Pollen, biomarker and stable isotope evidence of late quaternary environmental change at Lake McKenzie, southeast Queensland

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dc.contributor.authorAtahan, Pen_AU
dc.contributor.authorHeijnis, Hen_AU
dc.contributor.authorDodson, JRen_AU
dc.contributor.authorGrice, Ken_AU
dc.contributor.authorLe Métayer, Pen_AU
dc.contributor.authorTaffs, Ken_AU
dc.contributor.authorHembrow, SCen_AU
dc.contributor.authorWoltering, Men_AU
dc.contributor.authorZawadzki, Aen_AU
dc.date.accessioned2017-04-10T01:37:48Zen_AU
dc.date.available2017-04-10T01:37:48Zen_AU
dc.date.issued2014-10-30en_AU
dc.date.statistics2017-04-10en_AU
dc.description.abstractUnravelling links between climate change and vegetation response during the Quaternary is important if the climate–environment interactions of modern systems are to be fully understood. Using a sediment core from Lake McKenzie, Fraser Island, we reconstruct changes in the lake ecosystem and surrounding vegetation over the last ca. 36.9 cal kyr. Evidence is drawn from multiple sources, including pollen, micro-charcoal, biomarker and stable isotope (C and N) analyses, and is used to gain a better understanding of the nature and timing of past ecological changes that have occurred at the site. The glacial period of the record, from ca. 36.9 to 18.3 cal kyr BP, is characterised by an increased abundance of plants of the aquatic and littoral zone, indicating lower lake water levels. High abundance of biomarkers and microfossils of the colonial green alga Botryococcus occurred at this time and included large variation in individual botryococcene δ13C values. A slowing or ceasing of sediment accumulation occurred during the time period from ca. 18.3 to 14.0 cal kyr BP. By around 14.0 cal kyr BP fire activity in the area was reduced, as was abundance of littoral plants and terrestrial herbs, suggesting wetter conditions from that time. The Lake McKenzie pollen record conforms to existing records from Fraser Island by containing evidence of a period of reduced effective precipitation that commenced in the mid-Holocene. © Springer Science+Business Media Dordrecht 2014en_AU
dc.identifier.citationAtahan, P., Heijnis, H., Dodson, J., Grice, K.,Le Métayer, P., Taffs, K., Hembrow, S., Woltering, M., Zwadzki, A., & Zawadzki, A. (2015). Pollen, biomarker and stable isotope evidence of late quaternary environmental change at Lake McKenzie, southeast Queensland. Journal of Paleolimnology, 53(1), 139-156. doi:10.1007/s10933-014-9813-3en_AU
dc.identifier.govdoc8081en_AU
dc.identifier.issn0921-2728en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleJournal of Paleolimnologyen_AU
dc.identifier.pagination139-156en_AU
dc.identifier.urihttp://dx.doi.org/10.1007/s10933-014-9813-3en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/8537en_AU
dc.identifier.volume53en_AU
dc.language.isoenen_AU
dc.publisherSpringeren_AU
dc.subjectPollenen_AU
dc.subjectClimatic changeen_AU
dc.subjectPlantsen_AU
dc.subjectSedimentsen_AU
dc.subjectEcologyen_AU
dc.subjectPrecipitationen_AU
dc.titlePollen, biomarker and stable isotope evidence of late quaternary environmental change at Lake McKenzie, southeast Queenslanden_AU
dc.typeJournal Articleen_AU
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