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Conference Paper: Niche structure of marine sponges from temperate hard-bottom habitats within Gray's Reef National Marine Sanctuary

TitleNiche structure of marine sponges from temperate hard-bottom habitats within Gray's Reef National Marine Sanctuary
Authors
KeywordsGray's Reef
isotopic niche space
latitudinal gradient
microbes
microbial abundance
Issue Date2016
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=MBI
Citation
Proceedings of the 9th World Sponge Conference: New Frontiers in Sponge Science, Fremantle, Australia, 4-8 November 2013. In Journal of the Marine Biological Association of the United Kingdom, 2016, v. 96 n. 2, p. 559-565 How to Cite?
AbstractMany species of marine sponges on tropical reefs host abundant and diverse symbiont communities capable of varied metabolic pathways. While such communities may confer a nutritional benefit to some hosts (termed High Microbial Abundance (HMA) sponges), other sympatric species host only sparse symbiont communities (termed Low Microbial Abundance (LMA) sponges) and obtain a majority of their C and N from local sources. Sponge communities are widespread across large latitudinal gradients, however, and recent evidence suggests that these symbioses may also extend beyond the tropics. We investigated the role that symbionts play in the ecology of sponges from the temperate, hard-bottom reefs of Gray's Reef National Marine Sanctuary by calculating the niche size (as standard ellipse area (SEAc)) and assessing the relative placement of five HMA and four LMA sponge species within bivariate (δ13C and δ15N) isotopic space. Although photosymbiont abundance was low across most of these species, sponges were widespread across isotopic niche space, implying that microbial metabolism confers an ecological benefit to temperate sponges by expanding host metabolic capability. To examine how these associations vary across a latitudinal gradient, we also compared the relative placement of temperate and tropical conspecifics within isotopic space. Surprisingly, shifts in sponge δ13C and δ15N values between these regions suggest a reduced reliance on symbiont-derived nutrients in temperate sponges compared with their tropical conspecifics. Despite this, symbiotic sponges in temperate systems likely have a competitive advantage, allowing them to grow and compete for space within these habitats.
DescriptionSpecial issue
Persistent Identifierhttp://hdl.handle.net/10722/215548
ISSN
2023 Impact Factor: 1.1
2023 SCImago Journal Rankings: 0.355
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorFreeman, CJ-
dc.contributor.authorEasson, CG-
dc.contributor.authorBaker, DM-
dc.date.accessioned2015-08-21T13:29:50Z-
dc.date.available2015-08-21T13:29:50Z-
dc.date.issued2016-
dc.identifier.citationProceedings of the 9th World Sponge Conference: New Frontiers in Sponge Science, Fremantle, Australia, 4-8 November 2013. In Journal of the Marine Biological Association of the United Kingdom, 2016, v. 96 n. 2, p. 559-565-
dc.identifier.issn0025-3154-
dc.identifier.urihttp://hdl.handle.net/10722/215548-
dc.descriptionSpecial issue-
dc.description.abstractMany species of marine sponges on tropical reefs host abundant and diverse symbiont communities capable of varied metabolic pathways. While such communities may confer a nutritional benefit to some hosts (termed High Microbial Abundance (HMA) sponges), other sympatric species host only sparse symbiont communities (termed Low Microbial Abundance (LMA) sponges) and obtain a majority of their C and N from local sources. Sponge communities are widespread across large latitudinal gradients, however, and recent evidence suggests that these symbioses may also extend beyond the tropics. We investigated the role that symbionts play in the ecology of sponges from the temperate, hard-bottom reefs of Gray's Reef National Marine Sanctuary by calculating the niche size (as standard ellipse area (SEAc)) and assessing the relative placement of five HMA and four LMA sponge species within bivariate (δ13C and δ15N) isotopic space. Although photosymbiont abundance was low across most of these species, sponges were widespread across isotopic niche space, implying that microbial metabolism confers an ecological benefit to temperate sponges by expanding host metabolic capability. To examine how these associations vary across a latitudinal gradient, we also compared the relative placement of temperate and tropical conspecifics within isotopic space. Surprisingly, shifts in sponge δ13C and δ15N values between these regions suggest a reduced reliance on symbiont-derived nutrients in temperate sponges compared with their tropical conspecifics. Despite this, symbiotic sponges in temperate systems likely have a competitive advantage, allowing them to grow and compete for space within these habitats.-
dc.languageeng-
dc.publisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=MBI-
dc.relation.ispartofJournal of the Marine Biological Association of the United Kingdom-
dc.rightsJournal of the Marine Biological Association of the United Kingdom. Copyright © Cambridge University Press.-
dc.rightsThis article has been published in a revised form in [Journal] [http://doi.org/XXX]. This version is free to view and download for private research and study only. Not for re-distribution, re-sale or use in derivative works. © copyright holder.-
dc.subjectGray's Reef-
dc.subjectisotopic niche space-
dc.subjectlatitudinal gradient-
dc.subjectmicrobes-
dc.subjectmicrobial abundance-
dc.titleNiche structure of marine sponges from temperate hard-bottom habitats within Gray's Reef National Marine Sanctuary-
dc.typeConference_Paper-
dc.identifier.emailBaker, DM: dmbaker@hku.hk-
dc.identifier.authorityBaker, DM=rp01712-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1017/S0025315415000363-
dc.identifier.scopuseid_2-s2.0-84927549097-
dc.identifier.hkuros247555-
dc.identifier.volume96-
dc.identifier.issue2-
dc.identifier.spage559-
dc.identifier.epage565-
dc.identifier.isiWOS:000371163700030-
dc.publisher.placeUnited Kingdom-
dc.customcontrol.immutablecsl 200221-
dc.identifier.issnl0025-3154-

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