Persistent organic pollutants in the Olifants River Basin, South Africa : bioaccumulation and trophic transfer through a subtropical aquatic food web
Abstract: This study investigates the trophic transfer of persistent organic pollutants (POPs: PCBs, PBDEs, OCPs and PFASs) in the subtropical aquatic ecosystem of the Olifants River Basin (South Africa) by means of trophic magnification factors (TMFs). Relative trophic levels were determined by sta...
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ftunivantwerpen:c:irua:140560 2023-07-16T03:56:40+02:00 Persistent organic pollutants in the Olifants River Basin, South Africa : bioaccumulation and trophic transfer through a subtropical aquatic food web Verhaert, Vera Newmark, Nadine D' Hollander, Wendy Covaci, Adrian Vlok, Wynand Wepener, Victor Addo-Bediako, Abraham Jooste, Antoinette Teuchies, Johannes Blust, Ronny Bervoets, Lieven 2017 pdf https://hdl.handle.net/10067/1405600151162165141 https://repository.uantwerpen.be/docman/irua/d70b37/140560_2019_02_21.pdf eng eng info:eu-repo/semantics/altIdentifier/doi/10.1016/J.SCITOTENV.2017.02.057 info:eu-repo/semantics/altIdentifier/isi/000398758800076 info:eu-repo/semantics/openAccess 0048-9697 The science of the total environment Chemistry Biology info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/article 2017 ftunivantwerpen https://doi.org/10.1016/J.SCITOTENV.2017.02.057 2023-06-26T22:21:29Z Abstract: This study investigates the trophic transfer of persistent organic pollutants (POPs: PCBs, PBDEs, OCPs and PFASs) in the subtropical aquatic ecosystem of the Olifants River Basin (South Africa) by means of trophic magnification factors (TMFs). Relative trophic levels were determined by stable isotope analysis. POP levels in surface water, sediment and biota were low. Only ∑ DDTs levels in fish muscle (< LOQ-61 ng/g ww) were comparable or higher than values from other temperate and tropical regions. Significant positive relationships between relative trophic level and PCB, DDT and HCH concentrations were observed so trophic levels play an important role in the movement of contaminants through the food web. TMFs were > 1, indicating biomagnification of all detected POPs. Calculated TMFs for PCBs were comparable to TMF values reported from the tropical Congo River basin and lower than TMFs from temperate and arctic regions. For p,p′-DDT, a higher TMF value was observed for the subtropical Olifants River during the winter low flow season than for the tropical Congo river. TMFs of DDTs from the present study were unexpectedly higher than TMFs from temperate and arctic aquatic food webs. The fish species in the aquatic ecosystem of the Olifants River can be consumed with a low risk for POP contamination. Article in Journal/Newspaper Arctic IRUA - Institutional Repository van de Universiteit Antwerpen Arctic Science of The Total Environment 586 792 806 |
institution |
Open Polar |
collection |
IRUA - Institutional Repository van de Universiteit Antwerpen |
op_collection_id |
ftunivantwerpen |
language |
English |
topic |
Chemistry Biology |
spellingShingle |
Chemistry Biology Verhaert, Vera Newmark, Nadine D' Hollander, Wendy Covaci, Adrian Vlok, Wynand Wepener, Victor Addo-Bediako, Abraham Jooste, Antoinette Teuchies, Johannes Blust, Ronny Bervoets, Lieven Persistent organic pollutants in the Olifants River Basin, South Africa : bioaccumulation and trophic transfer through a subtropical aquatic food web |
topic_facet |
Chemistry Biology |
description |
Abstract: This study investigates the trophic transfer of persistent organic pollutants (POPs: PCBs, PBDEs, OCPs and PFASs) in the subtropical aquatic ecosystem of the Olifants River Basin (South Africa) by means of trophic magnification factors (TMFs). Relative trophic levels were determined by stable isotope analysis. POP levels in surface water, sediment and biota were low. Only ∑ DDTs levels in fish muscle (< LOQ-61 ng/g ww) were comparable or higher than values from other temperate and tropical regions. Significant positive relationships between relative trophic level and PCB, DDT and HCH concentrations were observed so trophic levels play an important role in the movement of contaminants through the food web. TMFs were > 1, indicating biomagnification of all detected POPs. Calculated TMFs for PCBs were comparable to TMF values reported from the tropical Congo River basin and lower than TMFs from temperate and arctic regions. For p,p′-DDT, a higher TMF value was observed for the subtropical Olifants River during the winter low flow season than for the tropical Congo river. TMFs of DDTs from the present study were unexpectedly higher than TMFs from temperate and arctic aquatic food webs. The fish species in the aquatic ecosystem of the Olifants River can be consumed with a low risk for POP contamination. |
format |
Article in Journal/Newspaper |
author |
Verhaert, Vera Newmark, Nadine D' Hollander, Wendy Covaci, Adrian Vlok, Wynand Wepener, Victor Addo-Bediako, Abraham Jooste, Antoinette Teuchies, Johannes Blust, Ronny Bervoets, Lieven |
author_facet |
Verhaert, Vera Newmark, Nadine D' Hollander, Wendy Covaci, Adrian Vlok, Wynand Wepener, Victor Addo-Bediako, Abraham Jooste, Antoinette Teuchies, Johannes Blust, Ronny Bervoets, Lieven |
author_sort |
Verhaert, Vera |
title |
Persistent organic pollutants in the Olifants River Basin, South Africa : bioaccumulation and trophic transfer through a subtropical aquatic food web |
title_short |
Persistent organic pollutants in the Olifants River Basin, South Africa : bioaccumulation and trophic transfer through a subtropical aquatic food web |
title_full |
Persistent organic pollutants in the Olifants River Basin, South Africa : bioaccumulation and trophic transfer through a subtropical aquatic food web |
title_fullStr |
Persistent organic pollutants in the Olifants River Basin, South Africa : bioaccumulation and trophic transfer through a subtropical aquatic food web |
title_full_unstemmed |
Persistent organic pollutants in the Olifants River Basin, South Africa : bioaccumulation and trophic transfer through a subtropical aquatic food web |
title_sort |
persistent organic pollutants in the olifants river basin, south africa : bioaccumulation and trophic transfer through a subtropical aquatic food web |
publishDate |
2017 |
url |
https://hdl.handle.net/10067/1405600151162165141 https://repository.uantwerpen.be/docman/irua/d70b37/140560_2019_02_21.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
0048-9697 The science of the total environment |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/J.SCITOTENV.2017.02.057 info:eu-repo/semantics/altIdentifier/isi/000398758800076 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/J.SCITOTENV.2017.02.057 |
container_title |
Science of The Total Environment |
container_volume |
586 |
container_start_page |
792 |
op_container_end_page |
806 |
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1771543170817982464 |