Spatial variability of coastal wetland carbon

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dc.contributor.authorOwers, CJen_AU
dc.contributor.authorRogers, Ken_AU
dc.contributor.authorMazumder, Den_AU
dc.contributor.authorWoodroffe, CDen_AU
dc.date.accessioned2021-09-02T00:48:27Zen_AU
dc.date.available2021-09-02T00:48:27Zen_AU
dc.date.issued2017-12-09en_AU
dc.date.statistics2021-08-18en_AU
dc.description.abstractBlue carbon ecosystems, particularly mangrove and saltmarsh, sequester more atmospheric carbon per unit area than any other natural system in the world. Variation in above and below-ground carbon storage, that relate to the expression of environmental processes across wetland landscapes, are yet to be adequately quantified. We proposed that vegetation structure was a significant control on some of the spatial variation in carbon storage, and that this was a function of the dynamic nature of vegetation change at a site. Initially vegetation structural complexity was delineated using innovative remote sensing techniques. Above-ground biomass of mangrove and saltmarsh were quantified by developing region-specific allometric relationships. Cores were extracted from wetlands on the basis of delineated vegetation complexity to characterise the variation in carbon storage within sediments to 2m depth. We found that above-ground biomass varied with vegetation structural complexity, such that tall mangrove contribute more than 65% of above-ground biomass at some sites. The influence of vegetation structure on below-ground carbon storage was only detected to a depth of 50 cm, however >50% of below-ground carbon exists below this depth. Spatial variation in below-ground carbon storage is primarily due to sedimentary factors associated with estuary evolution and geomorphic setting and the influence these factors have on vegetation distribution over the mid-late Holocene. Current approaches to carbon stock assessment, based on extrapolating mean values of carbon storage to national and global scales, oversimplify carbon stock variation and may significantly under or overestimate carbon storage. Systematic approaches to carbon stock assessments characterising carbon storage variation at various scales will provide required confidence necessary for carbon markets.en_AU
dc.identifier.citationOwers, C. J., Rogers, K., Mazumder, D., & Woodroffe, C. D. (2017). Spatial variability of coastal wetland carbon. Paper presented to CERF 2017, "Coastal Science at the Inflection Point: Celebrating Successes & Learning from Challenges", November 5-9, 2017, Rhode Island Convention Center, USA. Retrieved from: https://cerf.confex.com/cerf/2017/meetingapp.cgi/Paper/2639"en_AU
dc.identifier.conferenceenddate9 November 2017en_AU
dc.identifier.conferencenameCERF 2017, 'Coastal Science at the Inflection Point: Celebrating Successes & Learning from Challenges'en_AU
dc.identifier.conferenceplaceRhode Island, USAen_AU
dc.identifier.conferencestartdate5 November 2017en_AU
dc.identifier.urihttps://cerf.confex.com/cerf/2017/meetingapp.cgi/Paper/2639en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11572en_AU
dc.language.isoenen_AU
dc.publisherCoastal & Estuarine Research Federationen_AU
dc.subjectCarbonen_AU
dc.subjectEcosystemsen_AU
dc.subjectMangrovesen_AU
dc.subjectMarshesen_AU
dc.subjectWetlandsen_AU
dc.subjectPlantsen_AU
dc.subjectBiomassen_AU
dc.subjectEnvironmenten_AU
dc.subjectQuaternary perioden_AU
dc.titleSpatial variability of coastal wetland carbonen_AU
dc.typeConference Abstracten_AU
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