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

2017-10Journal article Open access
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dc.contributor.authorMariani, Michela
dc.contributor.authorConnor, Simon
dc.contributor.authorFletcher, Michael-S.
dc.contributor.authorTheuerkauf, Martin
dc.contributor.authorKunes, Petr
dc.contributor.authorJacobsen, Geraldine
dc.contributor.authorSaunders, Krystyna M.
dc.contributor.authorZawadzki, Atun
dc.date.accessioned2018-12-07T14:58:03Z
dc.date.available2018-12-07T14:58:03Z
dc.date.issued2017-10
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 similar to 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 similar to 40% to similar 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.
dc.description.sponsorshipAustralian Research Council; AINSE AWARD [ALNGRA16024]; AINSE PGRA scholarship [12039]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1111/jbi.13040
dc.identifier.issn0305-0270
dc.identifier.issn1365-2699
dc.identifier.urihttp://hdl.handle.net/10400.1/11834
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectPollen dispersal models
dc.subjectSouth-west Tasmania
dc.subjectVegetation mosaics
dc.subjectHolocene vegetation
dc.subjectPlant abundance
dc.subjectReveals-model
dc.subjectSource area
dc.subjectClimate
dc.subjectAustralia
dc.subjectFire
dc.titleHow old is the Tasmanian cultural landscape? a test of landscape openness using quantitative land-cover reconstructions
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage2420
oaire.citation.issue10
oaire.citation.startPage2410
oaire.citation.titleJournal of Biogeography
oaire.citation.volume44
person.familyNameConnor
person.givenNameSimon
person.identifier1096134
person.identifier.ciencia-id171B-8713-654E
person.identifier.orcid0000-0001-5685-2390
person.identifier.scopus-author-id7102766997
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublicatione75ca68e-b2e4-48e6-b219-74238ca34c3b
relation.isAuthorOfPublication.latestForDiscoverye75ca68e-b2e4-48e6-b219-74238ca34c3b

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