Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/98180
Title: | Deep-sea bioluminescence blooms after dense water formation at the ocean surface |
Author: | Tamburini, Christian Canals Artigas, Miquel Durrieu de Madron, Xavier Houpert, Loic Lefèvre, Dominique Martini, Séverine D'Ortenzio, Fabrizio Robert, Anne Testor, Pierre Aguilar, Juan Antonio Al Samarai, Imen Arnaud, Albert André, Michel Anghinolfi, Marco Anton, Gisela Anvar, Shebli Ardid, Miguel Assis Jesus, Ana Carolina Astraadmaja, L.Tri Aubert, Jean-Jacques Baret, Bruny Basa, Stéphane Bertin, Vincent Biagi, Simone Bigi, Armando Bigongiari, Ciro Bogazzi, Claudio Bou-Cabo, Manuel Bouhou, Boutayeb Bouwhuis, Mieke C. Brunner, Jurgen Busto, José Camarena, Francisco Capone, Antonio Carloganu, Christina Carminati, Giada Carr, John Ceccini, Stefano Charif, Ziad |
Keywords: | Salinitat Aigua de mar Mediterrània (Mar) Salinity Seawater Mediterranean Sea |
Issue Date: | 2013 |
Publisher: | Public Library of Science (PLoS) |
Abstract: | The deep ocean is the largest and least known ecosystem on Earth. It hosts numerous pelagic organisms, most of which are able to emit light. Here we present a unique data set consisting of a 2.5-year long record of light emission by deep-sea pelagic organisms, measured from December 2007 to June 2010 at the ANTARES underwater neutrino telescope in the deep NW Mediterranean Sea, jointly with synchronous hydrological records. This is the longest continuous time-series of deep-sea bioluminescence ever recorded. Our record reveals several weeks long, seasonal bioluminescence blooms with light intensity up to two orders of magnitude higher than background values, which correlate to changes in the properties of deep waters. Such changes are triggered by the winter cooling and evaporation experienced by the upper ocean layer in the Gulf of Lion that leads to the formation and subsequent sinking of dense water through a process known as "open-sea convection". It episodically renews the deep water of the study area and conveys fresh organic matter that fuels the deep ecosystems. Luminous bacteria most likely are the main contributors to the observed deep-sea bioluminescence blooms. Our observations demonstrate a consistent and rapid connection between deep open-sea convection and bathypelagic biological activity, as expressed by bioluminescence. In a setting where dense water formation events are likely to decline under global warming scenarios enhancing ocean stratification, in situ observatories become essential as environmental sentinels for the monitoring and understanding of deep-sea ecosystem shifts. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1371/journal.pone.0067523 |
It is part of: | PLoS One, 2013, vol. 8, num. 7, p. e67523 |
URI: | http://hdl.handle.net/2445/98180 |
Related resource: | http://dx.doi.org/10.1371/journal.pone.0067523 |
ISSN: | 1932-6203 |
Appears in Collections: | Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) Publicacions de projectes de recerca finançats per la UE |
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