Biochemical composition of marine sediment from the eastern Weddell Sea (Antarctica): High nutritive value in a high benthic-biomass environment
13 pages, 3 figures, 3 tables Within the SCAR's international EASIZ programme, as part of the benthic–pelagic coupling experiment, grain size and organic matter contents in marine surface sediment were measured. Samples were taken during the austral autumn of 2000 from 3 regions in the eastern...
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Language: | English |
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Online Access: | http://hdl.handle.net/10261/27464 https://doi.org/10.1016/j.jmarsys.2006.01.006 |
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ftcsic:oai:digital.csic.es:10261/27464 2024-02-11T09:57:01+01:00 Biochemical composition of marine sediment from the eastern Weddell Sea (Antarctica): High nutritive value in a high benthic-biomass environment Isla, Enrique Rossi, Sergio Palanques, Albert Gili, Josep Maria Gerdes, Dieter Arntz, Wolf E. 2006-05 5867 bytes application/pdf http://hdl.handle.net/10261/27464 https://doi.org/10.1016/j.jmarsys.2006.01.006 en eng Elsevier https://doi.org/10.1016/j.jmarsys.2006.01.006 Journal of Marine Systems 60(3-4): 255-267 (2006) 0924-7963 http://hdl.handle.net/10261/27464 doi:10.1016/j.jmarsys.2006.01.006 none Antarctica Weddell Sea Marine sediments Biochemical composition Organic matter Benthic communities Suspension feeders artículo http://purl.org/coar/resource_type/c_6501 2006 ftcsic https://doi.org/10.1016/j.jmarsys.2006.01.006 2024-01-16T09:28:13Z 13 pages, 3 figures, 3 tables Within the SCAR's international EASIZ programme, as part of the benthic–pelagic coupling experiment, grain size and organic matter contents in marine surface sediment were measured. Samples were taken during the austral autumn of 2000 from 3 regions in the eastern Weddell Sea: Kapp Norvegia, Four Seasons Bank, and Austasen. In general, sediments were fine sand with a grain size fraction < 200 μm representing more than 40% of the total weight. The sediments from Four Seasons Bank (64 to 107 m depth) were coarser than those from Austasen and Kapp Norvegia (209 to 480 m depth), presumably due to winnowing of fine sediment at shallow depths. Organic carbon (OC) content ranged from 0.25% to 1.2% and constituted 10% to 97% of the total carbon. The samples from Kapp Norvegia presented the highest OC values. Overall, protein (PRT), lipid (LPD), and carbohydrate (CHO) contents were similar to those in sediment from cold regions (e.g., the North Atlantic and the Ross Sea) but higher than those in sediment from other Antarctic and more septentrional regions (e.g., the Ross Sea and the Mediterranean). The difference within the Antarctic is explained through the local conditions in Terra Nova Bay and Kapp Norvegia. In the Antarctic, PRT and LPD carbon were the main contributors to the biopolymeric carbon (BPC). In the eastern Weddell Sea shelf, the BPC accounted for more than 90% of the OC in most of the samples. More than 82% of the total PRT, LPD, and CHO were present in the fraction < 200 μm. This work remarks the existence of sediments with a high nutritional value persistent several weeks after the spring–summer pulse of fresh organic matter. It is also highlighted the high potential availability of these sediments (due to its grain size) for the benthic communities inhabiting this high-latitude continental shelf This research was co-founded by the Spanish Ministry of Education and Science, ref. ANT99-1608-E Peer reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctica North Atlantic Ross Sea Weddell Sea Digital.CSIC (Spanish National Research Council) Antarctic The Antarctic Weddell Sea Austral Ross Sea Terra Nova Bay Weddell Journal of Marine Systems 60 3-4 255 267 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Antarctica Weddell Sea Marine sediments Biochemical composition Organic matter Benthic communities Suspension feeders |
spellingShingle |
Antarctica Weddell Sea Marine sediments Biochemical composition Organic matter Benthic communities Suspension feeders Isla, Enrique Rossi, Sergio Palanques, Albert Gili, Josep Maria Gerdes, Dieter Arntz, Wolf E. Biochemical composition of marine sediment from the eastern Weddell Sea (Antarctica): High nutritive value in a high benthic-biomass environment |
