The legacy of mid-Holocene fire on a Tasmanian montane landscape

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dc.contributor.authorFletcher, MSen_AU
dc.contributor.authorWolfe, BBen_AU
dc.contributor.authorWhitlock, Cen_AU
dc.contributor.authorPompeani, DPen_AU
dc.contributor.authorHeijnis, Hen_AU
dc.contributor.authorHaberle, SGen_AU
dc.contributor.authorGadd, PSen_AU
dc.contributor.authorBowman, DMJSen_AU
dc.date.accessioned2014-04-28T23:41:38Zen_AU
dc.date.available2014-04-28T23:41:38Zen_AU
dc.date.issued2014-03-01en_AU
dc.date.statistics2014-04-29en_AU
dc.description.abstractAimTo assess the long-term impacts of landscape fire on a mosaic of pyrophobic and pyrogenic woody montane vegetation. LocationSouth-west Tasmania, Australia. MethodsWe undertook a high-resolution multiproxy palaeoecological analysis of sediments deposited in Lake Osborne (Hartz Mountains National Park, southern Tasmania), employing analyses of pollen, macroscopic and microscopic charcoal, organic and inorganic geochemistry and magnetic susceptibility. ResultsSequential fires within the study catchment over the past 6500years have resulted in the reduction of pyrophobic rain forest taxa and the establishment of pyrogenic Eucalyptus-dominated vegetation. The vegetation change was accompanied by soil erosion and nutrient losses. The rate of post-fire recovery of widespread rain forest taxa (Nothofagus cunninghamii and Eucryphia spp.) conforms to ecological models, as does the local extinction of fire-sensitive rain forest taxa (Nothofagus gunnii and Cupressaceae) following successive fires. Main conclusionsThe sedimentary analyses indicate that recurrent fires over several centuries caused a catchment-wide transition from pyrophobic rain forest to pyrophytic eucalypt-dominated vegetation. The fires within the lake catchment during the 6500-year long record appear to coincide with high-frequency El Nino events in the equatorial Pacific Ocean, signalling a potential threat to these highly endemic rain forests if El Nino intensity amplifies as predicted under future climate scenarios. © 2014, Wiley-Blackwell.en_AU
dc.identifier.citationFletcher, M.-S., Wolfe, B. B., Whitlock, C., Pompeani, D. P., Heijnis, H., Haberle, S. G., Gadd, P. S., & Bowman, D. M. J. S. (2014). The legacy of mid-Holocene fire on a Tasmanian montane landscape. Journal of Biogeography, 41(3), 476-488. doi:10.1111/jbi.12229en_AU
dc.identifier.govdoc5468en_AU
dc.identifier.issn0305-0270en_AU
dc.identifier.issue3en_AU
dc.identifier.journaltitleJournal of Biogeographyen_AU
dc.identifier.pagination476-488en_AU
dc.identifier.urihttp://dx.doi.org/10.1111/jbi.12229en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5516en_AU
dc.identifier.volume41en_AU
dc.language.isoenen_AU
dc.publisherWiley Blackwellen_AU
dc.subjectCarbonen_AU
dc.subjectQuaternary perioden_AU
dc.subjectCharcoalen_AU
dc.subjectNitrogenen_AU
dc.subjectEucalyptusesen_AU
dc.subjectSouthern Hemisphereen_AU
dc.titleThe legacy of mid-Holocene fire on a Tasmanian montane landscapeen_AU
dc.typeJournal Articleen_AU
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