Water chemistry, and isotopic ratios and fatty acids and alcohols in Calanus finmarchicus CV, norther Mid-Atlantic Ridge
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| Main Authors: | , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2010
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| _version_ | 1867172223076270080 |
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| author | Petursdottir, Hildur Falk-Petersen, Stig Hop, Haakon Gislason, Astthor |
| author_facet | Petursdottir, Hildur Falk-Petersen, Stig Hop, Haakon Gislason, Astthor |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Fatty acid and alcohol profiles and stable nitrogen and carbon isotope values, d15N and d13C, of Calanus finmarchicus CV were studied in June 2004 to estimate their trophic status along the northern Mid-Atlantic Ridge i.e. the Reykjanes Ridge (RR), extending from Iceland in the north to the productive region of the Sub-Polar Front (SPF) in the south. Two main groups of stations were defined in the study area based on fatty acid (FA) and fatty alcohol compositions, the stations in the RR area constituted one group and the stations in the frontal area constituted another. The sum of relative amounts of the dietary FAs was significantly higher in the RR area than in the frontal area. Conversely, the long-chained FAs, 20:1 and 22:1, were found in significantly lower relative amounts in the RR area than in the frontal area, thus indicating later ascent of the animals in the frontal area. Further support of this is provided by the fatty alcohols ratio 20:1/22:1 which differed significantly between the two areas. The d15N values were significantly higher in the frontal area compared to the RR area indicating higher trophic position and/or different pelagic-POM baseline in these areas. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_818238 |
| institution | PANGAEA |
| language | en |
| publishDate | 2010 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Water chemistry, and isotopic ratios and fatty acids and alcohols in Calanus finmarchicus CV, norther Mid-Atlantic Ridge Petursdottir, Hildur Falk-Petersen, Stig Hop, Haakon Gislason, Astthor International Polar Year (2007-2008); IPY Fatty acid and alcohol profiles and stable nitrogen and carbon isotope values, d15N and d13C, of Calanus finmarchicus CV were studied in June 2004 to estimate their trophic status along the northern Mid-Atlantic Ridge i.e. the Reykjanes Ridge (RR), extending from Iceland in the north to the productive region of the Sub-Polar Front (SPF) in the south. Two main groups of stations were defined in the study area based on fatty acid (FA) and fatty alcohol compositions, the stations in the RR area constituted one group and the stations in the frontal area constituted another. The sum of relative amounts of the dietary FAs was significantly higher in the RR area than in the frontal area. Conversely, the long-chained FAs, 20:1 and 22:1, were found in significantly lower relative amounts in the RR area than in the frontal area, thus indicating later ascent of the animals in the frontal area. Further support of this is provided by the fatty alcohols ratio 20:1/22:1 which differed significantly between the two areas. The d15N values were significantly higher in the frontal area compared to the RR area indicating higher trophic position and/or different pelagic-POM baseline in these areas. |
| title | Water chemistry, and isotopic ratios and fatty acids and alcohols in Calanus finmarchicus CV, norther Mid-Atlantic Ridge |
| topic | International Polar Year (2007-2008); IPY |
| url | https://doi.org/10.1594/PANGAEA.818238 |