Effects of suspended sediments on copepods feeding in a glacial influenced sub-Arctic fjord
We investigated the effect of suspended sediments on the vital rates of the copepods Calanus finmarchicus, Pseudocalanus sp. and Metridia longa in a Greenland sub-Arctic fjord. The fjord had a gradient of suspended particulate matter (SPM) with high concentrations (>50 mg L -1 ) in the inner fjor...
Published in: | Journal of Plankton Research |
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2011
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Online Access: | https://pure.au.dk/portal/en/publications/3cda219c-c1a5-4f19-9864-e783fa5c3480 https://doi.org/10.1093/plankt/fbr054 http://www.scopus.com/inward/record.url?scp=80052576437&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/3cda219c-c1a5-4f19-9864-e783fa5c3480 2024-02-11T09:59:35+01:00 Effects of suspended sediments on copepods feeding in a glacial influenced sub-Arctic fjord Arendt, Kristine Engel Dutz, Jörg Jónasdóttir, Sigrún Huld Jung-Madsen, Signe Mortensen, John Møller, Eva Friis Nielsen, Torkel Gissel 2011 https://pure.au.dk/portal/en/publications/3cda219c-c1a5-4f19-9864-e783fa5c3480 https://doi.org/10.1093/plankt/fbr054 http://www.scopus.com/inward/record.url?scp=80052576437&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/en/publications/3cda219c-c1a5-4f19-9864-e783fa5c3480 info:eu-repo/semantics/restrictedAccess Arendt , K E , Dutz , J , Jónasdóttir , S H , Jung-Madsen , S , Mortensen , J , Møller , E F & Nielsen , T G 2011 , ' Effects of suspended sediments on copepods feeding in a glacial influenced sub-Arctic fjord ' , Journal of Plankton Research , vol. 33 , no. 10 , pp. 1526-1537 . https://doi.org/10.1093/plankt/fbr054 copepoda grazing Greenland suspended sediment article 2011 ftuniaarhuspubl https://doi.org/10.1093/plankt/fbr054 2024-01-17T23:59:17Z We investigated the effect of suspended sediments on the vital rates of the copepods Calanus finmarchicus, Pseudocalanus sp. and Metridia longa in a Greenland sub-Arctic fjord. The fjord had a gradient of suspended particulate matter (SPM) with high concentrations (>50 mg L -1 ) in the inner fjord due to glacial melt water runoff. Laboratory experiments showed that when feeding on the diatom Thalassiosira weissflogii specific ingestion rates were low at high concentrations of suspended sediment for C. finmarchicus (>20 mg L -1 ) and Pseudocalanus sp. (>50 mg L -1 ), while no effect was found for M. longa. For C. finmarchicus, a relatively constant fecal pellet production (FPP) and fecal pellet volume suggested ingestion of sediment, which probably led to reduction in egg production rates (EPRs) at high sediment concentrations. For Pseudocalanus sp., FPP decreased with increasing sediment concentrations, while no effect was observed on EPR. No significant difference was observed in FPP for M. longa feeding on the diatom T. weissflogii compared to the ciliate Strombidium sulcatum. The study shows that high sediment concentrations influence the capability of carbon turnover in C. finmarchicus and Pseudocalanus sp., while M. longa appears to be more tolerant to high sediment loads. Therefore, high concentrations of SPM could potentially influence the species composition of glacially influenced fjords. Article in Journal/Newspaper Arctic Arctic Calanus finmarchicus Greenland Copepods Aarhus University: Research Arctic Greenland Journal of Plankton Research 33 10 1526 1537 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
copepoda grazing Greenland suspended sediment |
spellingShingle |
copepoda grazing Greenland suspended sediment Arendt, Kristine Engel Dutz, Jörg Jónasdóttir, Sigrún Huld Jung-Madsen, Signe Mortensen, John Møller, Eva Friis Nielsen, Torkel Gissel Effects of suspended sediments on copepods feeding in a glacial influenced sub-Arctic fjord |
