escribano, José Ángel
K1 Biomonitoring
K1 Heavy metal
K1 Water pollution
K1 Marine pollution
K1 Macroalgae
AB The mechanisms of trace element uptake by seaweeds are still unknown, despite being key to understand the impact of pollution in coastal environments. This knowledge gap, in addition to the lack of standardization, have also hindered the use of seaweeds to monitor seawater pollution. To address these shortcomings, we tested the use of devitalization as a pre-exposure treatment for brown seaweed transplants, and we compared devitalized and fresh transplants to gain some insights into the mechanisms of element uptake. We exposed four types of Fucus vesiculosus transplants in 6 sites for 4, 8 and 20 days: fresh and devitalized (dried or boiled) algal segments held in mesh bags, and whole algal thalli imitating natural conditions. We then determined he concentrations of 11 trace elements in the algal tissues. The element concentrations were highest in the devitalized transplants, but the material lost consistency and weight throughout the exposure period, limiting their use to short periods. We proposed several factors that may contribute to the different accumulation patterns between treatments, and examined the implications for the uptake mechanisms, revealing that two of the most important are surface adsorption of sediment particles and chemical bounds to extracellular components
PB Elsevier
SN 0304-3894
YR 2023
FD 2023-08-03
LK http://hdl.handle.net/10347/31250
UL http://hdl.handle.net/10347/31250
LA eng
NO Journal of Hazardous Materials 459 (2023) 132216
NO This study is part of the project PID2022–142802NB-I00 awarded by the Spanish Ministerio de Ciencia e Innovación. The authors belong to the Grupo de Referencia Competitiva GRC GI-1252/GPC2020–23 (ED431C 2020/19) which is co-funded by ERDF (EU). A. Vázquez-Arias is grateful to the Spanish Ministerio de Ciencia, Innovación y Universidades for a grant awarded within the Programa de Formacion de Profesorado Universitario (grant number FPU19/01989)
DS Minerva
RD 28 abr 2026