Partitioning of polychlorinated biphenyls between Arctic seawater and size‐fractionated zooplankton
Abstract Concentrations of hydrophobic organic contaminants in zooplankton have been hypothesized to be governed by either near‐equilibrium partitioning with surrounding water, growth dilution, or biomagnification. Concentrations of 17 polychlorinated biphenyls (PCBs) were measured in size‐fractiona...
Published in: | Environmental Toxicology and Chemistry |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2006
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1897/05-319r1.1 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1897%2F05-319R1.1 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1897/05-319R1.1 |
id |
crwiley:10.1897/05-319r1.1 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1897/05-319r1.1 2024-09-15T17:53:56+00:00 Partitioning of polychlorinated biphenyls between Arctic seawater and size‐fractionated zooplankton Sobek, Anna Reigstad, Marit Gustafsson, Örjan 2006 http://dx.doi.org/10.1897/05-319r1.1 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1897%2F05-319R1.1 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1897/05-319R1.1 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Toxicology and Chemistry volume 25, issue 7, page 1720-1728 ISSN 0730-7268 1552-8618 journal-article 2006 crwiley https://doi.org/10.1897/05-319r1.1 2024-07-30T04:23:50Z Abstract Concentrations of hydrophobic organic contaminants in zooplankton have been hypothesized to be governed by either near‐equilibrium partitioning with surrounding water, growth dilution, or biomagnification. Concentrations of 17 polychlorinated biphenyls (PCBs) were measured in size‐fractionated zooplankton, in phytoplankton (>0.7 μm), and in the dissolved water phase (<0.7 μm) in the surface water of the northern Barents Sea marginal ice zone east and north of Spitsbergen (Norway) and in the central Arctic Ocean at 89°N. The linear partition model was used to indirectly assess if PCBs were equilibrated between water and the extractable organic matter (EOM) of zooplankton. As an independent test, the relation between the EOM‐normalized partition coefficient (log K EOM ) and trophic level (TL) of the zooplankton (based on δ 15 N) was investigated. All log K –log K OW regressions were significant ( n = 18, p < 0.05, r 2 = 0.65–0.95), being consistent with near‐equilibrium partitioning and indirectly suggesting the absence of biomagnification. No correlation was found between log K EOM and TL, further supporting the apparent absence of biomagnification in zooplankton. One implication of these results is a reduced uncertainty in modeling of food web uptake, in which kinetic parameterizations of biodilution or biomagnification in zooplankton may be replaced by a simpler parameterization based on equilibrium partitioning. Article in Journal/Newspaper Arctic Ocean Barents Sea Phytoplankton Zooplankton Spitsbergen Wiley Online Library Environmental Toxicology and Chemistry 25 7 1720 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Concentrations of hydrophobic organic contaminants in zooplankton have been hypothesized to be governed by either near‐equilibrium partitioning with surrounding water, growth dilution, or biomagnification. Concentrations of 17 polychlorinated biphenyls (PCBs) were measured in size‐fractionated zooplankton, in phytoplankton (>0.7 μm), and in the dissolved water phase (<0.7 μm) in the surface water of the northern Barents Sea marginal ice zone east and north of Spitsbergen (Norway) and in the central Arctic Ocean at 89°N. The linear partition model was used to indirectly assess if PCBs were equilibrated between water and the extractable organic matter (EOM) of zooplankton. As an independent test, the relation between the EOM‐normalized partition coefficient (log K EOM ) and trophic level (TL) of the zooplankton (based on δ 15 N) was investigated. All log K –log K OW regressions were significant ( n = 18, p < 0.05, r 2 = 0.65–0.95), being consistent with near‐equilibrium partitioning and indirectly suggesting the absence of biomagnification. No correlation was found between log K EOM and TL, further supporting the apparent absence of biomagnification in zooplankton. One implication of these results is a reduced uncertainty in modeling of food web uptake, in which kinetic parameterizations of biodilution or biomagnification in zooplankton may be replaced by a simpler parameterization based on equilibrium partitioning. |
format |
Article in Journal/Newspaper |
author |
Sobek, Anna Reigstad, Marit Gustafsson, Örjan |
spellingShingle |
Sobek, Anna Reigstad, Marit Gustafsson, Örjan Partitioning of polychlorinated biphenyls between Arctic seawater and size‐fractionated zooplankton |
author_facet |
Sobek, Anna Reigstad, Marit Gustafsson, Örjan |
author_sort |
Sobek, Anna |
title |
Partitioning of polychlorinated biphenyls between Arctic seawater and size‐fractionated zooplankton |
title_short |
Partitioning of polychlorinated biphenyls between Arctic seawater and size‐fractionated zooplankton |
title_full |
Partitioning of polychlorinated biphenyls between Arctic seawater and size‐fractionated zooplankton |
title_fullStr |
Partitioning of polychlorinated biphenyls between Arctic seawater and size‐fractionated zooplankton |
title_full_unstemmed |
Partitioning of polychlorinated biphenyls between Arctic seawater and size‐fractionated zooplankton |
title_sort |
partitioning of polychlorinated biphenyls between arctic seawater and size‐fractionated zooplankton |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1897/05-319r1.1 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1897%2F05-319R1.1 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1897/05-319R1.1 |
genre |
Arctic Ocean Barents Sea Phytoplankton Zooplankton Spitsbergen |
genre_facet |
Arctic Ocean Barents Sea Phytoplankton Zooplankton Spitsbergen |
op_source |
Environmental Toxicology and Chemistry volume 25, issue 7, page 1720-1728 ISSN 0730-7268 1552-8618 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1897/05-319r1.1 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
25 |
container_issue |
7 |
container_start_page |
1720 |
_version_ |
1810430062992818176 |