Holocene sediment records from World Heritage-listed K'gari/Fraser Island lakes (subtropical eastern Australia) highlight their sensitivity to drying

Simple item page
dc.contributor.authorTibby, Jen_AU
dc.contributor.authorBarr, Cen_AU
dc.contributor.authorMcInerney, Fen_AU
dc.contributor.authorMurphy, Cen_AU
dc.contributor.authorRaven, Men_AU
dc.contributor.authorLeng, MJen_AU
dc.contributor.authorTyler, JJen_AU
dc.contributor.authorMarshall, JCen_AU
dc.contributor.authorMcGregor, GBen_AU
dc.contributor.authorGadd, PSen_AU
dc.date.accessioned2023-12-11T01:02:53Zen_AU
dc.date.available2023-12-11T01:02:53Zen_AU
dc.date.issued2019-07-30en_AU
dc.date.statistics2023-03-24en_AU
dc.description.abstractLakes are some of the most biodiverse, yet vulnerable, ecosystems on the planet. In Australia, the driest inhabited continent on earth, permanent lakes are relatively rare. By contrast, K'gari or Fraser Island, the largest sand island in the world, has a large number of permanent lakes and represents one of the few lake districts on the continent. The lakes of K'gari/Fraser island are remarkable because many are perched above the regional water table where an impermeable layer separates them from the sand below. They are one of the reasons why the island is listed as a UNESCO World Heritage site. Holocene sediment sequences have now been analysed from at least six lakes on K'gari/Fraser Island. It appears that there was marked aridity on the island from c. 8000 to 5000 ka BP. Some lakes dried completely at a time previously thought to be characterised by humid climates in the Australian subtropics. Interestingly, in some sequences there is little to no physical evidence of drying which is recorded as a hiatus in the accumulation of highly organic, acidic, lake sediments. The mid-Holocene dry phase recorded on K'gari/Fraser Island contrasts with evidence from North Stradbroke Island, a similar sand island which also has perched lakes, approximately 150 km to the south. As a result, there is strong potential to infer the Holocene regional climatology of the Australian subtropics at small spatial scales from these records. Lastly, our study highlights a largely unrecognised vulnerability of lakes on K’gari to drying and indicates a need to better understand their hydrology and response to projected future climate change. © The Authors.en_AU
dc.identifier.citationTibby, J., Barr, C., McInerney, F., Murphy, C., Raven, M., Leng, M., Tyler, J., Marshall, J., McGregor, G., & Gadd, P. (2019). Holocene sediment records from World Heritage-listed K'gari/Fraser Island lakes (subtropical eastern Australia) highlight their sensitivity to drying. Paper presented to the 20th INQUA Congress 25th - 31st July 2019, Dublin, Ireland. Retrieved from: https://virtual.oxfordabstracts.com/#/event/public/574/submission/1841en_AU
dc.identifier.conferenceenddate2019-07-31en_AU
dc.identifier.conferencename20th INQUA Congressen_AU
dc.identifier.conferenceplaceDublin, Ireland.en_AU
dc.identifier.conferencestartdate2019-07-25en_AU
dc.identifier.urihttps://virtual.oxfordabstracts.com/#/event/public/574/submission/1841en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15283en_AU
dc.language.isoenen_AU
dc.publisherInternational Union for Quaternary Research (INQUA)en_AU
dc.subjectQuaternary perioden_AU
dc.subjectIslandsen_AU
dc.subjectAustraliaen_AU
dc.subjectLakesen_AU
dc.subjectEcosystemsen_AU
dc.subjectSedimentsen_AU
dc.subjectHumidityen_AU
dc.subjectHydrologyen_AU
dc.titleHolocene sediment records from World Heritage-listed K'gari/Fraser Island lakes (subtropical eastern Australia) highlight their sensitivity to dryingen_AU
dc.typeConference Abstracten_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications