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dc.contributor.authorDunn, Ryanen_US
dc.contributor.authorAli, Ayuben_US
dc.contributor.authorLemckert, Charlesen_US
dc.contributor.authorTeasdale, Peteren_US
dc.contributor.authorWelsh, Daviden_US
dc.date.accessioned2017-04-24T10:36:47Z
dc.date.available2017-04-24T10:36:47Z
dc.date.issued2007en_US
dc.date.modified2008-07-16T01:25:06Z
dc.identifier.issn07490208en_US
dc.identifier.urihttp://hdl.handle.net/10072/17634
dc.description.abstractExtensive urban development has occurred within the Coombabah Creek catchment and surrounds over the last two decades, resulting in concerns about degrading water quality. Water quality was investigated three times during summer and three times during autumn/winter at two sites: within Coombabah Lake and at several km downstream within Coombabah Creek. Physico-chemical parameters, suspended solids, chlorophyll-a and filterable nutrients (reactive PO4 3-, NO2 -, NO3 - and NH3 -) were measured hourly for 13 hours in order to compare the water quality under different tidal conditions at each site. Bathymetric and hydrological data were also collected, which allowed short-term nutrient loads to be estimated. From these measurements, the net transport of filterable nutrients and chlorophyll-a into Coombabah Lake and the intratidal variability of Coombabah Creek and Lake waters were determined. Physico-chemical parameters, suspended solids and chlorophyll-a concentrations demonstrated characteristic cyclic variations with the influence of tidal and diurnal cycles apparent. Despite elevated nutrient concentrations, chlorophyll-a values indicated an oligotrophic-mesotrophic environment, with concentrations ranging between 0.11-3.53 姠L-1. Maximum concentrations occurred during ebb tides, coinciding with periods of increased solar radiation. Elevated total suspended solids were observed during increased current velocities during low tide periods and greater wind speeds within the lake. Filterable nutrient concentrations and transport estimations also demonstrated tidal influences, with increased concentrations observed during sampled high tide phases, indicating increased inputs of nutrients originating from sources other than the creek and lake. Observed reactive PO4 3-, NOx and NH3 - concentrations exceeded Broadwater sub-region values within the Queensland Water Quality Guidelines (2006).en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent210312 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherCoastal Education & Research Foundation Inc.en_US
dc.publisher.placeUnited Statesen_US
dc.publisher.urihttp://www.cerf-jcr.org/en_AU
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom1062en_US
dc.relation.ispartofpageto1068en_US
dc.relation.ispartofjournalJournal of Coastal Researchen_US
dc.relation.ispartofvolume50en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchcode269999en_US
dc.titleShort-term variability of physico-chemical parameters and the estimated transport of filterable nutrients and chlorophyll-a in the urbanised Coombabah Lake and Coombabah Creek system, southern Moreton Bay, Australiaen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith School of Environmenten_US
gro.rights.copyrightCopyright 2007 CERF. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.en_AU
gro.date.issued2007
gro.hasfulltextFull Text


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