Biochemical composition of marine sediment from the eastern Weddell Sea (Antarctica): High nutritive value in a high benthic-biomass environment

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

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Main Authors: Isla, Enrique, Rossi, Sergio, Palanques, Albert, Gili, Josep Maria, Gerdes, Dieter, Arntz, Wolf E.
Format: artículo biblioteca
Language:English
Published: Elsevier 2006-05
Subjects:Antarctica, Weddell Sea, Marine sediments, Biochemical composition, Organic matter, Benthic communities, Suspension feeders,
Online Access:http://hdl.handle.net/10261/27464
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spelling dig-icm-es-10261-274642020-11-12T08:37:37Z 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. Antarctica Weddell Sea Marine sediments Biochemical composition Organic matter Benthic communities Suspension feeders 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 2010-09-07T07:13:08Z 2010-09-07T07:13:08Z 2006-05 artículo http://purl.org/coar/resource_type/c_6501 Journal of Marine Systems 60(3-4): 255-267 (2006) 0924-7963 http://hdl.handle.net/10261/27464 10.1016/j.jmarsys.2006.01.006 en https://doi.org/10.1016/j.jmarsys.2006.01.006 none 5867 bytes application/pdf Elsevier
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
topic Antarctica
Weddell Sea
Marine sediments
Biochemical composition
Organic matter
Benthic communities
Suspension feeders
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
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
description 13 pages, 3 figures, 3 tables
format artículo
topic_facet Antarctica
Weddell Sea
Marine sediments
Biochemical composition
Organic matter
Benthic communities
Suspension feeders
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 2006-05
url http://hdl.handle.net/10261/27464
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