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dc.contributor.authorArthur, Michaelen_US
dc.contributor.authorDunn, Ryanen_US
dc.contributor.authorJordan, Marken_US
dc.contributor.authorLemckert, Charlesen_US
dc.contributor.authorTeasdale, Peteren_US
dc.contributor.authorWelsh, Daviden_US
dc.date.accessioned2017-04-04T14:40:02Z
dc.date.available2017-04-04T14:40:02Z
dc.date.issued2012en_US
dc.date.modified2013-06-04T23:36:37Z
dc.identifier.issn00188158en_US
dc.identifier.doi10.1007/s10750-012-1093-1en_US
dc.identifier.urihttp://hdl.handle.net/10072/47565
dc.description.abstractA previous study has demonstrated that in sandy sediment the marine yabby (Trypaea australiensis) stimulated benthic metabolism, nitrogen regeneration and nitrification, but did not stimulate denitrification, as the intense bioturbation of the yabbies eliminated anoxic microzones amenable to denitrification. It was hypothesised that organic matter additions would alleviate this effect as the buried particles would provide anoxic microniches for denitrifiers. To test this hypothesis a 55-day microcosm (75 cm נ36 cm diameter) experiment, comprising four treatments: sandy sediment (S), sediment + yabbies (S + Y), sediment + A. marina litter (S + OM) and sediment + yabbies + A. marina litter (S + Y + OM), was conducted. Trypaea australiensis significantly stimulated benthic metabolism, nitrogen regeneration, nitrification and nitrate reduction in the presence and the absence of litter additions. In contrast, the effects of litter additions alone were more subtle, developed gradually and were only significant for sediment oxygen demand. However, there was a significant interaction between yabbies and litter with rates of total nitrate reduction and denitrification being significantly greater in the S + Y + OM than all other treatments, presumably due to the decaying buried litter providing anoxic micro-niches suitable to nitrate reduction. In addition, both T. australiensis and litter significantly decreased rates of DNRA and its contribution to nitrate reduction.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.languageEnglishen_US
dc.language.isoen_US
dc.publisherSpringeren_US
dc.publisher.placeNetherlandsen_US
dc.relation.ispartofstudentpublicationYen_US
dc.relation.ispartofpagefrom117en_US
dc.relation.ispartofpageto129en_US
dc.relation.ispartofissue1en_US
dc.relation.ispartofjournalHydrobiologiaen_US
dc.relation.ispartofvolume693en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchEnvironmental Chemistry (incl. Atmospheric Chemistry)en_US
dc.subject.fieldofresearchMarine and Estuarine Ecology (incl. Marine Ichthyology)en_US
dc.subject.fieldofresearchcode039901en_US
dc.subject.fieldofresearchcode060205en_US
dc.titleInteractive influences of the marine yabby (Trypaea australiensis) and mangrove (Avicennia marina) leaf litter on benthic metabolism and nitrogen cycling in sandyestuarine sedimenten_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith School of Environmenten_US
gro.date.issued2012
gro.hasfulltextNo Full Text


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