We present a new well dated Holocene record of environmental change from Little Llangothlin Lagoon in eastern Australia derived from aquatic plant macrofossils, macroscopic charcoal flux, and sediment stratigraphy from multiple cores. Little Llangothlin was an ephemeral freshwater wetland exhibiting frequent dry phases between 9800 and 9300 calendar years before present (cal. yr BP). There was a switch to a more positive water balance after 9300 cal. yr BP, and by 8000 cal. yr BP, there was a lake that persisted until 6100 cal. yr BP. The period between 6100 and 1000 cal. yr BP was much drier, and there is no evidence for a permanent lake during this period. The Little Llangothlin record provides evidence for a wet phase during the Early to Middle Holocene (9000–6000 cal. yr BP) from the boundary region between temperate and tropical influences in eastern Australia. We propose that generally enhanced circulation after 9000 cal. yr BP explains the pattern of increasing moisture at the site at this time. The later Holocene climate at the site is consistent with other sites in south east Australia with a switch to generally drier conditions after 6000 cal. yr BP.
AsaedaTManatungeJRajapakseL. (2006) Growth dynamics and biomass allocation of Eleocharis sphacelata at different water depths: Observations, modeling, and applications. Landscape Ecology and Engineering2: 31–39.
2.
BellDMHunterJTHaworthJ (2008) Montane lakes (lagoons) of the New England Tablelands Bioregion. Cunninghamia10: 475–492.
3.
BennettKD (2002) Psimpoll 3.10: C Programs for Plotting Pollen Diagrams and Analysing Pollen Data. Uppsala: Uppsala University, 117 pp.
4.
BensonJSAshbyEM (2000) Vegetation of the Guyra 1: 100 000 map shett New England Bioregion, New South Wales. Cunninghamia6: 747–871.
5.
BensonJSJacobsSWL (1994) Plant communities of the Monaro Lakes. Cunninghamia3: 651–676.
6.
BlaauwM (2010) Methods and code for ‘classical’ age-modelling of radiocarbon sequences. Quaternary Geochronology5: 512–518.
7.
BowdlerS (1981) Hunters in the highlands: Aboriginal adaptations in the eastern Australian uplands. Archaeology in Oceania16: 99–111.
8.
BradstockRA (2010) A biogeographic model of fire regimes in Australia: Current and future implications. Global Ecology and Biogeography19: 145–158.
9.
BrockMASmithRGBJarmanPJ (1999) Drain it, dam it: Alteration of water regime in shallow wetlands on the New England Tableland of New South Wales, Australia. Wetlands Ecology and Management7: 37–46.
10.
CasanovaMT (2005) An overview of Chara L. in Australia (Characeae, Charophyta). Australian Systematic Botany18: 25–39.
11.
CasanovaMT (2009) An overview of Nitella (Characeae, Charophyceae) in Australia. Australian Systematic Botany22: 193–218.
12.
CasanovaMTBrockMA (1999) Life Histories of charophytes from permanent and temporary wetlands in eastern Australia. Australian Journal of Botany47: 383–397.
13.
CoenraadsRR (1989) Evaluation of the natural lagoons of the Central Province, NSW – Are they Sapphire-producing maars?Exploration Geophysics20: 347–363.
14.
Cohen-OfriIWeinerLBoarettoE. (2006) Modern and fossil charcoal: Aspects of structure and diagenesis. Journal of Archaeological Science33: 428–439.
15.
DodsonJR (1986) Holocene forest and wetland vegetation dynamics at Barrington Tops, New South Wales. Journal of Biogeography13: 561–585.
16.
FitzsimmonsKECohenTJHessePP. (2013) Late Quaternary palaeoenvironmental change in the Australian drylands. Quaternary Science Reviews74: 78–96.
17.
FletcherM-SMorenoPI (2011) Zonally symmetric changes in the strength and position of the Southern Westerlies drove atmospheric CO2 variations over the past 14 k.y. Geology39: 419–422.
18.
FletcherM-SMorenoPI (2012) Have the Southern Westerlies changed in a zonally symmetric manner over the last 14,000 years? A hemisphere-wide take on a controversial problem. Quaternary International253: 32–46.
19.
GaleSJHaworthRJ (2002) Beyond the limits of location: Human environmental disturbance prior to official European contact in early colonial Australia. Archaeology in Oceania37: 123–136.
20.
GaleSJHaworthRJPisanuPC (1995) The 210Pb chronology of late Holocene deposition in an eastern Australian lake basin. Quaternary Science Reviews14: 395–408.
21.
GodwinL (1983) Archaeological site surveys on the eastern margin of the New England Tablelands. Australian Archaeology17: 38–47.
22.
GouramanisCDe DeckkerPSwitzerAD. (2013) Cross-continent comparison of high-resolution Holocene climate records from southern Australia – Deciphering the impacts of far-field teleconnections. Earth-Science Reviews121: 55–72.
23.
HaworthRJ (1994) European impact on lake sedimentation in upland eastern Australia: Case studies from the New England Tablelands of NSW. Unpublished PhD Thesis, University of New England.
24.
HeiriOLotterAFLemckeG (2001) Loss on ignition as a method for estimating organic and carbonate content in sediments: Reproducibility and comparability of results. Journal of Paleolimnology25: 101–110.
25.
