Results from a stable isotope tracer experiment in Potter Cove, King George Island, Antarctica
Antarctic meiofauna is still strongly understud- ied, and so is its trophic position in the food web. Primary producers, such as phytoplankton, and bacteria may repre- sent important food sources for shallow water metazoans, and the role of meiobenthos in the benthic-pelagic coupling represents an i...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.811380 2023-05-15T13:42:11+02:00 Results from a stable isotope tracer experiment in Potter Cove, King George Island, Antarctica Pasotti, Francesca De Troch, Marleen Raes, Maarten Vanreusel, Ann LATITUDE: -62.223000 * LONGITUDE: -58.644000 * DATE/TIME START: 2007-11-15T00:00:00 * DATE/TIME END: 2007-11-15T00:00:00 2012-05-07 application/zip, 6 datasets https://doi.pangaea.de/10.1594/PANGAEA.811380 https://doi.org/10.1594/PANGAEA.811380 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.811380 https://doi.org/10.1594/PANGAEA.811380 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Pasotti, Francesca; De Troch, Marleen; Raes, Maarten; Vanreusel, Ann (2012): Feeding ecology of shallow water meiofauna: insights from a stable isotope tracer experiment in Potter Cove, King George Island, Antarctica. Polar Biology, 35(11), 1629-1640, https://doi.org/10.1007/s00300-012-1203-6 IMCOAST/IMCONet Impact of climate induced glacier melt on marine coastal systems Antarctica Dataset 2012 ftpangaea https://doi.org/10.1594/PANGAEA.811380 https://doi.org/10.1007/s00300-012-1203-6 2023-01-20T07:32:59Z Antarctic meiofauna is still strongly understud- ied, and so is its trophic position in the food web. Primary producers, such as phytoplankton, and bacteria may repre- sent important food sources for shallow water metazoans, and the role of meiobenthos in the benthic-pelagic coupling represents an important brick for food web understanding. In a laboratory, feeding experiment 13C-labeled freeze- dried diatoms (Thalassiosira weissflogii) and bacteria were added to retrieved cores from Potter Cove (15-m depth, November 2007) in order to investigate the uptake of 3 main meiofauna taxa: nematodes, copepods and cumaceans. In the surface sediment layers, nematodes showed no real difference in uptake of both food sources. This outcome was supported by the natural delta 13C values and the community genus composition. In the first centimeter layer, the dominant genus was Daptonema which is known to be opportunistic, feeding on both bacteria and diatoms. Copepods and cumaceans on the other hand appeared to feed more on diatoms than on bacteria. This may point at a better adaptation to input of primary production from the water column. On the other hand, the overall carbon uptake of the given food sources was quite low for all taxa, indicating that likely other food sources might be of relevance for these meiobenthic organisms. Further studies are needed in order to better quantify the carbon requirements of these organisms. Dataset Antarc* Antarctic Antarctica King George Island Polar Biology Copepods PANGAEA - Data Publisher for Earth & Environmental Science Antarctic King George Island Potter Cove ENVELOPE(-58.644000,-58.644000,-62.223000,-62.223000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
IMCOAST/IMCONet Impact of climate induced glacier melt on marine coastal systems Antarctica |
spellingShingle |
IMCOAST/IMCONet Impact of climate induced glacier melt on marine coastal systems Antarctica Pasotti, Francesca De Troch, Marleen Raes, Maarten Vanreusel, Ann Results from a stable isotope tracer experiment in Potter Cove, King George Island, Antarctica |
topic_facet |
IMCOAST/IMCONet Impact of climate induced glacier melt on marine coastal systems Antarctica |
description |
Antarctic meiofauna is still strongly understud- ied, and so is its trophic position in the food web. Primary producers, such as phytoplankton, and bacteria may repre- sent important food sources for shallow water metazoans, and the role of meiobenthos in the benthic-pelagic coupling represents an important brick for food web understanding. In a laboratory, feeding experiment 13C-labeled freeze- dried diatoms (Thalassiosira weissflogii) and bacteria were added to retrieved cores from Potter Cove (15-m depth, November 2007) in order to investigate the uptake of 3 main meiofauna taxa: nematodes, copepods and cumaceans. In the surface sediment layers, nematodes showed no real difference in uptake of both food sources. This outcome was supported by the natural delta 13C values and the community genus composition. In the first centimeter layer, the dominant genus was Daptonema which is known to be opportunistic, feeding on both bacteria and diatoms. Copepods and cumaceans on the other hand appeared to feed more on diatoms than on bacteria. This may point at a better adaptation to input of primary production from the water column. On the other hand, the overall carbon uptake of the given food sources was quite low for all taxa, indicating that likely other food sources might be of relevance for these meiobenthic organisms. Further studies are needed in order to better quantify the carbon requirements of these organisms. |
format |
Dataset |
author |
Pasotti, Francesca De Troch, Marleen Raes, Maarten Vanreusel, Ann |
author_facet |
Pasotti, Francesca De Troch, Marleen Raes, Maarten Vanreusel, Ann |
author_sort |
Pasotti, Francesca |
title |
Results from a stable isotope tracer experiment in Potter Cove, King George Island, Antarctica |
title_short |
Results from a stable isotope tracer experiment in Potter Cove, King George Island, Antarctica |
title_full |
Results from a stable isotope tracer experiment in Potter Cove, King George Island, Antarctica |
title_fullStr |
Results from a stable isotope tracer experiment in Potter Cove, King George Island, Antarctica |
title_full_unstemmed |
Results from a stable isotope tracer experiment in Potter Cove, King George Island, Antarctica |
title_sort |
results from a stable isotope tracer experiment in potter cove, king george island, antarctica |
publisher |
PANGAEA |
publishDate |
2012 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.811380 https://doi.org/10.1594/PANGAEA.811380 |
op_coverage |
LATITUDE: -62.223000 * LONGITUDE: -58.644000 * DATE/TIME START: 2007-11-15T00:00:00 * DATE/TIME END: 2007-11-15T00:00:00 |
long_lat |
ENVELOPE(-58.644000,-58.644000,-62.223000,-62.223000) |
geographic |
Antarctic King George Island Potter Cove |
geographic_facet |
Antarctic King George Island Potter Cove |
genre |
Antarc* Antarctic Antarctica King George Island Polar Biology Copepods |
genre_facet |
Antarc* Antarctic Antarctica King George Island Polar Biology Copepods |
op_source |
Supplement to: Pasotti, Francesca; De Troch, Marleen; Raes, Maarten; Vanreusel, Ann (2012): Feeding ecology of shallow water meiofauna: insights from a stable isotope tracer experiment in Potter Cove, King George Island, Antarctica. Polar Biology, 35(11), 1629-1640, https://doi.org/10.1007/s00300-012-1203-6 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.811380 https://doi.org/10.1594/PANGAEA.811380 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.811380 https://doi.org/10.1007/s00300-012-1203-6 |
_version_ |
1766164452956176384 |