Abundance, biomass, ingestion rates and daily ratios of Salpa thompsoni individuals sampled during POLARSTERN cruise ANT-XVIII/5b to the Eastern Belingshausen Sea
Distribution, density, and feeding dynamics of the pelagic tunicate Salpa thompsoni have been investigated during the expedition ANTARKTIS XVIII/5b to the Eastern Bellingshausen Sea on board RV Polarstern in April 2001. This expedition was the German contribution to the field campaign of the Souther...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.847636 2024-09-15T17:42:11+00:00 Abundance, biomass, ingestion rates and daily ratios of Salpa thompsoni individuals sampled during POLARSTERN cruise ANT-XVIII/5b to the Eastern Belingshausen Sea Pakhomov, Evgeny A Dubischar, Corinna D Strass, Volker H Brichta, Mauricio Bathmann, Ulrich MEDIAN LATITUDE: -66.883831 * MEDIAN LONGITUDE: -71.759104 * SOUTH-BOUND LATITUDE: -70.700000 * WEST-BOUND LONGITUDE: -86.460000 * NORTH-BOUND LATITUDE: -62.295000 * EAST-BOUND LONGITUDE: -58.740000 * DATE/TIME START: 2001-04-18T00:00:00 * DATE/TIME END: 2001-05-03T13:45:00 2015 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.847636 https://doi.org/10.1594/PANGAEA.847636 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.847636 https://doi.org/10.1594/PANGAEA.847636 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Pakhomov, Evgeny A; Dubischar, Corinna D; Strass, Volker H; Brichta, Mauricio; Bathmann, Ulrich (2006): The tunicate Salpa thompsoni ecology in the Southern Ocean. I. Distribution, biomass, demography and feeding ecophysiology. Marine Biology, 149(3), 609-623, https://doi.org/10.1007/s00227-005-0225-9 AWI Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 dataset publication series 2015 ftpangaea https://doi.org/10.1594/PANGAEA.84763610.1007/s00227-005-0225-9 2024-07-24T02:31:21Z Distribution, density, and feeding dynamics of the pelagic tunicate Salpa thompsoni have been investigated during the expedition ANTARKTIS XVIII/5b to the Eastern Bellingshausen Sea on board RV Polarstern in April 2001. This expedition was the German contribution to the field campaign of the Southern Ocean Global Ocean Ecosystems Dynamics Study (SO-GLOBEC). Salps were found at 31% of all RMT-8 and Bongo stations. Their densities in the RMT-8 samples were low and did not exceed 4.8 ind/m**2 and 7.4 mg C/m**2. However, maximum salp densities sampled with the Bongo net reached 56 ind/m**2 and 341 mg C/m**2. A bimodal salp length frequency distribution was recorded over the shelf, and suggested two recent budding events. This was also confirmed by the developmental stage composition of solitary forms. Ingestion rates of aggregate forms increased from 2.8 to 13.9 µg (pig)/ind/day or from 0.25 to 2.38 mg C/ind/day in salps from 10 to 40 mm oral-atrial length, accounting for 25-75% of body carbon per day. Faecal pellet production rates were on average 0.08 pellet/ind/h with a pronounced diel pattern. Daily individual egestion rates in 13 and 30 mm aggregates ranged from 0.6 to 4.8 µg (pig)/day or from 164 to 239 µg C/day. Assimilation efficiency ranged from 73 to 90% and from 65 to 76% in 13 and 30 mm aggregates, respectively. S. thompsoni exhibited similar ingestion and egestion rates previously estimated for low Antarctic (~50°S) habitats. It has been suggested that the salp population was able to develop in the Eastern Bellingshausen Sea due to an intrusion into the area of the warm Upper Circumpolar Deep Water Other/Unknown Material Antarc* Antarctic Antarktis* Bellingshausen Sea Sea ice Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-86.460000,-58.740000,-62.295000,-70.700000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
spellingShingle |
AWI Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Pakhomov, Evgeny A Dubischar, Corinna D Strass, Volker H Brichta, Mauricio Bathmann, Ulrich Abundance, biomass, ingestion rates and daily ratios of Salpa thompsoni individuals sampled during POLARSTERN cruise ANT-XVIII/5b to the Eastern Belingshausen Sea |
topic_facet |
AWI Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
description |
