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dc.contributor.authorKarim, Fazlul
dc.contributor.authorKinsey-Henderson, Anne
dc.contributor.authorWallace, Jim
dc.contributor.authorGodfrey, Paul
dc.contributor.authorArthington, Angela H
dc.contributor.authorPearson, Richard G
dc.date.accessioned2017-06-29T12:30:48Z
dc.date.available2017-06-29T12:30:48Z
dc.date.issued2014
dc.date.modified2014-04-17T06:11:24Z
dc.identifier.issn0885-6087
dc.identifier.doi10.1002/hyp.10065
dc.identifier.urihttp://hdl.handle.net/10072/58671
dc.description.abstractThe ecological condition and biodiversity values of floodplain wetlands are highly dependent on the hydrological connectivity of wetlands to adjacent rivers. This paper describes a method for quantifying connectivity between floodplain wetlands and the main rivers in a wet tropical catchment of northern Australia. We used a one-dimensional hydrodynamic model to simulate time-varying water depths across the stream network (i.e. rivers, streams and man-made drains). The timing and duration of connectivity of seven wetlands (four natural and three artificial) with the two main rivers in the catchment were then calculated for different hydrological conditions. Location and areal extent of the wetlands and the stream network were identified using high-resolution laser altimetry, and these data formed key inputs to the hydrodynamic model. The model was calibrated using measured water depths and discharges across the floodplain. An algorithm was developed to identify contiguous water bodies at daily time steps, and this gave the temporal history of connection and disconnection between wetlands and the rivers. Simulation results show that connectivity of individual wetlands to both rivers varies from 26 to 365 days during an average hydrological condition. Location, especially proximity to a main river, and wetland type (natural stream or artificial drain) were identified as key factors influencing these levels of connectivity. Some natural wetlands maintain connection with the river for most or all of the year, whereas the connectivity of some artificial wetlands varies from 26 to 36 days according to their patterns of network connection to adjacent rivers - a result that has important implications for the accessibility of these types of wetland to aquatic biota. Using readily available river gauge data, we also show how connectivity modelling can be used to identify periods when connectivity has fallen below critical thresholds for fish movement. These connectivity patterns within the floodplain network are central to the setting of river flows that will meet environmental requirements for biota that use floodplain wetlands during their life history. Copyright 頲013 John Wiley & Sons, Ltd.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherJohn Wiley and Sons
dc.publisher.placeUnited Kingdom
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom5696
dc.relation.ispartofpageto5710
dc.relation.ispartofissue23
dc.relation.ispartofjournalHydrological Processes
dc.relation.ispartofvolume28
dc.rights.retentionY
dc.subject.fieldofresearchPhysical geography and environmental geoscience
dc.subject.fieldofresearchOther earth sciences not elsewhere classified
dc.subject.fieldofresearchCivil engineering
dc.subject.fieldofresearchEnvironmental engineering
dc.subject.fieldofresearchcode3709
dc.subject.fieldofresearchcode379999
dc.subject.fieldofresearchcode4005
dc.subject.fieldofresearchcode4011
dc.titleModelling hydrological connectivity of tropical floodplain wetlands via a combined natural and artificial stream network
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2013
gro.hasfulltextNo Full Text
gro.griffith.authorArthington, Angela H.


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