Effects‐based marine ecological risk assessment at a polychlorinated biphenyl‐contaminated site in Saglek, Labrador, Canada
Abstract Although the presence and distribution of polychlorinated biphenyls (PCBs) in Arctic marine environments has been well documented, the implications for the health of biota are poorly understood. In the present study, multiple lines of evidence, including site‐specific effects data, were use...
Published in: | Environmental Toxicology and Chemistry |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2012
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/etc.2070 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.2070 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.2070 |
id |
crwiley:10.1002/etc.2070 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/etc.2070 2024-09-15T17:59:59+00:00 Effects‐based marine ecological risk assessment at a polychlorinated biphenyl‐contaminated site in Saglek, Labrador, Canada Brown, Tanya M. Kuzyk, Zou Zou A. Stow, Jason P. Burgess, Neil M. Solomon, Steve M. Sheldon, Tom A. Reimer, Ken J. 2012 http://dx.doi.org/10.1002/etc.2070 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.2070 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.2070 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Toxicology and Chemistry volume 32, issue 2, page 453-467 ISSN 0730-7268 1552-8618 journal-article 2012 crwiley https://doi.org/10.1002/etc.2070 2024-08-15T04:21:20Z Abstract Although the presence and distribution of polychlorinated biphenyls (PCBs) in Arctic marine environments has been well documented, the implications for the health of biota are poorly understood. In the present study, multiple lines of evidence, including site‐specific effects data, were used to assess PCB‐related risks to marine biota at a contaminated military site in Saglek Bay, Labrador, Canada, from 1997 to 1999. Risks were evaluated for three components of the ecosystem: benthic invertebrates, a bottom‐feeding fish (shorthorn sculpin, Myoxocephalus scorpius), and a diving seabird (black guillemot, Cepphus grylle ). Average sediment PCB concentrations exceeded the Canadian interim sediment quality guideline level by 41‐fold. However, sediment toxicity testing and a benthic community survey showed no evidence of adverse effects. In contrast, shorthorn sculpin and black guillemot PCB exposures (measured as sum of 55 congeners) were elevated enough to pose risks to survival or reproduction. Based on the collective evidence, the authors estimated that risks were posed by sediment PCB concentrations greater than 77 ng/g dry weight for black guillemots and 750 ng/g dry weight for shorthorn sculpins. The present study, along with two parallel studies, provided information to support the management decisions concerning potential remedial action on the contaminated sediments. This ecological risk assessment describes the steps and rationale taken to evaluate the risk posed by an area of PCB‐contaminated marine sediments in an otherwise relatively pristine northern coastal environment. Environ. Toxicol. Chem. 2013;32:453–467. © 2012 SETAC Article in Journal/Newspaper Black guillemot Cepphus grylle Wiley Online Library Environmental Toxicology and Chemistry 32 2 453 467 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Although the presence and distribution of polychlorinated biphenyls (PCBs) in Arctic marine environments has been well documented, the implications for the health of biota are poorly understood. In the present study, multiple lines of evidence, including site‐specific effects data, were used to assess PCB‐related risks to marine biota at a contaminated military site in Saglek Bay, Labrador, Canada, from 1997 to 1999. Risks were evaluated for three components of the ecosystem: benthic invertebrates, a bottom‐feeding fish (shorthorn sculpin, Myoxocephalus scorpius), and a diving seabird (black guillemot, Cepphus grylle ). Average sediment PCB concentrations exceeded the Canadian interim sediment quality guideline level by 41‐fold. However, sediment toxicity testing and a benthic community survey showed no evidence of adverse effects. In contrast, shorthorn sculpin and black guillemot PCB exposures (measured as sum of 55 congeners) were elevated enough to pose risks to survival or reproduction. Based on the collective evidence, the authors estimated that risks were posed by sediment PCB concentrations greater than 77 ng/g dry weight for black guillemots and 750 ng/g dry weight for shorthorn sculpins. The present study, along with two parallel studies, provided information to support the management decisions concerning potential remedial action on the contaminated sediments. This ecological risk assessment describes the steps and rationale taken to evaluate the risk posed by an area of PCB‐contaminated marine sediments in an otherwise relatively pristine northern coastal environment. Environ. Toxicol. Chem. 2013;32:453–467. © 2012 SETAC |
format |
Article in Journal/Newspaper |
author |
Brown, Tanya M. Kuzyk, Zou Zou A. Stow, Jason P. Burgess, Neil M. Solomon, Steve M. Sheldon, Tom A. Reimer, Ken J. |
spellingShingle |
Brown, Tanya M. Kuzyk, Zou Zou A. Stow, Jason P. Burgess, Neil M. Solomon, Steve M. Sheldon, Tom A. Reimer, Ken J. Effects‐based marine ecological risk assessment at a polychlorinated biphenyl‐contaminated site in Saglek, Labrador, Canada |
author_facet |
Brown, Tanya M. Kuzyk, Zou Zou A. Stow, Jason P. Burgess, Neil M. Solomon, Steve M. Sheldon, Tom A. Reimer, Ken J. |
author_sort |
Brown, Tanya M. |
title |
Effects‐based marine ecological risk assessment at a polychlorinated biphenyl‐contaminated site in Saglek, Labrador, Canada |
title_short |
Effects‐based marine ecological risk assessment at a polychlorinated biphenyl‐contaminated site in Saglek, Labrador, Canada |
title_full |
Effects‐based marine ecological risk assessment at a polychlorinated biphenyl‐contaminated site in Saglek, Labrador, Canada |
title_fullStr |
Effects‐based marine ecological risk assessment at a polychlorinated biphenyl‐contaminated site in Saglek, Labrador, Canada |
title_full_unstemmed |
Effects‐based marine ecological risk assessment at a polychlorinated biphenyl‐contaminated site in Saglek, Labrador, Canada |
title_sort |
effects‐based marine ecological risk assessment at a polychlorinated biphenyl‐contaminated site in saglek, labrador, canada |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1002/etc.2070 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.2070 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.2070 |
genre |
Black guillemot Cepphus grylle |
genre_facet |
Black guillemot Cepphus grylle |
op_source |
Environmental Toxicology and Chemistry volume 32, issue 2, page 453-467 ISSN 0730-7268 1552-8618 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/etc.2070 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
32 |
container_issue |
2 |
container_start_page |
453 |
op_container_end_page |
467 |
_version_ |
1810437097445654528 |