Ecology (2)

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Crater of soil protects an ants underground nest

Ants excavating underground nest after rain create a uniform crater surrounding their entrance made of bite-size pieces of earth all carried much the same distance away before being dropped. S15.14s

Hawk Moth Sphingidae: Lepidoptera, a fast-flying moth, hovers briefly at a field lily Crinum flower to suck nectar with its extremely long, coiled proboscis deep in the flower's heart, at night in dry woodland of Lochern NP, Channel Country, SW Qld, Australia. SW112.1s

Storm clouds gather over parched grassland at end of dry season

Welcome seasonal summer rain approaches tropical semi-arid tussock grassland on the Mitchell Grass Downs, outback western Qld., Australia. Mitchell grasses Astrebla sp. dominate over vast plains, providing rich grazing for pastoral industry, & a unique fauna yet to be studied in detail. SW99.18s

Green algae in warm saline waters of inland Lake Wyara

Planktonic green algae colours the warm saline waters of Lake Wyara, a 3 800ha salt lake & Ramsar Wetland in Currawinya National Park, outback SW Queensland, Australia, famous for its vast waterfowl populations, supported by the lake's rich plankton. SW99.13s

Earthen core of hollow tree deposited by termites, Northern Territory

Baked earth core of log burned in dry season fires in Wet-Dry Tropics, Arnhem Land, Northern Territory, Australia, shows habit of arboreal termites in monsoon forest & woodland of hollowing out tree cores and replacing with their earthen galleries. Termite attack is thought to be the main limitation on tree size in these regions, where very few trees survive to be old giants. N8.3s

Fungi on floor of wet sclerophyll forest, SE Forests NSW

Gregarious fungi Descolea recedens among undisturbed forest floor leaf-litter in temperate wet eucalypt forest, Coolangubra forest wilderness, SE forests, New South Wales, Australia, site of one of the world's many forest exploitation controversies (preservation of old growth forest with high arboreal mammal densities and endangered species, or woodchipping for paper pulp). L10.4s

Zonation of mangrove species by shore, Arnhem Land

Mangrove zonation with salinity and soil moisture, of rich mangrove flora in Ramsar wetlands beside Trepang Ck, Cobourg Pen. (Gurig NP), Top End, N T. Front to back Ceriops and Lumnitzera (low); Avicennia(light); Rhizophora (dark) and Bruguiera (tallest). N50.10s

Frogs' eggs float on an ephemeral wetland after rain

Frog’s eggs floating in temporary pool of an ephemeral wetland, central Qld Australia. When summer storms fill pools, frogs breed rapidly. If time permits tadpoles to reach maturity, the frogs will burrow in the soft mud, encasing themselves in a cacoon through drought. CQ31.24s

Flotsam on a wilderness beach, the hypocotyls of stilt-rooted mangroves Rhyzophora stylosa gather at the tide line on Hummock Hill Island, central Queensland, to germinate and continue mangrove colonisation of this pristine coastal wetland area. CQs

Ecology 1 (previous page)

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