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dc.contributor.authorLópez-Acosta, Maríaes_ES
dc.contributor.authorLeynaert, Audees_ES
dc.contributor.authorCoquille, Valériees_ES
dc.contributor.authorMaldonado, Manueles_ES
dc.identifier.citationMarine Ecology Progress Series 605 : 111-123 (2018)es_ES
dc.descriptionEste artículo contiene 13 páginas, 6 figuras, 1 tabla.es_ES
dc.description.abstractAwareness that sponges are relevant silicic acid (DSi) users is growing; however, understanding how their DSi consumption kinetics perform is still limited. We investigated the effects that seasonal changes in a temperate ecosystem (Bay of Brest, France) have on the DSi consumption of 2 dominant sponge species: Hymeniacidon perlevis and Tethya citrina. The results indicated that while both species increased their rate of DSi utilization with DSi availability following saturable Michaelis-Menten kinetics, only the kinetics of T. citrina shifted seasonally. This species consumed DSi at a higher rate in autumn than in summer. Surprisingly, the increase in DSi utilization did not involve an increase in net affinity for DSi but rather augmentation of both the half-saturation concentration and the maximum velocity of transport characterizing the kinetics. By quantifying the biomass of the 2 sponge species in the bay and the monthly availability of DSi over an annual cycle, a yearly DSi consumption of 2.50 ± 3.21 × 106 mol Si was calculated for their populations. The oversight of the seasonal kinetic change would introduce inaccuracies of 10% into the global DSi consumption budget of the bay. Because the seasonal kinetic differences increased enormously with increasing DSi availability, the relevance of the kinetic shift into the budgets could increase to >30% for sponge assemblages other than those in the bay whenever they are characterized by higher DSi availability, as is typically occurring at high latitudes and in the deep sea.es_ES
dc.description.sponsorshipThis research was supported by a grant from the Spanish Ministry of Economy and Competitiveness (CTM 2015-67221-R) to M.M. and its associated FPI fellowship to M.L.-A. This study has partially benefited from funds of the European Union’s Horizon 2020 research and innovation program (SponGES project, grant agreement 679849).es_ES
dc.publisherInter Researches_ES
dc.relation.isversionofPublisher's versiones_ES
dc.subjectSiliceous spongeses_ES
dc.subjectSeasonal variabilityes_ES
dc.subjectSilicic acides_ES
dc.subjectSilicon consumption kineticses_ES
dc.titleSilicon utilization by sponges: an assessment of seasonal changeses_ES
dc.description.peerreviewedPeer reviewedes_ES
oprm.item.hasRevisionno ko 0 false*
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