The role of dissolved organic matter and groundwater biogeophysical processes in the carbon budget

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dc.contributor.authorOudone, PPen_AU
dc.contributor.authorBaker, AAen_AU
dc.contributor.authorO'Carroll, DMen_AU
dc.contributor.authorAndersen, MMen_AU
dc.contributor.authorRutlidge, Hen_AU
dc.contributor.authorMcDonough, LLen_AU
dc.contributor.authorMarjo, CEen_AU
dc.contributor.authorMeredith, KTen_AU
dc.date.accessioned2022-08-30T21:17:46Zen_AU
dc.date.available2022-08-30T21:17:46Zen_AU
dc.date.issued2017-07-11en_AU
dc.date.statistics2021-11-02en_AU
dc.descriptionIn the online article Denis O'Carroll is listed as DD instead of DM. The citation is as it appears in the article with the author listing as DM O'Carroll. In addition an extra H has been added in the article to Helen H Rutlidge, but there is no indication of Helen having an initial on her profiles. The author listing remains as H. Rutlidge. Chris E. Marjo is listed incorrectly as Christ C Marjo. This has been corrected in the citation,en_AU
dc.description.abstractAtmospheric CO2 concentration is acknowledged to play an important role in climate change. However, quantifying more accurate predictions requires a sound understanding of the cycle and process of carbon especially in the environment. There has been extensive research on terrestrial carbon and the different conditions where it is a source or sink. However, the knowledge on whether groundwater organic matter is a carbon source or sink is limited. This work will explore the dynamic of groundwater organic matter including both its concentration and its rate and extent of biological processing and sorption. The UNSW Wellington Research Station was selected for groundwater sampling as it represents a fractured rock aquifer and alluvial aquifer for groundwater property and interaction investigation. Samples were collected from a transect of boreholes perpendicular from the river. Literature procedures were adopted for determining biological dissolved organic carbon and investigation of organic matter sorption on pure minerals (quartz sand, iron-coated quartz sand and calcium carbonate). For each sample collected total dissolved organic concentration was measured and the organic matter present was characterized by fluorescence spectroscopy and size-exclusion chromatographic technique, LC-OCD. There was greater sorption of organic matter with calcium carbonate, followed by iron-coated sand, while minimum sorption was observed with sand. This research in conjunction with similar studies in different environments will allow conclusions to be drawn groundwater organic matter and whether it is a carbon source or sink and thereby the findings can eventually have some policy application which will enable the management of the groundwater resources as part of the carbon economy.en_AU
dc.identifier.citationOudone, P. P., Baker, A, A., O'Carroll, D. M., Andersen, M. M., Rutlidge, H. H., McDonough, L. L., Marjo, C. E., Meredith, K. (2017). The role of dissolved organic matter and groundwater biogeophysical processes in the carbon budget. Poster presented to the 2017 Biennial Australasian Groundwater Conference, UNSW Sydney, 11 - 13 July 2017. Retrieved from: http://agc-2017.p.agc2017.currinda.com/days/2017-07-11/abstract/310en_AU
dc.identifier.conferenceenddate13 July 2017en_AU
dc.identifier.conferencename2017 Biennial Australasian Groundwater Conferenceen_AU
dc.identifier.conferenceplaceSydney, Australiaen_AU
dc.identifier.conferencestartdate11 July 2017en_AU
dc.identifier.urihttp://agc-2017.p.agc2017.currinda.com/days/2017-07-11/abstract/310en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13681en_AU
dc.language.isoenen_AU
dc.publisherNational Centre for Groundwater Research And Trainingen_AU
dc.subjectOrganic matteren_AU
dc.subjectGround wateren_AU
dc.subjectGeophysical surveysen_AU
dc.subjectCarbon dioxideen_AU
dc.subjectClimatic changeen_AU
dc.subjectSamplingen_AU
dc.subjectAquifersen_AU
dc.subjectRocksen_AU
dc.subjectCarbon sinksen_AU
dc.titleThe role of dissolved organic matter and groundwater biogeophysical processes in the carbon budgeten_AU
dc.typeConference Posteren_AU
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