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Export of nutrients and suspended sediment during a cyclone-mediated flood event in the Herbert River catchment, Australia

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dc.contributor Australian Institute Of Marine Science (aims) en
dc.contributor Commonwealth Scientific & Industrial Research Organisation (csiro)
dc.contributor Australian Inst Marine Sci
dc.contributor Csiro
dc.contributor Australian Institute Of Marine Science
dc.contributor.author JOHNSON, AKL
dc.contributor.author MITCHELL, AW
dc.contributor.author BRAMLEY, RGV
dc.date.accessioned 2013-02-28T06:43:09Z
dc.date.accessioned 2017-03-21T00:59:10Z
dc.date.accessioned 2017-03-21T00:59:10Z
dc.date.accessioned 2019-05-09T01:08:26Z
dc.date.available 2017-03-21T00:59:10Z
dc.date.available 2013-02-28T06:43:09Z
dc.date.available 2013-02-28T06:43:09Z
dc.date.available 2019-05-09T01:08:26Z
dc.date.issued 1997-01-01
dc.identifier 2885 en
dc.identifier.citation Mitchell AW, Bramley RGV and Johnson AKL (1997) Export of nutrients and suspended sediment during a cyclone-mediated flood event in the Herbert River catchment, Australia. Marine and Freshwater Research. 48: 79-88. en
dc.identifier.issn 1323-1650
dc.identifier.uri http://epubs.aims.gov.au/11068/2885
dc.description Link to abstract/full text - http://dx.doi.org/10.1071/MF96021 en
dc.description.abstract Changes in the river chemistry of the Herbert River (northern Queensland) during a flood event that followed Cyclone Sadie in January 1994 are presented. Parallel data sets collected by AIMS and CSIRO were generally well correlated. Around the flood peak, concentrations of dissolved inorganic nutrients declined to a minimum, whereas particulate nutrient concentrations increased to a maximum (particulate nitrogen, 1200 mu g N L-1; particulate phosphorus, 225 mu g P L-1). Concentrations of dissolved organic nutrients varied erratically. Concentrations of silicate and potassium, pH and electrical conductivity varied inversely with discharge. Good correlations were observed between the concentrations of particulates and concurrent discharge, with differing relationships existing during the rising and falling stages of the flood. It is estimated that this flood event resulted in the export of at least 600 t of N, 65 t of P and 100 000 t of suspended sediments over a period of six and a half days, with most transport (85%) occurring within the first two days. Particulate fractions of N (50%) and P (80%) constituted the bulk of the nutrient flux. This study illustrates the potential for high nutrient exports during brief flood events from intensively farmed agricultural land within tropical catchments.
dc.description.uri http://dx.doi.org/10.1071/MF96021 en
dc.language English
dc.language en en
dc.relation.ispartof Null
dc.relation.ispartof Marine and Freshwater Research - pages: 48: 79-88 en
dc.relation.isreferencedby Link to Metadata Record - http://data.aims.gov.au/metadataviewer/uuid/610f9ac0-4ade-11dc-8f56-00008a07204e en
dc.relation.uri http://data.aims.gov.au/metadataviewer/uuid/42de8944-12a2-4e56-a41c-401ef39010ee en
dc.relation.uri http://data.aims.gov.au/metadataviewer/uuid/610f9ac0-4ade-11dc-8f56-00008a07204e en
dc.subject Limnology
dc.subject Marine & Freshwater Biology
dc.subject Fisheries
dc.subject Discharge
dc.subject Oceanography
dc.subject Agricultural Runoff
dc.subject Tropical River
dc.subject Nitrogen
dc.title Export of nutrients and suspended sediment during a cyclone-mediated flood event in the Herbert River catchment, Australia
dc.type journal article en
dc.identifier.doi 10.1071/MF96021 en
dc.identifier.wos WOS:A1997WV93900009


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