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Ecosystem type drives tea litter decomposition and associated prokaryotic microbiome communities in freshwater and coastal wetlands at a continental scale

2021Journal article Restricted access
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dc.contributor.authorTrevathan-Tackett, Stacey M.
dc.contributor.authorKepfer-Rojas, Sebastian
dc.contributor.authorEngelen, Aschwin
dc.contributor.authorYork, Paul H.
dc.contributor.authorOla, Anne
dc.contributor.authorLi, Jinquan
dc.contributor.authorKelleway, Jeffrey J.
dc.contributor.authorJinks, Kristin I.
dc.contributor.authorJackson, Emma L.
dc.contributor.authorAdame, Maria Fernanda
dc.contributor.authorPendall, Elise
dc.contributor.authorLovelock, Catherine E.
dc.contributor.authorConnolly, Rod M.
dc.contributor.authorWatson, Anne
dc.contributor.authorVisby, Inger
dc.contributor.authorTrethowan, Allison
dc.contributor.authorTaylor, Ben
dc.contributor.authorRoberts, Tessa N.B.
dc.contributor.authorPetch, Jane
dc.contributor.authorFarrington, Lachlan
dc.contributor.authorDjukic, Ika
dc.contributor.authorMacreadie, Peter I.
dc.date.accessioned2021-06-28T08:30:08Z
dc.date.available2021-06-28T08:30:08Z
dc.date.issued2021
dc.description.abstractWetland ecosystems are critical to the regulation of the global carbon cycle, and there is a high demand for data to improve carbon sequestration and emission models and predictions. Decomposition of plant litter is an important component of ecosystem carbon cycling, yet a lack of knowledge on decay rates in wetlands is an impediment to predicting carbon preservation. Here, we aim to fill this knowledge gap by quantifying the decomposition of standardised green and rooibos tea litter over one year within freshwater and coastal wetland soils across four climates in Australia. We also captured changes in the prokaryotic members of the tea-associated microbiome during this process. Ecosystem type drove differences in tea decay rates and prokaryotic microbiome community composition. Decomposition rates were up to 2-fold higher in mangrove and seagrass soils compared to freshwater wetlands and tidal marshes, in part due to greater leaching-related mass loss. For tidal marshes and freshwater wetlands, the warmer climates had 7-16% less mass remaining compared to temperate climates after a year of decomposition. The prokaryotic microbiome community composition was significantly different between substrate types and sampling times within and across ecosystem types. Microbial indicator analyses suggested putative metabolic pathways common across ecosystems were used to breakdown the tea litter, including increased presence of putative methylotrophs and sulphur oxidisers linked to the introduction of oxygen by root in-growth over the incubation period. Structural equation modelling analyses further highlighted the importance of incubation time on tea decomposition and prokaryotic microbiome community succession, particularly for rooibos tea that experienced a greater proportion of mass loss between three and twelve months compared to green tea. These results provide insights into ecosystem-level attributes that affect both the abiotic and biotic controls of belowground wetland carbon turnover at a continental scale, while also highlighting new decay dynamics for tea litter decomposing under longer incubations.pt_PT
dc.description.sponsorshipUIDB/04326/2020/ CEECINST/00114/2018pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.scitotenv.2021.146819pt_PT
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/10400.1/16666
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectAustraliapt_PT
dc.subjectCarbonpt_PT
dc.subjectEcosystempt_PT
dc.subjectFresh waterpt_PT
dc.subjectSoilpt_PT
dc.subjectTeapt_PT
dc.subjectMicrobiotapt_PT
dc.subjectWetlandspt_PT
dc.titleEcosystem type drives tea litter decomposition and associated prokaryotic microbiome communities in freshwater and coastal wetlands at a continental scalept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage146819pt_PT
oaire.citation.titleScience of The Total Environmentpt_PT
oaire.citation.volume782pt_PT
person.familyNameEngelen
person.givenNameAschwin
person.identifier.ciencia-id911A-9A0C-744D
person.identifier.orcid0000-0002-9579-9606
person.identifier.ridM-3432-2013
person.identifier.scopus-author-id6701622770
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication33d5a223-f2c9-4c68-984f-9213f15a05b0
relation.isAuthorOfPublication.latestForDiscovery33d5a223-f2c9-4c68-984f-9213f15a05b0

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