Properties of water masses, taxa abundance, and isotopic ratios of samples obtained around Svalbard archipelago, supplement to: Søreide, Janne E; Falk-Petersen, Stig; Hegseth, Else Nøst; Hop, Haakon; Carroll, Michael L; Hobson, Keith A; Blachowiak-Samolyk, Katarzyna (2008): Seasonal feeding strategies of Calanus in the high-Arctic Svalbard region. Deep Sea Research Part II: Topical Studies in Oceanography, 55(20-21), 2225-2244
The feeding strategies of Calanus hyperboreus, C. glacialis, and C. finmarchicus were investigated in the high-Arctic Svalbard region (77-81 °N) in May, August, and December, including seasons with algal blooms, late- to post-bloom situations, and unproductive winter periods. Stable isotope and fatt...
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Format: | Article in Journal/Newspaper |
Language: | English |
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PANGAEA - Data Publisher for Earth & Environmental Science
2008
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Online Access: | https://dx.doi.org/10.1594/pangaea.786713 https://doi.pangaea.de/10.1594/PANGAEA.786713 |
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ftdatacite:10.1594/pangaea.786713 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
ipy International Polar Year 2007-2008 IPY |
spellingShingle |
ipy International Polar Year 2007-2008 IPY Søreide, Janne E Falk-Petersen, Stig Hegseth, Else Nøst Hop, Haakon Carroll, Michael L Hobson, Keith A Blachowiak-Samolyk, Katarzyna Properties of water masses, taxa abundance, and isotopic ratios of samples obtained around Svalbard archipelago, supplement to: Søreide, Janne E; Falk-Petersen, Stig; Hegseth, Else Nøst; Hop, Haakon; Carroll, Michael L; Hobson, Keith A; Blachowiak-Samolyk, Katarzyna (2008): Seasonal feeding strategies of Calanus in the high-Arctic Svalbard region. Deep Sea Research Part II: Topical Studies in Oceanography, 55(20-21), 2225-2244 |
topic_facet |
ipy International Polar Year 2007-2008 IPY |
description |
The feeding strategies of Calanus hyperboreus, C. glacialis, and C. finmarchicus were investigated in the high-Arctic Svalbard region (77-81 °N) in May, August, and December, including seasons with algal blooms, late- to post-bloom situations, and unproductive winter periods. Stable isotope and fatty acid trophic marker (FATM) techniques were employed together to assess trophic level (TL), carbon sources (phytoplankton vs. ice algae), and diet of the three Calanus species. In addition, population development, distribution, and nutritional state (i.e. storage lipids) were examined to estimate their population status at the time of sampling. In May and August, the vertical distribution of the three Calanus species usually coincided with the maximum algal biomass. Their stable isotope and fatty acid (FA) composition indicated that they all were essentially herbivores in May, when the algal biomass was highest. Their FA composition, however, revealed different food preferences. C. hyperboreus had high proportions of 18:4n3, suggesting that it fed mainly on Phaeocystis, whereas C. glacialis and C. finmarchicus had high proportions of 16:4n1, 16:1n7, and 20:5n3, suggesting diatoms as their major food source. Carbon sources (i.e. phytoplankton vs. ice algae) were not possible to determine solely from FATM techniques since ice-diatoms and pelagic-diatoms were characterised by the same FA. However, the enriched d13C values of C. glacialis and C. finmarchicus in May indicated that they fed both on pelagic- and ice-diatoms. Patterns in absolute FA and fatty alcohol composition revealed that diatoms were the most important food for C. hyperboreus and C. glacialis, followed by Phaeocystis, whereas diatoms, Phaeocystis and other small autotrophic flagellates were equally important food for C. finmarchicus. During periods of lower algal biomass, only C. glacialis exhibited evidence of significant dietary switch, with a TL indicative of omnivory (mean TL=2.4). Large spatial variability was observed in population development, distribution, and lipid store sizes in August. At the northernmost station at the southern margin of the Arctic Ocean, the three Calanus species had similarly low lipid stores as they had in May, suggesting that they ascended later in the year. In December, relatively lipid-rich specimens had TL similar to those during the peak productive season (TL~2.0), suggesting that they were hibernating and not feeding on the available refractory material available at that time of the year. In contrast, lipid-poor specimens in December had substantially high TL (TL=2.5), suggesting that they were active and possibly were feeding. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 |
