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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...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2015
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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 |
format | Online Article Text |
id | pubmed-4598112 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
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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