Groundwater organic matter: carbon source or sink?

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dc.contributor.authorRutlidge, Hen_AU
dc.contributor.authorAndersen, MSen_AU
dc.contributor.authorO'Carroll, DMen_AU
dc.contributor.authorOudone, PPen_AU
dc.contributor.authorMcDonough, LKen_AU
dc.contributor.authorMeredith, KTen_AU
dc.contributor.authorMarjo, CEen_AU
dc.contributor.authorBaker, AAen_AU
dc.date.accessioned2023-01-19T00:21:54Zen_AU
dc.date.available2023-01-19T00:21:54Zen_AU
dc.date.issued2017-07-11en_AU
dc.date.statistics2022-04-21en_AU
dc.description.abstractThe natural environment plays a critical role in offsetting the anthropogenic carbon emissions. Despite the size of the global groundwater store the processes controlling the concentration and characteristics of organic matter in groundwater are poorly understood. Through a survey of global carbon concentrations, it is apparent that groundwater carbon concentrations are significantly lower than terrestrial (soil, sediment and river) concentrations. This indicates that terrestrial OM is biologically processed (and a potential source of inorganic carbon) or sorbed to mineral surfaces (a sink of carbon). This will be explored through an ARC Discovery research project which will investigate factors that determine groundwater organic matter concentration, how important is groundwater to the terrestrial carbon budget and under what conditions where groundwater is a carbon source or sink. This project is bringing together geochemists, ecologists, hydrologists and anyone with an interest in organic matter in groundwater. Specifically, the amount of colloid and dissolved organic matter present will be quantified, the rate and extent of biological processing, desorption and sorption will be investigated and the relative importance of each process to be determined. The processes that control organic matter in groundwater will be investigated at a range of field sites with differing surface soil, land cover, recharge type and hydrological properties. Preliminary results from various field sites has shown that sedimentary organic matter is mobilised as water flows through the hyporheic zone. The results from this project will provide guidelines for the management of groundwater resource as part of the carbon economy.en_AU
dc.identifier.citationRutlidge, H., Andersen, M., O'Carroll, D., Oudone, P., McDondough, L., Meredith, K., Marjo, C., & Baker, A. (2017). Groundwater organic matter: carbon source or sink? Paper presented to the 2017 Biennial Australasian Groundwater Conference, UNSW Sydney, 11 - 13 July 2017, (pp. 36). Retrieved from: http://agc-2017.p.agc2017.currinda.com/days/2017-07-11/abstract/319en_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/319en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14394en_AU
dc.language.isoenen_AU
dc.publisherNational Centre for Groundwater Research And Trainingen_AU
dc.subjectEnvironmenten_AU
dc.subjectGround wateren_AU
dc.subjectCarbonen_AU
dc.subjectCarbon sinksen_AU
dc.subjectSoilsen_AU
dc.subjectRiversen_AU
dc.subjectOrganic matteren_AU
dc.subjectSorptionen_AU
dc.subjectPollutionen_AU
dc.titleGroundwater organic matter: carbon source or sink?en_AU
dc.typeConference Abstracten_AU
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