PCBs and organochlorine pesticides in phytoplankton and zooplankton in the Indian sector of the Southern Ocean
Samples of phyto- and zooplankton were collected in the Indian sector of the Southern Ocean (38–67°S, 18–84°E) and analysed for organochlorine residues (PCBs and pesticides). The PCB concentration in particulate matter (mainly phytoplankton) appeared to be high and similar to that of temperate zones...
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Cambridge University Press (CUP)
1991
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Online Access: | http://dx.doi.org/10.1017/s0954102091000470 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102091000470 |
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crcambridgeupr:10.1017/s0954102091000470 2024-04-28T07:57:06+00:00 PCBs and organochlorine pesticides in phytoplankton and zooplankton in the Indian sector of the Southern Ocean Joiris, Claude R. Overloop, William 1991 http://dx.doi.org/10.1017/s0954102091000470 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102091000470 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 3, issue 4, page 371-377 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1991 crcambridgeupr https://doi.org/10.1017/s0954102091000470 2024-04-02T06:54:37Z Samples of phyto- and zooplankton were collected in the Indian sector of the Southern Ocean (38–67°S, 18–84°E) and analysed for organochlorine residues (PCBs and pesticides). The PCB concentration in particulate matter (mainly phytoplankton) appeared to be high and similar to that of temperate zones: 0.7 μg g −1 dry weight. Contamination levels were more constant expressed per water volume than per dry weight, and seven times lower (1.2 μg m −3 ) than in northern temperate zones (8.8 μm −3 in the North Sea). The Antarctic ecosystems are thus less contaminated than temperate ones — as expected — but the very low phytoplankton biomass present cause high PCB levels per unit of biomass. These results confirm the necessity of using different systems of units in order to correctly express the contamination levels and to identify the main mechanisms responsible for the accumulation of stable pollutants. PCB levels in netplankton samples (mainly zooplankton) were comparable with phytoplankton on a dry weight basis (0.7 μm −3 ), lower on a lipid weight basis (5.8 μg g −1 lw for netplankton, 16.3 for particulate matter) and were much higher per seawater volume (27.2 μg m −3 for netplankton, 1.2 for particulate matter). Netplankton contamination is comparable in the Antarctic (0.35 μg g −1 dw) and the North Sea (0.70) since zooplankton feeding on phytoplankton has similar levels of contamination in both ecosystems. Lindane, heptachlor epoxide, dieldrin, DDE and DDT were observed in various samples at trace levels. The high DDE/DDT ratio reflects the more recent origin of Antarctic organochlorines. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Southern Ocean Cambridge University Press Antarctic Science 3 4 371 377 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Joiris, Claude R. Overloop, William PCBs and organochlorine pesticides in phytoplankton and zooplankton in the Indian sector of the Southern Ocean |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Samples of phyto- and zooplankton were collected in the Indian sector of the Southern Ocean (38–67°S, 18–84°E) and analysed for organochlorine residues (PCBs and pesticides). The PCB concentration in particulate matter (mainly phytoplankton) appeared to be high and similar to that of temperate zones: 0.7 μg g −1 dry weight. Contamination levels were more constant expressed per water volume than per dry weight, and seven times lower (1.2 μg m −3 ) than in northern temperate zones (8.8 μm −3 in the North Sea). The Antarctic ecosystems are thus less contaminated than temperate ones — as expected — but the very low phytoplankton biomass present cause high PCB levels per unit of biomass. These results confirm the necessity of using different systems of units in order to correctly express the contamination levels and to identify the main mechanisms responsible for the accumulation of stable pollutants. PCB levels in netplankton samples (mainly zooplankton) were comparable with phytoplankton on a dry weight basis (0.7 μm −3 ), lower on a lipid weight basis (5.8 μg g −1 lw for netplankton, 16.3 for particulate matter) and were much higher per seawater volume (27.2 μg m −3 for netplankton, 1.2 for particulate matter). Netplankton contamination is comparable in the Antarctic (0.35 μg g −1 dw) and the North Sea (0.70) since zooplankton feeding on phytoplankton has similar levels of contamination in both ecosystems. Lindane, heptachlor epoxide, dieldrin, DDE and DDT were observed in various samples at trace levels. The high DDE/DDT ratio reflects the more recent origin of Antarctic organochlorines. |
format |
Article in Journal/Newspaper |
author |
Joiris, Claude R. Overloop, William |
author_facet |
Joiris, Claude R. Overloop, William |
author_sort |
Joiris, Claude R. |
title |
PCBs and organochlorine pesticides in phytoplankton and zooplankton in the Indian sector of the Southern Ocean |
title_short |
PCBs and organochlorine pesticides in phytoplankton and zooplankton in the Indian sector of the Southern Ocean |
title_full |
PCBs and organochlorine pesticides in phytoplankton and zooplankton in the Indian sector of the Southern Ocean |
title_fullStr |
PCBs and organochlorine pesticides in phytoplankton and zooplankton in the Indian sector of the Southern Ocean |
title_full_unstemmed |
PCBs and organochlorine pesticides in phytoplankton and zooplankton in the Indian sector of the Southern Ocean |
title_sort |
pcbs and organochlorine pesticides in phytoplankton and zooplankton in the indian sector of the southern ocean |
publisher |
Cambridge University Press (CUP) |
publishDate |
1991 |
url |
http://dx.doi.org/10.1017/s0954102091000470 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102091000470 |
genre |
Antarc* Antarctic Antarctic Science Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Science Southern Ocean |
op_source |
Antarctic Science volume 3, issue 4, page 371-377 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102091000470 |
container_title |
Antarctic Science |
container_volume |
3 |
container_issue |
4 |
container_start_page |
371 |
op_container_end_page |
377 |
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1797586755924262912 |