dc.creator | Gili, Josep Maria | es |
dc.creator | Rossi, Sergio | es |
dc.creator | Pagès, Francesc | es |
dc.creator | Orejas, Covadonga | es |
dc.creator | Teixidó, Nuria | es |
dc.creator | López González, Pablo José | es |
dc.creator | Arntz, Wolf E. | es |
dc.date.accessioned | 2018-04-03T15:46:32Z | |
dc.date.available | 2018-04-03T15:46:32Z | |
dc.date.issued | 2006 | |
dc.identifier.citation | Gili, J.M., Rossi, S., Pagès, F., Orejas, C., Teixidó, N., López González, P.J. y Arntz, W.E. (2006). A new trophic link between the pelagic and benthic systems on the Antarctic shelf. Marine Ecology Progress Series, 322, 43-49. | |
dc.identifier.issn | 0171-8630 (impreso) | es |
dc.identifier.issn | 1616-1599 (electrónico) | es |
dc.identifier.uri | https://hdl.handle.net/11441/71650 | |
dc.description.abstract | During the expeditions EASIZ II and EASIZ III carried out off the Antarctic Peninsula
with RV ‘Polarstern’, a prey, until now never registered, was observed in the gastrovascular cavities
of octocorallian Anthomastus bathyproctus colonies. A. bathyproctus gastrovascular contents contained
salps of the species Salpa thompsoni in 83 to 88% of the colonies. Salps represented almost
100% of the prey items found in the octocorallian polyps. Salp chains were observed drifting just
above the sediment. These chains undertook vertical migrations down to a depth of 700 m, reaching
the seafloor. The captured salps had stomachs full of microplanktic prey, mainly diatoms and other
phytoplankton cells. Fatty acids, considered to be of diatom origin, were detected in the stomachs of
salps and in their tunica. The presence of such signature lipids was also detected in the octocorallian
coenenchyme, although their concentration was considerably lower. These results suggest that salps
may play an important role as a direct grazer of the phytoplankton produced in the top layers of the
water column which, in turn, would be directly transferred to A. bathyproctus. An important part of
the fresh contents of the salps will be assimilated by the octocorallians. Primary production is captured
by a benthic suspension feeder through the grazer, bypassing the faecal pellet rain. The combined
filtering activity and vertical migration of salps produces an ‘elevator effect’, which reduces the
loss of energy through this short food chain, thus making the exchange between top and bottom
layers more efficient. | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | Inter Research | es |
dc.relation.ispartof | Marine Ecology Progress Series, 322, 43-49. | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Bentho-pelagic coupling | es |
dc.subject | Antarctic | es |
dc.subject | Salps | es |
dc.subject | Octocorals | es |
dc.subject | Benthic suspension feeders | es |
dc.subject | Trophic links | es |
dc.title | A new trophic link between the pelagic and benthic systems on the Antarctic shelf | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Zoología | es |
dc.relation.publisherversion | http://dx.doi.org/10.3354/meps322043 | es |
dc.identifier.doi | 10.3354/meps322043 | es |
idus.format.extent | 7 p. | es |
dc.journaltitle | Marine Ecology Progress Series | es |
dc.publication.volumen | 322 | es |
dc.publication.initialPage | 43 | es |
dc.publication.endPage | 49 | es |