Stable Isotope composition of particulate organic matter and fauna in a deep Mediterranean cold-water coral bank
Cold-water corals (CWC) are frequently reported from deep sites with locally accelerated currents that enhance seabed food particle supply. Moreover, zooplankton likely account for ecologically important prey items, but their contribution to CWC diet remains unquantified. We investigated the benthic...
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ftdatacite:10.1594/pangaea.771095 2023-05-15T17:08:50+02:00 Stable Isotope composition of particulate organic matter and fauna in a deep Mediterranean cold-water coral bank Carlier, Antoine Le Guilloux, E Olu, Karine Sarrazin, Jozée Mastrototaro, F Taviani, Marco Clavier, Jacques 2011 application/zip https://dx.doi.org/10.1594/pangaea.771095 https://doi.pangaea.de/10.1594/PANGAEA.771095 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.3354/meps08361 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Longline deployment Trawl net Biological sample Passelaigue net Carbonate Blade core Large collection box ROV drawer Small collection box PEP bottle APLABES GAVIS M70/1 MEDECO1 Universitatis Meteor 1986 Pourquoi Pas ? 2005 Hotspot Ecosystem Research and Mans Impact On European Seas HERMIONE Hotspot Ecosystem Research on the Margins of European Seas HERMES Collection of Datasets article Collection 2011 ftdatacite https://doi.org/10.1594/pangaea.771095 https://doi.org/10.3354/meps08361 2022-02-09T12:06:21Z Cold-water corals (CWC) are frequently reported from deep sites with locally accelerated currents that enhance seabed food particle supply. Moreover, zooplankton likely account for ecologically important prey items, but their contribution to CWC diet remains unquantified. We investigated the benthic food web structure of the recently discovered Santa Maria di Leuca (SML) CWC province (300 to 1100 m depth) located in the oligotrophic northern Ionian Sea. We analyzed stable isotopes (delta13C and delta15N) of the main consumers (including ubiquitous CWC species) exhibiting different feeding strategies, zooplankton, suspended particulate organic matter (POM) and sedimented organic matter (SOM). Zooplankton and POM were collected 3 m above the coral colonies in order to assess their relative contributions to CWC diet. The delta15N of the scleractinians Desmophyllum dianthus, Madrepora oculata and Lophelia pertusa and the gorgonian Paramuricea cf. macrospinawere consistent with a diet mainly composed of zooplankton. The antipatharian Leiopathes glaberrima was more 15N- depletedthan other cnidarians, suggesting a lower contribution of zooplankton to its diet. Our delta13C data clearly indicate that the benthic food web of SML is exclusively fuelled by carbon of phytoplanktonic origin. Nevertheless, consumers feeding at the water sediment interface were more 13C-enriched than consumers feeding above the bottom (i.e. living corals and their epifauna). This pattern suggests that carbon is assimilated via 2 trophic pathways: relatively fresh phytoplanktonic production for 13C-depleted consumers and more decayed organic matter for 13C-enriched consumers. When the delta13C values of consumers were corrected for the influence of lipids (which are significantly 13C-depleted relative to other tissue components), our conclusions remained unchanged, except in the case of L. glaberrima which could assimilate a mixture of zooplankton and resuspended decayed organic matter. Article in Journal/Newspaper Lophelia pertusa DataCite Metadata Store (German National Library of Science and Technology) Pourquoi Pas ENVELOPE(135.783,135.783,-66.083,-66.083) Pourquoi-Pas ENVELOPE(-67.450,-67.450,-67.700,-67.700) Pourquoi-Pas? ENVELOPE(135.750,135.750,-66.200,-66.200) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Longline deployment Trawl net Biological sample Passelaigue net Carbonate Blade core Large collection box ROV drawer Small collection box PEP bottle APLABES GAVIS M70/1 MEDECO1 Universitatis Meteor 1986 Pourquoi Pas ? 2005 Hotspot Ecosystem Research and Mans Impact On European Seas HERMIONE Hotspot Ecosystem Research on the Margins of European Seas HERMES |
spellingShingle |
