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Trace metals concentration in water hyacinth implicates the saltwater barrage altered hydrography of Kochi backwaters, southwest Coast of India.

Authors :
Arunpandi N
Jyothibabu R
Savitha MKM
Parthasarathi S
Rashid CP
Josna MP
Santhikrishnan S
Sarath S
Balachandran KK
Source :
Marine pollution bulletin [Mar Pollut Bull] 2021 Jul; Vol. 168, pp. 112447. Date of Electronic Publication: 2021 May 07.
Publication Year :
2021

Abstract

This study in the Kochi backwaters (KBW) presents the distribution of 9 trace metals (Fe, Zn, Cu, Mn, Ni, Co, Cr, Cd, Pb) in different parts (root, stolon and leaf) of the common water hyacinth Eichhornia crassipes during three different seasons [Pre-Monsoon (PRM), Southwest Monsoon (SWM), and Northeast Monsoon (NEM)]. The hyacinth was collected from 4 sections upstream of the KBW where a saltwater barrage [Thannermukkom Barrage (TB)] prevents saltwater intrusion. Results showed that regardless of seasons, all the trace metals concentration in different parts of Eichhornia varied in the following order: roots > stolon > leaves. All the trace metals except Fe showed their highest concentration during the PRM when TB introduces stagnancy of the water upstream through flow restrictions. Instead, Fe was high during the SWM associated with increased river influx at that time. Overall results showed that the hydrographical alterations of TB upstream of KBW have clear imprints on the trace metals concentrated in the hyacinth Eichhornia crassipes.<br /> (Copyright © 2021. Published by Elsevier Ltd.)

Details

Language :
English
ISSN :
1879-3363
Volume :
168
Database :
MEDLINE
Journal :
Marine pollution bulletin
Publication Type :
Academic Journal
Accession number :
33971453
Full Text :
https://doi.org/10.1016/j.marpolbul.2021.112447