format |
Article in Journal/Newspaper |
author |
Søreide, Janne E Falk-Petersen, Stig Hegseth, Else Nøst Hop, Haakon Carroll, Michael L Hobson, Keith A Blachowiak-Samolyk, Katarzyna |
author_facet |
Søreide, Janne E Falk-Petersen, Stig Hegseth, Else Nøst Hop, Haakon Carroll, Michael L Hobson, Keith A Blachowiak-Samolyk, Katarzyna |
author_sort |
Søreide, Janne E |
title |
Properties of water masses, taxa abundance, and isotopic ratios of samples obtained around Svalbard archipelago, supplement to: Søreide, Janne E; Falk-Petersen, Stig; Hegseth, Else Nøst; Hop, Haakon; Carroll, Michael L; Hobson, Keith A; Blachowiak-Samolyk, Katarzyna (2008): Seasonal feeding strategies of Calanus in the high-Arctic Svalbard region. Deep Sea Research Part II: Topical Studies in Oceanography, 55(20-21), 2225-2244 |
title_short |
Properties of water masses, taxa abundance, and isotopic ratios of samples obtained around Svalbard archipelago, supplement to: Søreide, Janne E; Falk-Petersen, Stig; Hegseth, Else Nøst; Hop, Haakon; Carroll, Michael L; Hobson, Keith A; Blachowiak-Samolyk, Katarzyna (2008): Seasonal feeding strategies of Calanus in the high-Arctic Svalbard region. Deep Sea Research Part II: Topical Studies in Oceanography, 55(20-21), 2225-2244 |
title_full |
Properties of water masses, taxa abundance, and isotopic ratios of samples obtained around Svalbard archipelago, supplement to: Søreide, Janne E; Falk-Petersen, Stig; Hegseth, Else Nøst; Hop, Haakon; Carroll, Michael L; Hobson, Keith A; Blachowiak-Samolyk, Katarzyna (2008): Seasonal feeding strategies of Calanus in the high-Arctic Svalbard region. Deep Sea Research Part II: Topical Studies in Oceanography, 55(20-21), 2225-2244 |
title_fullStr |
Properties of water masses, taxa abundance, and isotopic ratios of samples obtained around Svalbard archipelago, supplement to: Søreide, Janne E; Falk-Petersen, Stig; Hegseth, Else Nøst; Hop, Haakon; Carroll, Michael L; Hobson, Keith A; Blachowiak-Samolyk, Katarzyna (2008): Seasonal feeding strategies of Calanus in the high-Arctic Svalbard region. Deep Sea Research Part II: Topical Studies in Oceanography, 55(20-21), 2225-2244 |
title_full_unstemmed |
Properties of water masses, taxa abundance, and isotopic ratios of samples obtained around Svalbard archipelago, supplement to: Søreide, Janne E; Falk-Petersen, Stig; Hegseth, Else Nøst; Hop, Haakon; Carroll, Michael L; Hobson, Keith A; Blachowiak-Samolyk, Katarzyna (2008): Seasonal feeding strategies of Calanus in the high-Arctic Svalbard region. Deep Sea Research Part II: Topical Studies in Oceanography, 55(20-21), 2225-2244 |
title_sort |
properties of water masses, taxa abundance, and isotopic ratios of samples obtained around svalbard archipelago, supplement to: søreide, janne e; falk-petersen, stig; hegseth, else nøst; hop, haakon; carroll, michael l; hobson, keith a; blachowiak-samolyk, katarzyna (2008): seasonal feeding strategies of calanus in the high-arctic svalbard region. deep sea research part ii: topical studies in oceanography, 55(20-21), 2225-2244 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2008 |
url |
https://dx.doi.org/10.1594/pangaea.786713 https://doi.pangaea.de/10.1594/PANGAEA.786713 |
long_lat |
ENVELOPE(-81.183,-81.183,50.800,50.800) ENVELOPE(-101.250,-101.250,-71.917,-71.917) |
geographic |
Arctic Arctic Ocean Carroll Petersen Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Arctic Ocean Carroll Petersen Svalbard Svalbard Archipelago |
genre |
Arctic Arctic Ocean Calanus hyperboreus ice algae International Polar Year IPY Phytoplankton Svalbard |
genre_facet |
Arctic Arctic Ocean Calanus hyperboreus ice algae International Polar Year IPY Phytoplankton Svalbard |
op_relation |
