Ecotoxicological effects of fluvial eroded bitumen sediments from the Alberta oil sands to model aquatic species
To fully understand the ecological and cumulative effects of mining activities on the surrounding aquatic systems of the Canadian oil sands region, it is essential to understand the consequences of exposure to bitumen-containing soils/sediment from natural geomorphological processes. Both physical a...
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Online Access: | http://hdl.handle.net/10773/37061 https://doi.org/10.1016/j.scitotenv.2022.160592 |
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ftria:oai:ria.ua.pt:10773/37061 2023-06-11T04:10:07+02:00 Ecotoxicological effects of fluvial eroded bitumen sediments from the Alberta oil sands to model aquatic species Cardoso, Diogo N. Gonçalves, Sandra F. Silva, Ana Rita R. Soares, Amadeu M. V. M. Wrona, Frederick J. Loureiro, Susana 2025-03-01 http://hdl.handle.net/10773/37061 https://doi.org/10.1016/j.scitotenv.2022.160592 eng eng Elsevier info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50017%2F2020/PT info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50017%2F2020/PT LA/P/0094/2020 info:eu-repo/grantAgreement/FCT/CEEC IND 2018/CEECIND%2F01190%2F2018%2FCP1559%2FCT0006/PT 0048-9697 http://hdl.handle.net/10773/37061 doi:10.1016/j.scitotenv.2022.160592 1879-1026 160592 embargoedAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Bitumen elutriate toxicity Natural contamination Weathered bitumen Fluvial erosion article 1482 ftria https://doi.org/10.1016/j.scitotenv.2022.160592 2023-04-19T00:09:49Z To fully understand the ecological and cumulative effects of mining activities on the surrounding aquatic systems of the Canadian oil sands region, it is essential to understand the consequences of exposure to bitumen-containing soils/sediment from natural geomorphological processes. Both physical and chemical stress on aquatic biota can potentially result from exposure to natural bitumen, resulting from hillslope erosional processes and slumping of bankside soils into the rivers, affecting both riverbed habitat and water quality. The magnitude and duration of bitumen-containing soil's fluvial soils/erosional input into receiving watersheds depends on the interannual variability in the regional hydroclimatology and related seasonal and extreme flow events. The primary objective of this study was to evaluate the potential ecotoxicological effects associated with erosional input of riverbank bitumen soils using controlled exposures. A series of integrated, laboratory-based ecotoxicological bioassays were conducted using organisms with different ecological and functional traits (Daphnia magna (Cladocera), Physa acuta (Gastropoda), and Aliivibrio fischeri (Bacteria)). All model organisms were exposed to elutriates produced from natural bitumen from four different regional rivers: fresh bitumen from shoreline outcrops at the Steepbank River upper and lower reaches (STB-CF and STB-MF, respectively) and the lower-Ells River (EL-MF) and aged, fluvially processed/weathered bitumen from the shoreline of the Athabasca River (ATB-MF). All tested organisms responded negatively to STB-MF and EL-MF elutriates. Low toxicity was also observed in the STB-CF and ATB-MF samples. These results follow the chemical analysis of the parental material and elutriates, where higher levels of metals, polycyclic aromatic compounds and naphthenic acids were detected in the EL-MF sample. In summary, this study shows that eroded and transported bitumen-containing soils and sediments could be a natural source of contaminant exposure to aquatic ... Article in Journal/Newspaper Athabasca River Repositório Institucional da Universidade de Aveiro (RIA) Athabasca River Ells River ENVELOPE(-111.669,-111.669,57.300,57.300) Steepbank River ENVELOPE(-111.469,-111.469,57.017,57.017) Science of The Total Environment 862 160592 |
institution |
Open Polar |
collection |
Repositório Institucional da Universidade de Aveiro (RIA) |
op_collection_id |
ftria |
language |
English |
topic |
Bitumen elutriate toxicity Natural contamination Weathered bitumen Fluvial erosion |
spellingShingle |
Bitumen elutriate toxicity Natural contamination Weathered bitumen Fluvial erosion Cardoso, Diogo N. Gonçalves, Sandra F. Silva, Ana Rita R. Soares, Amadeu M. V. M. Wrona, Frederick J. Loureiro, Susana Ecotoxicological effects of fluvial eroded bitumen sediments from the Alberta oil sands to model aquatic species |