topic_facet |
Antarctica Weddell Sea Marine sediments Biochemical composition Organic matter Benthic communities Suspension feeders |
description |
13 pages, 3 figures, 3 tables Within the SCAR's international EASIZ programme, as part of the benthic–pelagic coupling experiment, grain size and organic matter contents in marine surface sediment were measured. Samples were taken during the austral autumn of 2000 from 3 regions in the eastern Weddell Sea: Kapp Norvegia, Four Seasons Bank, and Austasen. In general, sediments were fine sand with a grain size fraction < 200 μm representing more than 40% of the total weight. The sediments from Four Seasons Bank (64 to 107 m depth) were coarser than those from Austasen and Kapp Norvegia (209 to 480 m depth), presumably due to winnowing of fine sediment at shallow depths. Organic carbon (OC) content ranged from 0.25% to 1.2% and constituted 10% to 97% of the total carbon. The samples from Kapp Norvegia presented the highest OC values. Overall, protein (PRT), lipid (LPD), and carbohydrate (CHO) contents were similar to those in sediment from cold regions (e.g., the North Atlantic and the Ross Sea) but higher than those in sediment from other Antarctic and more septentrional regions (e.g., the Ross Sea and the Mediterranean). The difference within the Antarctic is explained through the local conditions in Terra Nova Bay and Kapp Norvegia. In the Antarctic, PRT and LPD carbon were the main contributors to the biopolymeric carbon (BPC). In the eastern Weddell Sea shelf, the BPC accounted for more than 90% of the OC in most of the samples. More than 82% of the total PRT, LPD, and CHO were present in the fraction < 200 μm. This work remarks the existence of sediments with a high nutritional value persistent several weeks after the spring–summer pulse of fresh organic matter. It is also highlighted the high potential availability of these sediments (due to its grain size) for the benthic communities inhabiting this high-latitude continental shelf This research was co-founded by the Spanish Ministry of Education and Science, ref. ANT99-1608-E Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Isla, Enrique Rossi, Sergio Palanques, Albert Gili, Josep Maria Gerdes, Dieter Arntz, Wolf E. |
author_facet |
Isla, Enrique Rossi, Sergio Palanques, Albert Gili, Josep Maria Gerdes, Dieter Arntz, Wolf E. |
author_sort |
Isla, Enrique |
title |
Biochemical composition of marine sediment from the eastern Weddell Sea (Antarctica): High nutritive value in a high benthic-biomass environment |
title_short |
Biochemical composition of marine sediment from the eastern Weddell Sea (Antarctica): High nutritive value in a high benthic-biomass environment |
title_full |
Biochemical composition of marine sediment from the eastern Weddell Sea (Antarctica): High nutritive value in a high benthic-biomass environment |
title_fullStr |
Biochemical composition of marine sediment from the eastern Weddell Sea (Antarctica): High nutritive value in a high benthic-biomass environment |
title_full_unstemmed |
Biochemical composition of marine sediment from the eastern Weddell Sea (Antarctica): High nutritive value in a high benthic-biomass environment |
title_sort |
biochemical composition of marine sediment from the eastern weddell sea (antarctica): high nutritive value in a high benthic-biomass environment |
publisher |
Elsevier |
publishDate |
2006 |
url |
http://hdl.handle.net/10261/27464 https://doi.org/10.1016/j.jmarsys.2006.01.006 |
geographic |
Antarctic The Antarctic Weddell Sea Austral Ross Sea Terra Nova Bay Weddell |
geographic_facet |
Antarctic The Antarctic Weddell Sea Austral Ross Sea Terra Nova Bay Weddell |
genre |
Antarc* Antarctic Antarctica North Atlantic Ross Sea Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica North Atlantic Ross Sea Weddell Sea |
op_relation |
https://doi.org/10.1016/j.jmarsys.2006.01.006 Journal of Marine Systems 60(3-4): 255-267 (2006) 0924-7963 http://hdl.handle.net/10261/27464 doi:10.1016/j.jmarsys.2006.01.006 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/j.jmarsys.2006.01.006 |
container_title |
Journal of Marine Systems |
container_volume |
60 |
container_issue |
3-4 |
container_start_page |
255 |
op_container_end_page |
267 |
_version_ |
1790607899295219712 |