Longline deployment Trawl net Biological sample Passelaigue net Carbonate Blade core Large collection box ROV drawer Small collection box PEP bottle APLABES GAVIS M70/1 MEDECO1 Universitatis Meteor 1986 Pourquoi Pas ? 2005 Hotspot Ecosystem Research and Mans Impact On European Seas HERMIONE Hotspot Ecosystem Research on the Margins of European Seas HERMES Carlier, Antoine Le Guilloux, E Olu, Karine Sarrazin, Jozée Mastrototaro, F Taviani, Marco Clavier, Jacques Stable Isotope composition of particulate organic matter and fauna in a deep Mediterranean cold-water coral bank |
topic_facet |
Longline deployment Trawl net Biological sample Passelaigue net Carbonate Blade core Large collection box ROV drawer Small collection box PEP bottle APLABES GAVIS M70/1 MEDECO1 Universitatis Meteor 1986 Pourquoi Pas ? 2005 Hotspot Ecosystem Research and Mans Impact On European Seas HERMIONE Hotspot Ecosystem Research on the Margins of European Seas HERMES |
description |
Cold-water corals (CWC) are frequently reported from deep sites with locally accelerated currents that enhance seabed food particle supply. Moreover, zooplankton likely account for ecologically important prey items, but their contribution to CWC diet remains unquantified. We investigated the benthic food web structure of the recently discovered Santa Maria di Leuca (SML) CWC province (300 to 1100 m depth) located in the oligotrophic northern Ionian Sea. We analyzed stable isotopes (delta13C and delta15N) of the main consumers (including ubiquitous CWC species) exhibiting different feeding strategies, zooplankton, suspended particulate organic matter (POM) and sedimented organic matter (SOM). Zooplankton and POM were collected 3 m above the coral colonies in order to assess their relative contributions to CWC diet. The delta15N of the scleractinians Desmophyllum dianthus, Madrepora oculata and Lophelia pertusa and the gorgonian Paramuricea cf. macrospinawere consistent with a diet mainly composed of zooplankton. The antipatharian Leiopathes glaberrima was more 15N- depletedthan other cnidarians, suggesting a lower contribution of zooplankton to its diet. Our delta13C data clearly indicate that the benthic food web of SML is exclusively fuelled by carbon of phytoplanktonic origin. Nevertheless, consumers feeding at the water sediment interface were more 13C-enriched than consumers feeding above the bottom (i.e. living corals and their epifauna). This pattern suggests that carbon is assimilated via 2 trophic pathways: relatively fresh phytoplanktonic production for 13C-depleted consumers and more decayed organic matter for 13C-enriched consumers. When the delta13C values of consumers were corrected for the influence of lipids (which are significantly 13C-depleted relative to other tissue components), our conclusions remained unchanged, except in the case of L. glaberrima which could assimilate a mixture of zooplankton and resuspended decayed organic matter. |
format |
Article in Journal/Newspaper |
author |
Carlier, Antoine Le Guilloux, E Olu, Karine Sarrazin, Jozée Mastrototaro, F Taviani, Marco Clavier, Jacques |
author_facet |
Carlier, Antoine Le Guilloux, E Olu, Karine Sarrazin, Jozée Mastrototaro, F Taviani, Marco Clavier, Jacques |
author_sort |
Carlier, Antoine |
title |
Stable Isotope composition of particulate organic matter and fauna in a deep Mediterranean cold-water coral bank |
title_short |
Stable Isotope composition of particulate organic matter and fauna in a deep Mediterranean cold-water coral bank |
title_full |
Stable Isotope composition of particulate organic matter and fauna in a deep Mediterranean cold-water coral bank |
title_fullStr |
Stable Isotope composition of particulate organic matter and fauna in a deep Mediterranean cold-water coral bank |
title_full_unstemmed |
Stable Isotope composition of particulate organic matter and fauna in a deep Mediterranean cold-water coral bank |
title_sort |
stable isotope composition of particulate organic matter and fauna in a deep mediterranean cold-water coral bank |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2011 |
url |
https://dx.doi.org/10.1594/pangaea.771095 https://doi.pangaea.de/10.1594/PANGAEA.771095 |
long_lat |
ENVELOPE(135.783,135.783,-66.083,-66.083) ENVELOPE(-67.450,-67.450,-67.700,-67.700) ENVELOPE(135.750,135.750,-66.200,-66.200) |
geographic |
Pourquoi Pas Pourquoi-Pas Pourquoi-Pas? |
geographic_facet |
Pourquoi Pas Pourquoi-Pas Pourquoi-Pas? |
genre |
Lophelia pertusa |
genre_facet |
Lophelia pertusa |
op_relation |
https://dx.doi.org/10.3354/meps08361 |
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.771095 https://doi.org/10.3354/meps08361 |
_version_ |
1766064702416224256 |