topic_facet |
Bitumen elutriate toxicity Natural contamination Weathered bitumen Fluvial erosion |
description |
To fully understand the ecological and cumulative effects of mining activities on the surrounding aquatic systems of the Canadian oil sands region, it is essential to understand the consequences of exposure to bitumen-containing soils/sediment from natural geomorphological processes. Both physical and chemical stress on aquatic biota can potentially result from exposure to natural bitumen, resulting from hillslope erosional processes and slumping of bankside soils into the rivers, affecting both riverbed habitat and water quality. The magnitude and duration of bitumen-containing soil's fluvial soils/erosional input into receiving watersheds depends on the interannual variability in the regional hydroclimatology and related seasonal and extreme flow events. The primary objective of this study was to evaluate the potential ecotoxicological effects associated with erosional input of riverbank bitumen soils using controlled exposures. A series of integrated, laboratory-based ecotoxicological bioassays were conducted using organisms with different ecological and functional traits (Daphnia magna (Cladocera), Physa acuta (Gastropoda), and Aliivibrio fischeri (Bacteria)). All model organisms were exposed to elutriates produced from natural bitumen from four different regional rivers: fresh bitumen from shoreline outcrops at the Steepbank River upper and lower reaches (STB-CF and STB-MF, respectively) and the lower-Ells River (EL-MF) and aged, fluvially processed/weathered bitumen from the shoreline of the Athabasca River (ATB-MF). All tested organisms responded negatively to STB-MF and EL-MF elutriates. Low toxicity was also observed in the STB-CF and ATB-MF samples. These results follow the chemical analysis of the parental material and elutriates, where higher levels of metals, polycyclic aromatic compounds and naphthenic acids were detected in the EL-MF sample. In summary, this study shows that eroded and transported bitumen-containing soils and sediments could be a natural source of contaminant exposure to aquatic ... |
format |
Article in Journal/Newspaper |
author |
Cardoso, Diogo N. Gonçalves, Sandra F. Silva, Ana Rita R. Soares, Amadeu M. V. M. Wrona, Frederick J. Loureiro, Susana |
author_facet |
Cardoso, Diogo N. Gonçalves, Sandra F. Silva, Ana Rita R. Soares, Amadeu M. V. M. Wrona, Frederick J. Loureiro, Susana |
author_sort |
Cardoso, Diogo N. |
title |
Ecotoxicological effects of fluvial eroded bitumen sediments from the Alberta oil sands to model aquatic species |
title_short |
Ecotoxicological effects of fluvial eroded bitumen sediments from the Alberta oil sands to model aquatic species |
title_full |
Ecotoxicological effects of fluvial eroded bitumen sediments from the Alberta oil sands to model aquatic species |
title_fullStr |
Ecotoxicological effects of fluvial eroded bitumen sediments from the Alberta oil sands to model aquatic species |
title_full_unstemmed |
Ecotoxicological effects of fluvial eroded bitumen sediments from the Alberta oil sands to model aquatic species |
title_sort |
ecotoxicological effects of fluvial eroded bitumen sediments from the alberta oil sands to model aquatic species |
publisher |
Elsevier |
publishDate |
1482 |
url |
http://hdl.handle.net/10773/37061 https://doi.org/10.1016/j.scitotenv.2022.160592 |
long_lat |
ENVELOPE(-111.669,-111.669,57.300,57.300) ENVELOPE(-111.469,-111.469,57.017,57.017) |
geographic |
Athabasca River Ells River Steepbank River |
geographic_facet |
Athabasca River Ells River Steepbank River |
genre |
Athabasca River |
genre_facet |
Athabasca River |
op_relation |
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50017%2F2020/PT info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50017%2F2020/PT LA/P/0094/2020 info:eu-repo/grantAgreement/FCT/CEEC IND 2018/CEECIND%2F01190%2F2018%2FCP1559%2FCT0006/PT 0048-9697 http://hdl.handle.net/10773/37061 doi:10.1016/j.scitotenv.2022.160592 1879-1026 160592 |
op_rights |
embargoedAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1016/j.scitotenv.2022.160592 |
container_title |
Science of The Total Environment |
container_volume |
862 |
container_start_page |
160592 |
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1768384374454091776 |