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Microfossils, a Key to Unravel Cold-Water Carbonate Mound Evolution through Time: Evidence from the Eastern Alboran Sea

Cold-water coral (CWC) ecosystems occur worldwide and play a major role in the ocean's carbonate budget and atmospheric CO(2) balance since the Danian (~65 m.y. ago). However their temporal and spatial evolution against climatic and oceanographic variability is still unclear. For the first time...

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Autores principales: Stalder, Claudio, Vertino, Agostina, Rosso, Antonietta, Rüggeberg, Andres, Pirkenseer, Claudius, Spangenberg, Jorge E., Spezzaferri, Silvia, Camozzi, Osvaldo, Rappo, Sacha, Hajdas, Irka
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4598112/
https://www.ncbi.nlm.nih.gov/pubmed/26447699
http://dx.doi.org/10.1371/journal.pone.0140223
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author Stalder, Claudio
Vertino, Agostina
Rosso, Antonietta
Rüggeberg, Andres
Pirkenseer, Claudius
Spangenberg, Jorge E.
Spezzaferri, Silvia
Camozzi, Osvaldo
Rappo, Sacha
Hajdas, Irka
author_facet Stalder, Claudio
Vertino, Agostina
Rosso, Antonietta
Rüggeberg, Andres
Pirkenseer, Claudius
Spangenberg, Jorge E.
Spezzaferri, Silvia
Camozzi, Osvaldo
Rappo, Sacha
Hajdas, Irka
author_sort Stalder, Claudio
collection PubMed
description Cold-water coral (CWC) ecosystems occur worldwide and play a major role in the ocean's carbonate budget and atmospheric CO(2) balance since the Danian (~65 m.y. ago). However their temporal and spatial evolution against climatic and oceanographic variability is still unclear. For the first time, we combine the main macrofaunal components of a sediment core from a CWC mound of the Melilla Mounds Field in the Eastern Alboran Sea with the associated microfauna and we highlight the importance of foraminifera and ostracods as indicators of CWC mound evolution in the paleorecord. Abundances of macrofauna along the core reveal alternating periods dominated by distinct CWC taxa (mostly Lophelia pertusa, Madrepora oculata) that correspond to major shifts in foraminiferal and ostracod assemblages. The period dominated by M. oculata coincides with a period characterized by increased export of refractory organic matter to the seafloor and rather unstable oceanographic conditions at the benthic boundary layer with periodically decreased water energy and oxygenation, variable bottom water temperature/density and increased sediment flow. The microfaunal and geochemical data strongly suggest that M. oculata and in particular Dendrophylliidae show a higher tolerance to environmental changes than L. pertusa. Finally, we show evidence for sustained CWC growth during the Alleröd-Younger-Dryas in the Eastern Alboran Sea and that this period corresponds to stable benthic conditions with cold/dense and well oxygenated bottom waters, high fluxes of labile organic matter and relatively strong bottom currents
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spelling pubmed-45981122015-10-20 Microfossils, a Key to Unravel Cold-Water Carbonate Mound Evolution through Time: Evidence from the Eastern Alboran Sea Stalder, Claudio Vertino, Agostina Rosso, Antonietta Rüggeberg, Andres Pirkenseer, Claudius Spangenberg, Jorge E. Spezzaferri, Silvia Camozzi, Osvaldo Rappo, Sacha Hajdas, Irka PLoS One Research Article Cold-water coral (CWC) ecosystems occur worldwide and play a major role in the ocean's carbonate budget and atmospheric CO(2) balance since the Danian (~65 m.y. ago). However their temporal and spatial evolution against climatic and oceanographic variability is still unclear. For the first time, we combine the main macrofaunal components of a sediment core from a CWC mound of the Melilla Mounds Field in the Eastern Alboran Sea with the associated microfauna and we highlight the importance of foraminifera and ostracods as indicators of CWC mound evolution in the paleorecord. Abundances of macrofauna along the core reveal alternating periods dominated by distinct CWC taxa (mostly Lophelia pertusa, Madrepora oculata) that correspond to major shifts in foraminiferal and ostracod assemblages. The period dominated by M. oculata coincides with a period characterized by increased export of refractory organic matter to the seafloor and rather unstable oceanographic conditions at the benthic boundary layer with periodically decreased water energy and oxygenation, variable bottom water temperature/density and increased sediment flow. The microfaunal and geochemical data strongly suggest that M. oculata and in particular Dendrophylliidae show a higher tolerance to environmental changes than L. pertusa. Finally, we show evidence for sustained CWC growth during the Alleröd-Younger-Dryas in the Eastern Alboran Sea and that this period corresponds to stable benthic conditions with cold/dense and well oxygenated bottom waters, high fluxes of labile organic matter and relatively strong bottom currents Public Library of Science 2015-10-08 /pmc/articles/PMC4598112/ /pubmed/26447699 http://dx.doi.org/10.1371/journal.pone.0140223 Text en © 2015 Stalder et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Stalder, Claudio
Vertino, Agostina
Rosso, Antonietta
Rüggeberg, Andres
Pirkenseer, Claudius
Spangenberg, Jorge E.
Spezzaferri, Silvia
Camozzi, Osvaldo
Rappo, Sacha
Hajdas, Irka
Microfossils, a Key to Unravel Cold-Water Carbonate Mound Evolution through Time: Evidence from the Eastern Alboran Sea
title Microfossils, a Key to Unravel Cold-Water Carbonate Mound Evolution through Time: Evidence from the Eastern Alboran Sea
title_full Microfossils, a Key to Unravel Cold-Water Carbonate Mound Evolution through Time: Evidence from the Eastern Alboran Sea
title_fullStr Microfossils, a Key to Unravel Cold-Water Carbonate Mound Evolution through Time: Evidence from the Eastern Alboran Sea
title_full_unstemmed Microfossils, a Key to Unravel Cold-Water Carbonate Mound Evolution through Time: Evidence from the Eastern Alboran Sea
title_short Microfossils, a Key to Unravel Cold-Water Carbonate Mound Evolution through Time: Evidence from the Eastern Alboran Sea
title_sort microfossils, a key to unravel cold-water carbonate mound evolution through time: evidence from the eastern alboran sea
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4598112/
https://www.ncbi.nlm.nih.gov/pubmed/26447699
http://dx.doi.org/10.1371/journal.pone.0140223
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