Ecological risk assessment of metal pollutants in two agriculturally impacted estuaries.

Biomonitoring Contamination Gamtoos Estuary Kromme Estuary Pollution indices

Journal

Marine pollution bulletin
ISSN: 1879-3363
Titre abrégé: Mar Pollut Bull
Pays: England
ID NLM: 0260231

Informations de publication

Date de publication:
Oct 2023
Historique:
received: 22 06 2023
revised: 07 09 2023
accepted: 20 09 2023
pubmed: 28 9 2023
medline: 28 9 2023
entrez: 27 9 2023
Statut: ppublish

Résumé

A focused diagnosis of ecosystem health in two South African estuaries (Kromme and Gamtoos) was conducted. Four pollution indices were used, i.e., geoaccumulation (Igeo), ecological risk (RI), contamination factor (CF) and pollution load index (PLI), to assess toxicity levels of metal contaminants in relation to background values. The Igeo results (11.1 %) can be classified as contaminated, with Cd, the only element with high values in both estuaries. Likely sources (herbicides, pesticides) of Cd are used in the agricultural dominated catchments. There was a high concentration of Mn (13.4 ± 2.51 and 12.3 ± 1.13 μg·g

Identifiants

DOI: 10.1016/j.marpolbul.2023.115572 PMID: 37757718
pubmed: 37757718
pii: S0025-326X(23)01007-X
doi: 10.1016/j.marpolbul.2023.115572
pii:
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

115572

Informations de copyright

Copyright © 2023 The Author(s). Published by Elsevier Ltd.. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Auteurs

Aldwin Ndhlovu (A)

Department of Zoology, Nelson Mandela University, Gqeberha 6031, South Africa; DSI/NRF Research Chair in Shallow Water Ecosystem, Institute of Coastal and Marine Research, Nelson Mandela University, Gqeberha 6031, South Africa; South African Environmental Observation Network, Elwandle Node, Gqeberha 6031, South Africa; Scientific Services, South African National Parks, Sedgefield 6573, South Africa. Electronic address: aldwynstav@gmail.com.

Lucienne R D Human (LRD)

Department of Botany, Nelson Mandela University, Gqeberha 6031, South Africa; South African Environmental Observation Network, Elwandle Node, Gqeberha 6031, South Africa.

Janine B Adams (JB)

Department of Botany, Nelson Mandela University, Gqeberha 6031, South Africa; DSI/NRF Research Chair in Shallow Water Ecosystem, Institute of Coastal and Marine Research, Nelson Mandela University, Gqeberha 6031, South Africa.

Gavin M Rishworth (GM)

Department of Zoology, Nelson Mandela University, Gqeberha 6031, South Africa; DSI/NRF Research Chair in Shallow Water Ecosystem, Institute of Coastal and Marine Research, Nelson Mandela University, Gqeberha 6031, South Africa.

Chijioke Olisah (C)

Department of Botany, Nelson Mandela University, Gqeberha 6031, South Africa; DSI/NRF Research Chair in Shallow Water Ecosystem, Institute of Coastal and Marine Research, Nelson Mandela University, Gqeberha 6031, South Africa; South African Environmental Observation Network, Elwandle Node, Gqeberha 6031, South Africa; Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5/753, 625 00 Brno, Czech Republic.

Thomas G Bornman (TG)

Department of Botany, Nelson Mandela University, Gqeberha 6031, South Africa; South African Environmental Observation Network, Elwandle Node, Gqeberha 6031, South Africa.

Classifications MeSH