Factors affecting dissolved organic carbon in coastal groundwater systems

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dc.contributor.authorMcDonough, LKen_AU
dc.contributor.authorO'Carroll, DMen_AU
dc.contributor.authorAndersen, MSen_AU
dc.contributor.authorMeredith, KTen_AU
dc.contributor.authorRutlidge, Hen_AU
dc.contributor.authorOudone, PPen_AU
dc.contributor.authorMarjo, CEen_AU
dc.contributor.authorBaker, AAen_AU
dc.date.accessioned2022-08-30T20:58:09Zen_AU
dc.date.available2022-08-30T20:58:09Zen_AU
dc.date.issued2017-07-11en_AU
dc.date.statistics2021-11-02en_AU
dc.description.abstractBalancing the terrestrial global carbon budget has proven to be a significant challenge. Whilst the movement of carbon in the atmosphere and riverine waters has been extensively studied, the potential for organic carbon to desorb/adsorb from mineral surfaces and act as a groundwater organic carbon source/sink, is poorly understood. To investigate the biodegradable component of groundwater dissolved organic carbon (DOC), groundwater samples were collected from six wells located on Rottnest Island, WA. Wells were selected to cover a range of DOC ages and concentrations in a carbonate aquifer. Water quality parameters such as pH, electrical conductivity, temperature, dissolved oxygen were measured in the field. Samples were analysed for their biodegradable DOC content using spectrofluorometric techniques at set intervals within a 28 day period. Further to this, we examined the conditions and processes affecting DOC at a coastal wetland in Anna Bay, NSW. Four multilevel samplers (MLS’s) were installed in a transect with 1m spacing, with a distance of up to 3 m from the wetland edge. Two samples were taken from each MLS and analysed for DOC, dissolved inorganic carbon (DIC), anions and cations using LC-OCD, spectrofluorometry, UV-Vis and FIA techniques. This research forms part of an ongoing project which will assist in identifying the factors affecting the mobilisation, transport and removal of DOC in uncontaminated groundwater. By quantifying the processes, we can then determine whether the groundwater is a carbon source or sink. Importantly, this information will help guide policy and identify the need to include groundwater resources as part of the carbon economy.en_AU
dc.identifier.citationMcDonough, L., O'Carroll, D., Andresen, M., Meredith, K., Rutlidge, H., Oudone, P., Marjo, C., & Baker, A. (2017). Factors affecting dissolved organic carbon in coastal groundwater systems. 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/285en_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/285en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13680en_AU
dc.language.isoenen_AU
dc.publisherNational Centre for Groundwater Research And Trainingen_AU
dc.subjectCarbonen_AU
dc.subjectCoastal regionsen_AU
dc.subjectGround wateren_AU
dc.subjectCarbon sinksen_AU
dc.subjectWestern Australiaen_AU
dc.subjectIslandsen_AU
dc.subjectNew South Walesen_AU
dc.subjectBaysen_AU
dc.subjectAustraliaen_AU
dc.titleFactors affecting dissolved organic carbon in coastal groundwater systemsen_AU
dc.typeConference Posteren_AU
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