- Lake Euramoo (Queensland)
lake_name = Lake Euramoo ("Ngimun")
image_lake = Ngimun (Lake Euramo) 001.jpg
caption_lake = view from road site viewing platform
Far North Queensland
coords = coord|17.1591|S|145.629|E|type:waterbody_region:AU|display=inline,title
type = late
ovate double explosion crater
inflow = "no inflow channels"
outflow = "no outflow channels"
catchment = 4.4 ha
basin_countries = Australia
depth = 20 m (northern basin),
16 m (southern basin)
elevation = 718 m
Lake Euramoo (originally "Ngimun") is a shallow dumbbell-shaped volcanic
crater lake(a maar) formed about 10,000 years ago by two massive explosions from groundwater superheating, now known within Yidinji oral history and mythology as "Ngimun"Dixon, Robert M. W . 1972. The Dyirbal language of North Queensland. Cambridge University. Cambridge. Page 28] , also known to neighbouring Ngdjon-jii as "Nuta"; and formally gazetted on the Queenslandgovernment's placenames list as as 'Lake Euramoo' [ [http://www.nrw.qld.gov.au/property/placenames/detail.php?id=11965/ Queensland Government Place Names Database] . Accessed 6 November 2007.] (possibly an anglicized version of "Ngimun").
Lake Euramoo ("Ngimun") falls within the current Danbulla National Park and State Forest [ [http://www.epa.qld.gov.au/parks_and_forests/find_a_park_or_forest/danbulla_national_park_and_state_forest/ Queensland National Parks & Wildlife Service] Accessed 6 November 2007.] , on the
Tertiaryuplifted highlands of the Atherton Tableland, within the Wet Tropics of QueenslandWorld Heritage Area, Australia.
Yidinji and Ngadjon-jii mythology explaining the origin of "Ngimun" plus two other companion crater lakes, "Yidyam" (Lake Eacham) and "Barany" (
Lake Barrine), has been described as a plausible and surprisingly accurate oral account (an oral record 10 000 or more years old!) of volcanic eruptions or explosions:
"It is said that two newly-initiated men broke a taboo and angered the rainbow serpent Yamany, major spirit of the area ... As a result 'the camping-place began to change, the earth under the camp roaring like thunder. The wind started to blow down, as if a cyclone were coming. The camping-place began to twist and crack. While this was happening there was in the sky a red cloud, of a hue never seen before. The people tried to run from side to side but were swallowed by a crack which opened in the ground'...."
".. After telling the myth, in 1964, the storyteller remarked that when this happened the country round the lakes was 'not jungle - just open scrub'. In 1968, a dated pollen diagram from the organic sediments of Lake Euramoo [Ngimun] by Peter Kershaw (1970) showed, rather surprisingly, that the rain forest in that area is only about 7,600 years old."
The vegetation surrounding Lake Euramoo (Ngimun) is a remnant of moist sub
montane rainforest, surrounded by previously cleared land that, within the last 50 years, has been planted with endemic Hoop Pine ( Araucaria cunninghamii) and exotic conifers, or recolonised by the remnant rainforest species.HABERLE, Simon G; TIBBY, John; DIMITRIADIS, Sophie; & HEIJNIS, Henk (2006) "The impact of European occupation on terrestrial and aquatic ecosystem dynamics in an Australian tropical rain forest". Journal of Ecology. Volume 96. Pages 987- 1002.]
Typical moist submontane rainforest species found near Lake Euramoo (Ngimun), within 100 m, include:
Araliaceae(e.g. "Polyscias australiana", "Schefflera actinophylla")
Araucariaceae(e.g. "Agathis robusta")
Moraceae(e.g. "Ficus sp".),
Elaeocarpaceae(e.g. "Elaeocarpus grandis")
Euphorbiaceae(e.g. "Aleurites moluccana", "Macaranga spp.")
Myrtaceae(e.g. "Austromyrtus spp.", "Eugenia cormiflora") and
Rubiaceae(e.g. "Flindersia brayleyana","Euodia bonwickii" )
Around the margin of Ngimun are identifiable 'zones' of aquatic plants which fluctuate with water depth and the seasons:
* at Lake Euramoo (Ngimun)'s edge, rainforest
lianas (e.g. "Parsonsia" spp.) intertwine with tall swamp grasses ("Phragmites australis");
* away from the canopy's shade and the liana growth, up to 1 m water depth, the "
Hibiscus" spp. and " Ludwigia" spp. become more common.
* further out there are rooted
aquatic plants, floating vegetation mats, and, finally, up to 30 m from the edge are the floating acquatic plants (mainly " Nymphoides" spp.)
* [http://earthsci.org/aboriginal/Ngadjonji%20History/antquity/history2.htm/ Ngadjonji - Earthwatch web page.] Accessed 5 November 2007
* [http://www.epa.qld.gov.au/parks_and_forests/find_a_park_or_forest/danbulla_national_park_and_state_forest/ Queensland National Parks & Wildlife Service] Accessed 6 November 2007.
* [http://www.freesound.org/samplesViewSingle.php?id=38574 Recording of Striped Marsh frogs at the lake at Freesound]
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