HoggAGHuaQBlackwellPG. (2013) SHCal13 Southern Hemisphere calibration, 0-50,000 years cal BP. Radiocarbon55: 1889–1903.
26.
KershawAP (1970) A pollen diagram from Lake Euramoo, north-east Queensland, Australia. New Phytologist69: 785–805.
27.
KershawAP (1971) A pollen diagram from Quincan Crater, north-east Queensland, Australia. New Phytologist70: 669–681.
28.
KershawAP (1975) Stratigraphy and pollen analysis of Bromfield Swamp, north eastern Queensland, Australia. New Phytologist75: 173–191.
29.
KershawAP (1983) A Holocene pollen diagram from Lynch’s Crater, north-eastern Queensland, Australia. New Phytologist94: 669–682.
30.
McGowanHAPetherickLMKamberBS (2008) Aeolian sedimentation and climate variability during the late Quaternary in southeast Queensland, Australia. Palaeogeography, Palaeoclimatology, Palaeoecology265: 171–181.
31.
McIntyreSBarrettGW (1992) Habitat variegation, an alternative to fragmentation. Conservation Biology6: 146–147.
32.
MooneySDTinnerW (2010) The analysis of charcoal in peat and organic sediments. Moors and Peat7: 1–18.
33.
Munsell Color (1992) Munsell Soil Color Charts. Macbeth, Division of Kollmorgen Instruments Corporation. Newburgh, NY: Munsell Color.
34.
PenmanHL (1948) Natural evaporation from open water, bare soil, and grass. Proceedings of the Royal Society of London Series A: Mathematical Physical and Engineering Sciences193: 120–146.
35.
PetherickLMMcGowanHAKamberBS (2009) Reconstructing late Quaternary dust transport pathways for eastern Australia using trace element composition of long travelled dusts. Geomorphology105: 67–79.
36.
PetherickLMMcGowanHAMossPT (2008) Climate variability during the Last Glacial Maximum in eastern Australia: Evidence of two stadials?Journal of Quaternary Science23: 787–802.
37.
PetherickLBostockHCohenTJ. (2013) Climatic records over the past 30 ka from temperate Australia – A synthesis from the Oz-INTIMATE workgroup. Quaternary Science Reviews74: 58–77.
38.
ReaTEKarapatakisDJGuyKK. (1998) The relative effects of water depth, fetch and other physical factors on the development of macrophytes in a small southeastern US pond. Aquatic Botany61: 289–299.
39.
ReevesJMBarrowsTTCohenTJ. (2013a) Climate variability over the last 35,000 years recorded in marine and terrestrial archives in the Australian region: An OZ-INTIMATE compilation. Quaternary Science Reviews74: 21–34.
40.
ReevesJMBostockHCAyliffeLK. (2013b) Palaeoenvironmental change in tropical Australasia over the last 30,000 years – A synthesis by the OZ-INTIMATE group. Quaternary Science Reviews74: 97–114.
41.
Russell-SmithJYatesCPWhiteheadPJ. (2007) Bushfires ‘down under’: Patterns and implications of contemporary Australian landscape burning. International Journal of Wildland Fire16: 361–377.
42.
ShawSEFloodRH (1981) The New England Batholith, eastern Australia: Geochemical variations in time and space. Journal of Geophysical Research86(B11): 10530–10544.
43.
ShulmeisterJ (1999) Australasian evidence for mid-Holocene climate change implies precessional control of Walker Circulation in the Pacific. Quaternary International57–58: 81–91.
44.
ShulmeisterJLeesBG (1995) Pollen evidence from tropical Australia for the onset of an ENSO-dominated climate at c. 4000 BP. The Holocene5: 10–18.
45.
ShulmeisterJGoodwinIRenwickJ. (2004) The Southern Hemisphere westerlies in the Australasian sector over the last glacial cycle: A synthesis. Quaternary International118–119: 23–53.
46.
SinghGLulyJ (1991) Changes in vegetation and seasonal climate since the last full glacial at Lake Frome, South Australia. Palaeogeography, Palaeoclimatology, Palaeoecology84: 75–86.
47.
SorrellBKTannerCCSukiasJPS (2002) Effects of water depth and substrate on growth and morphology of Eleocharis sphacelata: Implications for culm support and internal gas transport. Aquatic Botany73: 93–106.
48.
StuvierMReimerPJReimerR (2005) CALIB Radiocarbon Calibration (Version 6.0). Belfast. Available at: http://intcal.qub.ac.uk/calib/ (accessed 3 July 2013).
49.
ThompsonRD (1973) The contribution of airflow circulations to local temperatures and rainfall in the New England area, New South Wales, Australia. Archiv fur Meteorologie, Geophysik und Bioklimatologie Serie B21: 175–188.
50.
Troels-SmithJ (1955) Characterization of unconsolidated sediments. Geological Survey of Denmark10: 1–73.
51.
WalkerMJCBerkelhammerMBjörckS. (2012) Formal subdivision of the Holocene Series/Epoch: A Discussion Paper by a Working Group of INTIMATE (Integration of ice-core, marine and terrestrial records) and the subcommission on Quaternary Stratigraphy (International Commission on Stratigraphy). Journal of Quaternary Science27: 649–659.
52.
WoodwardCChangJZawadzkiA. (2011) Evidence against early nineteenth century major European induced environmental impacts by illegal settlers in the New England Tablelands, south eastern Australia. Quaternary Science Reviews30: 3743–3747.
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