Characterization and Interpolation of Sediment PCBs and PBDEs in Resident Killer Whale Habitat along the Coast of British Columbia, Canada
Characterization and Interpolation of Sediment PCBs and PBDEs in Resident Killer Whale Habitat along the Coast of The northeastern Pacific Northern and Southern Resident Killer Whale (NRKW and SRKW) (Orcinus orca) populations are listed as threatened and endangered in Canada, respectively, with pers...
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ftwestwashington:oai:cedar.wwu.edu:ssec-3183 2023-08-20T04:07:45+02:00 Characterization and Interpolation of Sediment PCBs and PBDEs in Resident Killer Whale Habitat along the Coast of British Columbia, Canada Kim, Dr. Joseph 2022-04-27T23:30:00Z application/pdf https://cedar.wwu.edu/ssec/2022ssec/allsessions/21 https://cedar.wwu.edu/context/ssec/article/3183/viewcontent/22_f66a7162ff614c86856045fc77bbfc1a.pdf English eng Western CEDAR https://cedar.wwu.edu/ssec/2022ssec/allsessions/21 https://cedar.wwu.edu/context/ssec/article/3183/viewcontent/22_f66a7162ff614c86856045fc77bbfc1a.pdf Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author's written permission. Salish Sea Ecosystem Conference text 2022 ftwestwashington 2023-07-30T16:43:03Z Characterization and Interpolation of Sediment PCBs and PBDEs in Resident Killer Whale Habitat along the Coast of The northeastern Pacific Northern and Southern Resident Killer Whale (NRKW and SRKW) (Orcinus orca) populations are listed as threatened and endangered in Canada, respectively, with persistent, bioaccumulative contaminants, such as polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) posing threats to their recovery. Concentrations of PCBs and PBDEs in subtidal surface sediments collected from 97 sites along the British Columbia (BC) coast were used to identify their distribution and profiles, and to assess killer whale habitat quality. Victoria Harbour (VH3(site ID: 1)) sediments exhibited the highest PCB and PBDE concentrations. For PCBs, PCB-138, was found at the highest concentration, followed by PCB-153, PCB-110, PCB-149, PCB-101, and PCB-118. For PBDEs, individual congeners were ranked as follows: BDE-209 > BDE-207 > BDE-206 > BDE-208 > BDE-47 > BDE-99. Principal component analyses (PCA) illustrated the variations in contaminant profiles, with PC1 for PCBs and PBDEs correlated with the octanol-water partition coefficient (LogKow; p < 0.003). Sediment particle size (SPS), total organic carbon (TOC), and water depth at collection were other factors associated with the distribution of PBDEs, while PCB profiles were associated with TOC. Total PCB and PBDE concentrations at 100% and 34% of the sites, respectively, exceeded the recently adopted British Columbia’s Ministry of Environment and Climate Change Strategy (BCMoE) Working Sediment Quality Guidelines (WSQGs) (PCBs: 3.7 pg/g dw and PBDEs: 1,000 pg/g dw), considered protective of killer whales. Our findings suggest that the legacy of banned PCBs and PBDEs is likely to constrain the recovery of killer whales as a result of their mobilization from sediments and consequent uptake by marine food webs. Text Killer Whale Orca Orcinus orca Killer whale Western Washington University: CEDAR (Contributing to Education through Digital Access to Research) British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Pacific Victoria Harbour ENVELOPE(-91.583,-91.583,70.151,70.151) |
institution |
Open Polar |
collection |
Western Washington University: CEDAR (Contributing to Education through Digital Access to Research) |
op_collection_id |
ftwestwashington |
language |
English |
description |
Characterization and Interpolation of Sediment PCBs and PBDEs in Resident Killer Whale Habitat along the Coast of The northeastern Pacific Northern and Southern Resident Killer Whale (NRKW and SRKW) (Orcinus orca) populations are listed as threatened and endangered in Canada, respectively, with persistent, bioaccumulative contaminants, such as polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) posing threats to their recovery. Concentrations of PCBs and PBDEs in subtidal surface sediments collected from 97 sites along the British Columbia (BC) coast were used to identify their distribution and profiles, and to assess killer whale habitat quality. Victoria Harbour (VH3(site ID: 1)) sediments exhibited the highest PCB and PBDE concentrations. For PCBs, PCB-138, was found at the highest concentration, followed by PCB-153, PCB-110, PCB-149, PCB-101, and PCB-118. For PBDEs, individual congeners were ranked as follows: BDE-209 > BDE-207 > BDE-206 > BDE-208 > BDE-47 > BDE-99. Principal component analyses (PCA) illustrated the variations in contaminant profiles, with PC1 for PCBs and PBDEs correlated with the octanol-water partition coefficient (LogKow; p < 0.003). Sediment particle size (SPS), total organic carbon (TOC), and water depth at collection were other factors associated with the distribution of PBDEs, while PCB profiles were associated with TOC. Total PCB and PBDE concentrations at 100% and 34% of the sites, respectively, exceeded the recently adopted British Columbia’s Ministry of Environment and Climate Change Strategy (BCMoE) Working Sediment Quality Guidelines (WSQGs) (PCBs: 3.7 pg/g dw and PBDEs: 1,000 pg/g dw), considered protective of killer whales. Our findings suggest that the legacy of banned PCBs and PBDEs is likely to constrain the recovery of killer whales as a result of their mobilization from sediments and consequent uptake by marine food webs. |
format |
Text |
author |
Kim, Dr. Joseph |
spellingShingle |
Kim, Dr. Joseph Characterization and Interpolation of Sediment PCBs and PBDEs in Resident Killer Whale Habitat along the Coast of British Columbia, Canada |
author_facet |
Kim, Dr. Joseph |
author_sort |
Kim, Dr. Joseph |
title |
Characterization and Interpolation of Sediment PCBs and PBDEs in Resident Killer Whale Habitat along the Coast of British Columbia, Canada |
title_short |
Characterization and Interpolation of Sediment PCBs and PBDEs in Resident Killer Whale Habitat along the Coast of British Columbia, Canada |
title_full |
Characterization and Interpolation of Sediment PCBs and PBDEs in Resident Killer Whale Habitat along the Coast of British Columbia, Canada |
title_fullStr |
Characterization and Interpolation of Sediment PCBs and PBDEs in Resident Killer Whale Habitat along the Coast of British Columbia, Canada |
title_full_unstemmed |
Characterization and Interpolation of Sediment PCBs and PBDEs in Resident Killer Whale Habitat along the Coast of British Columbia, Canada |
title_sort |
characterization and interpolation of sediment pcbs and pbdes in resident killer whale habitat along the coast of british columbia, canada |
publisher |
Western CEDAR |
publishDate |
2022 |
url |
https://cedar.wwu.edu/ssec/2022ssec/allsessions/21 https://cedar.wwu.edu/context/ssec/article/3183/viewcontent/22_f66a7162ff614c86856045fc77bbfc1a.pdf |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) ENVELOPE(-91.583,-91.583,70.151,70.151) |
geographic |
British Columbia Canada Pacific Victoria Harbour |
geographic_facet |
British Columbia Canada Pacific Victoria Harbour |
genre |
Killer Whale Orca Orcinus orca Killer whale |
genre_facet |
Killer Whale Orca Orcinus orca Killer whale |
op_source |
Salish Sea Ecosystem Conference |
op_relation |
https://cedar.wwu.edu/ssec/2022ssec/allsessions/21 https://cedar.wwu.edu/context/ssec/article/3183/viewcontent/22_f66a7162ff614c86856045fc77bbfc1a.pdf |
op_rights |
Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author's written permission. |
_version_ |
1774719615553765376 |