Distribution, density, and feeding dynamics of the pelagic tunicate Salpa thompsoni have been investigated during the expedition ANTARKTIS XVIII/5b to the Eastern Bellingshausen Sea on board RV Polarstern in April 2001. This expedition was the German contribution to the field campaign of the Southern Ocean Global Ocean Ecosystems Dynamics Study (SO-GLOBEC). Salps were found at 31% of all RMT-8 and Bongo stations. Their densities in the RMT-8 samples were low and did not exceed 4.8 ind/m**2 and 7.4 mg C/m**2. However, maximum salp densities sampled with the Bongo net reached 56 ind/m**2 and 341 mg C/m**2. A bimodal salp length frequency distribution was recorded over the shelf, and suggested two recent budding events. This was also confirmed by the developmental stage composition of solitary forms. Ingestion rates of aggregate forms increased from 2.8 to 13.9 µg (pig)/ind/day or from 0.25 to 2.38 mg C/ind/day in salps from 10 to 40 mm oral-atrial length, accounting for 25-75% of body carbon per day. Faecal pellet production rates were on average 0.08 pellet/ind/h with a pronounced diel pattern. Daily individual egestion rates in 13 and 30 mm aggregates ranged from 0.6 to 4.8 µg (pig)/day or from 164 to 239 µg C/day. Assimilation efficiency ranged from 73 to 90% and from 65 to 76% in 13 and 30 mm aggregates, respectively. S. thompsoni exhibited similar ingestion and egestion rates previously estimated for low Antarctic (~50°S) habitats. It has been suggested that the salp population was able to develop in the Eastern Bellingshausen Sea due to an intrusion into the area of the warm Upper Circumpolar Deep Water |
format |
Other/Unknown Material |
author |
Pakhomov, Evgeny A Dubischar, Corinna D Strass, Volker H Brichta, Mauricio Bathmann, Ulrich |
author_facet |
Pakhomov, Evgeny A Dubischar, Corinna D Strass, Volker H Brichta, Mauricio Bathmann, Ulrich |
author_sort |
Pakhomov, Evgeny A |
title |
Abundance, biomass, ingestion rates and daily ratios of Salpa thompsoni individuals sampled during POLARSTERN cruise ANT-XVIII/5b to the Eastern Belingshausen Sea |
title_short |
Abundance, biomass, ingestion rates and daily ratios of Salpa thompsoni individuals sampled during POLARSTERN cruise ANT-XVIII/5b to the Eastern Belingshausen Sea |
title_full |
Abundance, biomass, ingestion rates and daily ratios of Salpa thompsoni individuals sampled during POLARSTERN cruise ANT-XVIII/5b to the Eastern Belingshausen Sea |
title_fullStr |
Abundance, biomass, ingestion rates and daily ratios of Salpa thompsoni individuals sampled during POLARSTERN cruise ANT-XVIII/5b to the Eastern Belingshausen Sea |
title_full_unstemmed |
Abundance, biomass, ingestion rates and daily ratios of Salpa thompsoni individuals sampled during POLARSTERN cruise ANT-XVIII/5b to the Eastern Belingshausen Sea |
title_sort |
abundance, biomass, ingestion rates and daily ratios of salpa thompsoni individuals sampled during polarstern cruise ant-xviii/5b to the eastern belingshausen sea |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.847636 https://doi.org/10.1594/PANGAEA.847636 |
op_coverage |
MEDIAN LATITUDE: -66.883831 * MEDIAN LONGITUDE: -71.759104 * SOUTH-BOUND LATITUDE: -70.700000 * WEST-BOUND LONGITUDE: -86.460000 * NORTH-BOUND LATITUDE: -62.295000 * EAST-BOUND LONGITUDE: -58.740000 * DATE/TIME START: 2001-04-18T00:00:00 * DATE/TIME END: 2001-05-03T13:45:00 |
long_lat |
ENVELOPE(-86.460000,-58.740000,-62.295000,-70.700000) |
genre |
Antarc* Antarctic Antarktis* Bellingshausen Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarktis* Bellingshausen Sea Sea ice Southern Ocean |
op_source |
Supplement to: Pakhomov, Evgeny A; Dubischar, Corinna D; Strass, Volker H; Brichta, Mauricio; Bathmann, Ulrich (2006): The tunicate Salpa thompsoni ecology in the Southern Ocean. I. Distribution, biomass, demography and feeding ecophysiology. Marine Biology, 149(3), 609-623, https://doi.org/10.1007/s00227-005-0225-9 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.847636 https://doi.org/10.1594/PANGAEA.847636 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.84763610.1007/s00227-005-0225-9 |
_version_ |
1810488651848613888 |