https://dx.doi.org/10.1016/j.dsr2.2008.05.024 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.786713 https://doi.org/10.1016/j.dsr2.2008.05.024 |
_version_ |
1766333754895237120 |
spelling |
ftdatacite:10.1594/pangaea.786713 2023-05-15T15:01:44+02:00 Properties of water masses, taxa abundance, and isotopic ratios of samples obtained around Svalbard archipelago, supplement to: Søreide, Janne E; Falk-Petersen, Stig; Hegseth, Else Nøst; Hop, Haakon; Carroll, Michael L; Hobson, Keith A; Blachowiak-Samolyk, Katarzyna (2008): Seasonal feeding strategies of Calanus in the high-Arctic Svalbard region. Deep Sea Research Part II: Topical Studies in Oceanography, 55(20-21), 2225-2244 Søreide, Janne E Falk-Petersen, Stig Hegseth, Else Nøst Hop, Haakon Carroll, Michael L Hobson, Keith A Blachowiak-Samolyk, Katarzyna 2008 application/zip https://dx.doi.org/10.1594/pangaea.786713 https://doi.pangaea.de/10.1594/PANGAEA.786713 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.dsr2.2008.05.024 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY ipy International Polar Year 2007-2008 IPY Collection article Supplementary Collection of Datasets 2008 ftdatacite https://doi.org/10.1594/pangaea.786713 https://doi.org/10.1016/j.dsr2.2008.05.024 2021-11-05T12:55:41Z The feeding strategies of Calanus hyperboreus, C. glacialis, and C. finmarchicus were investigated in the high-Arctic Svalbard region (77-81 °N) in May, August, and December, including seasons with algal blooms, late- to post-bloom situations, and unproductive winter periods. Stable isotope and fatty acid trophic marker (FATM) techniques were employed together to assess trophic level (TL), carbon sources (phytoplankton vs. ice algae), and diet of the three Calanus species. In addition, population development, distribution, and nutritional state (i.e. storage lipids) were examined to estimate their population status at the time of sampling. In May and August, the vertical distribution of the three Calanus species usually coincided with the maximum algal biomass. Their stable isotope and fatty acid (FA) composition indicated that they all were essentially herbivores in May, when the algal biomass was highest. Their FA composition, however, revealed different food preferences. C. hyperboreus had high proportions of 18:4n3, suggesting that it fed mainly on Phaeocystis, whereas C. glacialis and C. finmarchicus had high proportions of 16:4n1, 16:1n7, and 20:5n3, suggesting diatoms as their major food source. Carbon sources (i.e. phytoplankton vs. ice algae) were not possible to determine solely from FATM techniques since ice-diatoms and pelagic-diatoms were characterised by the same FA. However, the enriched d13C values of C. glacialis and C. finmarchicus in May indicated that they fed both on pelagic- and ice-diatoms. Patterns in absolute FA and fatty alcohol composition revealed that diatoms were the most important food for C. hyperboreus and C. glacialis, followed by Phaeocystis, whereas diatoms, Phaeocystis and other small autotrophic flagellates were equally important food for C. finmarchicus. During periods of lower algal biomass, only C. glacialis exhibited evidence of significant dietary switch, with a TL indicative of omnivory (mean TL=2.4). Large spatial variability was observed in population development, distribution, and lipid store sizes in August. At the northernmost station at the southern margin of the Arctic Ocean, the three Calanus species had similarly low lipid stores as they had in May, suggesting that they ascended later in the year. In December, relatively lipid-rich specimens had TL similar to those during the peak productive season (TL~2.0), suggesting that they were hibernating and not feeding on the available refractory material available at that time of the year. In contrast, lipid-poor specimens in December had substantially high TL (TL=2.5), suggesting that they were active and possibly were feeding. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 Article in Journal/Newspaper Arctic Arctic Ocean Calanus hyperboreus ice algae International Polar Year IPY Phytoplankton Svalbard DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Carroll ENVELOPE(-81.183,-81.183,50.800,50.800) Petersen ENVELOPE(-101.250,-101.250,-71.917,-71.917) Svalbard Svalbard Archipelago |