Effects of Oil and Chemically Treated Oil on Nearshore Under-Ice Meiofauna Studied in Situ
Meiofauna collected during May 1982 in the soft bottom layer of nearshore landfast ice at Cape Hatt, northern Baffin Island, were dominated by cyclopoid copepods, harpacticoid copepods, nematodes and polychaete larvae (73.5, 15.4, 6.3 and 3.5% of total numbers respectively). Also included were rotif...
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The Arctic Institute of North America
1987
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ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/64873 2023-05-15T14:19:14+02:00 Effects of Oil and Chemically Treated Oil on Nearshore Under-Ice Meiofauna Studied in Situ Cross, William E. Martin, Carole M. 1987-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64873 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64873/48787 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64873 ARCTIC; Vol. 40 No. 5 (1987): Supplement: 1–279; 258-265 1923-1245 0004-0843 Algae Animal distribution Animal population Canada. Baffin Island Oil Spill Project Copepoda Environmental impacts Marine oil spills Microbial ecology Nematoda Polychaeta Sea ice ecology Byron Bay Labrador Hatt Cape waters Nunavut Ragged Channel info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1987 ftunivcalgaryojs 2022-03-22T21:22:03Z Meiofauna collected during May 1982 in the soft bottom layer of nearshore landfast ice at Cape Hatt, northern Baffin Island, were dominated by cyclopoid copepods, harpacticoid copepods, nematodes and polychaete larvae (73.5, 15.4, 6.3 and 3.5% of total numbers respectively). Also included were rotifers, gastropod veligers and calanoid copepod nauplii; calanoid nauplii were probably present in the near-ice water and not on or in the ice. Average abundance of all ice meiofauna was 54,000 individuals/sq m. Densities of all meiofauna groups were spatially variable, but only nematodes and cyclopoid copepods showed evidence of progressive temporal change between 18 May and 2 June. Undisturbed, enclosed areas of the under-ice surface were treated with oil on 23-24 May. Dispersed oil (Venezuela Lagomedio + Corexit 9527, BP CTD or BP 1100 WD) was in contact with the ice for 5 hours, whereas untreated oil and solidified oil (BP treatment) remained in the enclosures for the duration of the study (12 days post-treatment). Sampling was carried out in areas where oil contacted the ice and moved away or in areas near oil that remained in contact with the under-ice surface. Five hours after treatment, oil concentrations in the water within the enclosures were similar (0.15-0.28 ppm) in untreated oil, solidified oil and control enclosures. In contrast, dispersed oil oil concentrations were 5.8-36.5 ppm. Densities of all copepods and polychaetes decreased dramatically in each dispersed oil enclosure by the second post-spill day, and slight density increases were evident by the tenth post-spill day. Harpacticoid copepods apparently were more sensitive to dispersed oil than were cyclopoid copepods. Densities of nematodes and cyclopoid copepod nauplii were not affected by dispersed oil. Densities of nematodes, polychaetes and all copepods were not affected by untreated or solidified oil, but there was some evidence of a stimulatory effect of those treatments on some copepod groups and life stages.Key words: Arctic, ice meiofauna, ice copepods, ice polychaetes, ice nematodes, oil effects, dispersed oil effects, solidified oil effects, Baffin Island Mots clés: arctique, méiofaune glaciaire, copépodes glaciaires, polychètes glaciaires, nématodes glaciaires, effets dus au pétrole, effets dus au pétrole dispersé, effets dus au pétrole solidifié, île Baffin Article in Journal/Newspaper Arctic Arctic Arctique* Baffin Island Baffin Nunavut Sea ice Copepods University of Calgary Journal Hosting Arctic Baffin Island Byron Bay ENVELOPE(-108.475,-108.475,68.932,68.932) Canada Cape Hatt ENVELOPE(-79.832,-79.832,72.501,72.501) Nunavut ARCTIC 40 5 |
institution |
Open Polar |
collection |
University of Calgary Journal Hosting |
op_collection_id |
ftunivcalgaryojs |
language |
English |
topic |
Algae Animal distribution Animal population Canada. Baffin Island Oil Spill Project Copepoda Environmental impacts Marine oil spills Microbial ecology Nematoda Polychaeta Sea ice ecology Byron Bay Labrador Hatt Cape waters Nunavut Ragged Channel |
spellingShingle |
