PCBs and organochlorine pesticides in phytoplankton and Zooplankton in the Indian sector of the Southern Ocean
A bstrac t: 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 tem...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.473.8701 2023-05-15T14:03:01+02:00 PCBs and organochlorine pesticides in phytoplankton and Zooplankton in the Indian sector of the Southern Ocean Claude R. Joiris William Overloop The Pennsylvania State University CiteSeerX Archives 1991 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.473.8701 http://www.vliz.be/imisdocs/publications/6888.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.473.8701 http://www.vliz.be/imisdocs/publications/6888.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.vliz.be/imisdocs/publications/6888.pdf Key w ords Antarctic DDE DDT North Sea PCBs pollutants text 1991 ftciteseerx 2016-01-08T07:27:40Z A bstrac t: 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 fig g '1 dry weight. Contamination levels were more constant expressed per water volume than per dry weight, and seven times lower (1.2 fig m '3) than in northern temperate zones (8.8 fi m '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 fi m '3), lower on a lipid weight basis (5.8 fig g '1 lw for netplankton, 16.3 for particulate matter) and were much higher per seawater volume (27.2 jug n r3 for netplankton, 1.2 for particulate matter). Netplankton contamination is comparable in the Antarctic (0.35 fig g '1 dw) and the North Sea (0.70) since Zooplankton feeding on phytoplankton has similar levels o f 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. Text Antarc* Antarctic Southern Ocean Unknown Antarctic Indian Southern Ocean The Antarctic |
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ftciteseerx |
language |
English |
topic |
Key w ords Antarctic DDE DDT North Sea PCBs pollutants |
spellingShingle |
Key w ords Antarctic DDE DDT North Sea PCBs pollutants Claude R. Joiris William Overloop PCBs and organochlorine pesticides in phytoplankton and Zooplankton in the Indian sector of the Southern Ocean |
topic_facet |
Key w ords Antarctic DDE DDT North Sea PCBs pollutants |
description |
A bstrac t: 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 fig g '1 dry weight. Contamination levels were more constant expressed per water volume than per dry weight, and seven times lower (1.2 fig m '3) than in northern temperate zones (8.8 fi m '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 fi m '3), lower on a lipid weight basis (5.8 fig g '1 lw for netplankton, 16.3 for particulate matter) and were much higher per seawater volume (27.2 jug n r3 for netplankton, 1.2 for particulate matter). Netplankton contamination is comparable in the Antarctic (0.35 fig g '1 dw) and the North Sea (0.70) since Zooplankton feeding on phytoplankton has similar levels o f 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. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Claude R. Joiris William Overloop |
author_facet |
Claude R. Joiris William Overloop |
author_sort |
Claude R. Joiris |
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 |
publishDate |
1991 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.473.8701 http://www.vliz.be/imisdocs/publications/6888.pdf |
geographic |
Antarctic Indian Southern Ocean The Antarctic |
geographic_facet |
Antarctic Indian Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
http://www.vliz.be/imisdocs/publications/6888.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.473.8701 http://www.vliz.be/imisdocs/publications/6888.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766273467923038208 |