How old is the Tasmanian cultural landscape? A test of landscape openness using quantitative land-cover reconstructions

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dc.contributor.authorMariani, Men_AU
dc.contributor.authorConnor, SEen_AU
dc.contributor.authorFletcher, MSen_AU
dc.contributor.authorTheuerkauf, Men_AU
dc.contributor.authorKuneš, Pen_AU
dc.contributor.authorJacobsen, GEen_AU
dc.contributor.authorSaunders, KMen_AU
dc.contributor.authorZawadzki, Aen_AU
dc.date.accessioned2019-09-03T03:04:53Zen_AU
dc.date.available2019-09-03T03:04:53Zen_AU
dc.date.issued2017-06-19en_AU
dc.description.abstractAim To test competing hypotheses about the timing and extent of Holocene landscape opening using pollen-based quantitative land-cover estimates. Location Dove Lake, Tasmanian Wilderness World Heritage Area, Australia. Methods Fossil pollen data were incorporated into pollen dispersal models and corrected for differences in pollen productivity among key plant taxa. Mechanistic models (REVEALS—Regional Estimates of VEgetation Abundance from Large Sites) employing different models for pollen dispersal (Gaussian plume and Lagrangian stochastic models) were evaluated and applied in the Southern Hemisphere for the first time. Results Validation of the REVEALS model with vegetation cover data suggests an overall better performance of the Lagrangian stochastic model. Regional land-cover estimates for forest and non-forest plant taxa show persistent landscape openness throughout the Holocene (average landscape openness ~50%). Gymnoschoenus sphaerocephalus, an indicator of moorland vegetation, shows higher values during the early Holocene (11.7–9 ka) and declines slightly through the mid-Holocene (9–4.5 ka) during a phase of partial landscape afforestation. Rain forest cover reduced (from ~40% to ~20%) during the period between 4.2–3.5 ka. Main conclusions Pollen percentages severely under-represent landscape openness in western Tasmania and this bias has fostered an over-estimation of Holocene forest cover from pollen data. Treeless vegetation dominated Holocene landscapes of the Dove Lake area, allowing us to reject models of landscape evolution that invoke late-Holocene replacement of a rain forest-dominated landscape by moorland. Instead, we confirm a model of Late Pleistocene inheritance of open vegetation. Rapid forest decline occurred after c. 4 ka, likely in response to regional moisture decline. © 2017 John Wiley & Sons Ltden_AU
dc.identifier.citationMariani, M., Connor, S. E., Fletcher, M.-S., Theuerkauf, M., Kuneš, P., Jacobsen, G., Saunders, K. M., & Zawadzki, A. (2017). How old is the Tasmanian cultural landscape? A test of landscape openness using quantitative land‐cover reconstructions. Journal of Biogeography. 44(10), 2410-2420. doi:10.1111/jbi.13040.en_AU
dc.identifier.govdoc8468en_AU
dc.identifier.issn1365-2699en_AU
dc.identifier.issue10en_AU
dc.identifier.journaltitleJournal of Biogeographyen_AU
dc.identifier.pagination2410-2420en_AU
dc.identifier.urihttps://doi.org/10.1111/jbi.13040en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9058en_AU
dc.identifier.volume44en_AU
dc.language.isoenen_AU
dc.publisherJohn Wiley and Sonsen_AU
dc.subjectAustraliaen_AU
dc.subjectCultural objectsen_AU
dc.subjectQuaternary perioden_AU
dc.subjectTasmaniaen_AU
dc.subjectPlantsen_AU
dc.subjectEnvironmenten_AU
dc.subjectForestsen_AU
dc.titleHow old is the Tasmanian cultural landscape? A test of landscape openness using quantitative land-cover reconstructionsen_AU
dc.typeJournal Articleen_AU
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