Algae Animal distribution Animal population Canada. Baffin Island Oil Spill Project Copepoda Environmental impacts Marine oil spills Microbial ecology Nematoda Polychaeta Sea ice ecology Byron Bay Labrador Hatt Cape waters Nunavut Ragged Channel Cross, William E. Martin, Carole M. Effects of Oil and Chemically Treated Oil on Nearshore Under-Ice Meiofauna Studied in Situ |
topic_facet |
Algae Animal distribution Animal population Canada. Baffin Island Oil Spill Project Copepoda Environmental impacts Marine oil spills Microbial ecology Nematoda Polychaeta Sea ice ecology Byron Bay Labrador Hatt Cape waters Nunavut Ragged Channel |
description |
Meiofauna collected during May 1982 in the soft bottom layer of nearshore landfast ice at Cape Hatt, northern Baffin Island, were dominated by cyclopoid copepods, harpacticoid copepods, nematodes and polychaete larvae (73.5, 15.4, 6.3 and 3.5% of total numbers respectively). Also included were rotifers, gastropod veligers and calanoid copepod nauplii; calanoid nauplii were probably present in the near-ice water and not on or in the ice. Average abundance of all ice meiofauna was 54,000 individuals/sq m. Densities of all meiofauna groups were spatially variable, but only nematodes and cyclopoid copepods showed evidence of progressive temporal change between 18 May and 2 June. Undisturbed, enclosed areas of the under-ice surface were treated with oil on 23-24 May. Dispersed oil (Venezuela Lagomedio + Corexit 9527, BP CTD or BP 1100 WD) was in contact with the ice for 5 hours, whereas untreated oil and solidified oil (BP treatment) remained in the enclosures for the duration of the study (12 days post-treatment). Sampling was carried out in areas where oil contacted the ice and moved away or in areas near oil that remained in contact with the under-ice surface. Five hours after treatment, oil concentrations in the water within the enclosures were similar (0.15-0.28 ppm) in untreated oil, solidified oil and control enclosures. In contrast, dispersed oil oil concentrations were 5.8-36.5 ppm. Densities of all copepods and polychaetes decreased dramatically in each dispersed oil enclosure by the second post-spill day, and slight density increases were evident by the tenth post-spill day. Harpacticoid copepods apparently were more sensitive to dispersed oil than were cyclopoid copepods. Densities of nematodes and cyclopoid copepod nauplii were not affected by dispersed oil. Densities of nematodes, polychaetes and all copepods were not affected by untreated or solidified oil, but there was some evidence of a stimulatory effect of those treatments on some copepod groups and life stages.Key words: Arctic, ice meiofauna, ice copepods, ice polychaetes, ice nematodes, oil effects, dispersed oil effects, solidified oil effects, Baffin Island Mots clés: arctique, méiofaune glaciaire, copépodes glaciaires, polychètes glaciaires, nématodes glaciaires, effets dus au pétrole, effets dus au pétrole dispersé, effets dus au pétrole solidifié, île Baffin |
format |
Article in Journal/Newspaper |
author |
Cross, William E. Martin, Carole M. |
author_facet |
Cross, William E. Martin, Carole M. |
author_sort |
Cross, William E. |
title |
Effects of Oil and Chemically Treated Oil on Nearshore Under-Ice Meiofauna Studied in Situ |
title_short |
Effects of Oil and Chemically Treated Oil on Nearshore Under-Ice Meiofauna Studied in Situ |
title_full |
Effects of Oil and Chemically Treated Oil on Nearshore Under-Ice Meiofauna Studied in Situ |
title_fullStr |
Effects of Oil and Chemically Treated Oil on Nearshore Under-Ice Meiofauna Studied in Situ |
title_full_unstemmed |
Effects of Oil and Chemically Treated Oil on Nearshore Under-Ice Meiofauna Studied in Situ |
title_sort |
effects of oil and chemically treated oil on nearshore under-ice meiofauna studied in situ |
publisher |
The Arctic Institute of North America |
publishDate |
1987 |
url |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64873 |
long_lat |
ENVELOPE(-108.475,-108.475,68.932,68.932) ENVELOPE(-79.832,-79.832,72.501,72.501) |
geographic |
Arctic Baffin Island Byron Bay Canada Cape Hatt Nunavut |
geographic_facet |
Arctic Baffin Island Byron Bay Canada Cape Hatt Nunavut |
genre |
Arctic Arctic Arctique* Baffin Island Baffin Nunavut Sea ice Copepods |
genre_facet |
Arctic Arctic Arctique* Baffin Island Baffin Nunavut Sea ice Copepods |
op_source |
ARCTIC; Vol. 40 No. 5 (1987): Supplement: 1–279; 258-265 1923-1245 0004-0843 |
op_relation |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64873/48787 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64873 |
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ARCTIC |
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40 |
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