Late holocene fire history and palaeoecological conditions at Dunphy Lake, Warrumbungle National Park, New South Wales, Australia

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dc.contributor.authorKonayasji, Ten_AU
dc.contributor.authorRalph, TJen_AU
dc.contributor.authorLobb, Jen_AU
dc.contributor.authorGadd, PSen_AU
dc.contributor.authorTheischinger, Gen_AU
dc.date.accessioned2020-06-11T02:28:31Zen_AU
dc.date.available2020-06-11T02:28:31Zen_AU
dc.date.issued2015-11-26en_AU
dc.date.statistics2020-05-15en_AU
dc.description.abstractThere is a significant geographical and temporal gap in the Holocene environmental record of fire, hydrology and palaeoecological conditions in the region of the Warrumbungle Mountains in eastern Australia. Dunphy Lake (-31.3076°S, 149.0149°E) is a small, ephemeral freshwater wetland within Warrumbungle National Park, and the only example of its kind in this temperate -semiarid region. Late Holocene fire history and palaeoecological conditions at Dunphy Lake were determined using a multiproxy approach that incorporates geochronological, limnological and geochemical techniques. The sediment profile at Dunphy Lake is dominated by mud (< 63 µm) and the macrocharcoal record indicates that the largest local fire events have occurred since 1,793±28 years BP. Some distinct peaks in macrocharcoal are coincident with peaks in sand (63-2000 µm) content, suggesting that some fires occurred at similar times to episodes of significant runoff and sediment flux from the catchment. Recent palaeoecological conditions were conducive to a relatively complex aquatic food web, as shown by the presence of micro- and macro-invertebrate and diatom remains in the upper sediment facies. A geochemical record derived from ITRAX core scanning shows facies with elevated pedogenic (e.g. Mn, Ca) and detrital (e.g. Si, Ti) elements, but does not show a significant increase in anthropogenic elements at the surface. Altogether, this multiproxy approach yields a record of fire and aquatic conditions that can be used to place historical and contemporary fires and vegetation changes in this region into context.en_AU
dc.identifier.citationKobayashi, T., Ralph, T., Lobb, J., Ingleton, T., Gadd, P., & Theischinger, G. (2015). Late holocene fire history and palaeoecological conditions at Dunphy Lake, Warrumbungle National Park, New South Wales, Australia. Paper presented at the "The changing freshwater landscape: collaboration, communication and communities" joint Conference for the New Zealand Freshwater Sciences Society and Australian Society for Limnology, 23-26 November 2015, Wellington, New Zealand.en_AU
dc.identifier.conferenceenddate26 November 2015en_AU
dc.identifier.conferencenameThe changing freshwater landscape: collaboration, communication and communities' joint Conference for the New Zealand Freshwater Sciences Society and Australian Society for Limnologyen_AU
dc.identifier.conferenceplaceWellington, New Zealanden_AU
dc.identifier.conferencestartdate23 November 2015en_AU
dc.identifier.govdoc9577en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9566en_AU
dc.language.isoenen_AU
dc.publisherNew Zealand Freswater Sciences Society and Australian Society for Limnologyen_AU
dc.subjectFiresen_AU
dc.subjectHistorical aspectsen_AU
dc.subjectQuaternary perioden_AU
dc.subjectLakesen_AU
dc.subjectSedimentsen_AU
dc.subjectNew South Walesen_AU
dc.subjectAustraliaen_AU
dc.subjectFresh wateren_AU
dc.subjectWetlandsen_AU
dc.subjectWatershedsen_AU
dc.subjectRunoffen_AU
dc.subjectSanden_AU
dc.subjectMountainsen_AU
dc.subjectPlantsen_AU
dc.titleLate holocene fire history and palaeoecological conditions at Dunphy Lake, Warrumbungle National Park, New South Wales, Australiaen_AU
dc.typeConference Abstracten_AU
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