topic_facet |
copepoda grazing Greenland suspended sediment |
description |
We investigated the effect of suspended sediments on the vital rates of the copepods Calanus finmarchicus, Pseudocalanus sp. and Metridia longa in a Greenland sub-Arctic fjord. The fjord had a gradient of suspended particulate matter (SPM) with high concentrations (>50 mg L -1 ) in the inner fjord due to glacial melt water runoff. Laboratory experiments showed that when feeding on the diatom Thalassiosira weissflogii specific ingestion rates were low at high concentrations of suspended sediment for C. finmarchicus (>20 mg L -1 ) and Pseudocalanus sp. (>50 mg L -1 ), while no effect was found for M. longa. For C. finmarchicus, a relatively constant fecal pellet production (FPP) and fecal pellet volume suggested ingestion of sediment, which probably led to reduction in egg production rates (EPRs) at high sediment concentrations. For Pseudocalanus sp., FPP decreased with increasing sediment concentrations, while no effect was observed on EPR. No significant difference was observed in FPP for M. longa feeding on the diatom T. weissflogii compared to the ciliate Strombidium sulcatum. The study shows that high sediment concentrations influence the capability of carbon turnover in C. finmarchicus and Pseudocalanus sp., while M. longa appears to be more tolerant to high sediment loads. Therefore, high concentrations of SPM could potentially influence the species composition of glacially influenced fjords. |
format |
Article in Journal/Newspaper |
author |
Arendt, Kristine Engel Dutz, Jörg Jónasdóttir, Sigrún Huld Jung-Madsen, Signe Mortensen, John Møller, Eva Friis Nielsen, Torkel Gissel |
author_facet |
Arendt, Kristine Engel Dutz, Jörg Jónasdóttir, Sigrún Huld Jung-Madsen, Signe Mortensen, John Møller, Eva Friis Nielsen, Torkel Gissel |
author_sort |
Arendt, Kristine Engel |
title |
Effects of suspended sediments on copepods feeding in a glacial influenced sub-Arctic fjord |
title_short |
Effects of suspended sediments on copepods feeding in a glacial influenced sub-Arctic fjord |
title_full |
Effects of suspended sediments on copepods feeding in a glacial influenced sub-Arctic fjord |
title_fullStr |
Effects of suspended sediments on copepods feeding in a glacial influenced sub-Arctic fjord |
title_full_unstemmed |
Effects of suspended sediments on copepods feeding in a glacial influenced sub-Arctic fjord |
title_sort |
effects of suspended sediments on copepods feeding in a glacial influenced sub-arctic fjord |
publishDate |
2011 |
url |
https://pure.au.dk/portal/en/publications/3cda219c-c1a5-4f19-9864-e783fa5c3480 https://doi.org/10.1093/plankt/fbr054 http://www.scopus.com/inward/record.url?scp=80052576437&partnerID=8YFLogxK |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Calanus finmarchicus Greenland Copepods |
genre_facet |
Arctic Arctic Calanus finmarchicus Greenland Copepods |
op_source |
Arendt , K E , Dutz , J , Jónasdóttir , S H , Jung-Madsen , S , Mortensen , J , Møller , E F & Nielsen , T G 2011 , ' Effects of suspended sediments on copepods feeding in a glacial influenced sub-Arctic fjord ' , Journal of Plankton Research , vol. 33 , no. 10 , pp. 1526-1537 . https://doi.org/10.1093/plankt/fbr054 |
op_relation |
https://pure.au.dk/portal/en/publications/3cda219c-c1a5-4f19-9864-e783fa5c3480 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1093/plankt/fbr054 |
container_title |
Journal of Plankton Research |
container_volume |
33 |
container_issue |
10 |
container_start_page |
1526 |
op_container_end_page |
1537 |
_version_ |
1790595415065755648 |