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dc.contributor.authorArístegui, Javier
dc.contributor.authorDuarte Quesada, Carlos Manuel
dc.contributor.authorReche Cañabate, Isabel 
dc.contributor.authorGómez-Pinchetti, Juan L.
dc.date.accessioned2014-03-27T13:51:12Z
dc.date.available2014-03-27T13:51:12Z
dc.date.issued2014
dc.identifier.citationArístegui, J.; Duarte, C.M.; Reche, I.; Gómez-Pinchetti, J.L. Krill Excretion Boosts Microbial Activity in the Southern Ocean. Plos One, 9(2): e89391 (2014). [http://hdl.handle.net/10481/31141]es_ES
dc.identifier.issn1932-6203
dc.identifier.otherdoi: 10.1371/journal.pone.0089391
dc.identifier.urihttp://hdl.handle.net/10481/31141
dc.description.abstractAntarctic krill are known to release large amounts of inorganic and organic nutrients to the water column. Here we test the role of krill excretion of dissolved products in stimulating heterotrophic bacteria on the basis of three experiments where ammonium and organic excretory products released by krill were added to bacterial assemblages, free of grazers. Our results demonstrate that the addition of krill excretion products (but not of ammonium alone), at levels expected in krill swarms, greatly stimulates bacteria resulting in an order-of-magnitude increase in growth and production. Furthermore, they suggest that bacterial growth rate in the Southern Ocean is suppressed well below their potential by resource limitation. Enhanced bacterial activity in the presence of krill, which are major sources of DOC in the Southern Ocean, would further increase recycling processes associated with krill activity, resulting in highly efficient krill-bacterial recycling that should be conducive to stimulating periods of high primary productivity in the Southern Ocean.es_ES
dc.description.sponsorshipThis research is a contribution to projects ICEPOS (REN2002-04165-CO3-O2) and ATOS (POL2006-00550/CTM), funded by the Spanish Ministry of Science and Innovation.es_ES
dc.language.isoenges_ES
dc.publisherPublic Library of Science (PLOS)es_ES
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 3.0 Licensees_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es_ES
dc.subjectAntartic Oceanes_ES
dc.subjectAntarctica es_ES
dc.subjectBacterial growthes_ES
dc.subjectExcretiones_ES
dc.subjectGrazing es_ES
dc.subjectMarine bacteriaes_ES
dc.subjectPhytoplankton es_ES
dc.subjectSea wateres_ES
dc.titleKrill Excretion Boosts Microbial Activity in the Southern Oceanes_ES
dc.typejournal articlees_ES
dc.rights.accessRightsopen accesses_ES


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